chore(tui): pin OpenTUI preview

Open the recent-session and project picker synchronously with selectable cached rows and independent refreshes. Reconcile committed moves and deletions without restoring stale rows, preserve dismissal and selection through delayed reads, and keep filtered selections visible after asynchronous results arrive.

.changeset/directory-page-heading.md

@@ -0,0 +1,5 @@
+---
+"@opencode-ai/core": patch
+---
+
+Correct directory page headings when the read offset is zero.

bun.lock

@@ -966,7 +966,6 @@
         "mime-types": "3.0.2",
         "minimatch": "10.2.5",
         "npm-package-arg": "13.0.2",
-        "pacote": "21.5.1",
         "resolve.exports": "catalog:",
       },
       "devDependencies": {
@@ -976,7 +975,6 @@
         "@types/node": "catalog:",
         "@types/npm-package-arg": "6.1.4",
         "@types/npmcli__arborist": "6.3.3",
-        "@types/pacote": "11.1.8",
         "@typescript/native-preview": "catalog:",
       },
     },
@@ -1075,9 +1073,9 @@
     "@npmcli/arborist": "9.4.0",
     "@octokit/rest": "22.0.0",
     "@openauthjs/openauth": "0.0.0-20250322224806",
-    "@opentui/core": "0.5.9",
-    "@opentui/keymap": "0.5.9",
-    "@opentui/solid": "0.5.9",
+    "@opentui/core": "https://pkg.pr.new/anomalyco/opentui/@opentui/core@dd9fe495b1be9c7d2558a08216c83d5c985ba643",
+    "@opentui/keymap": "https://pkg.pr.new/anomalyco/opentui/@opentui/keymap@dd9fe495b1be9c7d2558a08216c83d5c985ba643",
+    "@opentui/solid": "https://pkg.pr.new/anomalyco/opentui/@opentui/solid@dd9fe495b1be9c7d2558a08216c83d5c985ba643",
     "@pierre/diffs": "1.2.10",
     "@playwright/test": "1.59.1",
     "@sentry/solid": "10.71.0",
@@ -2214,27 +2212,27 @@
 
     "@opentelemetry/semantic-conventions": ["@opentelemetry/semantic-conventions@1.43.0", "", {}, "sha512-eSYWTm620tTk45EKSedaUL8MFYI8hW164hIXsgIHyxu3VobUB3fFCu5t0hQby6OoWRPsG1KkKUG2M5UadiLiVg=="],
 
-    "@opentui/core": ["@opentui/core@0.5.9", "", { "dependencies": { "bun-ffi-structs": "0.3.1", "diff": "9.0.0", "marked": "17.0.1", "string-width": "7.2.0", "strip-ansi": "7.1.2" }, "optionalDependencies": { "@opentui/core-darwin-arm64": "0.5.9", "@opentui/core-darwin-x64": "0.5.9", "@opentui/core-linux-arm64": "0.5.9", "@opentui/core-linux-arm64-musl": "0.5.9", "@opentui/core-linux-x64": "0.5.9", "@opentui/core-linux-x64-musl": "0.5.9", "@opentui/core-win32-arm64": "0.5.9", "@opentui/core-win32-x64": "0.5.9" }, "peerDependencies": { "web-tree-sitter": "0.25.10" } }, "sha512-d0EWYyp6djitu1N1R0o75NrLl4TxY3oJEmRNrX9vSKKC5/jriGQdSV6lJmwiB77O0cxtBnPzWztAV79vA1J2fA=="],
+    "@opentui/core": ["@opentui/core@https://pkg.pr.new/anomalyco/opentui/@opentui/core@dd9fe495b1be9c7d2558a08216c83d5c985ba643", { "dependencies": { "bun-ffi-structs": "0.3.1", "diff": "9.0.0", "marked": "17.0.1", "string-width": "7.2.0", "strip-ansi": "7.1.2" }, "optionalDependencies": { "@opentui/core-darwin-arm64": "https://pkg.pr.new/anomalyco/opentui/@opentui/core-darwin-arm64@dd9fe495b1be9c7d2558a08216c83d5c985ba643", "@opentui/core-darwin-x64": "https://pkg.pr.new/anomalyco/opentui/@opentui/core-darwin-x64@dd9fe495b1be9c7d2558a08216c83d5c985ba643", "@opentui/core-linux-arm64": "https://pkg.pr.new/anomalyco/opentui/@opentui/core-linux-arm64@dd9fe495b1be9c7d2558a08216c83d5c985ba643", "@opentui/core-linux-arm64-musl": "https://pkg.pr.new/anomalyco/opentui/@opentui/core-linux-arm64-musl@dd9fe495b1be9c7d2558a08216c83d5c985ba643", "@opentui/core-linux-x64": "https://pkg.pr.new/anomalyco/opentui/@opentui/core-linux-x64@dd9fe495b1be9c7d2558a08216c83d5c985ba643", "@opentui/core-linux-x64-musl": "https://pkg.pr.new/anomalyco/opentui/@opentui/core-linux-x64-musl@dd9fe495b1be9c7d2558a08216c83d5c985ba643", "@opentui/core-win32-arm64": "https://pkg.pr.new/anomalyco/opentui/@opentui/core-win32-arm64@dd9fe495b1be9c7d2558a08216c83d5c985ba643", "@opentui/core-win32-x64": "https://pkg.pr.new/anomalyco/opentui/@opentui/core-win32-x64@dd9fe495b1be9c7d2558a08216c83d5c985ba643" }, "peerDependencies": { "web-tree-sitter": "0.25.10" } }, "sha512-iJKwj+aq0w0TYZu0xafb5Nj5eBObZcKc4+qHCpj5EAQBRCid3Z8nROmiwdO+aDDeqwTYzfG53u+MU3urEtiweQ=="],
 
-    "@opentui/core-darwin-arm64": ["@opentui/core-darwin-arm64@0.5.9", "", { "os": "darwin", "cpu": "arm64" }, "sha512-YcpWGD8GwoO3UYYw0kLDI4qof3ElSwWW5M3fNG+Kw87BSjCa5frZqak5xebdZ/XU5Xsk+BjgbBsxbzo9yrIjZQ=="],
+    "@opentui/core-darwin-arm64": ["@opentui/core-darwin-arm64@https://pkg.pr.new/anomalyco/opentui/@opentui/core-darwin-arm64@dd9fe495b1be9c7d2558a08216c83d5c985ba643", {}, "sha512-8Wo6B6VhFXu5Lq/HDXQCkxCJF4svJ3OPU+WcotQJuLT9/pXzik40WjTKVn3HECKiqQ3ryQS4ZxpnJIxlNDcpmg=="],
 
-    "@opentui/core-darwin-x64": ["@opentui/core-darwin-x64@0.5.9", "", { "os": "darwin", "cpu": "x64" }, "sha512-xgdZwgcwlDCqi0WPCS1d0GVSd+oKDFX+UVE1ZPei8u8W3pirXGSExxVHNku7QbEYCRvpCeMtoKIa6xN9cVTsoQ=="],
+    "@opentui/core-darwin-x64": ["@opentui/core-darwin-x64@https://pkg.pr.new/anomalyco/opentui/@opentui/core-darwin-x64@dd9fe495b1be9c7d2558a08216c83d5c985ba643", {}, "sha512-Tt+qGxp5VJZKmw54XdzebE6a+0QVA5Sk8KWUDHfWXn4ley6tvpMZowrG2/O6TpKHP6XdA/bHm+Ewetyk7BO2Zg=="],
 
-    "@opentui/core-linux-arm64": ["@opentui/core-linux-arm64@0.5.9", "", { "os": "linux", "cpu": "arm64" }, "sha512-vHBiJp69wMaL+fRMDpnXCCIpPyQRPZEWCWBatnblUUGIWUseqeQlaPow6ljHSbgAd/GjygAf4tFCyTqNT2ezZA=="],
+    "@opentui/core-linux-arm64": ["@opentui/core-linux-arm64@https://pkg.pr.new/anomalyco/opentui/@opentui/core-linux-arm64@dd9fe495b1be9c7d2558a08216c83d5c985ba643", {}, "sha512-p62IQHNFFQUzet57HMQndNQZtunDc0peSHudBoatCTV68QYKsD5gYjAK/BW1XY0zUoJM9Jk7BJnPBJPv1s5EYQ=="],
 
-    "@opentui/core-linux-arm64-musl": ["@opentui/core-linux-arm64-musl@0.5.9", "", { "os": "linux", "cpu": "arm64" }, "sha512-A7GW4NCTInj2vy3X2gVO2Sm8jllgdLxwPdOklPqyl+xqivQtyG9qwS5YXoCk9fBJt10ORhYKETEjYEnIE5xvMQ=="],
+    "@opentui/core-linux-arm64-musl": ["@opentui/core-linux-arm64-musl@https://pkg.pr.new/anomalyco/opentui/@opentui/core-linux-arm64-musl@dd9fe495b1be9c7d2558a08216c83d5c985ba643", {}, "sha512-qvQgkAdLSa1+SeMhMNBZ7zx7OlVi8yMsV+DDGTDrcc9sWXDzGJEKUq/R9XqqAag64Sloc12YA5oUYDKKj4E2VA=="],
 
-    "@opentui/core-linux-x64": ["@opentui/core-linux-x64@0.5.9", "", { "os": "linux", "cpu": "x64" }, "sha512-rdw7QVopVHwj6fMrJc7hPGVaYg2V5NBlW3MUfkrQBlUlo/87OC4aYDAh5oRIL1CIFD9LjDdh7hwmUNbn/K9Pcw=="],
+    "@opentui/core-linux-x64": ["@opentui/core-linux-x64@https://pkg.pr.new/anomalyco/opentui/@opentui/core-linux-x64@dd9fe495b1be9c7d2558a08216c83d5c985ba643", {}, "sha512-JIkwBP6yLhh4ViTR53kx/NCY5w1ocTcKMdWidpObKLVLIkBat97y085teSvgkh+RFuJnUaJK7114XgdEONCjSg=="],
 
-    "@opentui/core-linux-x64-musl": ["@opentui/core-linux-x64-musl@0.5.9", "", { "os": "linux", "cpu": "x64" }, "sha512-J4wQs1OMPZ4hR93Op1C/BLFmIta2mUJm4M7djevlgcWcal4RSNO4V8QvUXfogWGci+ADZqEmX2osQQDY5NVJpw=="],
+    "@opentui/core-linux-x64-musl": ["@opentui/core-linux-x64-musl@https://pkg.pr.new/anomalyco/opentui/@opentui/core-linux-x64-musl@dd9fe495b1be9c7d2558a08216c83d5c985ba643", {}, "sha512-M1BPZZ7eLE/nfnS7uypyIxg5JKfkkZSkehszISrQOf8zQl3+j3kOPy17RqSCJKZboGFQwmg8rwlaxGNxA6sfVQ=="],
 
-    "@opentui/core-win32-arm64": ["@opentui/core-win32-arm64@0.5.9", "", { "os": "win32", "cpu": "arm64" }, "sha512-OnmEsGLWwsHrm6sTsWSSesu4LGjSV1JNWqCsEItbuitWaqH6rXdSahSc5jMFsS57bZxUyaRz01yAqiZzUSXnVQ=="],
+    "@opentui/core-win32-arm64": ["@opentui/core-win32-arm64@https://pkg.pr.new/anomalyco/opentui/@opentui/core-win32-arm64@dd9fe495b1be9c7d2558a08216c83d5c985ba643", {}, "sha512-GFQ1GCA4FQg/MVpO1jt53X4fTaYsQTfW1EkOpQqmt/Rvls/oSklpElxh4ww5/giHEVnNxvcqX8+RG9U5DCmLpg=="],
 
-    "@opentui/core-win32-x64": ["@opentui/core-win32-x64@0.5.9", "", { "os": "win32", "cpu": "x64" }, "sha512-/CnAIfKL7+ZeGLyZoXV5zS71Nd8Zn97RUir2DAIY05MJozmfg5s7XOAdUNYuK1cg5mbwlAuqeAsfbuWUAEe15g=="],
+    "@opentui/core-win32-x64": ["@opentui/core-win32-x64@https://pkg.pr.new/anomalyco/opentui/@opentui/core-win32-x64@dd9fe495b1be9c7d2558a08216c83d5c985ba643", {}, "sha512-NKFUOLwBfd59koYiPgeqrP4hZERnG6B7+RnH2DNO3dAnIAl/7dISuOwWw/VacYBck4ToG0ZrbhBMTeBB2i5DqQ=="],
 
-    "@opentui/keymap": ["@opentui/keymap@0.5.9", "", { "dependencies": { "@opentui/core": "0.5.9" }, "peerDependencies": { "@opentui/react": "0.5.9", "@opentui/solid": "0.5.9", "react": ">=19.2.0", "solid-js": "1.9.12" }, "optionalPeers": ["@opentui/react", "@opentui/solid", "react", "solid-js"] }, "sha512-ZcRNeuCDv+LJ89BS5xBw90e0S1Etn6j41jflg6LZlWj4bnqjCU55dq0+zERUdkkC4rqD4SikM8q7V3ZfkwzyyQ=="],
+    "@opentui/keymap": ["@opentui/keymap@https://pkg.pr.new/anomalyco/opentui/@opentui/keymap@dd9fe495b1be9c7d2558a08216c83d5c985ba643", { "dependencies": { "@opentui/core": "https://pkg.pr.new/anomalyco/opentui/@opentui/core@dd9fe495b1be9c7d2558a08216c83d5c985ba643" }, "peerDependencies": { "@opentui/react": "0.5.9", "@opentui/solid": "0.5.9", "react": ">=19.2.0", "solid-js": "1.9.12" }, "optionalPeers": ["@opentui/react", "@opentui/solid", "react", "solid-js"] }, "sha512-Lw+wxniAxIqnZz9vFPwl8EsH33HZGnyukQTU/4dI01BwNKbx2hcxuFMjrHFP/MkqhvwmFXcvGSGfJrG8VLwFoA=="],
 
-    "@opentui/solid": ["@opentui/solid@0.5.9", "", { "dependencies": { "@babel/core": "7.28.0", "@babel/preset-typescript": "7.27.1", "@opentui/core": "0.5.9", "babel-plugin-module-resolver": "5.0.2", "babel-preset-solid": "1.9.12", "entities": "7.0.1", "s-js": "^0.4.9" }, "peerDependencies": { "solid-js": "1.9.12" } }, "sha512-zGSP/ia9ww+TTMvQMZjJW2+h7fg9YkVRIM723EgvP+v7ZBZ/0vMzPNh7FJ0jET3ysw0h5hsbvcYISs4sUcf+UA=="],
+    "@opentui/solid": ["@opentui/solid@https://pkg.pr.new/anomalyco/opentui/@opentui/solid@dd9fe495b1be9c7d2558a08216c83d5c985ba643", { "dependencies": { "@babel/core": "7.28.0", "@babel/preset-typescript": "7.27.1", "@opentui/core": "https://pkg.pr.new/anomalyco/opentui/@opentui/core@dd9fe495b1be9c7d2558a08216c83d5c985ba643", "babel-plugin-module-resolver": "5.0.2", "babel-preset-solid": "1.9.12", "entities": "7.0.1", "s-js": "^0.4.9" }, "peerDependencies": { "solid-js": "1.9.12" } }, "sha512-wtq+offTD/Hxd9KXW5eVjeBgtBiJiXakkk1Jo/8ULX2fvG+trtdaAHr0DrlHsRv/xyUMfxPBaHRwPe4Gk8+8sw=="],
 
     "@oslojs/asn1": ["@oslojs/asn1@1.0.0", "", { "dependencies": { "@oslojs/binary": "1.0.0" } }, "sha512-zw/wn0sj0j0QKbIXfIlnEcTviaCzYOY3V5rAyjR6YtOByFtJiT574+8p9Wlach0lZH9fddD4yb9laEAIl4vXQA=="],
 
@@ -5814,7 +5812,7 @@
 
     "y18n": ["y18n@5.0.8", "", {}, "sha512-0pfFzegeDWJHJIAmTLRP2DwHjdF5s7jo9tuztdQxAhINCdvS+3nGINqPd00AphqJR/0LhANUS6/+7SCb98YOfA=="],
 
-    "yallist": ["yallist@5.0.0", "", {}, "sha512-YgvUTfwqyc7UXVMrB+SImsVYSmTS8X/tSrtdNZMImM+n7+QTriRXyXim0mBrTXNeqzVF0KWGgHPeiyViFFrNDw=="],
+    "yallist": ["yallist@4.0.0", "", {}, "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="],
 
     "yaml": ["yaml@2.9.0", "", { "bin": { "yaml": "bin.mjs" } }, "sha512-2AvhNX3mb8zd6Zy7INTtSpl1F15HW6Wnqj0srWlkKLcpYl/gMIMJiyuGq2KeI2YFxUPjdlB+3Lc10seMLtL4cA=="],
 
@@ -6566,6 +6564,10 @@
 
     "openid-client/lru-cache": ["lru-cache@6.0.0", "", { "dependencies": { "yallist": "^4.0.0" } }, "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA=="],
 
+    "opentui-spinner/@opentui/core": ["@opentui/core@0.5.9", "", { "dependencies": { "bun-ffi-structs": "0.3.1", "diff": "9.0.0", "marked": "17.0.1", "string-width": "7.2.0", "strip-ansi": "7.1.2" }, "optionalDependencies": { "@opentui/core-darwin-arm64": "0.5.9", "@opentui/core-darwin-x64": "0.5.9", "@opentui/core-linux-arm64": "0.5.9", "@opentui/core-linux-arm64-musl": "0.5.9", "@opentui/core-linux-x64": "0.5.9", "@opentui/core-linux-x64-musl": "0.5.9", "@opentui/core-win32-arm64": "0.5.9", "@opentui/core-win32-x64": "0.5.9" }, "peerDependencies": { "web-tree-sitter": "0.25.10" } }, "sha512-d0EWYyp6djitu1N1R0o75NrLl4TxY3oJEmRNrX9vSKKC5/jriGQdSV6lJmwiB77O0cxtBnPzWztAV79vA1J2fA=="],
+
+    "opentui-spinner/@opentui/solid": ["@opentui/solid@0.5.9", "", { "dependencies": { "@babel/core": "7.28.0", "@babel/preset-typescript": "7.27.1", "@opentui/core": "0.5.9", "babel-plugin-module-resolver": "5.0.2", "babel-preset-solid": "1.9.12", "entities": "7.0.1", "s-js": "^0.4.9" }, "peerDependencies": { "solid-js": "1.9.12" } }, "sha512-zGSP/ia9ww+TTMvQMZjJW2+h7fg9YkVRIM723EgvP+v7ZBZ/0vMzPNh7FJ0jET3ysw0h5hsbvcYISs4sUcf+UA=="],
+
     "oxc-parser/@oxc-project/types": ["@oxc-project/types@0.127.0", "", {}, "sha512-aIYXQBo4lCbO4z0R3FHeucQHpF46l2LbMdxRvqvuRuW2OxdnSkcng5B8+K12spgLDj93rtN3+J2Vac/TIO+ciQ=="],
 
     "p-locate/p-limit": ["p-limit@3.1.0", "", { "dependencies": { "yocto-queue": "^0.1.0" } }, "sha512-TYOanM3wGwNGsZN2cVTYPArw454xnXj5qmWF1bEoAc4+cU/ol7GVh7odevjp1FNHduHc3KZMcFduxU5Xc6uJRQ=="],
@@ -6644,6 +6646,8 @@
 
     "svgo/commander": ["commander@11.1.0", "", {}, "sha512-yPVavfyCcRhmorC7rWlkHn15b4wDVgVmBA7kV4QVBsF7kv/9TKJAbAXVTxvTnwP8HHKjRCJDClKbciiYS7p0DQ=="],
 
+    "tar/yallist": ["yallist@5.0.0", "", {}, "sha512-YgvUTfwqyc7UXVMrB+SImsVYSmTS8X/tSrtdNZMImM+n7+QTriRXyXim0mBrTXNeqzVF0KWGgHPeiyViFFrNDw=="],
+
     "temp/rimraf": ["rimraf@2.6.3", "", { "dependencies": { "glob": "^7.1.3" }, "bin": { "rimraf": "./bin.js" } }, "sha512-mwqeW5XsA2qAejG46gYdENaxXjx9onRNCfn7L0duuP4hCuTIi/QO7PDK07KJfp1d+izWPrzEJDcSqBa0OZQriA=="],
 
     "tempy/type-fest": ["type-fest@0.16.0", "", {}, "sha512-eaBzG6MxNzEn9kiwvtre90cXaNLkmadMWa1zQMs3XORCXNbsH/OewwbxC5ia9dCxIxnTAsSxXJaa/p5y8DlvJg=="],
@@ -7450,11 +7454,29 @@
 
     "miniflare/sharp/@img/sharp-win32-x64": ["@img/sharp-win32-x64@0.33.5", "", { "os": "win32", "cpu": "x64" }, "sha512-MpY/o8/8kj+EcnxwvrP4aTJSWw/aZ7JIGR4aBeZkZw5B7/Jn+tY9/VNwtcoGmdT7GfggGIU4kygOMSbYnOrAbg=="],
 
-    "minipass-flush/minipass/yallist": ["yallist@4.0.0", "", {}, "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="],
+    "opentui-spinner/@opentui/core/@opentui/core-darwin-arm64": ["@opentui/core-darwin-arm64@0.5.9", "", { "os": "darwin", "cpu": "arm64" }, "sha512-YcpWGD8GwoO3UYYw0kLDI4qof3ElSwWW5M3fNG+Kw87BSjCa5frZqak5xebdZ/XU5Xsk+BjgbBsxbzo9yrIjZQ=="],
 
-    "minipass-pipeline/minipass/yallist": ["yallist@4.0.0", "", {}, "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="],
+    "opentui-spinner/@opentui/core/@opentui/core-darwin-x64": ["@opentui/core-darwin-x64@0.5.9", "", { "os": "darwin", "cpu": "x64" }, "sha512-xgdZwgcwlDCqi0WPCS1d0GVSd+oKDFX+UVE1ZPei8u8W3pirXGSExxVHNku7QbEYCRvpCeMtoKIa6xN9cVTsoQ=="],
 
-    "openid-client/lru-cache/yallist": ["yallist@4.0.0", "", {}, "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="],
+    "opentui-spinner/@opentui/core/@opentui/core-linux-arm64": ["@opentui/core-linux-arm64@0.5.9", "", { "os": "linux", "cpu": "arm64" }, "sha512-vHBiJp69wMaL+fRMDpnXCCIpPyQRPZEWCWBatnblUUGIWUseqeQlaPow6ljHSbgAd/GjygAf4tFCyTqNT2ezZA=="],
+
+    "opentui-spinner/@opentui/core/@opentui/core-linux-arm64-musl": ["@opentui/core-linux-arm64-musl@0.5.9", "", { "os": "linux", "cpu": "arm64" }, "sha512-A7GW4NCTInj2vy3X2gVO2Sm8jllgdLxwPdOklPqyl+xqivQtyG9qwS5YXoCk9fBJt10ORhYKETEjYEnIE5xvMQ=="],
+
+    "opentui-spinner/@opentui/core/@opentui/core-linux-x64": ["@opentui/core-linux-x64@0.5.9", "", { "os": "linux", "cpu": "x64" }, "sha512-rdw7QVopVHwj6fMrJc7hPGVaYg2V5NBlW3MUfkrQBlUlo/87OC4aYDAh5oRIL1CIFD9LjDdh7hwmUNbn/K9Pcw=="],
+
+    "opentui-spinner/@opentui/core/@opentui/core-linux-x64-musl": ["@opentui/core-linux-x64-musl@0.5.9", "", { "os": "linux", "cpu": "x64" }, "sha512-J4wQs1OMPZ4hR93Op1C/BLFmIta2mUJm4M7djevlgcWcal4RSNO4V8QvUXfogWGci+ADZqEmX2osQQDY5NVJpw=="],
+
+    "opentui-spinner/@opentui/core/@opentui/core-win32-arm64": ["@opentui/core-win32-arm64@0.5.9", "", { "os": "win32", "cpu": "arm64" }, "sha512-OnmEsGLWwsHrm6sTsWSSesu4LGjSV1JNWqCsEItbuitWaqH6rXdSahSc5jMFsS57bZxUyaRz01yAqiZzUSXnVQ=="],
+
+    "opentui-spinner/@opentui/core/@opentui/core-win32-x64": ["@opentui/core-win32-x64@0.5.9", "", { "os": "win32", "cpu": "x64" }, "sha512-/CnAIfKL7+ZeGLyZoXV5zS71Nd8Zn97RUir2DAIY05MJozmfg5s7XOAdUNYuK1cg5mbwlAuqeAsfbuWUAEe15g=="],
+
+    "opentui-spinner/@opentui/core/diff": ["diff@9.0.0", "", {}, "sha512-svtcdpS8CgJyqAjEQIXdb3OjhFVVYjzGAPO8WGCmRbrml64SPw/jJD4GoE98aR7r25A0XcgrK3F02yw9R/vhQw=="],
+
+    "opentui-spinner/@opentui/core/marked": ["marked@17.0.1", "", { "bin": { "marked": "bin/marked.js" } }, "sha512-boeBdiS0ghpWcSwoNm/jJBwdpFaMnZWRzjA6SkUMYb40SVaN1x7mmfGKp0jvexGcx+7y2La5zRZsYFZI6Qpypg=="],
+
+    "opentui-spinner/@opentui/solid/@babel/core": ["@babel/core@7.28.0", "", { "dependencies": { "@ampproject/remapping": "^2.2.0", "@babel/code-frame": "^7.27.1", "@babel/generator": "^7.28.0", "@babel/helper-compilation-targets": "^7.27.2", "@babel/helper-module-transforms": "^7.27.3", "@babel/helpers": "^7.27.6", "@babel/parser": "^7.28.0", "@babel/template": "^7.27.2", "@babel/traverse": "^7.28.0", "@babel/types": "^7.28.0", "convert-source-map": "^2.0.0", "debug": "^4.1.0", "gensync": "^1.0.0-beta.2", "json5": "^2.2.3", "semver": "^6.3.1" } }, "sha512-UlLAnTPrFdNGoFtbSXwcGFQBtQZJCNjaN6hQNP3UPvuNXT1i82N26KL3dZeIpNalWywr9IuQuncaAfUaS1g6sQ=="],
+
+    "opentui-spinner/@opentui/solid/babel-preset-solid": ["babel-preset-solid@1.9.12", "", { "dependencies": { "babel-plugin-jsx-dom-expressions": "^0.40.6" }, "peerDependencies": { "@babel/core": "^7.0.0", "solid-js": "^1.9.12" }, "optionalPeers": ["solid-js"] }, "sha512-LLqnuKVDlKpyBlMPcH6qEvs/wmS9a+NczppxJ3ryS/c0O5IiSFOIBQi9GzyiGDSbcJpx4Gr87jyFTos1MyEuWg=="],
 
     "p-locate/p-limit/yocto-queue": ["yocto-queue@0.1.0", "", {}, "sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q=="],
 
@@ -8162,8 +8184,6 @@
 
     "app-builder-lib/@electron/get/fs-extra/universalify": ["universalify@0.1.2", "", {}, "sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg=="],
 
-    "app-builder-lib/hosted-git-info/lru-cache/yallist": ["yallist@4.0.0", "", {}, "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="],
-
     "archiver-utils/glob/jackspeak/@isaacs/cliui": ["@isaacs/cliui@8.0.2", "", { "dependencies": { "string-width": "^5.1.2", "string-width-cjs": "npm:string-width@^4.2.0", "strip-ansi": "^7.0.1", "strip-ansi-cjs": "npm:strip-ansi@^6.0.1", "wrap-ansi": "^8.1.0", "wrap-ansi-cjs": "npm:wrap-ansi@^7.0.0" } }, "sha512-O8jcjabXaleOG9DQ0+ARXWZBTfnP4WNAqzuiJK7ll44AmxGKv/J2M4TPjxjY3znBCfvBXFzucm1twdyFybFqEA=="],
 
     "archiver-utils/glob/minimatch/brace-expansion": ["brace-expansion@2.1.4", "", { "dependencies": { "balanced-match": "^1.0.0" } }, "sha512-hGfVzPxthbf3+2yjg/RBs60cB0FhqBS/zvdV/4wn4/BmN0bNMMHPc4V/BbFieqf1TKAGGAHnY4eSjajCl0f2Xg=="],
@@ -8256,6 +8276,8 @@
 
     "js-beautify/glob/path-scurry/lru-cache": ["lru-cache@10.4.3", "", {}, "sha512-JNAzZcXrCt42VGLuYz0zfAzDfAvJWW6AfYlDBQyDV5DClI2m5sAmK+OIO7s59XfsRsWHp02jAJrRadPRGTt6SQ=="],
 
+    "opentui-spinner/@opentui/solid/@babel/core/semver": ["semver@6.3.1", "", { "bin": { "semver": "bin/semver.js" } }, "sha512-BR7VvDCVHO+q2xBEWskxS6DJE1qRnb7DxzUrogb71CWoSficBxYsiAGd+Kl0mmq/MprG9yArRkyrQxTO6XjMzA=="],
+
     "pkg-dir/find-up/locate-path/p-locate": ["p-locate@4.1.0", "", { "dependencies": { "p-limit": "^2.2.0" } }, "sha512-R79ZZ/0wAxKGu3oYMlz8jy/kbhsNrS7SKZ7PxEHBgJ5+F2mtFW2fK2cOtBh1cHYkQsbzFV7I+EoRKe6Yt0oK7A=="],
 
     "pkg-up/find-up/locate-path/p-locate": ["p-locate@3.0.0", "", { "dependencies": { "p-limit": "^2.0.0" } }, "sha512-x+12w/To+4GFfgJhBEpiDcLozRJGegY+Ei7/z0tSLkMmxGZNybVMSfWj9aJn8Z5Fc7dBUNJOOVgPv2H7IwulSQ=="],

nix/hashes.json

@@ -1,8 +1,8 @@
 {
   "nodeModules": {
-    "x86_64-linux": "sha256-Fmwqp/fjTMX7gQW01Zgta51reLHp1S53GSQgBcJePrY=",
-    "aarch64-linux": "sha256-KLI6OIbvycMePKxt66nNKeILYJSEkufOIaSawZ/gotc=",
-    "aarch64-darwin": "sha256-go1wmrsHfYfJ3ukUIR/fveobyVba4E9G/rdsB/J2cQQ=",
-    "x86_64-darwin": "sha256-UnVYMijlG12k4RLFkTwf4Or0yXqFSwe1Ji6QCGufjzg="
+    "x86_64-linux": "sha256-EtUp4pHl9TyPtRrLGvk/X7kd2LuIxNxCpUwF5aLtzN4=",
+    "aarch64-linux": "sha256-m0j/pMZCguclR3/T9JmzCfi11YzmIvBFyR2bVhIO37Y=",
+    "aarch64-darwin": "sha256-nqefk68ZTUfNU15q1WkXaGsFzPNwOjCtMHpp6WrpNqM=",
+    "x86_64-darwin": "sha256-syD7hX62E4yCDV/wux1QKw4q/zZr24f99Y2mmzMJo6o="
   }
 }

package.json

@@ -49,9 +49,9 @@
       "@octokit/rest": "22.0.0",
       "@hono/standard-validator": "0.2.0",
       "@hono/zod-validator": "0.4.2",
-      "@opentui/core": "0.5.9",
-      "@opentui/keymap": "0.5.9",
-      "@opentui/solid": "0.5.9",
+      "@opentui/core": "https://pkg.pr.new/anomalyco/opentui/@opentui/core@dd9fe495b1be9c7d2558a08216c83d5c985ba643",
+      "@opentui/keymap": "https://pkg.pr.new/anomalyco/opentui/@opentui/keymap@dd9fe495b1be9c7d2558a08216c83d5c985ba643",
+      "@opentui/solid": "https://pkg.pr.new/anomalyco/opentui/@opentui/solid@dd9fe495b1be9c7d2558a08216c83d5c985ba643",
       "@tanstack/solid-virtual": "3.13.37",
       "@shikijs/stream": "4.4.3",
       "@standard-schema/spec": "1.1.0",

packages/ai/README.md

@@ -214,22 +214,40 @@ the requests sent by code under test:
 import { Effect } from "effect"
 import { TestLLM } from "@opencode-ai/ai/testing"
 
-const testLLM = TestLLM.layer({
-  fallback: TestLLM.text("Hello from the test model", "text-1"),
-})
-
-// TestLLM.clientLayer provides LLMClient.Service and consumes TestLLM.Service.
 const programWithTestClient = Effect.gen(function* () {
+  const test = yield* TestLLM.Test
+  yield* test.push(TestLLM.text("Hello from the test model", "text-1"))
   const result = yield* program
-  const test = yield* TestLLM.Service
-  console.log(test.requests)
+  console.log(yield* test.requests())
   return result
-}).pipe(Effect.provide(TestLLM.clientLayer), Effect.provide(testLLM))
+}).pipe(Effect.provide(TestLLM.testLayer()))
 ```
 
-`TestLLM.push(...)` scripts one-shot responses, `TestLLM.always(...)` changes the fallback, and
-`TestLLM.wait(...)` lets concurrent tests wait until a request has arrived. Every received canonical request is
-available on the yielded `TestLLM.Service`.
+`testLayer()` provides the same object under `LLMClient.Service` and `TestLLM.Test`. Production consumes the
+normal client; tests use the additional controls. Each layer build has fresh state.
+
+- `test.push(...)` queues one-shot responses in execution order. Each argument is one response.
+- `test.always(response)` installs a repeatable fallback. The layer's `fallback` option sets its initial value.
+- `test.serve(request => response)` installs a request-dependent fallback. `always` and `serve` replace each
+  other without changing queued replies; queued replies take precedence.
+- `test.requests()` returns an array snapshot. `transformRequest` changes only the recorded observation;
+  `serve` receives the original canonical request.
+- `test.wait(count)` waits for request arrivals, not output or completion, and supports concurrent waiters.
+- `test.gate()` returns a scoped gate with countable `started` notifications and a `release` Effect. Release
+  unblocks all requests captured by that gate; closing its scope also releases it. Effect-aware test runners
+  already provide Scope.
+
+Constructing `stream()` or `generate()` does not record a request, invoke a responder, or consume a script.
+Each execution does. An exhausted queue without a fallback defects immediately rather than waiting for a
+future reply.
+
+Responses remain canonical event arrays or arbitrary `Stream<LLMEvent, AIError>` values. The client consumes
+supplied streams directly, preserving failure identity, finalizers, incomplete output, and post-finish tails;
+it does not repair or truncate them.
+
+The published legacy `Service`, `layer`, `clientLayer`, and module-level controls remain available as adapters
+over the same implementation, including the legacy live `requests` array. New tests should use `Test` and
+`testLayer`.
 
 ## Caching
 

packages/ai/src/protocols/bedrock-converse.ts

@@ -496,6 +496,7 @@ const mapUsage = (usage: BedrockUsageSchema | undefined, providerMetadataKey: st
 interface ParserState {
   readonly providerMetadataKey: string
   readonly tools: ToolStream.State<number>
+  readonly finishedTools: ReadonlySet<number>
   // Bedrock splits the finish into `messageStop` (carries `stopReason`) and
   // `metadata` (carries usage). Hold the terminal event in state so `onHalt`
   // can emit exactly one finish after both chunks have had a chance to arrive.
@@ -574,6 +575,7 @@ const step = (state: ParserState, event: BedrockEvent) =>
 
     if (event.contentBlockDelta?.delta?.toolUse) {
       const index = event.contentBlockDelta.contentBlockIndex
+      if (state.finishedTools.has(index)) return [state, []] as const
       const result = ToolStream.appendExisting(
         ADAPTER,
         state.tools,
@@ -612,6 +614,7 @@ const step = (state: ParserState, event: BedrockEvent) =>
             state.hasToolCalls,
           lifecycle,
           tools: result.tools,
+          finishedTools: resultEvents.length > 0 ? new Set([...state.finishedTools, index]) : state.finishedTools,
           reasoningSignatures: Object.fromEntries(
             Object.entries(state.reasoningSignatures).filter(([key]) => key !== String(index)),
           ),
@@ -703,6 +706,7 @@ export const protocol = Protocol.make({
     initial: (request) => ({
       providerMetadataKey: request.model.route.providerMetadataKey ?? String(request.model.provider),
       tools: ToolStream.empty<number>(),
+      finishedTools: new Set<number>(),
       pendingFinish: undefined,
       hasToolCalls: false,
       lifecycle: Lifecycle.initial(),

packages/ai/src/protocols/open-responses.ts

@@ -391,17 +391,19 @@ export interface ParserState {
   readonly name: string
   readonly providerMetadataKey: string
   readonly tools: ToolStream.State<string>
+  // Call ids stay independent of item ids, which may be omitted or reused.
+  readonly completedTools: ReadonlySet<string>
   readonly hasFunctionCall: boolean
   readonly lifecycle: Lifecycle.State
   readonly outputItems: Readonly<Record<number, string>>
-  readonly messageItems: ReadonlySet<string>
-  readonly messagePhases: Readonly<Record<string, MessagePhase | null>>
+  readonly message: { readonly id: string; readonly phase: MessagePhase | null | undefined } | undefined
   readonly reasoningItems: Readonly<Record<string, ReasoningStreamItem>>
 }
 
 type ReasoningSummaryStatus = "active" | "can-conclude" | "concluded"
 
 interface ReasoningStreamItem {
+  readonly open: boolean
   readonly encryptedContent: string | null | undefined
   // Keyed by the wire protocol's numeric `summary_index`. JS object keys coerce to
   // strings, but typing the map as `Record<number, ...>` documents intent
@@ -826,16 +828,16 @@ const TERMINAL_TYPES = new Set(["error", "response.completed", "response.incompl
 export const terminal = (event: Event) => TERMINAL_TYPES.has(event.type)
 
 const onOutputTextDelta = (state: ParserState, event: Event, id: string): StepResult => {
-  if (!event.delta || !state.messageItems.has(id)) return [state, NO_EVENTS]
+  if (!event.delta || state.message?.id !== id) return [state, NO_EVENTS]
   const events: LLMEvent[] = []
-  const phase = state.messagePhases[id]
+  const phase = state.message.phase
   const metadata = providerMetadata(state, { itemId: id, ...(phase === undefined ? {} : { phase }) })
   const lifecycle = Lifecycle.textStart(state.lifecycle, events, id, metadata)
   return [{ ...state, lifecycle: Lifecycle.textDelta(lifecycle, events, id, event.delta) }, events]
 }
 
 const onOutputTextDone = (state: ParserState, event: Event, id: string): StepResult => {
-  if (state.messageItems.has(id)) {
+  if (state.message?.id === id) {
     if (state.lifecycle.text.has(id) || event.text === undefined) return [state, NO_EVENTS]
     return onOutputTextDelta(state, { ...event, delta: event.text }, id)
   }
@@ -846,18 +848,62 @@ const onOutputTextDone = (state: ParserState, event: Event, id: string): StepRes
 export const outputItemID = (state: ParserState, event: Event) =>
   event.output_index === undefined ? event.item_id : (state.outputItems[event.output_index] ?? event.item_id)
 
-export const onReasoningDelta = (state: ParserState, event: Event, itemID: string): StepResult => {
+const startReasoningSummaryPart = (state: ParserState, itemID: string, index: number): StepResult => {
   const item = state.reasoningItems[itemID]
-  if (!event.delta || !item) return [state, NO_EVENTS]
-  const index = event.summary_index ?? 0
+  if (!item?.open || index === 0 || item.summaryParts[index] !== undefined) return [state, NO_EVENTS]
+
   const events: LLMEvent[] = []
+  const lifecycle = Object.entries(item.summaryParts)
+    .filter((entry) => entry[1] !== "concluded")
+    .reduce(
+      (lifecycle, entry) =>
+        Lifecycle.reasoningEnd(lifecycle, events, `${itemID}:${entry[0]}`, providerMetadata(state, { itemId: itemID })),
+      state.lifecycle,
+    )
   return [
     {
       ...state,
-      lifecycle: Lifecycle.reasoningDelta(state.lifecycle, events, `${itemID}:${index}`, event.delta),
+      lifecycle: Lifecycle.reasoningStart(
+        lifecycle,
+        events,
+        `${itemID}:${index}`,
+        providerMetadata(state, { itemId: itemID, reasoningEncryptedContent: item.encryptedContent ?? null }),
+      ),
       reasoningItems: {
         ...state.reasoningItems,
-        [itemID]: { ...item, deltaIndexes: new Set([...item.deltaIndexes, index]) },
+        [itemID]: {
+          ...item,
+          summaryParts: {
+            ...Object.fromEntries(
+              Object.entries(item.summaryParts).map((entry) =>
+                entry[1] === "concluded" ? entry : [entry[0], "concluded" as const],
+              ),
+            ),
+            [index]: "active",
+          },
+        },
+      },
+    },
+    events,
+  ]
+}
+
+export const onReasoningDelta = (state: ParserState, event: Event, itemID: string): StepResult => {
+  const item = state.reasoningItems[itemID]
+  if (!event.delta || !item?.open) return [state, NO_EVENTS]
+  const index = event.summary_index ?? 0
+  if (item.summaryParts[index] === "concluded") return [state, NO_EVENTS]
+  const [started, emitted] = startReasoningSummaryPart(state, itemID, index)
+  const current = started.reasoningItems[itemID]
+  if (!current) return [started, emitted]
+  const events: LLMEvent[] = [...emitted]
+  return [
+    {
+      ...started,
+      lifecycle: Lifecycle.reasoningDelta(started.lifecycle, events, `${itemID}:${index}`, event.delta),
+      reasoningItems: {
+        ...started.reasoningItems,
+        [itemID]: { ...current, deltaIndexes: new Set([...current.deltaIndexes, index]) },
       },
     },
     events,
@@ -869,7 +915,7 @@ export const onReasoningDelta = (state: ParserState, event: Event, itemID: strin
 // as a single delta unless that summary index already streamed one.
 export const onReasoningDone = (state: ParserState, event: Event, itemID: string): StepResult => {
   const item = state.reasoningItems[itemID]
-  if (!item || typeof event.text !== "string") return [state, NO_EVENTS]
+  if (!item?.open || typeof event.text !== "string") return [state, NO_EVENTS]
   const index = event.summary_index ?? 0
   if (item.deltaIndexes.has(index)) return [state, NO_EVENTS]
   return onReasoningDelta(state, { ...event, delta: event.text }, itemID)
@@ -878,32 +924,48 @@ export const onReasoningDone = (state: ParserState, event: Event, itemID: string
 const reasoningMetadata = (state: ParserState, item: StreamItem & { id: string }) =>
   providerMetadata(state, { itemId: item.id, reasoningEncryptedContent: item.encrypted_content ?? null })
 
-// Responses APIs stream reasoning items in a stable order:
+// Responses APIs normally stream reasoning items in this order:
 //   `output_item.added` (reasoning) →
 //     `reasoning_summary_part.added` (index=0) →
 //     `reasoning_summary_text.delta` →
 //     `reasoning_summary_part.done` (index=0) →
 //     (repeat for index>0) →
 //   `output_item.done` (reasoning).
-// The handlers below rely on this ordering: `onOutputItemAdded` seeds the
-// per-item entry, `onReasoningSummaryPartAdded` for `summary_index === 0`
-// short-circuits when the entry already exists, and higher-index handlers
-// fold against the same entry. Behaviour for out-of-order events is
-// best-effort, not guaranteed.
+// `onOutputItemAdded` seeds the per-item entry, while each later part start is
+// also an implicit boundary for the previous part. This keeps the common event
+// lifecycle ordered when a compatible provider omits or delays a part-done event.
 const onOutputItemAdded = (state: ParserState, event: Event): StepResult => {
   const item = event.item
   if (item?.type === "message" && item.id !== undefined) {
+    const itemID = item.id
     const phase = messagePhase(item.phase)
+    // A new message closes earlier messages, including ones that never streamed.
+    const events: LLMEvent[] = []
+    const lifecycle = [...state.lifecycle.text]
+      .filter((id) => id !== itemID)
+      .reduce((lifecycle, id) => {
+        const openPhase = state.message?.id === id ? state.message.phase : undefined
+        return Lifecycle.textEnd(
+          lifecycle,
+          events,
+          id,
+          providerMetadata(state, { itemId: id, ...(openPhase === undefined ? {} : { phase: openPhase }) }),
+        )
+      }, state.lifecycle)
     return [
       {
         ...state,
-        messageItems: new Set([...state.messageItems, item.id]),
-        messagePhases: phase === undefined ? state.messagePhases : { ...state.messagePhases, [item.id]: phase },
+        lifecycle,
+        message: {
+          id: itemID,
+          phase: phase === undefined && state.message?.id === itemID ? state.message.phase : phase,
+        },
       },
-      NO_EVENTS,
+      events,
     ]
   }
   if (item && isReasoningItem(item)) {
+    if (state.reasoningItems[item.id] !== undefined) return [state, NO_EVENTS]
     const events: LLMEvent[] = []
     return [
       {
@@ -912,6 +974,7 @@ const onOutputItemAdded = (state: ParserState, event: Event): StepResult => {
         reasoningItems: {
           ...state.reasoningItems,
           [item.id]: {
+            open: true,
             encryptedContent: item.encrypted_content,
             summaryParts: { 0: "active" },
             deltaIndexes: new Set(),
@@ -923,6 +986,8 @@ const onOutputItemAdded = (state: ParserState, event: Event): StepResult => {
   }
   if (item?.type !== "function_call" || !item.call_id) return [state, NO_EVENTS]
   const id = item.id ?? item.call_id
+  if (Object.values(state.tools).some((tool) => tool?.id === item.call_id) || state.completedTools.has(item.call_id))
+    return [state, NO_EVENTS]
   const metadata = item.id !== undefined ? providerMetadata(state, { itemId: item.id }) : undefined
   const events: LLMEvent[] = []
   const lifecycle = Lifecycle.stepStart(state.lifecycle, events)
@@ -943,55 +1008,14 @@ const onOutputItemAdded = (state: ParserState, event: Event): StepResult => {
 
 const onReasoningSummaryPartAdded = (state: ParserState, event: Event): StepResult => {
   if (event.item_id === undefined || event.summary_index === undefined) return [state, NO_EVENTS]
-  const item = state.reasoningItems[event.item_id]
-  if (!item) return [state, NO_EVENTS]
-  if (event.summary_index === 0) return [state, NO_EVENTS]
-
-  const events: LLMEvent[] = []
-  const closed = Object.entries(item.summaryParts)
-    .filter((entry) => entry[1] === "can-conclude")
-    .reduce(
-      (lifecycle, entry) =>
-        Lifecycle.reasoningEnd(
-          lifecycle,
-          events,
-          `${event.item_id}:${entry[0]}`,
-          providerMetadata(state, { itemId: event.item_id }),
-        ),
-      state.lifecycle,
-    )
-  return [
-    {
-      ...state,
-      lifecycle: Lifecycle.reasoningStart(
-        closed,
-        events,
-        `${event.item_id}:${event.summary_index}`,
-        providerMetadata(state, { itemId: event.item_id, reasoningEncryptedContent: item.encryptedContent ?? null }),
-      ),
-      reasoningItems: {
-        ...state.reasoningItems,
-        [event.item_id]: {
-          ...item,
-          summaryParts: {
-            ...Object.fromEntries(
-              Object.entries(item.summaryParts).map((entry) =>
-                entry[1] === "can-conclude" ? [entry[0], "concluded" as const] : entry,
-              ),
-            ),
-            [event.summary_index]: "active",
-          },
-        },
-      },
-    },
-    events,
-  ]
+  return startReasoningSummaryPart(state, event.item_id, event.summary_index)
 }
 
 const onReasoningSummaryPartDone = (state: ParserState, event: Event): StepResult => {
   if (event.item_id === undefined || event.summary_index === undefined) return [state, NO_EVENTS]
   const item = state.reasoningItems[event.item_id]
-  if (!item) return [state, NO_EVENTS]
+  if (!item?.open) return [state, NO_EVENTS]
+  if (item.summaryParts[event.summary_index] !== "active") return [state, NO_EVENTS]
   return [
     {
       ...state,
@@ -1047,11 +1071,8 @@ const onOutputItemDone = Effect.fn("OpenResponses.onOutputItemDone")(function* (
 
   if (item.type === "message" && item.id !== undefined) {
     const itemPhase = messagePhase(item.phase)
-    const phase = itemPhase === undefined ? state.messagePhases[item.id] : itemPhase
+    const phase = itemPhase === undefined && state.message?.id === item.id ? state.message.phase : itemPhase
     const events: LLMEvent[] = []
-    const messageItems = new Set(state.messageItems)
-    messageItems.delete(item.id)
-    const { [item.id]: _phase, ...messagePhases } = state.messagePhases
     return [
       {
         ...state,
@@ -1061,8 +1082,7 @@ const onOutputItemDone = Effect.fn("OpenResponses.onOutputItemDone")(function* (
           item.id,
           providerMetadata(state, { itemId: item.id, ...(phase === undefined ? {} : { phase }) }),
         ),
-        messageItems,
-        messagePhases,
+        message: state.message?.id === item.id ? undefined : state.message,
       },
       events,
     ] satisfies StepResult
@@ -1070,20 +1090,36 @@ const onOutputItemDone = Effect.fn("OpenResponses.onOutputItemDone")(function* (
 
   if (item.type === "function_call") {
     if (!item.call_id || !item.name) return [state, NO_EVENTS] satisfies StepResult
-    const id = item.id ?? item.call_id
-    const tools = state.tools[id]
-      ? state.tools
-      : ToolStream.start(state.tools, id, {
-          id: item.call_id,
-          name: item.name,
-          providerMetadata: item.id !== undefined ? providerMetadata(state, { itemId: item.id }) : undefined,
-        })
+    const callID = item.call_id
+    if (state.completedTools.has(callID)) return [state, NO_EVENTS] satisfies StepResult
+    const metadata = item.id !== undefined ? providerMetadata(state, { itemId: item.id }) : undefined
+    const fallback = item.id ?? callID
+    // Match the pending tool by call id so item events that disagree on
+    // whether `item.id` is present still resolve the same call.
+    const registered =
+      state.tools[fallback] !== undefined
+        ? fallback
+        : Object.keys(state.tools).find((key) => state.tools[key]?.id === callID)
+    const id = registered ?? fallback
+    const tools =
+      registered !== undefined
+        ? state.tools
+        : ToolStream.start(state.tools, id, {
+            id: callID,
+            name: item.name,
+            providerMetadata: metadata,
+          })
     const result =
       item.arguments === undefined
         ? yield* ToolStream.finish(state.id, tools, id)
         : yield* ToolStream.finishWithInput(state.id, tools, id, item.arguments)
     const events: LLMEvent[] = []
-    const resultEvents = result.events ?? []
+    const finished = result.events ?? []
+    // A done-only call never streamed a start event, so open its lifecycle here.
+    const resultEvents =
+      registered !== undefined || finished.length === 0
+        ? finished
+        : [LLMEvent.toolInputStart({ id: callID, name: item.name, providerMetadata: metadata }), ...finished]
     const lifecycle = resultEvents.length ? Lifecycle.stepStart(state.lifecycle, events) : state.lifecycle
     events.push(...resultEvents)
     return [
@@ -1094,6 +1130,7 @@ const onOutputItemDone = Effect.fn("OpenResponses.onOutputItemDone")(function* (
           resultEvents.some((event) => LLMEvent.is.toolCall(event) || LLMEvent.is.toolInputError(event)) ||
           state.hasFunctionCall,
         tools: result.tools,
+        completedTools: new Set([...state.completedTools, callID]),
       },
       events,
     ] satisfies StepResult
@@ -1104,20 +1141,49 @@ const onOutputItemDone = Effect.fn("OpenResponses.onOutputItemDone")(function* (
     const metadata = reasoningMetadata(state, item)
     const reasoningItem = state.reasoningItems[item.id]
     if (reasoningItem) {
+      if (!reasoningItem.open) return [state, NO_EVENTS] satisfies StepResult
       const lifecycle = Object.entries(reasoningItem.summaryParts)
         .filter((entry) => entry[1] === "active" || entry[1] === "can-conclude")
         .reduce(
           (lifecycle, entry) => Lifecycle.reasoningEnd(lifecycle, events, `${item.id}:${entry[0]}`, metadata),
           state.lifecycle,
         )
-      const { [item.id]: _removed, ...reasoningItems } = state.reasoningItems
-      return [{ ...state, lifecycle, reasoningItems }, events] satisfies StepResult
+      return [
+        {
+          ...state,
+          lifecycle,
+          reasoningItems: {
+            ...state.reasoningItems,
+            [item.id]: {
+              ...reasoningItem,
+              open: false,
+              encryptedContent: item.encrypted_content ?? reasoningItem.encryptedContent,
+            },
+          },
+        },
+        events,
+      ] satisfies StepResult
     }
     if (!state.lifecycle.reasoning.has(item.id)) {
       const lifecycle = Lifecycle.stepStart(state.lifecycle, events)
       events.push(LLMEvent.reasoningStart({ id: item.id, providerMetadata: metadata }))
       events.push(LLMEvent.reasoningEnd({ id: item.id, providerMetadata: metadata }))
-      return [{ ...state, lifecycle }, events] satisfies StepResult
+      return [
+        {
+          ...state,
+          lifecycle,
+          reasoningItems: {
+            ...state.reasoningItems,
+            [item.id]: {
+              open: false,
+              encryptedContent: item.encrypted_content,
+              summaryParts: { 0: "concluded" },
+              deltaIndexes: new Set(),
+            },
+          },
+        },
+        events,
+      ] satisfies StepResult
     }
     return [
       { ...state, lifecycle: Lifecycle.reasoningEnd(state.lifecycle, events, item.id, metadata) },
@@ -1139,7 +1205,7 @@ const onResponseFinish = Effect.fn("OpenResponses.onResponseFinish")(function* (
             if (
               id === undefined ||
               ((item.type !== "function_call" || !current.tools[id]) &&
-                (item.type !== "reasoning" || !current.reasoningItems[id]))
+                (item.type !== "reasoning" || !current.reasoningItems[id]?.open))
             )
               return Effect.succeed([current, events] satisfies StepResult)
             return onOutputItemDone(current, { type: "response.output_item.done", item }).pipe(
@@ -1256,6 +1322,13 @@ export const step = (state: ParserState, input: Event) => {
   if (event.type === "response.output_item.added") {
     if (event.item?.type === "message" && event.item.id === undefined)
       return ProviderShared.eventError(state.id, `${event.type} message is missing id`)
+    if (
+      event.item &&
+      isReasoningItem(event.item) &&
+      state.reasoningItems[event.item.id] === undefined &&
+      state.lifecycle.reasoning.size > 0
+    )
+      return ProviderShared.eventError(state.id, `${event.type} started reasoning before the previous item ended`)
     const id = event.item?.id ?? (event.item?.type === "function_call" ? event.item.call_id : undefined)
     return Effect.succeed(
       onOutputItemAdded(
@@ -1305,10 +1378,10 @@ export const initial = (request: LLMRequest, extension: Extension = BASE): Parse
   providerMetadataKey: request.model.route.providerMetadataKey ?? "openresponses",
   hasFunctionCall: false,
   tools: ToolStream.empty<string>(),
+  completedTools: new Set<string>(),
   lifecycle: Lifecycle.initial(),
   outputItems: {},
-  messageItems: new Set<string>(),
-  messagePhases: {},
+  message: undefined,
   reasoningItems: {},
 })
 

packages/ai/src/protocols/openai-chat.ts

@@ -3,6 +3,7 @@ import { Tool } from "@opencode-ai/schema/tool"
 import { Route } from "../route/client.js"
 import { Auth } from "../route/auth.js"
 import { Endpoint } from "../route/endpoint.js"
+import { Framing } from "../route/framing.js"
 import { HttpTransport } from "../route/transport/index.js"
 import { Protocol } from "../route/protocol.js"
 import {
@@ -245,6 +246,8 @@ export const OpenAIChatEvent = Schema.StructWithRest(
   [Schema.Record(Schema.String, Schema.Unknown)],
 )
 export type OpenAIChatEvent = Schema.Schema.Type<typeof OpenAIChatEvent>
+const DONE = "[DONE]" as const
+const OpenAIChatStreamEvent = Schema.Union([Schema.Literal(DONE), Protocol.jsonEvent(OpenAIChatEvent)])
 type OpenAIChatRequestMessage = LLMRequest["messages"][number]
 
 interface PendingToolDelta {
@@ -997,33 +1000,12 @@ const step = (state: ParserState, event: OpenAIChatEvent) =>
       lifecycle = Lifecycle.reasoningStart(lifecycle, events, "reasoning-0", deltaMetadata)
     const reasoningEmitted = state.reasoningEmitted || lifecycle.reasoning.has("reasoning-0")
 
-    if (delta?.content) {
-      lifecycle = Lifecycle.reasoningEnd(
-        lifecycle,
-        events,
-        "reasoning-0",
-        reasoningMetadata(
-          state.providerMetadataKey,
-          reasoningField,
-          reasoningDetailsObserved ? state.reasoningDetails : undefined,
-        ),
-      )
-      lifecycle = Lifecycle.textDelta(lifecycle, events, "text-0", delta.content)
-    }
+    // Reasoning is one response-wide channel: it stays open alongside text and
+    // refusal output so late reasoning deltas and details join the same block,
+    // and `finishEvents` closes it once with the complete metadata.
+    if (delta?.content) lifecycle = Lifecycle.textDelta(lifecycle, events, "text-0", delta.content)
 
-    if (delta?.refusal) {
-      lifecycle = Lifecycle.reasoningEnd(
-        lifecycle,
-        events,
-        "reasoning-0",
-        reasoningMetadata(
-          state.providerMetadataKey,
-          reasoningField,
-          reasoningDetailsObserved ? state.reasoningDetails : undefined,
-        ),
-      )
-      lifecycle = Lifecycle.textDelta(lifecycle, events, "text-0", delta.refusal)
-    }
+    if (delta?.refusal) lifecycle = Lifecycle.textDelta(lifecycle, events, "text-0", delta.refusal)
 
     // Compatible providers may omit indexes. Prefer durable identity, then use
     // batch position for parallel deltas or the latest call for sparse chunks.
@@ -1129,10 +1111,12 @@ const finishEvents = Effect.fn("OpenAIChat.finishEvents")(function* (state: Pars
           state.finishReason.normalized === "stop" && hasToolCalls ? "tool-calls" : state.finishReason.normalized,
       }
     : { normalized: hasToolCalls ? ("tool-calls" as const) : ("stop" as const) }
+  // Snapshot details at publish time so the emitted event never observes later
+  // mutation of the accumulated `reasoningDetails` array.
   const metadata = reasoningMetadata(
     state.providerMetadataKey,
     state.reasoningField,
-    state.reasoningDetailsObserved ? state.reasoningDetails : undefined,
+    state.reasoningDetailsObserved ? [...state.reasoningDetails] : undefined,
   )
   const started =
     state.reasoningDetailsObserved && !state.reasoningEmitted
@@ -1166,7 +1150,7 @@ export const protocol = Protocol.make({
     from: fromRequest,
   },
   stream: {
-    event: Protocol.jsonEvent(OpenAIChatEvent),
+    event: OpenAIChatStreamEvent,
     initial: (request) => ({
       providerMetadataKey: request.model.route.providerMetadataKey ?? String(request.model.provider),
       tools: ToolStream.empty<number>(),
@@ -1180,12 +1164,14 @@ export const protocol = Protocol.make({
       nextToolIndex: 0,
       requireFinishReason: request.model.compatibility?.requireFinishReason ?? true,
     }),
-    step,
+    step: (state: ParserState, event) => (event === DONE ? Effect.succeed([state, []] as const) : step(state, event)),
+    terminal: (event) => event === DONE,
     onHalt: finishEvents,
   },
 })
 
-export const httpTransport = HttpTransport.sseJson.with<OpenAIChatBody>()
+export const framing = Framing.sseWithDone
+export const httpTransport = HttpTransport.sseJson.with<OpenAIChatBody>().with({ framing })
 
 export const route = Route.make({
   id: ADAPTER,

packages/ai/src/protocols/openai-compatible-chat.ts

@@ -1,6 +1,5 @@
 import { Route, type RouteRoutedLanguageModelInput } from "../route/client.js"
 import { Endpoint } from "../route/endpoint.js"
-import { Framing } from "../route/framing.js"
 import * as OpenAIChat from "./openai-chat.js"
 
 const ADAPTER = "openai-compatible-chat"
@@ -19,7 +18,7 @@ export const route = Route.make({
   providerMetadataKey: "openai",
   protocol: OpenAIChat.protocol,
   endpoint: Endpoint.path("/chat/completions"),
-  framing: Framing.sse,
+  framing: OpenAIChat.framing,
 })
 
 export * as OpenAICompatibleChat from "./openai-compatible-chat.js"

packages/ai/src/protocols/shared.ts

@@ -207,15 +207,16 @@ export const errorText = (error: unknown) => {
 
 /**
  * `framing` step for Server-Sent Events. Decodes UTF-8, runs the SSE channel
- * decoder, optionally filters named events, and drops empty / `[DONE]`
- * keep-alive events so the protocol event schema sees one JSON string per
- * element. Retry control events are ignored without interrupting the stream.
+ * decoder, optionally filters named events, and drops empty events. `[DONE]`
+ * is dropped by default or retained for protocols that use it as their stream
+ * boundary. Retry control events are ignored without interrupting the stream.
  * Decoder failures become provider output errors so the public error channel
  * stays `AIError`.
  */
 export const sseFraming = (
   bytes: Stream.Stream<Uint8Array, AIError>,
   events?: ReadonlySet<string>,
+  includeDone = false,
 ): Stream.Stream<string, AIError> =>
   bytes.pipe(
     Stream.decodeText(),
@@ -240,7 +241,7 @@ export const sseFraming = (
       (event) =>
         (events === undefined || events.has(event.event)) &&
         event.data.length > 0 &&
-        (event.data !== "[DONE]" || (events !== undefined && event.event !== "message")),
+        (event.data !== "[DONE]" || includeDone || (events !== undefined && event.event !== "message")),
     ),
     Stream.map((event) => event.data),
   )

packages/ai/src/protocols/utils/lifecycle.ts

@@ -62,22 +62,31 @@ export const reasoningEnd = (
   events: LLMEvent[],
   id: string,
   providerMetadata?: ProviderMetadata,
+  /** Authoritative complete value; replaces accumulated deltas when present. */
+  text?: string,
 ): State => {
   if (!state.reasoning.has(id)) return state
   const stepped = stepStart(state, events)
-  events.push(LLMEvent.reasoningEnd({ id, providerMetadata }))
+  events.push(LLMEvent.reasoningEnd({ id, text, providerMetadata }))
   const reasoning = new Set(stepped.reasoning)
   reasoning.delete(id)
   return { ...stepped, reasoning }
 }
 
-export const textEnd = (state: State, events: LLMEvent[], id: string, providerMetadata?: ProviderMetadata): State => {
+export const textEnd = (
+  state: State,
+  events: LLMEvent[],
+  id: string,
+  providerMetadata?: ProviderMetadata,
+  /** Authoritative complete value; replaces accumulated deltas when present. */
+  text?: string,
+): State => {
   if (!state.text.has(id)) return state
   const stepped = stepStart(state, events)
-  events.push(LLMEvent.textEnd({ id, providerMetadata }))
-  const text = new Set(stepped.text)
-  text.delete(id)
-  return { ...stepped, text }
+  events.push(LLMEvent.textEnd({ id, text, providerMetadata }))
+  const open = new Set(stepped.text)
+  open.delete(id)
+  return { ...stepped, text: open }
 }
 
 const closeOpenBlocks = (state: State, events: LLMEvent[]): State => {

packages/ai/src/provider-error.ts

@@ -37,6 +37,7 @@ const patterns = [
   /too large for model with \d+ maximum context length/i,
   /prompt has [\d,]+ tokens?, but the configured context size is [\d,]+ tokens?/i,
   /model_context_window_exceeded/i,
+  /range of input length should be/i,
   /too many tokens/i,
   /token limit exceeded/i,
   /request_too_large/i,
@@ -59,6 +60,7 @@ export const isContextOverflowFailure = (failure: unknown) =>
 
 const decodeJson = Schema.decodeUnknownOption(Schema.fromJsonString(Schema.Unknown))
 const QUOTA_CODES = new Set(["insufficient_quota", "usage_not_included", "billing_error"])
+const AUTH_CODES = new Set(["authentication_error", "permission_error"])
 const SERVER_CODES = new Set([
   "api_error",
   "internal_error",
@@ -74,7 +76,6 @@ const INVALID_REQUEST_CODES = new Set(["invalid_prompt", "invalid_request_error"
 const RATE_LIMIT_TEXT = /rate increased too quickly|rate[-_\s]?limit|too[_\s]?many[_\s]?requests/i
 const QUOTA_TEXT = /insufficient[-_\s]?quota|quota[-_\s]?exceeded/i
 const CONTENT_POLICY_TEXT = /content[-_\s]?policy|content_filter|safety/i
-const NETWORK_ERROR_TEXT = /network[-_\s]error/i
 
 export interface ProviderFailure {
   readonly message: string
@@ -90,8 +91,12 @@ export interface ProviderFailure {
   readonly rateLimit?: HttpRateLimitDetails | undefined
 }
 
-// Keep HTTP failures and provider-reported stream failures on one typed path so
-// session retry policy never needs provider-specific string matching.
+// Classification records affirmative evidence about a failure. Deterministic
+// failures need positive identification (a 4xx status, quota/auth/policy
+// signals); anything unrecognized stays UnknownProvider, which the session
+// retry policy treats as retry-eligible because transient failures arrive in
+// unpredictable shapes while deterministic rejections almost always carry a
+// status or known code.
 export function classifyProviderFailure(input: ProviderFailure): AIError["reason"] {
   const details = { message: input.message, body: input.rawBody, http: input.http, cause: input.cause }
   const body = input.rawBody ?? ""
@@ -116,46 +121,33 @@ export function classifyProviderFailure(input: ProviderFailure): AIError["reason
   if (CONTENT_POLICY_TEXT.test(text)) return new ContentPolicyError(details)
   if (codes.some((code) => QUOTA_CODES.has(code)) || (input.status === 429 && QUOTA_TEXT.test(text)))
     return new QuotaExceededError(details)
-  if (input.status === 401) return new AuthenticationError({ ...details, kind: "invalid" })
-  if (input.status === 403) return new AuthenticationError({ ...details, kind: "insufficient-permissions" })
-  if (codes.includes("authentication_error")) return new AuthenticationError({ ...details, kind: "invalid" })
-  if (codes.includes("permission_error"))
-    return new AuthenticationError({ ...details, kind: "insufficient-permissions" })
+  if (input.status === 401 || input.status === 403 || codes.some((code) => AUTH_CODES.has(code)))
+    return new AuthenticationError(details)
   if (
-    codes.some((code) => code.includes("rate_limit") || code === "too_many_requests" || code === "throttlingexception")
+    input.status === 429 ||
+    codes.some(
+      (code) => code.includes("rate_limit") || code === "too_many_requests" || code === "throttlingexception",
+    ) ||
+    RATE_LIMIT_TEXT.test(text)
   )
     return new RateLimitError({
       ...details,
       retryAfterMs: input.retryAfterMs,
       rateLimit: input.rateLimit,
     })
-  if (RATE_LIMIT_TEXT.test(text))
-    return new RateLimitError({
-      ...details,
-      retryAfterMs: input.retryAfterMs,
-      rateLimit: input.rateLimit,
-    })
-  if (NETWORK_ERROR_TEXT.test(text)) return new ProviderInternalError(details)
-  if (codes.some((code) => SERVER_CODES.has(code) || code.includes("exhausted") || code.includes("unavailable")))
-    return new ProviderInternalError({
-      ...details,
-      retryAfterMs: input.retryAfterMs,
-    })
-  if (input.status === 429) {
-    return new RateLimitError({
-      ...details,
-      retryAfterMs: input.retryAfterMs,
-      rateLimit: input.rateLimit,
-    })
-  }
-  if (input.status === 408 || input.status === 409 || (input.status !== undefined && input.status >= 500))
+  if (
+    input.status === 408 ||
+    input.status === 409 ||
+    (input.status !== undefined && input.status >= 500) ||
+    codes.some((code) => SERVER_CODES.has(code) || code.includes("exhausted") || code.includes("unavailable"))
+  )
     return new ProviderInternalError({
       ...details,
       retryAfterMs: input.retryAfterMs,
     })
   if (codes.some((code) => INVALID_REQUEST_CODES.has(code))) return new InvalidRequestError(details)
-  if (input.status === 400 || input.status === 404 || input.status === 413 || input.status === 422)
-    return new InvalidRequestError(details)
+  // Any remaining 4xx is a deterministic rejection of this request.
+  if (input.status !== undefined && input.status >= 400 && input.status < 500) return new InvalidRequestError(details)
   return new UnknownProviderError(details)
 }
 

packages/ai/src/providers/groq.ts

@@ -5,7 +5,6 @@ import { ProviderShared } from "../protocols/shared.js"
 import { AuthOptions, type ProviderAuthOption } from "../route/auth-options.js"
 import { Route, type RouteDefaultsInput } from "../route/client.js"
 import { Endpoint } from "../route/endpoint.js"
-import { Framing } from "../route/framing.js"
 import { Protocol } from "../route/protocol.js"
 import { ProviderID, type ModelID, type LLMRequest } from "../schema/index.js"
 import { profiles } from "./openai-compatible-profile.js"
@@ -75,7 +74,7 @@ export const route = Route.make({
   providerMetadataKey: "openai",
   protocol,
   endpoint: Endpoint.path("/chat/completions", { baseURL: profiles.groq.baseURL }),
-  framing: Framing.sse,
+  framing: OpenAIChat.framing,
 })
 
 export const configure = (input: LanguageModelOptions = {}) => {

packages/ai/src/providers/openrouter.ts

@@ -1,7 +1,6 @@
 import { Effect, Schema } from "effect"
 import { Route, type RouteDefaultsInput } from "../route/client.js"
 import { Endpoint } from "../route/endpoint.js"
-import { Framing } from "../route/framing.js"
 import { Protocol } from "../route/protocol.js"
 import { AuthOptions, type ProviderAuthOption } from "../route/auth-options.js"
 import { ProviderID, type CacheHint, type ModelID } from "../schema/index.js"
@@ -167,7 +166,7 @@ export const route = Route.make({
   providerMetadataKey: "openrouter",
   protocol,
   endpoint: Endpoint.path("/chat/completions", { baseURL: profile.baseURL }),
-  framing: Framing.sse,
+  framing: OpenAIChat.framing,
 })
 
 export const routes = [route]

packages/ai/src/route/auth.ts

@@ -139,7 +139,7 @@ const toAIError = (error: AuthError): AIError => {
     return new AIError({
       reason:
         error instanceof MissingCredentialError
-          ? new AuthenticationError({ message: error.message, cause: error, kind: "missing" })
+          ? new AuthenticationError({ message: error.message, cause: error })
           : new InvalidRequestError({ message: `Failed to resolve auth config: ${error.message}`, cause: error }),
     })
   }

packages/ai/src/route/framing.ts

@@ -8,8 +8,8 @@ import type { AIError } from "../schema/index.js"
  * `Framing` is the byte-stream-shaped seam between transport and protocol:
  *
  * - SSE (`Framing.sse`) — UTF-8 decode the body, run the SSE channel decoder,
- *   drop empty / `[DONE]` keep-alives. Each emitted frame is the JSON `data:`
- *   payload of one event.
+ *   and emit the `data:` payload of each non-empty event. The default drops
+ *   `[DONE]`; protocols that use it as a terminal select `sseWithDone`.
  * - AWS event stream — length-prefixed binary frames with CRC checksums.
  *   Each emitted frame is one parsed binary event record.
  *
@@ -26,6 +26,12 @@ export interface Definition<Frame> {
 /** Server-Sent Events framing. Used by every JSON-streaming HTTP provider. */
 export const sse: Definition<string> = { id: "sse", frame: ProviderShared.sseFraming }
 
+/** Server-Sent Events framing that retains the conventional `[DONE]` sentinel. */
+export const sseWithDone: Definition<string> = {
+  id: "sse",
+  frame: (bytes) => ProviderShared.sseFraming(bytes, undefined, true),
+}
+
 /** SSE framing restricted to protocol-recognized event names. */
 export const sseEvents = (events: ReadonlySet<string>): Definition<string> => ({
   id: "sse",

packages/ai/src/schema/errors.ts

@@ -44,10 +44,7 @@ export class NoRouteError extends Schema.TaggedError<NoRouteError>("AI.Error.NoR
 
 export class AuthenticationError extends Schema.TaggedError<AuthenticationError>("AI.Error.Authentication")(
   "Authentication",
-  {
-    ...ReasonFields,
-    kind: Schema.Literals(["missing", "invalid", "expired", "insufficient-permissions", "unknown"]),
-  },
+  ReasonFields,
 ) {}
 
 export class RateLimitError extends Schema.TaggedError<RateLimitError>("AI.Error.RateLimit")("RateLimit", {

packages/ai/src/schema/events.ts

@@ -112,6 +112,8 @@ export type TextDelta = Schema.Schema.Type<typeof TextDelta>
 export const TextEnd = Schema.Struct({
   type: Schema.tag("text-end"),
   id: ContentBlockID,
+  /** Authoritative complete value; replaces accumulated deltas when present. */
+  text: Schema.optional(Schema.String),
   providerMetadata: Schema.optional(ProviderMetadata),
 }).annotate({ identifier: "LLM.Event.TextEnd" })
 export type TextEnd = Schema.Schema.Type<typeof TextEnd>
@@ -134,6 +136,8 @@ export type ReasoningDelta = Schema.Schema.Type<typeof ReasoningDelta>
 export const ReasoningEnd = Schema.Struct({
   type: Schema.tag("reasoning-end"),
   id: ContentBlockID,
+  /** Authoritative complete value; replaces accumulated deltas when present. */
+  text: Schema.optional(Schema.String),
   providerMetadata: Schema.optional(ProviderMetadata),
 }).annotate({ identifier: "LLM.Event.ReasoningEnd" })
 export type ReasoningEnd = Schema.Schema.Type<typeof ReasoningEnd>
@@ -328,17 +332,32 @@ export const LLMEvent = Object.assign(llmEventTagged, {
 })
 export type LLMEvent = Schema.Schema.Type<typeof llmEventTagged>
 
+/** Joins deltas per fragment, letting an authoritative end value replace that fragment's accumulated deltas. */
+const joinFragments = <Delta extends { id: string; text: string }, End extends { id: string; text?: string }>(
+  events: ReadonlyArray<LLMEvent>,
+  isDelta: (event: LLMEvent) => event is Extract<LLMEvent, Delta>,
+  isEnd: (event: LLMEvent) => event is Extract<LLMEvent, End>,
+) => {
+  const order: string[] = []
+  const parts = new Map<string, string>()
+  for (const event of events) {
+    if (isDelta(event)) {
+      if (!parts.has(event.id)) order.push(event.id)
+      parts.set(event.id, (parts.get(event.id) ?? "") + event.text)
+    }
+    if (isEnd(event) && event.text !== undefined) {
+      if (!parts.has(event.id)) order.push(event.id)
+      parts.set(event.id, event.text)
+    }
+  }
+  return order.map((id) => parts.get(id)).join("")
+}
+
 const responseText = (events: ReadonlyArray<LLMEvent>) =>
-  events
-    .filter(LLMEvent.is.textDelta)
-    .map((event) => event.text)
-    .join("")
+  joinFragments(events, LLMEvent.is.textDelta, LLMEvent.is.textEnd)
 
 const responseReasoning = (events: ReadonlyArray<LLMEvent>) =>
-  events
-    .filter(LLMEvent.is.reasoningDelta)
-    .map((event) => event.text)
-    .join("")
+  joinFragments(events, LLMEvent.is.reasoningDelta, LLMEvent.is.reasoningEnd)
 
 const responseUsage = (events: ReadonlyArray<LLMEvent>) =>
   events.reduce<Usage | undefined>(
@@ -445,10 +464,11 @@ const reduceTextDelta = (state: ResponseState, event: TextDelta): ResponseState
 const reduceTextEnd = (state: ResponseState, event: TextEnd): ResponseState => {
   const current = state.textParts[event.id]
   if (!current) return state
+  const text = event.text ?? current.text
   const providerMetadata = event.providerMetadata ?? current.providerMetadata
   return {
-    ...replaceContent(state, current.contentIndex, textContent(current.text, providerMetadata)),
-    textParts: { ...state.textParts, [event.id]: { ...current, providerMetadata } },
+    ...replaceContent(state, current.contentIndex, textContent(text, providerMetadata)),
+    textParts: { ...state.textParts, [event.id]: { ...current, text, providerMetadata } },
   }
 }
 
@@ -478,10 +498,11 @@ const reduceReasoningDelta = (state: ResponseState, event: ReasoningDelta): Resp
 const reduceReasoningEnd = (state: ResponseState, event: ReasoningEnd): ResponseState => {
   const current = state.reasoningParts[event.id]
   if (!current) return state
+  const text = event.text ?? current.text
   const providerMetadata = event.providerMetadata ?? current.providerMetadata
   return {
-    ...replaceContent(state, current.contentIndex, reasoningContent(current.text, providerMetadata)),
-    reasoningParts: { ...state.reasoningParts, [event.id]: { ...current, providerMetadata } },
+    ...replaceContent(state, current.contentIndex, reasoningContent(text, providerMetadata)),
+    reasoningParts: { ...state.reasoningParts, [event.id]: { ...current, text, providerMetadata } },
   }
 }
 
@@ -579,12 +600,12 @@ export class LLMResponse extends Schema.Class<LLMResponse>("LLM.Response")({
   usage: Schema.optional(Usage),
   finishReason: FinishReasonDetails,
 }) {
-  /** Concatenated assistant text assembled from streamed `text-delta` events. */
+  /** Concatenated assistant text; each fragment's `text-end` value replaces its accumulated deltas when present. */
   get text() {
     return responseText(this.events)
   }
 
-  /** Concatenated reasoning text assembled from streamed `reasoning-delta` events. */
+  /** Concatenated reasoning text; each fragment's `reasoning-end` value replaces its accumulated deltas when present. */
   get reasoning() {
     return responseReasoning(this.events)
   }

packages/ai/src/testing.ts

@@ -1,6 +1,6 @@
 export * as TestLLM from "./testing.js"
 
-import { LLMClient, type Interface as LLMClientShape } from "./route/client.js"
+import { LLMClient } from "./route/client.js"
 import {
   LLMEvent,
   LLMResponse,
@@ -16,13 +16,33 @@ export type Response = readonly LLMEvent[] | Stream.Stream<LLMEvent, AIError>
 
 export type Gate = Readonly<{ started: Effect.Effect<void>; release: Effect.Effect<void> }>
 
+type ClientInterface = Context.Service.Shape<typeof LLMClient.Service>
+
+export type Responder = (request: LLMRequest) => Response
+
+export interface TestInterface extends ClientInterface {
+  /** Returns a snapshot of requests observed at execution time. */
+  readonly requests: () => Effect.Effect<readonly LLMRequest[]>
+  readonly push: (...responses: readonly Response[]) => Effect.Effect<void>
+  /** Replaces the fallback without changing queued responses. */
+  readonly always: (response: Response) => Effect.Effect<void>
+  /** Answers requests after the one-shot queue is exhausted; receives the original request. */
+  readonly serve: (responder: Responder) => Effect.Effect<void>
+  /** Waits for request arrivals, not output or completion. */
+  readonly wait: (count: number) => Effect.Effect<void>
+  readonly gate: () => Effect.Effect<Gate, never, Scope.Scope>
+}
+
+export class Test extends Context.Service<Test, TestInterface>()("@opencode/ai/TestLLM/Test") {}
+
+/** @deprecated Use TestInterface through Test and testLayer. */
 export interface Interface {
   readonly requests: LLMRequest[]
   readonly push: (...responses: readonly Response[]) => Effect.Effect<void>
   readonly always: (response: Response) => Effect.Effect<void>
   readonly wait: (count: number) => Effect.Effect<void>
   readonly gate: Effect.Effect<Gate, never, Scope.Scope>
-  readonly client: LLMClientShape
+  readonly client: ClientInterface
 }
 
 export interface LayerOptions {
@@ -31,6 +51,7 @@ export interface LayerOptions {
   readonly fallback?: Response
 }
 
+/** @deprecated Use Test and testLayer for normal client methods and test controls. */
 export class Service extends Context.Service<Service, Interface>()("@opencode/ai/TestLLM") {}
 
 export const complete = (
@@ -80,59 +101,64 @@ export const hangAfter = (...events: readonly LLMEvent[]) => Stream.concat(Strea
 
 const toStream = (response: Response) => (Stream.isStream(response) ? response : Stream.fromIterable(response))
 
-export const layer = (options: LayerOptions = {}) =>
-  Layer.effect(
-    Service,
-    Effect.gen(function* () {
-      const requests: LLMRequest[] = []
-      const responses: Response[] = []
-      let started = Deferred.makeUnsafe<void>()
-      let fallback = options.fallback
-      let activeGate: { readonly started: Queue.Queue<void>; readonly release: Latch.Latch } | undefined
-      const wait = (count: number): Effect.Effect<void> =>
-        Effect.suspend(() =>
-          requests.length >= count ? Effect.void : Deferred.await(started).pipe(Effect.andThen(wait(count))),
-        )
+const make = (options: LayerOptions) =>
+  Effect.sync(() => {
+    const requests: LLMRequest[] = []
+    const responses: Response[] = []
+    let started = Deferred.makeUnsafe<void>()
+    let fallback: Response | Responder | undefined = options.fallback
+    let activeGate: { readonly started: Queue.Queue<void>; readonly release: Latch.Latch } | undefined
+    const wait = (count: number): Effect.Effect<void> =>
+      Effect.suspend(() =>
+        requests.length >= count ? Effect.void : Deferred.await(started).pipe(Effect.andThen(wait(count))),
+      )
 
-      const stream = ((request: LLMRequest) => {
-        requests.push(options.transformRequest?.(request) ?? request)
+    const stream: ClientInterface["stream"] = (request) =>
+      Stream.suspend(() => {
+        const count = requests.push(options.transformRequest?.(request) ?? request)
         const waiting = started
         started = Deferred.makeUnsafe()
-        Deferred.doneUnsafe(waiting, Effect.void)
-        const response = responses.shift() ?? fallback
-        if (!response) return Stream.die(new Error(`TestLLM has no response for request ${requests.length}`))
-        const streamed = toStream(response)
         const gate = activeGate
-        if (!gate) return streamed
-        return Stream.unwrap(
-          Queue.offer(gate.started, undefined).pipe(Effect.andThen(gate.release.await), Effect.as(streamed)),
-        )
-      }) as LLMClientShape["stream"]
-      const client = LLMClient.Service.of({
-        stream,
-        generate: (request) =>
-          stream(request).pipe(
-            Stream.runFold(LLMResponse.empty, LLMResponse.reduce),
-            Effect.flatMap((state) => {
-              const response = LLMResponse.complete(state)
-              if (response) return Effect.succeed(response)
-              return Effect.die("TestLLM response ended without a terminal finish event")
-            }),
-          ),
+        try {
+          const response = responses.shift() ?? (typeof fallback === "function" ? fallback(request) : fallback)
+          if (!response) return Stream.die(new Error(`TestLLM has no response for request ${count}`))
+          const streamed = toStream(response)
+          if (!gate) return streamed
+          return Stream.unwrap(
+            Queue.offer(gate.started, undefined).pipe(Effect.andThen(gate.release.await), Effect.as(streamed)),
+          )
+        } finally {
+          // Waiters can resume synchronously; assign the reply and gate before notifying them.
+          Deferred.doneUnsafe(waiting, Effect.void)
+        }
       })
-
-      return Service.of({
-        requests,
-        push: (...input) =>
-          Effect.sync(() => {
-            responses.push(...input)
+    const test = Test.of({
+      stream,
+      generate: (request) =>
+        stream(request).pipe(
+          Stream.runFold(LLMResponse.empty, LLMResponse.reduce),
+          Effect.flatMap((state) => {
+            const response = LLMResponse.complete(state)
+            if (response) return Effect.succeed(response)
+            return Effect.die("TestLLM response ended without a terminal finish event")
           }),
-        always: (response) =>
-          Effect.sync(() => {
-            fallback = response
-          }),
-        wait,
-        gate: Effect.gen(function* () {
+        ),
+      requests: () => Effect.sync(() => [...requests]),
+      push: (...input) =>
+        Effect.sync(() => {
+          responses.push(...input)
+        }),
+      always: (response) =>
+        Effect.sync(() => {
+          fallback = response
+        }),
+      serve: (responder) =>
+        Effect.sync(() => {
+          fallback = responder
+        }),
+      wait,
+      gate: () =>
+        Effect.gen(function* () {
           const gate = {
             started: yield* Effect.acquireRelease(Queue.unbounded<void>(), Queue.shutdown),
             release: yield* Latch.make(),
@@ -147,11 +173,36 @@ export const layer = (options: LayerOptions = {}) =>
             release,
           }
         }),
-        client,
-      })
-    }),
+    })
+
+    return { test, requests }
+  })
+
+/** Provides one shared implementation under the normal client and test-control tags. */
+export const testLayer = (options: LayerOptions = {}) =>
+  Layer.effectContext(
+    Effect.map(make(options), (implementation) =>
+      Context.make(LLMClient.Service, implementation.test).pipe(Context.add(Test, implementation.test)),
+    ),
   )
 
+/** @deprecated Use testLayer; retained for published callers of the legacy control interface. */
+export const layer = (options: LayerOptions = {}) =>
+  Layer.effect(
+    Service,
+    Effect.map(make(options), (implementation) =>
+      Service.of({
+        requests: implementation.requests,
+        push: implementation.test.push,
+        always: implementation.test.always,
+        wait: implementation.test.wait,
+        gate: implementation.test.gate(),
+        client: implementation.test,
+      }),
+    ),
+  )
+
+/** @deprecated testLayer provides LLMClient.Service directly. */
 export const clientLayer = Layer.effect(
   LLMClient.Service,
   Effect.map(Service, (service) => service.client),

packages/ai/test/executor.test.ts

@@ -574,6 +574,7 @@ describe("WebSocket channel execution", () => {
   const model = configure({ baseURL: "https://api.openai.test/v1/", apiKey: "test" }).responses("gpt-4.1-mini")
   const request = LLM.request({ model, prompt: "Say hello." })
   const frames = [
+    JSON.stringify({ type: "response.output_item.added", item: { type: "message", id: "msg_1" } }),
     JSON.stringify({ type: "response.output_text.delta", item_id: "msg_1", delta: "Hi" }),
     JSON.stringify({ type: "response.completed", response: { id: "resp_1" } }),
   ]

packages/ai/test/exports.test.ts

@@ -32,6 +32,8 @@ describe("public exports", () => {
     expect(Provider.make).toBeFunction()
     expect(ProviderSubpath.make).toBe(Provider.make)
     expect(TestLLM.layer).toBeFunction()
+    expect(TestLLM.testLayer).toBeFunction()
+    expect(TestLLM.Test.of).toBeFunction()
   })
 
   test("route barrel exposes route-authoring APIs", () => {

packages/ai/test/fixtures/recordings/anthropic-messages-cache/keeps-a-long-tool-turn-inside-the-cache-lookback.json

@@ -10,7 +10,7 @@
       "transport": "http",
       "request": {
         "method": "POST",
-        "url": "https://api.anthropic.com/v1/messages",
+        "url": "https://api.anthropic.com/v1/messages?beta=true",
         "headers": {
           "anthropic-version": "2023-06-01",
           "content-type": "application/json"
@@ -29,7 +29,7 @@
       "transport": "http",
       "request": {
         "method": "POST",
-        "url": "https://api.anthropic.com/v1/messages",
+        "url": "https://api.anthropic.com/v1/messages?beta=true",
         "headers": {
           "anthropic-version": "2023-06-01",
           "content-type": "application/json"

packages/ai/test/fixtures/recordings/anthropic-messages-cache/writes-then-reads-cache-control-on-identical-second-call.json

@@ -10,7 +10,7 @@
       "transport": "http",
       "request": {
         "method": "POST",
-        "url": "https://api.anthropic.com/v1/messages",
+        "url": "https://api.anthropic.com/v1/messages?beta=true",
         "headers": {
           "anthropic-version": "2023-06-01",
           "content-type": "application/json"
@@ -29,7 +29,7 @@
       "transport": "http",
       "request": {
         "method": "POST",
-        "url": "https://api.anthropic.com/v1/messages",
+        "url": "https://api.anthropic.com/v1/messages?beta=true",
         "headers": {
           "anthropic-version": "2023-06-01",
           "content-type": "application/json"

packages/ai/test/fixtures/recordings/anthropic-messages/anthropic-opus-4-7-image-tool-result.json

@@ -24,7 +24,7 @@
       "transport": "http",
       "request": {
         "method": "POST",
-        "url": "https://api.anthropic.com/v1/messages",
+        "url": "https://api.anthropic.com/v1/messages?beta=true",
         "headers": {
           "anthropic-version": "2023-06-01",
           "content-type": "application/json"

packages/ai/test/fixtures/recordings/openrouter-reasoning-tool-loop.json

@@ -23,7 +23,7 @@
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"anthropic/claude-sonnet-4.6\",\"messages\":[{\"role\":\"system\",\"content\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\"},{\"role\":\"user\",\"content\":\"What is the weather in Paris?\"}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false}}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"max_tokens\":1536,\"reasoning\":{\"max_tokens\":1024}}"
+        "body": "{\"model\":\"anthropic/claude-sonnet-4.6\",\"messages\":[{\"role\":\"system\",\"content\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\"},{\"role\":\"user\",\"content\":\"What is the weather in Paris?\"}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false},\"strict\":false}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"reasoning\":{\"max_tokens\":1024},\"max_completion_tokens\":1536,\"store\":false,\"usage\":{\"include\":true}}"
       },
       "response": {
         "status": 200,
@@ -41,7 +41,7 @@
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"anthropic/claude-sonnet-4.6\",\"messages\":[{\"role\":\"system\",\"content\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\"},{\"role\":\"user\",\"content\":\"What is the weather in Paris?\"},{\"role\":\"assistant\",\"content\":\"Sure! Let me check the weather in Paris for you right now!\",\"tool_calls\":[{\"id\":\"toolu_01PaChhcyw3yu2P2bDS2bgAA\",\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"arguments\":\"{\\\"city\\\":\\\"Paris\\\"}\"}}],\"reasoning\":\"The user wants to know the weather in Paris. I'll use the get_weather tool.\",\"reasoning_details\":[{\"type\":\"reasoning.text\",\"text\":\"The user wants to know the weather in Paris. I'll use the get_weather tool.\",\"format\":\"anthropic-claude-v1\",\"index\":0,\"signature\":\"ErkCCosBCA8YAipAjKnRKpxkZ4eHrMPJ63IWEOYPSzb+XSHyG+vLK+2ks2O9T4N9M37Xn2kausQSH1rfsrdmKxgUlBg6yUFRgMVR7DIRY2xhdWRlLXNvbm5ldC00LTY4AEIIdGhpbmtpbmdaJDRjMGYwNDZmLTI1ZmQtNDVmYi1iZmIzLWEwOGE4ZTI0OWNhNxIMNFb5O6pb4nX0HojdGgyL5h+CAIpsxpdM1QgiMGm/i3ST6F5mAhxB+Uez0Cm95ra9yvQkrzHaA/AmWoXpdmPlczSn1S1RDk2IqeA57Spbf7JT44jygtLQt6yZmGzoTBHn3VkwaNZsuuAtbdo4B5QJXooa/AoKKs54QZ2kfS640vsv5flQVCg7CoQCFuLKjIeLMO7MnxVyuskXJr1DgesTa7I0ScF53U9JGhgB\"}]},{\"role\":\"tool\",\"tool_call_id\":\"toolu_01PaChhcyw3yu2P2bDS2bgAA\",\"content\":\"{\\\"temperature\\\":22,\\\"condition\\\":\\\"sunny\\\"}\"}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false}}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"max_tokens\":1536,\"reasoning\":{\"max_tokens\":1024}}"
+        "body": "{\"model\":\"anthropic/claude-sonnet-4.6\",\"messages\":[{\"role\":\"system\",\"content\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\"},{\"role\":\"user\",\"content\":\"What is the weather in Paris?\"},{\"role\":\"assistant\",\"content\":\"Sure! Let me check the weather in Paris for you right now!\",\"tool_calls\":[{\"id\":\"toolu_01PaChhcyw3yu2P2bDS2bgAA\",\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"arguments\":\"{\\\"city\\\":\\\"Paris\\\"}\"}}],\"reasoning\":\"The user wants to know the weather in Paris. I'll use the get_weather tool.\",\"reasoning_details\":[{\"type\":\"reasoning.text\",\"text\":\"The user wants to know the weather in Paris. I'll use the get_weather tool.\",\"format\":\"anthropic-claude-v1\",\"index\":0,\"signature\":\"ErkCCosBCA8YAipAjKnRKpxkZ4eHrMPJ63IWEOYPSzb+XSHyG+vLK+2ks2O9T4N9M37Xn2kausQSH1rfsrdmKxgUlBg6yUFRgMVR7DIRY2xhdWRlLXNvbm5ldC00LTY4AEIIdGhpbmtpbmdaJDRjMGYwNDZmLTI1ZmQtNDVmYi1iZmIzLWEwOGE4ZTI0OWNhNxIMNFb5O6pb4nX0HojdGgyL5h+CAIpsxpdM1QgiMGm/i3ST6F5mAhxB+Uez0Cm95ra9yvQkrzHaA/AmWoXpdmPlczSn1S1RDk2IqeA57Spbf7JT44jygtLQt6yZmGzoTBHn3VkwaNZsuuAtbdo4B5QJXooa/AoKKs54QZ2kfS640vsv5flQVCg7CoQCFuLKjIeLMO7MnxVyuskXJr1DgesTa7I0ScF53U9JGhgB\"}]},{\"role\":\"tool\",\"tool_call_id\":\"toolu_01PaChhcyw3yu2P2bDS2bgAA\",\"content\":\"{\\\"temperature\\\":22,\\\"condition\\\":\\\"sunny\\\"}\"}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false},\"strict\":false}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"reasoning\":{\"max_tokens\":1024},\"max_completion_tokens\":1536,\"store\":false,\"usage\":{\"include\":true}}"
       },
       "response": {
         "status": 200,

packages/ai/test/fixtures/recordings/openrouter-reasoning.json

@@ -15,7 +15,7 @@
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"anthropic/claude-sonnet-4.6\",\"messages\":[{\"role\":\"system\",\"content\":\"Think through the arithmetic, then reply with only the final integer.\"},{\"role\":\"user\",\"content\":\"What is 173 multiplied by 219?\"}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"max_tokens\":1536,\"temperature\":0,\"reasoning\":{\"max_tokens\":1024}}"
+        "body": "{\"model\":\"anthropic/claude-sonnet-4.6\",\"messages\":[{\"role\":\"system\",\"content\":\"Think through the arithmetic, then reply with only the final integer.\"},{\"role\":\"user\",\"content\":\"What is 173 multiplied by 219?\"}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"temperature\":0,\"reasoning\":{\"max_tokens\":1024},\"max_completion_tokens\":1536,\"store\":false,\"usage\":{\"include\":true}}"
       },
       "response": {
         "status": 200,

packages/ai/test/fixtures/recordings/pdf/anthropic-tool-result.json

@@ -10,11 +10,11 @@
       "transport": "http",
       "request": {
         "method": "POST",
-        "url": "https://api.anthropic.com/v1/messages",
+        "url": "https://api.anthropic.com/v1/messages?beta=true",
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"claude-haiku-4-5-20251001\",\"system\":[{\"type\":\"text\",\"text\":\"Read the PDF returned by the tool and follow the user's response format exactly.\"}],\"messages\":[{\"role\":\"user\",\"content\":[{\"type\":\"text\",\"text\":\"Return only the verification code from the PDF.\"}]},{\"role\":\"assistant\",\"content\":[{\"type\":\"tool_use\",\"id\":\"call_pdf_1\",\"name\":\"read_pdf\",\"input\":{}}]},{\"role\":\"user\",\"content\":[{\"type\":\"tool_result\",\"tool_use_id\":\"call_pdf_1\",\"content\":[{\"type\":\"text\",\"text\":\"PDF read successfully\"},{\"type\":\"document\",\"source\":{\"type\":\"base64\",\"media_type\":\"application/pdf\",\"data\":\"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\"}}]}]}],\"tools\":[{\"name\":\"read_pdf\",\"description\":\"Read the attached PDF.\",\"input_schema\":{\"type\":\"object\",\"properties\":{},\"additionalProperties\":false}}],\"stream\":true,\"max_tokens\":40,\"temperature\":0}"
+        "body": "{\"model\":\"claude-haiku-4-5-20251001\",\"system\":[{\"type\":\"text\",\"text\":\"Read the PDF returned by the tool and follow the user's response format exactly.\"}],\"messages\":[{\"role\":\"user\",\"content\":[{\"type\":\"text\",\"text\":\"Return only the verification code from the PDF.\"}]},{\"role\":\"assistant\",\"content\":[{\"type\":\"tool_use\",\"id\":\"call_pdf_1\",\"name\":\"read_pdf\",\"input\":{}}]},{\"role\":\"user\",\"content\":[{\"type\":\"tool_result\",\"tool_use_id\":\"call_pdf_1\",\"content\":[{\"type\":\"text\",\"text\":\"PDF read successfully\"},{\"type\":\"document\",\"source\":{\"type\":\"base64\",\"media_type\":\"application/pdf\",\"data\":\"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\"},\"title\":\"verification.pdf\"}]}]}],\"tools\":[{\"name\":\"read_pdf\",\"description\":\"Read the attached PDF.\",\"input_schema\":{\"type\":\"object\",\"properties\":{},\"additionalProperties\":false}}],\"stream\":true,\"max_tokens\":40,\"temperature\":0}"
       },
       "response": {
         "status": 200,

packages/ai/test/fixtures/recordings/pdf/anthropic-user-input.json

@@ -10,11 +10,11 @@
       "transport": "http",
       "request": {
         "method": "POST",
-        "url": "https://api.anthropic.com/v1/messages",
+        "url": "https://api.anthropic.com/v1/messages?beta=true",
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"claude-haiku-4-5-20251001\",\"messages\":[{\"role\":\"user\",\"content\":[{\"type\":\"document\",\"source\":{\"type\":\"base64\",\"media_type\":\"application/pdf\",\"data\":\"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\"}},{\"type\":\"text\",\"text\":\"Return only the verification code from the PDF.\"}]}],\"stream\":true,\"max_tokens\":40,\"temperature\":0}"
+        "body": "{\"model\":\"claude-haiku-4-5-20251001\",\"messages\":[{\"role\":\"user\",\"content\":[{\"type\":\"document\",\"source\":{\"type\":\"base64\",\"media_type\":\"application/pdf\",\"data\":\"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\"},\"title\":\"verification.pdf\"},{\"type\":\"text\",\"text\":\"Return only the verification code from the PDF.\"}]}],\"stream\":true,\"max_tokens\":40,\"temperature\":0}"
       },
       "response": {
         "status": 200,

packages/ai/test/provider-error.test.ts

@@ -11,6 +11,7 @@ describe("provider error classification", () => {
       "Input length 131393 exceeds the maximum allowed input length of 131040 tokens.",
       "The input (516368 tokens) is longer than the model's context length (262144 tokens).",
       "Prompt has 5,958,968 tokens, but the configured context size is 256,000 tokens",
+      "Range of input length should be [1, 129024]",
       "Too many tokens",
       "Token limit exceeded",
     ]
@@ -87,10 +88,12 @@ describe("provider error classification", () => {
     ])
   })
 
-  test("classifies network error text as provider internal", () => {
+  test("classifies any remaining 4xx status as an invalid request", () => {
     expect(
-      ["network error", "network-error", "network_error"].map((message) => classifyProviderFailure({ message })._tag),
-    ).toEqual(["ProviderInternal", "ProviderInternal", "ProviderInternal"])
+      [400, 402, 404, 418, 422, 451].map(
+        (status) => classifyProviderFailure({ message: `HTTP ${status}`, status })._tag,
+      ),
+    ).toEqual(Array(6).fill("InvalidRequest"))
   })
 
   test("classifies nested provider codes when a top-level code is also present", () => {
@@ -103,10 +106,12 @@ describe("provider error classification", () => {
     ).toEqual(["QuotaExceeded", "ProviderInternal", "InvalidRequest"])
   })
 
-  test("keeps unknown and malformed provider payloads non-retryable", () => {
+  test("leaves unrecognized failures unclassified for the retry default", () => {
     expect(classifyProviderFailure({ message: '{"error":{"message":"no_kv_space"}}' })._tag).toBe("UnknownProvider")
     expect(classifyProviderFailure({ message: '{"type":"error","error":{"code":123}}' })._tag).toBe("UnknownProvider")
     expect(classifyProviderFailure({ message: "not-json" })._tag).toBe("UnknownProvider")
+    expect(classifyProviderFailure({ message: "network error" })._tag).toBe("UnknownProvider")
+    expect(classifyProviderFailure({ message: "Provider returned error" })._tag).toBe("UnknownProvider")
   })
 })
 

packages/ai/test/provider-package.test.ts

@@ -1,5 +1,7 @@
 import { describe, expect, test } from "bun:test"
 import { model } from "@opencode-ai/ai/providers/openai"
+import { LLM } from "../src/index.js"
+import { Endpoint } from "../src/route/endpoint.js"
 
 describe("provider package entrypoints", () => {
   test("semantic API aliases expose the same contract", async () => {
@@ -36,7 +38,8 @@ describe("provider package entrypoints", () => {
     expect(modules[0].model).toBe(modules[1].model)
     expect(modules[8].model).toBe(modules[9].model)
     expect(modules[12].model).toBe(modules[13].model)
-    expect(modules[19].model).toBe(modules[20].model)
+    expect(modules[19].model).toBe(modules[21].model)
+    expect(modules[19].model).not.toBe(modules[20].model)
   })
 
   test("maps DeepInfra package settings onto its native executable model", async () => {
@@ -139,8 +142,10 @@ describe("provider package entrypoints", () => {
     expect(selected.route.id).toBe("anthropic-messages")
     expect(selected.route.endpoint).toMatchObject({
       baseURL: "https://messages.example.test/v1",
-      path: "/messages",
     })
+    expect(
+      Endpoint.render(selected.route.endpoint, { request: LLM.request({ model: selected }), body: {} }).toString(),
+    ).toBe("https://messages.example.test/v1/messages")
     expect(selected.route.defaults.headers).toEqual({ "x-application": "opencode" })
     expect(selected.route.defaults.http?.body).toEqual({ metadata: { user_id: "user_1" } })
     expect(selected.route.defaults.providerOptions).toEqual({ effort: "low" })

packages/ai/test/provider/bedrock-converse.test.ts

@@ -491,6 +491,59 @@ describe("Bedrock Converse route", () => {
     }),
   )
 
+  it.effect("ignores late tool deltas after contentBlockStop", () =>
+    Effect.gen(function* () {
+      const body = eventStreamBody(
+        [
+          "contentBlockStart",
+          {
+            contentBlockIndex: 0,
+            start: { toolUse: { toolUseId: "tool_1", name: "lookup" } },
+          },
+        ],
+        ["contentBlockDelta", { contentBlockIndex: 0, delta: { toolUse: { input: '{"query":"weather"}' } } }],
+        ["contentBlockStop", { contentBlockIndex: 0 }],
+        ["contentBlockDelta", { contentBlockIndex: 0, delta: { toolUse: { input: '{"late":true}' } } }],
+        ["messageStop", { stopReason: "tool_use" }],
+      )
+      const response = yield* LLMClient.generate(baseRequest).pipe(Effect.provide(fixedBytes(body)))
+
+      expect(response.toolCalls).toEqual([
+        { type: "tool-call", id: "tool_1", name: "lookup", input: { query: "weather" } },
+      ])
+      expect(response.events.filter((event) => event.type === "tool-input-delta")).toEqual([
+        {
+          type: "tool-input-delta",
+          id: "tool_1",
+          name: "lookup",
+          text: '{"query":"weather"}',
+          input: { query: "weather" },
+        },
+      ])
+    }),
+  )
+
+  it.effect("rejects tool deltas without contentBlockStart", () =>
+    Effect.gen(function* () {
+      const error = yield* LLMClient.generate(baseRequest).pipe(
+        Effect.provide(
+          fixedBytes(
+            eventStreamBody(
+              ["contentBlockDelta", { contentBlockIndex: 0, delta: { toolUse: { input: "{}" } } }],
+              ["messageStop", { stopReason: "tool_use" }],
+            ),
+          ),
+        ),
+        Effect.flip,
+      )
+
+      expect(error).toMatchObject({
+        reason: { _tag: "InvalidProviderOutput" },
+        message: "Bedrock Converse tool delta is missing its tool call",
+      })
+    }),
+  )
+
   it.effect("recovers incomplete tool input at finalization", () =>
     Effect.gen(function* () {
       const body = eventStreamBody(

packages/ai/test/provider/error-retention.test.ts

@@ -52,7 +52,7 @@ describe("provider error retention", () => {
           Effect.flip,
         )
         expect(error.message).toContain("Slow down")
-        expect(error.reason._tag).toBe(entry.name === "Gemini" ? "ProviderInternal" : "RateLimit")
+        expect(error.reason._tag).toBe("RateLimit")
         expect(error.reason.body).toBe(body)
         expect(error.reason.http).toMatchObject({ status: 200, headers: { "x-provider-trace": "trace-1" } })
         expect(error.reason.http?.url).toStartWith("https://provider.test/")

packages/ai/test/provider/open-responses-lifecycle.test.ts

@@ -0,0 +1,467 @@
+import { describe, expect } from "bun:test"
+import { Effect, Stream } from "effect"
+import { LLM, LLMEvent } from "../../src/index.js"
+import { OpenResponses } from "../../src/protocols/open-responses.js"
+import { configure } from "../../src/providers/openai-compatible-responses.js"
+import { LLMClient } from "../../src/route.js"
+import { it } from "../lib/effect.js"
+import { fixedResponse } from "../lib/http.js"
+import { sseEvents } from "../lib/sse.js"
+
+const request = LLM.request({
+  model: configure({ apiKey: "test-key", baseURL: "https://responses.example.test/v1" }).model("example-model"),
+  prompt: "Respond.",
+})
+const completed = { type: "response.completed", response: { id: "resp_1" } }
+
+const collect = (...input: OpenResponses.Event[]) =>
+  Effect.gen(function* () {
+    const events = yield* LLMClient.stream(request).pipe(
+      Stream.runCollect,
+      Effect.provide(fixedResponse(sseEvents(...input))),
+    )
+    expectLifecycle(
+      events,
+      input.some((event) => event.type === "response.completed"),
+    )
+    return events
+  })
+
+// Deliberately local to these basic-item fixtures, not a general stream validator.
+function expectLifecycle(events: ReadonlyArray<LLMEvent>, completed: boolean) {
+  const active = { text: new Set<string>(), reasoning: new Set<string>() }
+  const tools = new Map<string, "started" | "ended" | "called">()
+  events.forEach((event) => {
+    if (event.type === "text-start" || event.type === "reasoning-start") {
+      const blocks = event.type === "text-start" ? active.text : active.reasoning
+      expect(blocks.size).toBe(0)
+      blocks.add(event.id)
+    }
+    if (event.type === "text-delta" || event.type === "reasoning-delta") {
+      expect((event.type === "text-delta" ? active.text : active.reasoning).has(event.id)).toBe(true)
+    }
+    if (event.type === "text-end" || event.type === "reasoning-end") {
+      expect((event.type === "text-end" ? active.text : active.reasoning).delete(event.id)).toBe(true)
+    }
+    if (event.type === "tool-input-start") {
+      expect(tools.has(event.id)).toBe(false)
+      tools.set(event.id, "started")
+    }
+    if (event.type === "tool-input-delta") expect(tools.get(event.id)).toBe("started")
+    if (event.type === "tool-input-end") {
+      expect(tools.get(event.id)).toBe("started")
+      tools.set(event.id, "ended")
+    }
+    if (event.type === "tool-call") {
+      expect(tools.get(event.id)).toBe("ended")
+      tools.set(event.id, "called")
+    }
+    // Incomplete responses may leave pending tool inputs without a call.
+    if (event.type === "finish" && completed) {
+      expect(active.text.size).toBe(0)
+      expect(active.reasoning.size).toBe(0)
+      expect([...tools.values()].every((status) => status === "called")).toBe(true)
+    }
+  })
+  expect(events.filter(LLMEvent.is.stepStart)).toHaveLength(1)
+  expect(events[0]?.type).toBe("step-start")
+  expect(events.filter(LLMEvent.is.stepFinish)).toHaveLength(1)
+  expect(events.filter(LLMEvent.is.finish)).toHaveLength(1)
+  expect(events.slice(-2).map((event) => event.type)).toEqual(["step-finish", "finish"])
+}
+
+describe("Open Responses basic-item lifecycles", () => {
+  it.effect("closes implicit summary boundaries and ignores late events for completed reasoning", () =>
+    Effect.gen(function* () {
+      const item = { type: "reasoning", id: "rs_1", encrypted_content: "encrypted-state" }
+      const events = yield* collect(
+        { type: "response.output_item.added", output_index: 0, item: { ...item, encrypted_content: null } },
+        { type: "response.output_item.added", item: { ...item, encrypted_content: null } },
+        { type: "response.reasoning_summary_text.delta", item_id: "rs_1", summary_index: 0, delta: "First" },
+        { type: "response.reasoning_summary_part.added", item_id: "rs_1", summary_index: 1 },
+        { type: "response.reasoning_summary_part.done", item_id: "rs_1", summary_index: 0 },
+        { type: "response.reasoning_summary_text.done", item_id: "rs_1", summary_index: 1, text: "Second" },
+        // The third part omits both explicit summary boundaries.
+        {
+          type: "response.reasoning_summary_text.delta",
+          output_index: 0,
+          item_id: "wrong",
+          summary_index: 2,
+          delta: "Third",
+        },
+        { type: "response.output_item.done", item },
+        { type: "response.output_item.done", item },
+        { type: "response.output_item.added", item },
+        { type: "response.reasoning_summary_part.added", item_id: "rs_1", summary_index: 3 },
+        { type: "response.reasoning_summary_text.delta", item_id: "rs_1", summary_index: 3, delta: "late" },
+        { type: "response.reasoning_summary_text.done", item_id: "rs_1", summary_index: 2, text: "late final" },
+        { type: "response.reasoning_summary_part.done", item_id: "rs_1", summary_index: 3 },
+        completed,
+      )
+
+      expect(events.filter((event) => event.type.startsWith("reasoning-"))).toEqual([
+        {
+          type: "reasoning-start",
+          id: "rs_1:0",
+          providerMetadata: { "openai-compatible": { itemId: "rs_1", reasoningEncryptedContent: null } },
+        },
+        { type: "reasoning-delta", id: "rs_1:0", text: "First" },
+        { type: "reasoning-end", id: "rs_1:0", providerMetadata: { "openai-compatible": { itemId: "rs_1" } } },
+        {
+          type: "reasoning-start",
+          id: "rs_1:1",
+          providerMetadata: { "openai-compatible": { itemId: "rs_1", reasoningEncryptedContent: null } },
+        },
+        { type: "reasoning-delta", id: "rs_1:1", text: "Second" },
+        { type: "reasoning-end", id: "rs_1:1", providerMetadata: { "openai-compatible": { itemId: "rs_1" } } },
+        {
+          type: "reasoning-start",
+          id: "rs_1:2",
+          providerMetadata: { "openai-compatible": { itemId: "rs_1", reasoningEncryptedContent: null } },
+        },
+        { type: "reasoning-delta", id: "rs_1:2", text: "Third" },
+        {
+          type: "reasoning-end",
+          id: "rs_1:2",
+          providerMetadata: { "openai-compatible": { itemId: "rs_1", reasoningEncryptedContent: "encrypted-state" } },
+        },
+      ])
+    }),
+  )
+
+  it.effect("preserves done-only encrypted reasoning without replaying its summary or late events", () =>
+    Effect.gen(function* () {
+      const item = {
+        type: "reasoning",
+        id: "rs_1",
+        encrypted_content: "encrypted-state",
+        summary: [{ type: "summary_text", text: "Not streamed" }],
+      }
+      const events = yield* collect(
+        { type: "response.output_item.done", item },
+        { type: "response.output_item.done", item },
+        { type: "response.output_item.added", item },
+        { type: "response.reasoning_summary_text.delta", item_id: "rs_1", delta: "late" },
+        { type: "response.reasoning_summary_part.added", item_id: "rs_1", summary_index: 1 },
+        { type: "response.reasoning_summary_text.done", item_id: "rs_1", summary_index: 1, text: "late final" },
+        completed,
+        // Route termination must also prevent events after response completion.
+        { type: "response.output_item.added", item: { type: "reasoning", id: "rs_after" } },
+      )
+      expect(events.filter((event) => event.type.startsWith("reasoning-"))).toEqual([
+        {
+          type: "reasoning-start",
+          id: "rs_1",
+          providerMetadata: { "openai-compatible": { itemId: "rs_1", reasoningEncryptedContent: "encrypted-state" } },
+        },
+        {
+          type: "reasoning-end",
+          id: "rs_1",
+          providerMetadata: { "openai-compatible": { itemId: "rs_1", reasoningEncryptedContent: "encrypted-state" } },
+        },
+      ])
+    }),
+  )
+
+  it.effect("forgets never-streamed messages at implicit boundaries and preserves refusal phases", () =>
+    Effect.gen(function* () {
+      const events = yield* collect(
+        { type: "response.output_item.added", item: { type: "message", id: "msg_empty" } },
+        { type: "response.output_item.added", item: { type: "message", id: "msg_1", phase: "commentary" } },
+        { type: "response.output_text.done", item_id: "msg_1", text: "Checking" },
+        { type: "response.output_text.done", item_id: "msg_1", text: "Duplicate" },
+        { type: "response.output_item.added", item: { type: "message", id: "msg_2", phase: null } },
+        { type: "response.output_text.delta", item_id: "msg_empty", delta: "stale" },
+        { type: "response.output_text.done", item_id: "msg_empty", text: "stale final" },
+        { type: "response.output_text.delta", item_id: "msg_1", delta: "late" },
+        { type: "response.refusal.delta", item_id: "msg_2", delta: "Cannot help." },
+        { type: "response.refusal.done", item_id: "msg_2", refusal: "Cannot help." },
+        { type: "response.output_item.done", item: { type: "message", id: "msg_2", phase: "final_answer" } },
+        { type: "response.output_item.added", item: { type: "message", id: "msg_3", phase: null } },
+        { type: "response.refusal.done", item_id: "msg_3", refusal: "Done-only refusal." },
+        { type: "response.output_item.done", item: { type: "message", id: "msg_3" } },
+        completed,
+      )
+      expect(events.filter((event) => event.type.startsWith("text-"))).toEqual([
+        {
+          type: "text-start",
+          id: "msg_1",
+          providerMetadata: { "openai-compatible": { itemId: "msg_1", phase: "commentary" } },
+        },
+        { type: "text-delta", id: "msg_1", text: "Checking" },
+        {
+          type: "text-end",
+          id: "msg_1",
+          providerMetadata: { "openai-compatible": { itemId: "msg_1", phase: "commentary" } },
+        },
+        {
+          type: "text-start",
+          id: "msg_2",
+          providerMetadata: { "openai-compatible": { itemId: "msg_2", phase: null } },
+        },
+        { type: "text-delta", id: "msg_2", text: "Cannot help." },
+        {
+          type: "text-end",
+          id: "msg_2",
+          providerMetadata: { "openai-compatible": { itemId: "msg_2", phase: "final_answer" } },
+        },
+        {
+          type: "text-start",
+          id: "msg_3",
+          providerMetadata: { "openai-compatible": { itemId: "msg_3", phase: null } },
+        },
+        { type: "text-delta", id: "msg_3", text: "Done-only refusal." },
+        { type: "text-end", id: "msg_3", providerMetadata: { "openai-compatible": { itemId: "msg_3", phase: null } } },
+      ])
+    }),
+  )
+  it.effect("allows a message to be registered again without inheriting its previous phase", () =>
+    Effect.gen(function* () {
+      const events = yield* collect(
+        { type: "response.output_item.added", item: { type: "message", id: "msg_1", phase: "commentary" } },
+        { type: "response.output_text.delta", item_id: "msg_1", delta: "First" },
+        { type: "response.output_item.done", item: { type: "message", id: "msg_1" } },
+        { type: "response.output_item.added", item: { type: "message", id: "msg_1" } },
+        { type: "response.output_text.delta", item_id: "msg_1", delta: "Second" },
+        { type: "response.output_item.done", item: { type: "message", id: "msg_1" } },
+        completed,
+      )
+      expect(events.filter(LLMEvent.is.textEnd)).toEqual([
+        {
+          type: "text-end",
+          id: "msg_1",
+          providerMetadata: { "openai-compatible": { itemId: "msg_1", phase: "commentary" } },
+        },
+        { type: "text-end", id: "msg_1", providerMetadata: { "openai-compatible": { itemId: "msg_1" } } },
+      ])
+      expect(events.filter(LLMEvent.is.textDelta).map((event) => event.text)).toEqual(["First", "Second"])
+    }),
+  )
+  ;[undefined, "fc_1"].forEach((id) => {
+    it.effect(`opens and closes a done-only tool ${id === undefined ? "without" : "with"} an item id`, () =>
+      Effect.gen(function* () {
+        const item = {
+          type: "function_call",
+          ...(id === undefined ? {} : { id }),
+          call_id: "call_1",
+          name: "lookup",
+          arguments: '{"query":"weather"}',
+        }
+        const events = yield* collect(
+          { type: "response.output_item.done", item },
+          { type: "response.output_item.done", item: { ...item, id: "fc_1" } },
+          { type: "response.output_item.added", item },
+          completed,
+        )
+        const providerMetadata = id === undefined ? undefined : { "openai-compatible": { itemId: id } }
+        expect(events.filter((event) => event.type.startsWith("tool-"))).toEqual([
+          { type: "tool-input-start", id: "call_1", name: "lookup", providerMetadata },
+          { type: "tool-input-end", id: "call_1", name: "lookup", providerMetadata },
+          { type: "tool-call", id: "call_1", name: "lookup", input: { query: "weather" }, providerMetadata },
+        ])
+        expect(events.filter(LLMEvent.is.finish)).toEqual([
+          {
+            type: "finish",
+            reason: { normalized: "tool-calls", raw: undefined },
+            providerMetadata: { "openai-compatible": { responseId: "resp_1", serviceTier: undefined } },
+          },
+        ])
+      }),
+    )
+
+    it.effect(`deduplicates a pending call whose item id is ${id === undefined ? "introduced" : "omitted"} later`, () =>
+      Effect.gen(function* () {
+        const item = { type: "function_call", call_id: "call_1", name: "lookup" }
+        const first = { ...item, ...(id === undefined ? {} : { id }) }
+        const duplicate = { ...item, ...(id === undefined ? { id: "fc_1" } : {}) }
+        const events = yield* collect(
+          { type: "response.output_item.added", item: first },
+          { type: "response.function_call_arguments.delta", item_id: id ?? "call_1", delta: '{"query":"weather"}' },
+          { type: "response.output_item.added", item: duplicate },
+          { type: "response.output_item.done", item: duplicate },
+          { type: "response.output_item.done", item: first },
+          { type: "response.output_item.added", item: duplicate },
+          completed,
+        )
+        // Identity metadata comes from the first admission, not the duplicate.
+        const providerMetadata = id === undefined ? undefined : { "openai-compatible": { itemId: id } }
+        expect(events.filter((event) => event.type.startsWith("tool-"))).toEqual([
+          { type: "tool-input-start", id: "call_1", name: "lookup", providerMetadata },
+          {
+            type: "tool-input-delta",
+            id: "call_1",
+            name: "lookup",
+            text: '{"query":"weather"}',
+            input: { query: "weather" },
+          },
+          { type: "tool-input-end", id: "call_1", name: "lookup", providerMetadata },
+          { type: "tool-call", id: "call_1", name: "lookup", input: { query: "weather" }, providerMetadata },
+        ])
+      }),
+    )
+  })
+
+  it.effect("recovers pending items in completed output order with terminal encrypted metadata", () =>
+    Effect.gen(function* () {
+      const events = yield* collect(
+        {
+          type: "response.output_item.added",
+          item: { type: "function_call", id: "fc_1", call_id: "call_1", name: "lookup" },
+        },
+        { type: "response.function_call_arguments.delta", item_id: "fc_1", delta: '{"query":"draft"}' },
+        { type: "response.output_item.added", item: { type: "reasoning", id: "rs_1", encrypted_content: null } },
+        { type: "response.reasoning_summary_text.delta", item_id: "rs_1", delta: "Thinking" },
+        { type: "response.reasoning_summary_part.done", item_id: "rs_1", summary_index: 0 },
+        {
+          type: "response.completed",
+          response: {
+            id: "resp_1",
+            output: [
+              { type: "reasoning", id: "rs_1", encrypted_content: "terminal-state" },
+              { type: "function_call", id: "fc_1", call_id: "call_1", name: "lookup", arguments: '{"query":"final"}' },
+              { type: "function_call", id: "fc_unseen", call_id: "call_unseen", name: "lookup", arguments: "{}" },
+            ],
+          },
+        },
+      )
+      expect(events.slice(5, -2)).toEqual([
+        {
+          type: "reasoning-end",
+          id: "rs_1:0",
+          providerMetadata: { "openai-compatible": { itemId: "rs_1", reasoningEncryptedContent: "terminal-state" } },
+        },
+        {
+          type: "tool-input-end",
+          id: "call_1",
+          name: "lookup",
+          providerMetadata: { "openai-compatible": { itemId: "fc_1" } },
+        },
+        {
+          type: "tool-call",
+          id: "call_1",
+          name: "lookup",
+          input: { query: "final" },
+          providerMetadata: { "openai-compatible": { itemId: "fc_1" } },
+        },
+      ])
+    }),
+  )
+
+  it.effect("preserves call identity and pending order when an item id is reused", () =>
+    Effect.gen(function* () {
+      const first = { type: "function_call", id: "fc_1", call_id: "call_1", name: "lookup", arguments: "{}" }
+      const events = yield* collect(
+        { type: "response.output_item.added", item: first },
+        { type: "response.output_item.added", item: { ...first, id: "fc_2", call_id: "call_2" } },
+        { type: "response.output_item.done", item: first },
+        { type: "response.output_item.added", item: { ...first, call_id: "call_3" } },
+        { type: "response.output_item.done", item: first },
+        completed,
+      )
+      expect(events.filter(LLMEvent.is.toolCall).map((event) => event.id)).toEqual(["call_1", "call_2", "call_3"])
+    }),
+  )
+
+  it.effect("keeps text and reasoning identities separate even with empty item ids", () =>
+    Effect.gen(function* () {
+      const events = yield* collect(
+        { type: "response.output_item.added", item: { type: "reasoning", id: "" } },
+        { type: "response.output_item.added", item: { type: "message", id: "" } },
+        { type: "response.output_item.added", item: { type: "reasoning", id: "" } },
+        { type: "response.reasoning_summary_text.delta", item_id: "", delta: "Thinking" },
+        { type: "response.output_text.delta", item_id: "", delta: "Answer" },
+        { type: "response.output_item.done", item: { type: "reasoning", id: "", encrypted_content: "state" } },
+        { type: "response.output_item.done", item: { type: "message", id: "" } },
+        completed,
+      )
+      expect(events.filter(LLMEvent.is.reasoningDelta).map((event) => event.text)).toEqual(["Thinking"])
+      expect(events.filter(LLMEvent.is.textDelta).map((event) => event.text)).toEqual(["Answer"])
+      expect(events.filter(LLMEvent.is.reasoningEnd)).toEqual([
+        {
+          type: "reasoning-end",
+          id: ":0",
+          providerMetadata: { "openai-compatible": { itemId: "", reasoningEncryptedContent: "state" } },
+        },
+      ])
+    }),
+  )
+
+  it.effect("does not recover a completed tool from a tracked message with the same id", () =>
+    Effect.gen(function* () {
+      const events = yield* collect(
+        { type: "response.output_item.added", item: { type: "message", id: "item_1" } },
+        { type: "response.output_text.delta", item_id: "item_1", delta: "Answer" },
+        {
+          type: "response.completed",
+          response: {
+            id: "resp_1",
+            output: [{ type: "function_call", id: "item_1", call_id: "call_1", name: "lookup", arguments: "{}" }],
+          },
+        },
+      )
+      expect(events.filter(LLMEvent.is.toolCall)).toEqual([])
+      expect(events.filter(LLMEvent.is.finish).map((event) => event.reason.normalized)).toEqual(["stop"])
+    }),
+  )
+
+  it.effect("flushes pending calls and open text when completed output is absent", () =>
+    Effect.gen(function* () {
+      const events = yield* collect(
+        { type: "response.output_item.added", item: { type: "message", id: "msg_1", phase: "final_answer" } },
+        { type: "response.output_text.delta", item_id: "msg_1", delta: "Answer" },
+        {
+          type: "response.output_item.added",
+          item: { type: "function_call", call_id: "call_1", name: "lookup", arguments: "{}" },
+        },
+        completed,
+      )
+      // Generic terminal closure does not repeat the message's phase metadata.
+      expect(events.slice(4, -2)).toEqual([
+        { type: "tool-input-end", id: "call_1", name: "lookup" },
+        { type: "tool-call", id: "call_1", name: "lookup", input: {} },
+        { type: "text-end", id: "msg_1" },
+      ])
+    }),
+  )
+
+  it.effect("does not reconcile pending calls or terminal reasoning metadata on incomplete responses", () =>
+    Effect.gen(function* () {
+      const events = yield* collect(
+        { type: "response.output_item.added", item: { type: "reasoning", id: "rs_1", encrypted_content: null } },
+        { type: "response.reasoning_summary_text.delta", item_id: "rs_1", delta: "Partial" },
+        {
+          type: "response.output_item.added",
+          item: { type: "function_call", id: "fc_1", call_id: "call_1", name: "lookup" },
+        },
+        { type: "response.function_call_arguments.delta", item_id: "fc_1", delta: '{"query":' },
+        {
+          type: "response.incomplete",
+          response: {
+            id: "resp_1",
+            incomplete_details: { reason: "max_output_tokens" },
+            output: [
+              { type: "reasoning", id: "rs_1", encrypted_content: "not-reconciled" },
+              {
+                type: "function_call",
+                id: "fc_1",
+                call_id: "call_1",
+                name: "lookup",
+                arguments: '{"query":"not-reconciled"}',
+              },
+            ],
+          },
+        },
+      )
+      expect(events.filter(LLMEvent.is.toolInputEnd)).toEqual([])
+      expect(events.filter(LLMEvent.is.toolCall)).toEqual([])
+      expect(events.filter(LLMEvent.is.reasoningEnd)).toEqual([{ type: "reasoning-end", id: "rs_1:0" }])
+      expect(events.filter(LLMEvent.is.finish)).toEqual([
+        {
+          type: "finish",
+          reason: { normalized: "length", raw: "max_output_tokens" },
+          providerMetadata: { "openai-compatible": { responseId: "resp_1", serviceTier: undefined } },
+        },
+      ])
+    }),
+  )
+})

packages/ai/test/provider/openai-chat.test.ts

@@ -7,6 +7,7 @@ import {
   AIError,
   LLMEvent,
   LLMRequest,
+  LLMResponse,
   Message,
   LanguageModel,
   ToolCallPart,
@@ -807,6 +808,28 @@ describe("OpenAI Chat route", () => {
     }),
   )
 
+  it.effect("finishes at the done sentinel without waiting for response EOF", () =>
+    Effect.gen(function* () {
+      const stream = new ReadableStream<Uint8Array>({
+        start(controller) {
+          controller.enqueue(
+            new TextEncoder().encode(sseEvents(deltaChunk({ content: "Hello" }), deltaChunk({}, "stop"))),
+          )
+        },
+      })
+      const response = yield* LLMClient.generate(request).pipe(
+        Effect.provide(
+          fixedResponse(stream, {
+            headers: { "content-type": "text/event-stream" },
+          }),
+        ),
+      )
+
+      expect(response.text).toBe("Hello")
+      expect(response.events.at(-1)?.type).toBe("finish")
+    }),
+  )
+
   it.effect("preserves streamed refusals as ordinary assistant text", () =>
     Effect.gen(function* () {
       const response = yield* LLMClient.generate(request).pipe(
@@ -1127,7 +1150,7 @@ describe("OpenAI Chat route", () => {
     }),
   )
 
-  it.effect("preserves scalar reasoning after content starts", () =>
+  it.effect("preserves scalar reasoning after content starts in one lifecycle", () =>
     Effect.gen(function* () {
       const details = [{ type: "reasoning.text", text: "detail", format: "unknown", index: 0 }]
       const response = yield* LLMClient.generate(request).pipe(
@@ -1144,8 +1167,35 @@ describe("OpenAI Chat route", () => {
       )
 
       expect(response.reasoning).toBe("detailscalar")
-      expect(response.events.filter(LLMEvent.is.reasoningStart)).toHaveLength(2)
-      expect(response.events.filter(LLMEvent.is.reasoningEnd)).toHaveLength(2)
+      expect(response.events.filter(LLMEvent.is.reasoningStart)).toHaveLength(1)
+      expect(response.events.filter(LLMEvent.is.reasoningEnd)).toHaveLength(1)
+      expect(response.message.content.filter((part) => part.type === "reasoning")).toHaveLength(1)
+      expect(response.message.content.find((part) => part.type === "reasoning")?.providerMetadata).toEqual({
+        openai: { reasoningField: "reasoning", reasoningDetails: details },
+      })
+    }),
+  )
+
+  it.effect("keeps one reasoning lifecycle across many content chunks", () =>
+    Effect.gen(function* () {
+      const details = [{ type: "reasoning.text", text: "thinking", format: "anthropic-claude-v1", index: 0 }]
+      const response = yield* LLMClient.generate(request).pipe(
+        Effect.provide(
+          fixedResponse(
+            sseEvents(
+              { choices: [{ delta: { reasoning: "thinking", reasoning_details: details } }] },
+              ...Array.from({ length: 25 }, (_, index) => deltaChunk({ content: `chunk-${index} ` })),
+              deltaChunk({}, "stop"),
+            ),
+          ),
+        ),
+      )
+
+      expect(response.reasoning).toBe("thinking")
+      expect(response.text).toBe(Array.from({ length: 25 }, (_, index) => `chunk-${index} `).join(""))
+      expect(response.events.filter(LLMEvent.is.reasoningStart)).toHaveLength(1)
+      expect(response.events.filter(LLMEvent.is.reasoningEnd)).toHaveLength(1)
+      expect(response.message.content.filter((part) => part.type === "reasoning")).toHaveLength(1)
       expect(response.message.content.find((part) => part.type === "reasoning")?.providerMetadata).toEqual({
         openai: { reasoningField: "reasoning", reasoningDetails: details },
       })
@@ -1191,7 +1241,18 @@ describe("OpenAI Chat route", () => {
           index: 0,
         },
       ]
-      const response = yield* LLMClient.generate(request).pipe(
+      // Snapshot reasoning-end metadata as each event is published so the
+      // assertion cannot pass through later mutation of a shared array.
+      const publishedEndMetadata: unknown[] = []
+      const response = yield* LLMClient.stream(request).pipe(
+        Stream.tap((event) =>
+          Effect.sync(() => {
+            if (LLMEvent.is.reasoningEnd(event))
+              publishedEndMetadata.push(decodeJson(encodeJson(event.providerMetadata)))
+          }),
+        ),
+        Stream.runFold(LLMResponse.empty, LLMResponse.reduce),
+        Effect.map((state) => LLMResponse.complete(state)!),
         Effect.provide(
           fixedResponse(
             sseEvents(
@@ -1212,10 +1273,12 @@ describe("OpenAI Chat route", () => {
       expect(response.events.filter(LLMEvent.is.reasoningStart)).toHaveLength(1)
       expect(response.events.filter(LLMEvent.is.reasoningDelta)).toHaveLength(1)
       expect(response.events.filter(LLMEvent.is.reasoningEnd)).toHaveLength(1)
-      expect(response.events.filter(LLMEvent.is.reasoningEnd).at(-1)?.providerMetadata).toEqual({
-        openai: { reasoningField: "reasoning", reasoningDetails: merged },
-      })
-      expect(response.events.findIndex(LLMEvent.is.reasoningEnd)).toBeLessThan(
+      expect(publishedEndMetadata).toEqual([{ openai: { reasoningField: "reasoning", reasoningDetails: merged } }])
+      expect(response.events.findIndex(LLMEvent.is.reasoningStart)).toBeLessThan(
+        response.events.findIndex(LLMEvent.is.textStart),
+      )
+      // Reasoning stays open alongside text and closes once during finalization.
+      expect(response.events.findIndex(LLMEvent.is.reasoningEnd)).toBeGreaterThan(
         response.events.findIndex(LLMEvent.is.textStart),
       )
 

packages/ai/test/provider/openai-compatible-chat.test.ts

@@ -405,6 +405,19 @@ describe("OpenAI-compatible Chat route", () => {
     }),
   )
 
+  it.effect("ignores events after the done sentinel", () =>
+    Effect.gen(function* () {
+      const body = `${sseEvents(
+        deltaChunk({ content: "Hello" }),
+        deltaChunk({}, "stop"),
+      )}data: ${JSON.stringify(deltaChunk({ content: " late" }))}\n\n`
+      const response = yield* LLMClient.generate(request).pipe(Effect.provide(fixedResponse(body)))
+
+      expect(response.text).toBe("Hello")
+      expect(response.finishReason).toEqual({ normalized: "stop", raw: "stop" })
+    }),
+  )
+
   it.effect("accepts nullable usage and preserves provider fields", () =>
     Effect.gen(function* () {
       const response = yield* LLMClient.generate(request).pipe(

packages/ai/test/provider/openai-responses.test.ts

@@ -2750,6 +2750,227 @@ describe("OpenAI Responses route", () => {
     }),
   )
 
+  it.effect("concludes reasoning at implicit summary boundaries", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(
+        LLMRequest.update(request, { providerOptions: { store: false } }),
+      ).pipe(
+        Effect.provide(
+          fixedResponse(
+            sseEvents(
+              {
+                type: "response.output_item.added",
+                item: { type: "reasoning", id: "rs_1", encrypted_content: null },
+              },
+              { type: "response.reasoning_summary_part.added", item_id: "rs_1", summary_index: 0 },
+              { type: "response.reasoning_summary_text.delta", item_id: "rs_1", summary_index: 0, delta: "First" },
+              // The next part is enough to conclude the previous one even when
+              // its done event is delayed.
+              { type: "response.reasoning_summary_part.added", item_id: "rs_1", summary_index: 1 },
+              { type: "response.reasoning_summary_part.done", item_id: "rs_1", summary_index: 0 },
+              { type: "response.reasoning_summary_text.delta", item_id: "rs_1", summary_index: 1, delta: "Second" },
+              { type: "response.reasoning_summary_part.done", item_id: "rs_1", summary_index: 1 },
+              // Some compatible providers begin the next part with its first delta.
+              { type: "response.reasoning_summary_text.delta", item_id: "rs_1", summary_index: 2, delta: "Third" },
+              {
+                type: "response.output_item.done",
+                item: { type: "reasoning", id: "rs_1", encrypted_content: "encrypted-state" },
+              },
+              { type: "response.completed", response: { id: "resp_1" } },
+            ),
+          ),
+        ),
+      )
+
+      expect(response.reasoning).toBe("FirstSecondThird")
+      expect(response.events.filter((event) => event.type.startsWith("reasoning-"))).toEqual([
+        {
+          type: "reasoning-start",
+          id: "rs_1:0",
+          providerMetadata: { openai: { itemId: "rs_1", reasoningEncryptedContent: null } },
+        },
+        { type: "reasoning-delta", id: "rs_1:0", text: "First", providerMetadata: undefined },
+        { type: "reasoning-end", id: "rs_1:0", providerMetadata: { openai: { itemId: "rs_1" } } },
+        {
+          type: "reasoning-start",
+          id: "rs_1:1",
+          providerMetadata: { openai: { itemId: "rs_1", reasoningEncryptedContent: null } },
+        },
+        { type: "reasoning-delta", id: "rs_1:1", text: "Second", providerMetadata: undefined },
+        {
+          type: "reasoning-end",
+          id: "rs_1:1",
+          providerMetadata: { openai: { itemId: "rs_1" } },
+        },
+        {
+          type: "reasoning-start",
+          id: "rs_1:2",
+          providerMetadata: { openai: { itemId: "rs_1", reasoningEncryptedContent: null } },
+        },
+        { type: "reasoning-delta", id: "rs_1:2", text: "Third", providerMetadata: undefined },
+        {
+          type: "reasoning-end",
+          id: "rs_1:2",
+          providerMetadata: { openai: { itemId: "rs_1", reasoningEncryptedContent: "encrypted-state" } },
+        },
+      ])
+    }),
+  )
+
+  it.effect("rejects a reasoning item that starts before the previous item ends", () =>
+    Effect.gen(function* () {
+      const error = yield* LLMClient.generate(request).pipe(
+        Effect.provide(
+          fixedResponse(
+            sseEvents(
+              { type: "response.output_item.added", item: { type: "reasoning", id: "rs_1" } },
+              { type: "response.reasoning_summary_text.delta", item_id: "rs_1", summary_index: 0, delta: "First" },
+              { type: "response.output_item.added", item: { type: "reasoning", id: "rs_2" } },
+            ),
+          ),
+        ),
+        Effect.flip,
+      )
+
+      expect(error.reason._tag).toBe("InvalidProviderOutput")
+      expect(error.message).toContain("started reasoning before the previous item ended")
+    }),
+  )
+
+  it.effect("concludes text at implicit message boundaries", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(request).pipe(
+        Effect.provide(
+          fixedResponse(
+            sseEvents(
+              // An item that never streams text is untracked at the boundary too.
+              { type: "response.output_item.added", item: { type: "message", id: "msg_0" } },
+              { type: "response.output_item.added", item: { type: "message", id: "msg_1" } },
+              { type: "response.output_text.delta", item_id: "msg_1", delta: "First" },
+              // The previous message's done event is missing; the next message
+              // item is the boundary for its open text.
+              { type: "response.output_item.added", item: { type: "message", id: "msg_2" } },
+              // Late deltas for concluded or untracked messages must stay no-ops.
+              { type: "response.output_text.delta", item_id: "msg_1", delta: " late" },
+              { type: "response.output_text.delta", item_id: "msg_0", delta: " stale" },
+              { type: "response.output_text.delta", item_id: "msg_2", delta: "Second" },
+              { type: "response.output_item.done", item: { type: "message", id: "msg_2" } },
+              { type: "response.completed", response: { id: "resp_1" } },
+            ),
+          ),
+        ),
+      )
+
+      expect(response.text).toBe("FirstSecond")
+      expect(response.events.filter((event) => event.type.startsWith("text-"))).toMatchObject([
+        { type: "text-start", id: "msg_1" },
+        { type: "text-delta", id: "msg_1", text: "First" },
+        { type: "text-end", id: "msg_1" },
+        { type: "text-start", id: "msg_2" },
+        { type: "text-delta", id: "msg_2", text: "Second" },
+        { type: "text-end", id: "msg_2" },
+      ])
+    }),
+  )
+
+  it.effect("opens the tool lifecycle for a done-only function call", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(request).pipe(
+        Effect.provide(
+          fixedResponse(
+            sseEvents(
+              // No output_item.added: the call arrives only as a completed item.
+              {
+                type: "response.output_item.done",
+                item: {
+                  type: "function_call",
+                  id: "fc_1",
+                  call_id: "call_1",
+                  name: "lookup",
+                  arguments: '{"query":"weather"}',
+                },
+              },
+              { type: "response.completed", response: { id: "resp_1" } },
+            ),
+          ),
+        ),
+      )
+
+      expect(response.events.filter((event) => event.type.startsWith("tool-"))).toMatchObject([
+        { type: "tool-input-start", id: "call_1", name: "lookup" },
+        { type: "tool-input-end", id: "call_1", name: "lookup" },
+        { type: "tool-call", id: "call_1", name: "lookup", input: { query: "weather" } },
+      ])
+      expect(response.finishReason.normalized).toBe("tool-calls")
+    }),
+  )
+
+  it.effect("ignores duplicate item boundary events", () =>
+    Effect.gen(function* () {
+      const response = yield* LLMClient.generate(request).pipe(
+        Effect.provide(
+          fixedResponse(
+            sseEvents(
+              { type: "response.output_item.added", item: { type: "reasoning", id: "rs_1" } },
+              // Duplicate added for a known item is not overlap and must no-op.
+              { type: "response.output_item.added", item: { type: "reasoning", id: "rs_1" } },
+              { type: "response.reasoning_summary_text.delta", item_id: "rs_1", summary_index: 0, delta: "Think" },
+              { type: "response.output_item.done", item: { type: "reasoning", id: "rs_1" } },
+              { type: "response.output_item.done", item: { type: "reasoning", id: "rs_1" } },
+              {
+                type: "response.output_item.added",
+                item: { type: "function_call", id: "fc_1", call_id: "call_1", name: "lookup", arguments: "" },
+              },
+              {
+                type: "response.output_item.added",
+                item: { type: "function_call", id: "fc_1", call_id: "call_1", name: "lookup", arguments: "" },
+              },
+              { type: "response.function_call_arguments.delta", item_id: "fc_1", delta: '{"query":"weather"}' },
+              {
+                type: "response.output_item.done",
+                item: {
+                  type: "function_call",
+                  id: "fc_1",
+                  call_id: "call_1",
+                  name: "lookup",
+                  arguments: '{"query":"weather"}',
+                },
+              },
+              {
+                type: "response.output_item.done",
+                item: {
+                  type: "function_call",
+                  id: "fc_1",
+                  call_id: "call_1",
+                  name: "lookup",
+                  arguments: '{"query":"weather"}',
+                },
+              },
+              // Duplicates that drop the item id still resolve the same call.
+              {
+                type: "response.output_item.done",
+                item: { type: "function_call", call_id: "call_1", name: "lookup", arguments: '{"query":"weather"}' },
+              },
+              {
+                type: "response.output_item.added",
+                item: { type: "function_call", call_id: "call_1", name: "lookup", arguments: "" },
+              },
+              { type: "response.completed", response: { id: "resp_1" } },
+            ),
+          ),
+        ),
+      )
+
+      expect(response.reasoning).toBe("Think")
+      expect(response.events.filter((event) => event.type === "reasoning-start")).toHaveLength(1)
+      expect(response.events.filter((event) => event.type === "reasoning-end")).toHaveLength(1)
+      expect(response.events.filter((event) => event.type === "tool-input-start")).toHaveLength(1)
+      expect(response.events.filter(LLMEvent.is.toolCall)).toEqual([
+        expect.objectContaining({ id: "call_1", input: { query: "weather" } }),
+      ])
+    }),
+  )
+
   it.effect("reconciles reasoning summaries that arrive only as finals", () =>
     Effect.gen(function* () {
       const response = yield* LLMClient.generate(

packages/ai/test/provider/openrouter.test.ts

@@ -305,9 +305,11 @@ describe("OpenRouter", () => {
       expect(prepared.body.messages).toEqual([
         {
           role: "assistant",
-          content: null,
+          content: "",
           reasoning: "Thinking",
+          reasoning_content: undefined,
           reasoning_details: details,
+          reasoning_text: undefined,
         },
       ])
     }),
@@ -335,7 +337,14 @@ describe("OpenRouter", () => {
       )
 
       expect(prepared.body.messages).toEqual([
-        { role: "assistant", content: null, reasoning: "Thinking", reasoning_details: details },
+        {
+          role: "assistant",
+          content: "",
+          reasoning: "Thinking",
+          reasoning_content: undefined,
+          reasoning_details: details,
+          reasoning_text: undefined,
+        },
       ])
     }),
   )
@@ -361,7 +370,14 @@ describe("OpenRouter", () => {
       )
 
       expect(prepared.body.messages).toEqual([
-        { role: "assistant", content: null, reasoning: "AB", reasoning_details: details },
+        {
+          role: "assistant",
+          content: "",
+          reasoning: "AB",
+          reasoning_content: undefined,
+          reasoning_details: details,
+          reasoning_text: undefined,
+        },
       ])
     }),
   )
@@ -376,7 +392,16 @@ describe("OpenRouter", () => {
         }),
       )
 
-      expect(prepared.body.messages).toEqual([{ role: "assistant", content: null }])
+      expect(prepared.body.messages).toEqual([
+        {
+          role: "assistant",
+          content: "",
+          reasoning: undefined,
+          reasoning_content: undefined,
+          reasoning_details: undefined,
+          reasoning_text: undefined,
+        },
+      ])
     }),
   )
 })

packages/ai/test/response.test.ts

@@ -104,6 +104,60 @@ describe("LLMResponse reducer", () => {
     ])
   })
 
+  test("authoritative text-end value replaces accumulated deltas", () => {
+    const response = LLMResponse.fromEvents([
+      LLMEvent.textStart({ id: "t1" }),
+      LLMEvent.textDelta({ id: "t1", text: "Hel" }),
+      LLMEvent.textEnd({ id: "t1", text: "Hello!" }),
+      LLMEvent.finish({ reason: { normalized: "stop" } }),
+    ])
+
+    expect(response?.message.content).toEqual([{ type: "text", text: "Hello!" }])
+    expect(response?.text).toBe("Hello!")
+  })
+
+  test("text-end without value keeps joined deltas", () => {
+    const response = LLMResponse.fromEvents([
+      LLMEvent.textStart({ id: "t1" }),
+      LLMEvent.textDelta({ id: "t1", text: "Hel" }),
+      LLMEvent.textDelta({ id: "t1", text: "lo" }),
+      LLMEvent.textEnd({ id: "t1" }),
+      LLMEvent.finish({ reason: { normalized: "stop" } }),
+    ])
+
+    expect(response?.message.content).toEqual([{ type: "text", text: "Hello" }])
+    expect(response?.text).toBe("Hello")
+  })
+
+  test("authoritative reasoning-end value replaces only its own fragment", () => {
+    const response = LLMResponse.fromEvents([
+      LLMEvent.reasoningStart({ id: "r1:0" }),
+      LLMEvent.reasoningDelta({ id: "r1:0", text: "First summ" }),
+      LLMEvent.reasoningEnd({ id: "r1:0", text: "First summary." }),
+      LLMEvent.reasoningStart({ id: "r1:1" }),
+      LLMEvent.reasoningDelta({ id: "r1:1", text: "Second summary." }),
+      LLMEvent.reasoningEnd({ id: "r1:1" }),
+      LLMEvent.finish({ reason: { normalized: "stop" } }),
+    ])
+
+    expect(response?.message.content).toEqual([
+      { type: "reasoning", text: "First summary." },
+      { type: "reasoning", text: "Second summary." },
+    ])
+    expect(response?.reasoning).toBe("First summary.Second summary.")
+  })
+
+  test("end value recovers a fragment that streamed no deltas", () => {
+    const response = LLMResponse.fromEvents([
+      LLMEvent.textStart({ id: "t1" }),
+      LLMEvent.textEnd({ id: "t1", text: "Hello!" }),
+      LLMEvent.finish({ reason: { normalized: "stop" } }),
+    ])
+
+    expect(response?.message.content).toEqual([{ type: "text", text: "Hello!" }])
+    expect(response?.text).toBe("Hello!")
+  })
+
   test("clears malformed tool input without appending an executable call", () => {
     const state = reduce([
       LLMEvent.toolInputStart({ id: "call_1", name: "lookup" }),

packages/ai/test/schema.test.ts

@@ -250,7 +250,7 @@ test("AI error reasons are tagged Errors with required messages", () => {
       provider: model.provider,
       model: model.id,
     }),
-    new AuthenticationError({ message: "Missing credentials", kind: "missing" }),
+    new AuthenticationError({ message: "Missing credentials" }),
     new RateLimitError({ message: "Rate limited" }),
     new QuotaExceededError({ message: "Quota exceeded" }),
     new ContentPolicyError({ message: "Content blocked" }),

packages/ai/test/testing.test.ts

@@ -0,0 +1,331 @@
+import { describe, expect } from "bun:test"
+import { AIError, LanguageModel, LLM, LLMClient, LLMEvent, LLMRequest, RateLimitError } from "../src/index.js"
+import { OpenAIChat } from "../src/protocols/openai-chat.js"
+import { TestLLM } from "../src/testing.js"
+import { Effect, Fiber, Latch, Stream } from "effect"
+import { testEffect } from "./lib/effect.js"
+
+const request = LLM.request({
+  model: LanguageModel.make({ id: "fictional-model", provider: "fixture", route: OpenAIChat.route }),
+  prompt: "Say hello",
+})
+const legacy = testEffect(TestLLM.layer())
+const it = testEffect(TestLLM.testLayer())
+
+describe("TestLLM legacy client", () => {
+  legacy.effect("does not observe requests or consume responses until execution", () =>
+    Effect.gen(function* () {
+      const llm = yield* TestLLM.Service
+      yield* llm.push(TestLLM.text("first", "first"), TestLLM.text("second", "second"))
+
+      llm.client.stream(request)
+      llm.client.generate(request)
+      expect(llm.requests).toEqual([])
+
+      expect((yield* llm.client.generate(request)).text).toBe("first")
+      expect((yield* llm.client.generate(request)).text).toBe("second")
+      expect(llm.requests).toEqual([request, request])
+    }),
+  )
+
+  legacy.effect("assigns and records a fresh response for each execution", () =>
+    Effect.gen(function* () {
+      const llm = yield* TestLLM.Service
+      yield* llm.push(
+        TestLLM.text("first", "first"),
+        TestLLM.text("second", "second"),
+        TestLLM.text("third", "third"),
+        TestLLM.text("fourth", "fourth"),
+      )
+      const stream = llm.client.stream(request)
+      const generate = llm.client.generate(request)
+
+      expect(yield* Stream.runCollect(stream)).toEqual(TestLLM.text("first", "first"))
+      expect(yield* Stream.runCollect(stream)).toEqual(TestLLM.text("second", "second"))
+      expect((yield* generate).text).toBe("third")
+      expect((yield* generate).text).toBe("fourth")
+      expect(llm.requests).toEqual([request, request, request, request])
+    }),
+  )
+
+  legacy.effect("keeps module-level controls and clientLayer on the same backing state", () =>
+    Effect.gen(function* () {
+      const llm = yield* TestLLM.Service
+      const requests = llm.requests
+      yield* TestLLM.push(TestLLM.text("queued", "queued"))
+      yield* TestLLM.always(TestLLM.text("fallback", "fallback"))
+      expect((yield* LLMClient.generate(request).pipe(Effect.provide(TestLLM.clientLayer))).text).toBe("queued")
+      yield* TestLLM.wait(1)
+      expect(requests).toEqual([request])
+      requests.length = 0
+      expect((yield* llm.client.generate(request)).text).toBe("fallback")
+      expect(llm.requests).toBe(requests)
+      expect(requests).toEqual([request])
+    }),
+  )
+})
+
+describe("TestLLM first-class client", () => {
+  it.effect("provides the same object under normal and test tags with snapshot observations", () =>
+    Effect.gen(function* () {
+      const llm = yield* TestLLM.Test
+      const client = yield* LLMClient.Service
+      expect(client).toBe(llm)
+      const before = yield* llm.requests()
+      yield* llm.push(TestLLM.text("hello", "answer"))
+      const generate = client.generate(request)
+      client.stream(request)
+      expect(yield* llm.requests()).toEqual([])
+
+      expect((yield* generate).text).toBe("hello")
+      expect(before).toEqual([])
+      expect(yield* llm.requests()).toEqual([request])
+      expect(yield* llm.requests()).not.toBe(yield* llm.requests())
+    }),
+  )
+
+  it.effect("prioritizes queued replies over request-dependent and constant fallbacks", () =>
+    Effect.gen(function* () {
+      const llm = yield* TestLLM.Test
+      const served: LLMRequest[] = []
+      yield* llm.always(TestLLM.text("old fallback", "old"))
+      yield* llm.push(TestLLM.text("first", "first"), TestLLM.text("second", "second"))
+      yield* llm.serve((request) => {
+        served.push(request)
+        return TestLLM.text(request.promptCacheKey ?? "default", "served")
+      })
+
+      expect((yield* LLMClient.generate(request)).text).toBe("first")
+      expect((yield* LLMClient.generate(request)).text).toBe("second")
+      expect(served).toEqual([])
+      const selected = LLMRequest.update(request, { promptCacheKey: "selected" })
+      expect((yield* LLMClient.generate(selected)).text).toBe("selected")
+      expect((yield* LLMClient.generate(request)).text).toBe("default")
+      expect(served).toEqual([selected, request])
+
+      yield* llm.push(TestLLM.text("queued again", "queued"))
+      yield* llm.always(TestLLM.text("constant", "constant"))
+      expect((yield* LLMClient.generate(request)).text).toBe("queued again")
+      expect((yield* LLMClient.generate(request)).text).toBe("constant")
+      expect((yield* LLMClient.generate(request)).text).toBe("constant")
+      expect(served).toEqual([selected, request])
+    }),
+  )
+
+  testEffect(
+    TestLLM.testLayer({
+      transformRequest: (request) => LLMRequest.update(request, { promptCacheKey: "observation" }),
+    }),
+  ).effect("transforms observations without changing the request passed to the responder", () =>
+    Effect.gen(function* () {
+      const llm = yield* TestLLM.Test
+      yield* llm.serve((input) => {
+        expect(input).toBe(request)
+        return TestLLM.text("original", "answer")
+      })
+      const generate = llm.generate(request)
+      expect(yield* llm.requests()).toEqual([])
+      expect((yield* generate).text).toBe("original")
+      expect(yield* llm.requests()).toEqual([LLMRequest.update(request, { promptCacheKey: "observation" })])
+    }),
+  )
+
+  it.effect("broadcasts request-arrival waits and satisfies waits registered afterward", () =>
+    Effect.gen(function* () {
+      const llm = yield* TestLLM.Test
+      yield* llm.always(TestLLM.stop())
+      const first = yield* llm.wait(2).pipe(Effect.forkChild({ startImmediately: true }))
+      const second = yield* llm.wait(2).pipe(Effect.forkChild({ startImmediately: true }))
+      yield* llm.generate(request)
+      expect(first.pollUnsafe()).toBeUndefined()
+      expect(second.pollUnsafe()).toBeUndefined()
+      yield* llm.generate(request)
+      yield* Fiber.join(first)
+      yield* Fiber.join(second)
+      yield* llm.wait(2)
+      expect(yield* llm.requests()).toHaveLength(2)
+    }),
+  )
+  ;(["queued", "served"] as const).forEach((mode) => {
+    it.effect(`assigns ${mode} replies before resuming request-arrival continuations`, () =>
+      Effect.gen(function* () {
+        const llm = yield* TestLLM.Test
+        const responses = [TestLLM.text("first", "first"), TestLLM.text("second", "second")]
+        yield* mode === "queued" ? llm.push(...responses) : llm.serve(() => responses.shift() ?? [])
+        const later = yield* llm
+          .wait(1)
+          .pipe(Effect.andThen(llm.generate(request)), Effect.forkChild({ startImmediately: true }))
+
+        expect((yield* llm.generate(request)).text).toBe("first")
+        expect((yield* Fiber.join(later)).text).toBe("second")
+        expect(yield* llm.requests()).toEqual([request, request])
+      }),
+    )
+  })
+
+  it.effect("notifies arrival waiters even when the responder defects", () =>
+    Effect.gen(function* () {
+      const llm = yield* TestLLM.Test
+      const defect = new Error("Broken fixture responder")
+      yield* llm.serve(() => {
+        throw defect
+      })
+      const waiter = yield* llm.wait(1).pipe(Effect.forkChild({ startImmediately: true }))
+      expect(yield* llm.generate(request).pipe(Effect.catchDefect(Effect.succeed))).toBe(defect)
+      yield* Fiber.join(waiter)
+    }),
+  )
+
+  it.effect("builds independent state even when the same layer is provided concurrently", () => {
+    const layer = TestLLM.testLayer()
+    const run = Effect.gen(function* () {
+      const llm = yield* TestLLM.Test
+      expect(yield* llm.requests()).toEqual([])
+      yield* llm.push(TestLLM.text("one", "answer"))
+      expect((yield* LLMClient.generate(request)).text).toBe("one")
+      return yield* llm.requests()
+    }).pipe(Effect.provide(layer))
+    return Effect.gen(function* () {
+      expect(yield* Effect.all([run, run], { concurrency: "unbounded" })).toEqual([[request], [request]])
+    })
+  })
+
+  it.effect("counts concurrent starts on one gate without serializing their response assignment", () =>
+    Effect.gen(function* () {
+      const llm = yield* TestLLM.Test
+      yield* llm.push(TestLLM.text("first", "first"), TestLLM.text("second", "second"))
+      const generate = llm.generate(request)
+      const gate = yield* llm.gate()
+      const first = yield* generate.pipe(Effect.forkChild({ startImmediately: true }))
+      yield* gate.started
+      const second = yield* generate.pipe(Effect.forkChild({ startImmediately: true }))
+      yield* gate.started
+      yield* llm.wait(2)
+      expect(first.pollUnsafe()).toBeUndefined()
+      expect(second.pollUnsafe()).toBeUndefined()
+      yield* gate.release
+      expect((yield* Fiber.join(first)).text).toBe("first")
+      expect((yield* Fiber.join(second)).text).toBe("second")
+    }),
+  )
+
+  it.effect("does not clear a replacement gate when the previous gate is released", () =>
+    Effect.gen(function* () {
+      const llm = yield* TestLLM.Test
+      yield* llm.always(TestLLM.stop())
+      const previous = yield* llm.gate()
+      const first = yield* llm.generate(request).pipe(Effect.forkChild({ startImmediately: true }))
+      yield* previous.started
+      const next = yield* llm.gate()
+      yield* previous.release
+      yield* Fiber.join(first)
+
+      const second = yield* llm.generate(request).pipe(Effect.forkChild({ startImmediately: true }))
+      yield* next.started
+      expect(second.pollUnsafe()).toBeUndefined()
+      yield* next.release
+      yield* Fiber.join(second)
+    }),
+  )
+
+  it.effect("releases a gate when its deliberately narrower scope closes", () =>
+    Effect.gen(function* () {
+      const llm = yield* TestLLM.Test
+      yield* llm.always(TestLLM.stop())
+      // Only the gate is scoped here; its release must happen before the test ends.
+      const run = yield* Effect.scoped(
+        Effect.gen(function* () {
+          const gate = yield* llm.gate()
+          const run = yield* llm.generate(request).pipe(Effect.forkChild({ startImmediately: true }))
+          yield* gate.started
+          return run
+        }),
+      )
+      yield* Fiber.join(run)
+      yield* llm.generate(request)
+      expect(yield* llm.requests()).toHaveLength(2)
+    }),
+  )
+
+  it.effect("keeps an executed response consumed after interruption and permits later requests", () =>
+    Effect.gen(function* () {
+      const llm = yield* TestLLM.Test
+      yield* llm.push(TestLLM.text("interrupted", "first"), TestLLM.text("next", "second"))
+      const gate = yield* llm.gate()
+      const run = yield* llm.generate(request).pipe(Effect.forkChild({ startImmediately: true }))
+      yield* gate.started
+      yield* Fiber.interrupt(run)
+      yield* gate.release
+      expect((yield* llm.generate(request)).text).toBe("next")
+      expect(yield* llm.requests()).toHaveLength(2)
+    }),
+  )
+
+  it.effect("consumes a supplied stream's post-finish tail and runs its finalizer", () =>
+    Effect.gen(function* () {
+      const llm = yield* TestLLM.Test
+      const tail = yield* Latch.make()
+      const release = yield* Latch.make()
+      const finalized = yield* Latch.make()
+      yield* llm.push(
+        Stream.unwrap(
+          Effect.gen(function* () {
+            yield* Effect.addFinalizer(() => finalized.open)
+            return Stream.fromIterable(TestLLM.text("complete", "answer")).pipe(
+              Stream.concat(Stream.fromEffect(tail.open.pipe(Effect.andThen(release.await))).pipe(Stream.drain)),
+            )
+          }),
+        ),
+      )
+      const run = yield* llm.generate(request).pipe(Effect.forkChild({ startImmediately: true }))
+      yield* tail.await
+      expect(run.pollUnsafe()).toBeUndefined()
+      yield* release.open
+      expect((yield* Fiber.join(run)).text).toBe("complete")
+      yield* finalized.await
+    }),
+  )
+
+  it.effect("preserves irregular events, ordinary EOF, typed failures, and responder defects", () =>
+    Effect.gen(function* () {
+      const llm = yield* TestLLM.Test
+      const events = [LLMEvent.textDelta({ id: "without-start", text: "partial" })]
+      yield* llm.push(events, [])
+      expect(yield* Stream.runCollect(llm.stream(request))).toEqual(events)
+      expect(yield* Stream.runCollect(llm.stream(request))).toEqual([])
+
+      const failure = new AIError({ reason: new RateLimitError({ message: "Try later" }) })
+      const observed: LLMEvent[] = []
+      yield* llm.serve(() => TestLLM.failAfter(failure, ...events))
+      expect(
+        yield* llm.stream(request).pipe(
+          Stream.runForEach((event) => Effect.sync(() => observed.push(event))),
+          Effect.flip,
+        ),
+      ).toBe(failure)
+      expect(observed).toEqual(events)
+      expect(yield* llm.generate(request).pipe(Effect.flip)).toBe(failure)
+
+      const defect = new Error("Broken fixture responder")
+      yield* llm.serve(() => {
+        throw defect
+      })
+      expect(yield* llm.generate(request).pipe(Effect.catchDefect(Effect.succeed))).toBe(defect)
+      yield* llm.push(TestLLM.text("recovered", "answer"))
+      expect((yield* llm.generate(request)).text).toBe("recovered")
+    }),
+  )
+
+  it.effect("defects on unexpected requests instead of waiting for a late script", () =>
+    Effect.gen(function* () {
+      const llm = yield* TestLLM.Test
+      const defect = yield* llm.generate(request).pipe(Effect.catchDefect(Effect.succeed))
+      expect(defect).toBeInstanceOf(Error)
+      if (!(defect instanceof Error)) return
+      expect(defect.message).toBe("TestLLM has no response for request 1")
+      expect(yield* llm.requests()).toEqual([request])
+      yield* llm.push(TestLLM.stop())
+      yield* llm.generate(request)
+    }),
+  )
+})

packages/ai/tsconfig.types.json

@@ -5,5 +5,5 @@
     "noEmit": true,
     "rootDir": "."
   },
-  "include": ["test/**/*.types.ts"]
+  "include": ["test/**/*.types.ts", "test/testing.test.ts"]
 }

packages/app/src/session/requests/model.ts

@@ -80,8 +80,8 @@ export function createSessionRequestModel() {
         if (message.type !== "synthetic") return []
         if (message.metadata?.source === "subagent" && typeof message.metadata.childID === "string")
           return [message.metadata.childID]
-        if (message.metadata?.source === "shell" && typeof message.metadata.jobID === "string")
-          return [message.metadata.jobID]
+        if (message.metadata?.source === "shell")
+          return [message.metadata.shellID, message.metadata.jobID].filter((id): id is string => typeof id === "string")
         return []
       }),
     )
@@ -121,6 +121,7 @@ export function createSessionRequestModel() {
         if (part.type !== "tool" || part.name !== "shell" || completed.has(part.id)) return []
         if (part.state.status !== "completed" || part.state.metadata?.status !== "running") return []
         const shellID = part.state.metadata.shellID
+        if (typeof shellID === "string" && completed.has(shellID)) return []
         const command = part.state.input.command
         return [
           {

packages/cli/src/commands/handlers/default.ts

@@ -84,15 +84,12 @@ export default Runtime.handler(Commands, (input) =>
         update: (update) => runPromise(config.update(update)),
       },
       packages: {
-        resolve: (spec, install = true, revision) =>
+        resolve: (spec, install = true) =>
           runPromise(
-            install
-              ? npm.add(spec, { subpaths: ["tui"], revision })
-              : npm.resolve(spec, { subpaths: ["tui"], revision }),
+            (install ? npm.add(spec, { subpaths: ["tui"] }) : npm.resolve(spec, { subpaths: ["tui"] })).pipe(
+              Effect.map((result) => result.entrypoint),
+            ),
           ),
-        check: (spec) => runPromise(npm.check(spec)),
-        update: (spec) => runPromise(npm.update(spec, { subpaths: ["tui"] })),
-        reload: (spec, options) => runPromise(npm.reload(spec, { subpaths: ["tui"], ...options })),
       },
       environment: requestedServer === undefined ? Env.session() : undefined,
       terminalHandoff: () => preflight.finish(),

packages/cli/src/services/fixtures/updater.ts

@@ -1,58 +0,0 @@
-import { NodeFileSystem } from "@effect/platform-node"
-import { Global } from "@opencode-ai/util/global"
-import { AppProcess } from "@opencode-ai/util/process"
-import { Effect, FileSystem, Layer, Stream } from "effect"
-import { ChildProcessSpawner } from "effect/unstable/process"
-import assert from "node:assert/strict"
-import path from "node:path"
-import { Updater } from "../updater"
-
-const latest = { version: "0.0.0-beta-17498" }
-const installs: string[] = []
-
-// This fixture runs in its own process; no real update requests or installs occur.
-globalThis.fetch = Object.assign(async () => Response.json(latest), { preconnect() {} })
-
-await Effect.runPromise(
-  Effect.gen(function* () {
-    const fs = yield* FileSystem.FileSystem
-    const directory = yield* fs.makeTempDirectoryScoped({ prefix: "opencode-updater-" })
-    const dependencies = Layer.mergeAll(
-      Layer.succeed(FileSystem.FileSystem, fs),
-      Layer.succeed(
-        Global.Service,
-        Global.make({ home: directory, config: directory, cache: path.join(directory, "cache") }),
-      ),
-      Layer.succeed(AppProcess.Service, {
-        ...ChildProcessSpawner.make(() => Effect.die("Unexpected process spawn")),
-        runStream: () => Stream.die("Unexpected streaming process"),
-        run: (command) => {
-          assert.equal(command._tag, "StandardCommand")
-          if (command.command === "npm" && command.args[0] === "install") {
-            assert.ok(command.args.includes("--global"))
-            installs.push(command.args.at(-1)!)
-          }
-          return Effect.succeed({
-            command: command.command,
-            exitCode: 0,
-            stdout: Buffer.from(command.command === "npm" ? "@opencode-ai/cli" : ""),
-            stderr: Buffer.alloc(0),
-            stdoutTruncated: false,
-            stderrTruncated: false,
-          })
-        },
-      }),
-    )
-    yield* Effect.gen(function* () {
-      const updater = yield* Updater.Service
-      yield* updater.check()
-      assert.deepEqual(installs, ["@opencode-ai/cli@0.0.0-beta-17498"])
-      yield* updater.check()
-      yield* updater.check()
-      assert.deepEqual(installs, ["@opencode-ai/cli@0.0.0-beta-17498"])
-      latest.version = "0.0.0-beta-17499"
-      yield* updater.check()
-      assert.deepEqual(installs, ["@opencode-ai/cli@0.0.0-beta-17498", "@opencode-ai/cli@0.0.0-beta-17499"])
-    }).pipe(Effect.provide(Updater.layer.pipe(Layer.provide(dependencies))))
-  }).pipe(Effect.scoped, Effect.provide(NodeFileSystem.layer)),
-)

packages/cli/src/services/updater-action.ts

@@ -5,9 +5,9 @@ const maximumComponent = "9007199254740991"
 const versionPattern =
   /^v?([0-9]+)\.([0-9]+)\.([0-9]+)(?:-([0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*))?(?:\+[0-9A-Za-z-]+(?:\.[0-9A-Za-z-]+)*)?$/
 
-export function action(current: string, latest: string, policy: Policy, installed = current): Action {
+export function action(current: string, latest: string, policy: Policy): Action {
   if (policy === false) return "none"
-  const currentVersion = parseReleaseVersion(installed)
+  const currentVersion = parseReleaseVersion(current)
   const latestVersion = parseReleaseVersion(latest)
   if (!currentVersion || !latestVersion || sameRelease(currentVersion, latestVersion)) return "none"
   // Major upgrades are never installed automatically.

packages/cli/src/services/updater.test.ts

@@ -1,30 +1,8 @@
 import { describe, expect, test } from "bun:test"
-import path from "node:path"
 import { action } from "./updater-action"
 import { decodePolicy } from "./updater"
 
 describe("updater", () => {
-  test("remembers successful installs across checks and accepts the next release", async () => {
-    // Isolate compiled version constants and the update endpoint from other tests.
-    const child = Bun.spawn(
-      [
-        process.execPath,
-        "--define",
-        'OPENCODE_VERSION="0.0.0-next-16473"',
-        "--define",
-        'OPENCODE_CHANNEL="beta"',
-        path.join(import.meta.dir, "fixtures/updater.ts"),
-      ],
-      { env: { ...process.env, OPENCODE_DISABLE_AUTOUPDATE: "" }, stdout: "pipe", stderr: "pipe" },
-    )
-    const [code, stdout, stderr] = await Promise.all([
-      child.exited,
-      new Response(child.stdout).text(),
-      new Response(child.stderr).text(),
-    ])
-    expect(code, stdout + stderr).toBe(0)
-  })
-
   test("reads autoupdate from JSONC", () => {
     expect(decodePolicy('{ // preference\n "autoupdate": "notify",\n}')).toBe("notify")
     expect(decodePolicy('{ "autoupdate": false }')).toBe(false)
@@ -54,14 +32,6 @@ describe("updater", () => {
     expect(action("1.2.3", "1.2.3", true)).toBe("none")
   })
 
-  test("skips an installed update but still accepts the next release", () => {
-    const current = "0.0.0-next-16473"
-    const installed = "0.0.0-beta-17498"
-    expect(action(current, installed, true)).toBe("upgrade")
-    expect(action(current, installed, true, installed)).toBe("none")
-    expect(action(current, "0.0.0-beta-17499", true, installed)).toBe("upgrade")
-  })
-
   test("upgrades when latest is lower (rollback)", () => {
     expect(action("1.2.4", "1.2.3", true)).toBe("upgrade")
   })

packages/cli/src/services/updater.ts

@@ -1,7 +1,7 @@
 import { Global } from "@opencode-ai/util/global"
 import { AppProcess } from "@opencode-ai/util/process"
 import { OPENCODE_CHANNEL, OPENCODE_LOCAL, OPENCODE_VERSION } from "../version"
-import { Context, Duration, Effect, FileSystem, Layer, Ref } from "effect"
+import { Context, Duration, Effect, FileSystem, Layer } from "effect"
 import { ChildProcess } from "effect/unstable/process"
 import { parse, type ParseError } from "jsonc-parser"
 import path from "node:path"
@@ -38,7 +38,6 @@ export const layer = Layer.effect(
     const fs = yield* FileSystem.FileSystem
     const global = yield* Global.Service
     const appProcess = yield* AppProcess.Service
-    const installed = yield* Ref.make(OPENCODE_VERSION)
     const channel = OPENCODE_CHANNEL.replace(/[^a-zA-Z0-9._-]/g, "-")
 
     const readPolicy = Effect.fnUntraced(function* () {
@@ -113,20 +112,18 @@ export const layer = Layer.effect(
 
     const upgrade = Effect.fnUntraced(function* (method: Method, version: string) {
       const target = `${packageName}@${version}`
-      const commands: Record<Exclude<Method, "bun" | "curl" | "npm">, string[]> = {
+      const commands: Record<Exclude<Method, "bun" | "curl">, string[]> = {
+        npm: ["npm", "install", "--global", target],
         pnpm: ["pnpm", "add", "--global", `--allow-build=${packageName}`, target],
         yarn: ["yarn", "global", "add", target],
       }
       const result = yield* Effect.scoped(
         Effect.gen(function* () {
-          if (method === "bun" || method === "npm") {
+          if (method === "bun") {
+            // Bun does not prune old versions from its shared package cache.
             yield* fs.makeDirectory(global.cache, { recursive: true })
             const cache = yield* fs.makeTempDirectoryScoped({ directory: global.cache, prefix: "update-" })
-            const command =
-              method === "bun"
-                ? ["bun", "install", "--global", "--trust", "--cache-dir", cache, target]
-                : ["npm", "install", "--global", "--cache", cache, target]
-            return yield* run(command, "5 minutes")
+            return yield* run(["bun", "install", "--global", "--trust", "--cache-dir", cache, target], "5 minutes")
           }
           if (method === "curl") {
             yield* fs.makeDirectory(global.cache, { recursive: true })
@@ -159,19 +156,18 @@ export const layer = Layer.effect(
 
         return yield* Effect.gen(function* () {
           const version = yield* latest()
-          const current = yield* Ref.get(installed)
           yield* Effect.logInfo("update check", {
-            current,
+            current: OPENCODE_VERSION,
             latest: version,
           })
-          const next = action(OPENCODE_VERSION, version, policy, current)
+          const next = action(OPENCODE_VERSION, version, policy)
           if (next === "none") return yield* Effect.logInfo("update check done", { action: "up-to-date" })
-          if (next === "notify") return yield* Effect.logInfo("OpenCode update available", { current, latest: version })
+          if (next === "notify")
+            return yield* Effect.logInfo("OpenCode update available", { current: OPENCODE_VERSION, latest: version })
           const detected = yield* method()
           if (!detected) return yield* Effect.logWarning("automatic update skipped: installation method not found")
           yield* upgrade(detected, version)
-          yield* Ref.set(installed, version)
-          yield* Effect.logInfo("updated OpenCode", { from: current, to: version, method: detected })
+          yield* Effect.logInfo("updated OpenCode", { from: OPENCODE_VERSION, to: version, method: detected })
         })
       },
       Effect.catchCause((cause) => Effect.logWarning("automatic update failed", { cause })),

packages/client/src/effect/api/api.ts

@@ -88,32 +88,8 @@ export type PluginListInput = {
 export type PluginListOutput = { readonly location: Location.Info; readonly data: ReadonlyArray<Plugin.Info> }
 export type PluginListOperation<E = never> = (input?: PluginListInput) => Effect.Effect<PluginListOutput, E>
 
-export type PluginCheckInput = {
-  readonly location?: { readonly directory?: string | undefined; readonly workspace?: string | undefined } | undefined
-  readonly target: string
-}
-export type PluginCheckOutput = { readonly location: Location.Info; readonly data: Plugin.PackageStatus }
-export type PluginCheckOperation<E = never> = (input: PluginCheckInput) => Effect.Effect<PluginCheckOutput, E>
-
-export type PluginUpdateInput = {
-  readonly location?: { readonly directory?: string | undefined; readonly workspace?: string | undefined } | undefined
-  readonly target: string
-}
-export type PluginUpdateOutput = { readonly location: Location.Info; readonly data: ReadonlyArray<Plugin.Info> }
-export type PluginUpdateOperation<E = never> = (input: PluginUpdateInput) => Effect.Effect<PluginUpdateOutput, E>
-
-export type PluginReloadInput = {
-  readonly location?: { readonly directory?: string | undefined; readonly workspace?: string | undefined } | undefined
-  readonly target: string
-}
-export type PluginReloadOutput = { readonly location: Location.Info; readonly data: ReadonlyArray<Plugin.Info> }
-export type PluginReloadOperation<E = never> = (input: PluginReloadInput) => Effect.Effect<PluginReloadOutput, E>
-
 export interface PluginApi<E = never> {
   readonly list: PluginListOperation<E>
-  readonly check: PluginCheckOperation<E>
-  readonly update: PluginUpdateOperation<E>
-  readonly reload: PluginReloadOperation<E>
 }
 
 export type SessionListInput = {
@@ -1663,6 +1639,23 @@ export interface PtyApi<E = never> {
   readonly connect: { readonly token: PtyConnectTokenOperation<E> }
 }
 
+export type ExperimentalPersistentPtyReadInput = { readonly sessionID: Session.ID; readonly lines?: number | undefined }
+export type ExperimentalPersistentPtyReadOutput = {
+  readonly ptyID: Pty.ID
+  readonly title: string
+  readonly cwd: string
+  readonly foregroundProcess: string | null
+  readonly screen: {
+    readonly text: string
+    readonly cols: number
+    readonly rows: number
+    readonly cursor: { readonly x: number; readonly y: number }
+  }
+} | null
+export type ExperimentalPersistentPtyReadOperation<E = never> = (
+  input: ExperimentalPersistentPtyReadInput,
+) => Effect.Effect<ExperimentalPersistentPtyReadOutput, E>
+
 export type ExperimentalPersistentPtyListInput = { readonly sessionID: Session.ID }
 export type ExperimentalPersistentPtyListOutput = ReadonlyArray<{
   readonly id: Pty.ID
@@ -1811,6 +1804,7 @@ export type ExperimentalPersistentPtyConnectTokenOperation<E = never> = (
 
 export interface ExperimentalApi<E = never> {
   readonly persistentPty: {
+    readonly read: ExperimentalPersistentPtyReadOperation<E>
     readonly list: ExperimentalPersistentPtyListOperation<E>
     readonly create: ExperimentalPersistentPtyCreateOperation<E>
     readonly shutdown: ExperimentalPersistentPtyShutdownOperation<E>

packages/client/src/effect/generated/client.ts

@@ -15,12 +15,6 @@ import type {
   AgentGetOutput,
   PluginListInput,
   PluginListOutput,
-  PluginCheckInput,
-  PluginCheckOutput,
-  PluginUpdateInput,
-  PluginUpdateOutput,
-  PluginReloadInput,
-  PluginReloadOutput,
   SessionListInput,
   SessionListOutput,
   SessionStatsInput,
@@ -204,6 +198,8 @@ import type {
   PtyRemoveOutput,
   PtyConnectTokenInput,
   PtyConnectTokenOutput,
+  ExperimentalPersistentPtyReadInput,
+  ExperimentalPersistentPtyReadOutput,
   ExperimentalPersistentPtyListInput,
   ExperimentalPersistentPtyListOutput,
   ExperimentalPersistentPtyCreateInput,
@@ -322,33 +318,7 @@ const EndpointPluginList = (raw: RawClient["server.plugin"]) => (input?: PluginL
     raw["plugin.list"]({ query: { location: input?.["location"] } }).pipe(Effect.mapError(mapClientError)),
   )
 
-const EndpointPluginCheck = (raw: RawClient["server.plugin"]) => (input: PluginCheckInput) =>
-  preserveEffect<PluginCheckOutput>()(
-    raw["plugin.check"]({ query: { location: input["location"] }, payload: { target: input["target"] } }).pipe(
-      Effect.mapError(mapClientError),
-    ),
-  )
-
-const EndpointPluginUpdate = (raw: RawClient["server.plugin"]) => (input: PluginUpdateInput) =>
-  preserveEffect<PluginUpdateOutput>()(
-    raw["plugin.update"]({ query: { location: input["location"] }, payload: { target: input["target"] } }).pipe(
-      Effect.mapError(mapClientError),
-    ),
-  )
-
-const EndpointPluginReload = (raw: RawClient["server.plugin"]) => (input: PluginReloadInput) =>
-  preserveEffect<PluginReloadOutput>()(
-    raw["plugin.reload"]({ query: { location: input["location"] }, payload: { target: input["target"] } }).pipe(
-      Effect.mapError(mapClientError),
-    ),
-  )
-
-const adaptGroupPlugin = (raw: RawClient["server.plugin"]) => ({
-  list: EndpointPluginList(raw),
-  check: EndpointPluginCheck(raw),
-  update: EndpointPluginUpdate(raw),
-  reload: EndpointPluginReload(raw),
-})
+const adaptGroupPlugin = (raw: RawClient["server.plugin"]) => ({ list: EndpointPluginList(raw) })
 
 const EndpointSessionList = (raw: RawClient["server.session"]) => (input?: SessionListInput) =>
   preserveEffect<SessionListOutput>()(
@@ -1266,6 +1236,15 @@ const adaptGroupPty = (raw: RawClient["server.pty"]) => ({
   connect: { token: EndpointPtyConnectToken(raw) },
 })
 
+const EndpointExperimentalPersistentPtyRead =
+  (raw: RawClient["server.experimental"]) => (input: ExperimentalPersistentPtyReadInput) =>
+    preserveEffect<ExperimentalPersistentPtyReadOutput>()(
+      raw["persistentPty.read"]({ params: { sessionID: input["sessionID"] }, query: { lines: input["lines"] } }).pipe(
+        Effect.mapError(mapClientError),
+        Effect.map((value) => value.data),
+      ),
+    )
+
 const EndpointExperimentalPersistentPtyList =
   (raw: RawClient["server.experimental"]) => (input: ExperimentalPersistentPtyListInput) =>
     preserveEffect<ExperimentalPersistentPtyListOutput>()(
@@ -1354,6 +1333,7 @@ const EndpointExperimentalPersistentPtyConnectToken =
 
 const adaptGroupExperimental = (raw: RawClient["server.experimental"]) => ({
   persistentPty: {
+    read: EndpointExperimentalPersistentPtyRead(raw),
     list: EndpointExperimentalPersistentPtyList(raw),
     create: EndpointExperimentalPersistentPtyCreate(raw),
     shutdown: EndpointExperimentalPersistentPtyShutdown(raw),

packages/client/src/promise/generated/client.ts

@@ -9,12 +9,6 @@ import type {
   AgentGetOutput,
   PluginListInput,
   PluginListOutput,
-  PluginCheckInput,
-  PluginCheckOutput,
-  PluginUpdateInput,
-  PluginUpdateOutput,
-  PluginReloadInput,
-  PluginReloadOutput,
   SessionListInput,
   SessionListOutput,
   SessionStatsInput,
@@ -200,6 +194,8 @@ import type {
   PtyRemoveOutput,
   PtyConnectTokenInput,
   PtyConnectTokenOutput,
+  ExperimentalPersistentPtyReadInput,
+  ExperimentalPersistentPtyReadOutput,
   ExperimentalPersistentPtyListInput,
   ExperimentalPersistentPtyListOutput,
   ExperimentalPersistentPtyCreateInput,
@@ -466,45 +462,6 @@ export function make(options: ClientOptions) {
           },
           requestOptions,
         ),
-      check: (input: PluginCheckInput, requestOptions?: RequestOptions) =>
-        request<PluginCheckOutput>(
-          {
-            method: "POST",
-            path: `/api/plugin/check`,
-            query: { location: input["location"] },
-            body: { target: input["target"] },
-            successStatus: 200,
-            declaredStatuses: [400, 401],
-            empty: false,
-          },
-          requestOptions,
-        ),
-      update: (input: PluginUpdateInput, requestOptions?: RequestOptions) =>
-        request<PluginUpdateOutput>(
-          {
-            method: "POST",
-            path: `/api/plugin/update`,
-            query: { location: input["location"] },
-            body: { target: input["target"] },
-            successStatus: 200,
-            declaredStatuses: [400, 401],
-            empty: false,
-          },
-          requestOptions,
-        ),
-      reload: (input: PluginReloadInput, requestOptions?: RequestOptions) =>
-        request<PluginReloadOutput>(
-          {
-            method: "POST",
-            path: `/api/plugin/reload`,
-            query: { location: input["location"] },
-            body: { target: input["target"] },
-            successStatus: 200,
-            declaredStatuses: [400, 401],
-            empty: false,
-          },
-          requestOptions,
-        ),
     },
     session: {
       list: (input?: SessionListInput, requestOptions?: RequestOptions) =>
@@ -1410,7 +1367,7 @@ export function make(options: ClientOptions) {
             method: "GET",
             path: `/api/session/${encodeURIComponent(input.sessionID)}/form`,
             successStatus: 200,
-            declaredStatuses: [404, 400, 401],
+            declaredStatuses: [404, 401, 400],
             empty: false,
           },
           requestOptions,
@@ -1539,7 +1496,7 @@ export function make(options: ClientOptions) {
             method: "GET",
             path: `/api/session/${encodeURIComponent(input.sessionID)}/permission`,
             successStatus: 200,
-            declaredStatuses: [404, 400, 401],
+            declaredStatuses: [404, 401, 400],
             empty: false,
           },
           requestOptions,
@@ -1729,6 +1686,18 @@ export function make(options: ClientOptions) {
     },
     experimental: {
       persistentPty: {
+        read: (input: ExperimentalPersistentPtyReadInput, requestOptions?: RequestOptions) =>
+          request<{ readonly data: ExperimentalPersistentPtyReadOutput }>(
+            {
+              method: "GET",
+              path: `/api/experimental/session/${encodeURIComponent(input.sessionID)}/terminal/read`,
+              query: { lines: input["lines"] },
+              successStatus: 200,
+              declaredStatuses: [503, 401, 400],
+              empty: false,
+            },
+            requestOptions,
+          ).then((value) => value.data),
         list: (input: ExperimentalPersistentPtyListInput, requestOptions?: RequestOptions) =>
           request<{ readonly data: ExperimentalPersistentPtyListOutput }>(
             {

packages/client/src/promise/generated/types.ts

@@ -16,8 +16,6 @@ export type PluginSource =
   | { type: "local"; path: string }
   | { type: "sdk" }
 
-export type PluginPackageStatus = { installed?: string; available?: string; mutable: boolean }
-
 export type SessionForkBoundary = { type: "before"; messageID: string } | { type: "through"; messageID: string }
 
 export type MoneyUSD = number
@@ -380,6 +378,14 @@ export type SessionStatus =
 
 export type PtyTicketConnectToken = { ticket: string; expires_in: number }
 
+export type PersistentPtyReadResult = {
+  ptyID: string
+  title: string
+  cwd: string
+  foregroundProcess: string | null
+  screen: { text: string; cols: number; rows: number; cursor: { x: number; y: number } }
+}
+
 export type PersistentPtyHandoff = { directory: string; instanceID: string; ticket: string; expiresAt: number }
 
 export type ShellInfo1 = {
@@ -435,24 +441,8 @@ export type ProviderRequest = {
 export type PermissionRule = { action: string; resource: string; effect: PermissionEffect }
 
 export type PluginInfo =
-  | {
-      id: string
-      source: PluginSource
-      status: "active"
-      tui: boolean
-      revision?: string
-      generation?: string
-      error?: string
-    }
-  | {
-      id?: string
-      source: PluginSource
-      status: "failed"
-      error: string
-      tui: boolean
-      revision?: string
-      generation?: string
-    }
+  | { id: string; source: PluginSource; status: "active"; tui: boolean }
+  | { id?: string; source: PluginSource; status: "failed"; error: string; tui: boolean }
 
 export type SessionMessageLocationSwitched = {
   id: string
@@ -2348,10 +2338,6 @@ export type AgentNotFoundError = {
 export const isAgentNotFoundError = (value: unknown): value is AgentNotFoundError =>
   typeof value === "object" && value !== null && "_tag" in value && value["_tag"] === "AgentNotFoundError"
 
-export type PluginOperationError = { readonly _tag: "PluginOperationError"; readonly message: string }
-export const isPluginOperationError = (value: unknown): value is PluginOperationError =>
-  typeof value === "object" && value !== null && "_tag" in value && value["_tag"] === "PluginOperationError"
-
 export type InvalidCursorError = { readonly _tag: "InvalidCursorError"; readonly message: string }
 export const isInvalidCursorError = (value: unknown): value is InvalidCursorError =>
   typeof value === "object" && value !== null && "_tag" in value && value["_tag"] === "InvalidCursorError"
@@ -2562,42 +2548,6 @@ export type PluginListOutput = {
   data: Array<PluginInfo>
 }
 
-export type PluginCheckInput = {
-  readonly location?: {
-    readonly location?: { readonly directory?: string | undefined; readonly workspace?: string | undefined } | undefined
-  }["location"]
-  readonly target: { readonly target: string }["target"]
-}
-
-export type PluginCheckOutput = {
-  location: { directory: string; workspaceID?: string; project: { id: string; directory: string; canonical: string } }
-  data: PluginPackageStatus
-}
-
-export type PluginUpdateInput = {
-  readonly location?: {
-    readonly location?: { readonly directory?: string | undefined; readonly workspace?: string | undefined } | undefined
-  }["location"]
-  readonly target: { readonly target: string }["target"]
-}
-
-export type PluginUpdateOutput = {
-  location: { directory: string; workspaceID?: string; project: { id: string; directory: string; canonical: string } }
-  data: Array<PluginInfo>
-}
-
-export type PluginReloadInput = {
-  readonly location?: {
-    readonly location?: { readonly directory?: string | undefined; readonly workspace?: string | undefined } | undefined
-  }["location"]
-  readonly target: { readonly target: string }["target"]
-}
-
-export type PluginReloadOutput = {
-  location: { directory: string; workspaceID?: string; project: { id: string; directory: string; canonical: string } }
-  data: Array<PluginInfo>
-}
-
 export type SessionListInput = {
   readonly workspace?: {
     readonly workspace?: string | undefined
@@ -5827,6 +5777,13 @@ export type PtyConnectTokenOutput = {
   data: PtyTicketConnectToken
 }
 
+export type ExperimentalPersistentPtyReadInput = {
+  readonly sessionID: { readonly sessionID: string }["sessionID"]
+  readonly lines?: { readonly lines?: number | undefined }["lines"]
+}
+
+export type ExperimentalPersistentPtyReadOutput = { data: PersistentPtyReadResult | null }["data"]
+
 export type ExperimentalPersistentPtyListInput = { readonly sessionID: { readonly sessionID: string }["sessionID"] }
 
 export type ExperimentalPersistentPtyListOutput = { data: Array<PersistentPtyInfo> }["data"]

packages/client/src/solid/data.ts

@@ -29,6 +29,7 @@ import type {
   SessionMessageAssistantTool,
   SessionInfo,
   SessionInboxInfo,
+  SessionInboxCompaction,
   ShellInfo,
   SkillInfo,
   VcsInfo,
@@ -215,8 +216,10 @@ export function createData(config: CreateDataInput) {
   )
   const messageIndex = new Map<string, Map<string, number>>()
   const sync = createSync()
+  let activeUpdates: Map<string, DataSessionStatus | undefined> | undefined
 
   function setSessionActive(sessionID: string, status: DataSessionStatus) {
+    activeUpdates?.set(sessionID, status)
     setStore("session", "active", sessionID, status)
   }
 
@@ -282,12 +285,11 @@ export function createData(config: CreateDataInput) {
     setStore("session", "pending", sessionID, index, { ...item, delivery })
   }
 
-  // Inbox IDs of optimistic prompt admissions still awaiting their durable
-  // echo. This is the one deliberate piece of in-flight bookkeeping in this
-  // layer: it exists so a rejection only rolls back rows the server never
-  // acknowledged, and so a concurrent pending re-fetch cannot wipe a row the
-  // server does not know about yet. Entries clear on the enqueued echo or on
-  // rollback — not on POST success, which typically precedes the echo.
+  // Inbox IDs of optimistic admissions awaiting acknowledgement, so rejection
+  // only rolls back unacknowledged rows and a pending re-fetch cannot wipe a
+  // row the server does not know about yet. Prompts clear on their durable
+  // echo, positive pending read, or rollback; compactions also reconcile the
+  // POST's canonical ID.
   const outbox = new Set<string>()
 
   // Session IDs of optimistic create admissions still awaiting acknowledgement
@@ -301,11 +303,13 @@ export function createData(config: CreateDataInput) {
   // to exist server-side instead of failing with "not found".
   const creating = new Map<string, Promise<unknown>>()
 
-  // Per-session send chain: prompts must be admitted in submission order,
-  // and HTTP gives no ordering across concurrent POSTs. Each prompt waits
-  // for the previous prompt's POST (settled, so one failure does not block
-  // the next) before sending its own.
+  // Per-session send chain: prompts and compactions must be admitted in
+  // submission order. Each waits for the previous POST to settle, so one
+  // failure does not block the next.
   const sending = new Map<string, Promise<unknown>>()
+  const messageLoads = new Map<string, Promise<unknown>>()
+  const compacting = new Map<string, { id: string; observed: Set<string>; request: Promise<SessionInboxCompaction> }>()
+  onCleanup(() => compacting.clear())
 
   // Register `promise` under `key` until it settles. A later registration
   // replaces an earlier one; settlement only clears its own entry.
@@ -317,9 +321,24 @@ export function createData(config: CreateDataInput) {
     void promise.then(settle, settle)
   }
 
+  // Capture creation before settlement clears its entry, so dependent RPCs still see a failed create.
+  function sendAdmission<Value>(sessionID: string, send: () => Promise<Value>, gate?: Promise<unknown>) {
+    const created = creating.get(sessionID)
+    const previous = sending.get(sessionID)
+    const request = Promise.resolve()
+      .then(() => Promise.all([gate, created, previous]))
+      .then(send)
+    track(
+      sending,
+      sessionID,
+      request.catch(() => undefined),
+    )
+    return request
+  }
+
   // Upsert an admitted inbox item into pending, input, and (for user and
   // synthetic items) the visible transcript. Used by the inbox.enqueued
-  // handler and by optimistic prompt admission; the upsert is what reconciles
+  // handler and by optimistic admission; the upsert is what reconciles
   // the durable echo with an optimistic placeholder — the durable payload and
   // times replace the client's guess.
   function admitLocal(item: SessionInboxInfo) {
@@ -332,6 +351,7 @@ export function createData(config: CreateDataInput) {
         item.sessionID,
         at < 0 ? [...pending, item] : pending.map((entry, index) => (index === at ? item : entry)),
       )
+      if (item.type === "compaction") return
       const input = store.session.input[item.sessionID] ?? []
       if (!input.includes(item.id)) setStore("session", "input", item.sessionID, [...input, item.id])
       materializeInboxMessage(item)
@@ -473,6 +493,7 @@ export function createData(config: CreateDataInput) {
   }
 
   function removeSession(sessionID: string) {
+    activeUpdates?.set(sessionID, undefined)
     store.session.pending[sessionID]?.forEach((item) => outbox.delete(item.id))
     messageIndex.delete(sessionID)
     sync.invalidate(`session:${sessionID}`)
@@ -504,17 +525,25 @@ export function createData(config: CreateDataInput) {
 
   function handleEvent(event: OpenCodeEvent) {
     switch (event.type) {
-      case "server.connected":
+      case "server.connected": {
+        const updates = new Map<string, DataSessionStatus | undefined>()
+        activeUpdates = updates
         void api()
           .session.active()
           .then((active) => {
-            setStore(
-              "session",
-              "active",
-              reconcile(Object.fromEntries(Object.keys(active).map((sessionID) => [sessionID, "running" as const]))),
-            )
+            if (activeUpdates !== updates) return
+            // Lifecycle events received during hydration supersede the snapshot.
+            const snapshot = new Map<string, DataSessionStatus>(Object.keys(active).map((id) => [id, "running"]))
+            updates.forEach((status, id) => {
+              if (status === undefined) return snapshot.delete(id)
+              snapshot.set(id, status)
+            })
+            activeUpdates = undefined
+            setStore("session", "active", reconcile(Object.fromEntries(snapshot)))
+          })
+          .catch(() => {
+            if (activeUpdates === updates) activeUpdates = undefined
           })
-          .catch(() => undefined)
         void api()
           .location.get({ location: locationQuery(defaultLocation()) })
           .then((location) => {
@@ -525,6 +554,7 @@ export function createData(config: CreateDataInput) {
         void result.location.vcs.sync().catch((error) => console.error("Failed to preload VCS info", error))
         void result.project.sync().catch((error) => console.error("Failed to preload projects", error))
         return
+      }
       case "project.updated":
         setStore("project", "info", event.data.id, reconcile(event.data))
         return
@@ -656,6 +686,7 @@ export function createData(config: CreateDataInput) {
           draft.push(existing)
           message.reindex(draft, index, position)
         })
+        compacting.get(event.data.sessionID)?.observed.add(event.data.inboxID)
         return
       }
       case "session.inbox.delivery.changed":
@@ -663,6 +694,7 @@ export function createData(config: CreateDataInput) {
         return
       case "session.inbox.cancelled": {
         retractLocal(event.data.sessionID, event.data.inboxID)
+        compacting.get(event.data.sessionID)?.observed.add(event.data.inboxID)
         return
       }
       case "session.inbox.enqueued": {
@@ -673,6 +705,12 @@ export function createData(config: CreateDataInput) {
           timeCreated: event.created,
           ...event.data.item,
         })
+        if (event.data.item.type === "compaction") {
+          const active = compacting.get(event.data.sessionID)
+          active?.observed.add(event.data.inboxID)
+          if (active && active.id !== event.data.inboxID && outbox.delete(active.id))
+            removePending(event.data.sessionID, active.id)
+        }
         return
       }
       case "session.instructions.updated":
@@ -971,6 +1009,7 @@ export function createData(config: CreateDataInput) {
             time: { created: event.created },
           })
         })
+        if (event.data.inputID) compacting.get(event.data.sessionID)?.observed.add(event.data.inputID)
         return
       case "session.execution.succeeded":
       case "session.execution.failed":
@@ -1068,6 +1107,7 @@ export function createData(config: CreateDataInput) {
           }
           message.append(draft, index, failed)
         })
+        if (event.data.inputID) compacting.get(event.data.sessionID)?.observed.add(event.data.inputID)
         return
       case "permission.asked":
         if (store.session.permission[event.data.sessionID]?.some((request) => request.id === event.data.id)) return
@@ -1254,12 +1294,17 @@ export function createData(config: CreateDataInput) {
         sync(sessionID: string) {
           return sync.run(`session.pending:${sessionID}`, async () => {
             const pending = await api().session.inbox.list({ sessionID })
+            // A positive read acknowledges admission even when its SSE echo is delayed.
+            pending.forEach((item) => outbox.delete(item.id))
+            // Compactions also coalesce by Session, not just by the proposed ID.
+            if (pending.some((item) => item.type === "compaction"))
+              store.session.pending[sessionID]
+                ?.filter((item) => item.type === "compaction")
+                .forEach((item) => outbox.delete(item.id))
             // Keep optimistic rows still awaiting their echo: this fetch may
             // have raced ahead of an in-flight admission the server does not
             // know about yet.
-            const inflight = (store.session.pending[sessionID] ?? []).filter(
-              (item) => outbox.has(item.id) && !pending.some((row) => row.id === item.id),
-            )
+            const inflight = (store.session.pending[sessionID] ?? []).filter((item) => outbox.has(item.id))
             const merged = inflight.length === 0 ? pending : [...pending, ...inflight]
             batch(() => {
               setStore("session", "pending", sessionID, reconcile(merged))
@@ -1333,13 +1378,56 @@ export function createData(config: CreateDataInput) {
         if (fresh) track(creating, id, request)
         return { id, request }
       },
+      compact(input: { sessionID: string; model?: ModelRef }) {
+        const active = compacting.get(input.sessionID)
+        if (active) return active.request
+        // A known pending control ID may be consumed while setup waits. Propose
+        // a fresh ID and let the server coalesce, without duplicating its row.
+        const id = SessionMessage.ID.create()
+        if (!store.session.pending[input.sessionID]?.some((item) => item.type === "compaction")) {
+          outbox.add(id)
+          admitLocal({
+            id,
+            sessionID: input.sessionID,
+            timeCreated: Date.now(),
+            type: "compaction",
+            delivery: "steer",
+            payload: {},
+          })
+        }
+        // Compaction admission can coalesce onto a different ID. Retire the
+        // speculative row on an echo, and remember consumed IDs until the POST
+        // settles so its older response cannot resurrect a queued row.
+        const observed = new Set<string>()
+        const request = sendAdmission(input.sessionID, async () => {
+          if (input.model) await api().session.switchModel({ sessionID: input.sessionID, model: input.model })
+          return api().session.compact({ sessionID: input.sessionID, id })
+        })
+          .then((item) => {
+            batch(() => {
+              outbox.delete(id)
+              if (item.id !== id) removePending(input.sessionID, id)
+              if (!observed.has(item.id) && !messageIndex.get(input.sessionID)?.has(item.id)) admitLocal(item)
+            })
+            return item
+          })
+          .catch((error) => {
+            if (outbox.delete(id)) removePending(input.sessionID, id)
+            throw error
+          })
+          .finally(() => {
+            if (compacting.get(input.sessionID)?.request === request) compacting.delete(input.sessionID)
+          })
+        compacting.set(input.sessionID, { id, observed, request })
+        return request
+      },
       // Optimistic prompt admission: render the prompt immediately under a
       // client-minted ID, send it, and let the durable inbox.enqueued echo
       // upsert that same ID with the server's payload. Server admission is
       // idempotent per ID, so retrying with the identical payload cannot
       // double-admit.
-      prompt(input: SessionPromptInput & { gate?: Promise<unknown> }) {
-        const { gate, ...request } = input
+      prompt(input: SessionPromptInput & { gate?: Promise<unknown>; prepare?: () => Promise<unknown> }) {
+        const { gate, prepare, ...request } = input
         const id = request.id ?? SessionMessage.ID.create()
         // A retry may reuse an ID that is already rendered — and possibly
         // already durable. Admit optimistically only for new IDs so a failed
@@ -1365,25 +1453,15 @@ export function createData(config: CreateDataInput) {
             },
           })
         }
-        // Wrapped so even a synchronous client failure reaches the rollback.
-        // The POST additionally waits for the caller's gate, for any
-        // in-flight optimistic create of this session, and for the previous
-        // prompt's POST: the row renders now, the send happens once the
-        // session exists server-side and earlier prompts are admitted.
-        const previous = sending.get(request.sessionID)
-        const send = Promise.resolve()
-          .then(() => Promise.all([gate, creating.get(request.sessionID), previous]))
-          .then(() => api().session.prompt({ ...request, id }))
-        track(
-          sending,
+        return sendAdmission(
           request.sessionID,
-          send.then(
-            () => undefined,
-            () => undefined,
-          ),
-        )
-        return send.catch((error) => {
-          // Roll back only rows this call admitted and the echo has not
+          async () => {
+            await prepare?.()
+            return api().session.prompt({ ...request, id })
+          },
+          gate,
+        ).catch((error) => {
+          // Roll back only rows this call admitted and the server has not
           // acknowledged: anything else is server state.
           if (fresh && outbox.delete(id)) retractLocal(request.sessionID, id)
           throw error
@@ -1452,20 +1530,70 @@ export function createData(config: CreateDataInput) {
         loading(sessionID: string) {
           return store.session.messageLoading[sessionID] ?? false
         },
-        async loadMore(sessionID: string) {
+        async loadMore(
+          sessionID: string,
+          options?: {
+            all?: boolean
+            signal?: AbortSignal
+            /** Runs synchronously inside the store-publication batch. */
+            beforePublish?: () => void
+          },
+        ) {
+          const signal = options?.signal
+          if (signal?.aborted) return
+          while (messageLoads.has(sessionID)) {
+            const published = await (() => {
+              const pending = messageLoads.get(sessionID)
+              if (!signal) return pending
+              const aborted = Promise.withResolvers<void>()
+              const cancel = () => aborted.resolve()
+              signal.addEventListener("abort", cancel, { once: true })
+              return Promise.race([pending, aborted.promise])
+                .catch((error) => {
+                  if (!signal.aborted) throw error
+                })
+                .finally(() => signal.removeEventListener("abort", cancel))
+            })()
+            if ((!options?.all && published) || signal?.aborted) return
+          }
           const cursor = store.session.messageCursor[sessionID]
-          if (!cursor || store.session.messageLoading[sessionID]) return
+          if (!cursor || signal?.aborted) return
           setStore("session", "messageLoading", sessionID, true)
-          const response = await api()
-            .message.list({ sessionID, limit: messagePageLimit, cursor })
+          const request = (async () => {
+            const fetched: SessionMessageInfo[] = []
+            let next: string | undefined = cursor
+            do {
+              const response = await api().message.list(
+                {
+                  sessionID,
+                  limit: options?.all ? 200 : messagePageLimit,
+                  cursor: next,
+                },
+                { signal },
+              )
+              if (signal?.aborted) return
+              fetched.push(...response.data)
+              next = response.cursor.next ?? undefined
+              if (!options?.all) break
+            } while (next)
+            // A jump through history publishes once, not once per page of offscreen messages.
+            const existing = store.session.message[sessionID] ?? []
+            const ids = new Set(existing.map((item) => item.id))
+            const messages = [...fetched.reverse().filter((item) => !ids.has(item.id)), ...existing]
+            batch(() => {
+              options?.beforePublish?.()
+              messageIndex.set(sessionID, new Map(messages.map((item, position) => [item.id, position])))
+              setStore("session", "message", sessionID, reconcile(messages))
+              setStore("session", "messageCursor", sessionID, next)
+            })
+            return true
+          })()
+            .catch((error) => {
+              if (!signal?.aborted) throw error
+            })
             .finally(() => setStore("session", "messageLoading", sessionID, false))
-          const older = response.data.toReversed()
-          const existing = store.session.message[sessionID] ?? []
-          const ids = new Set(existing.map((item) => item.id))
-          const messages = [...older.filter((item) => !ids.has(item.id)), ...existing]
-          messageIndex.set(sessionID, new Map(messages.map((item, position) => [item.id, position])))
-          setStore("session", "message", sessionID, reconcile(messages))
-          setStore("session", "messageCursor", sessionID, response.cursor.next ?? undefined)
+          track(messageLoads, sessionID, request)
+          await request
         },
         invalidate(sessionID: string) {
           sync.invalidate(`session.message:${sessionID}`)

packages/client/test/promise.test.ts

@@ -50,6 +50,8 @@ test("exposes every standard HTTP API group", () => {
   expect(Object.keys(client.vcs)).toEqual(["get", "status", "branches", "diff"])
   expect(Object.keys(client.pty)).toEqual(["list", "create", "get", "update", "remove", "connect"])
   expect(Object.keys(client.pty.connect)).toEqual(["token"])
+  expect(Object.keys(client.experimental)).toEqual(["persistentPty"])
+  expect(client.experimental.persistentPty.read).toBeFunction()
   expect(Object.keys(client.shell)).toEqual(["list", "create", "get", "timeout", "output", "remove"])
   expect(Object.keys(client.project)).toEqual(["list", "update", "current"])
   expect(Object.keys(client.worktree)).toEqual(["list", "create", "remove", "refresh"])

packages/client/test/solid-compaction.test.ts

@@ -0,0 +1,400 @@
+import { expect, test } from "bun:test"
+import { createRoot } from "solid-js"
+import { createData, type CreateDataInput } from "../src/solid"
+import { OpenCode, type OpenCodeEvent, type SessionInboxCompaction, type SessionInboxInfo } from "../src/promise"
+
+test("admits compaction before model setup and serializes the following prompt", async () => {
+  using fixture = setup()
+  const compact = fixture.data.session.compact({ sessionID, model: { providerID: "demo", id: "model" } })
+  const proposed = fixture.data.session.pending.list(sessionID)[0]
+  expect(proposed).toMatchObject({ type: "compaction", sessionID })
+  expect(fixture.calls).toEqual([])
+  expect(fixture.data.session.message.list(sessionID)).toEqual([])
+  expect(fixture.data.session.status(sessionID)).toBe("idle")
+
+  const prompt = fixture.data.session.prompt({ sessionID, text: "Follow up" })
+  expect(fixture.data.session.message.list(sessionID)).toMatchObject([{ type: "user", text: "Follow up" }])
+  await wait(() => fixture.calls.length === 1)
+  expect(fixture.calls).toEqual(["model"])
+  fixture.model.resolve()
+  await wait(() => fixture.calls.length === 2)
+  expect(fixture.calls).toEqual(["model", "compact"])
+  fixture.response.resolve(Response.json({ data: item(proposed.id) }))
+  await Promise.all([compact, prompt])
+  expect(fixture.calls).toEqual(["model", "compact", "prompt"])
+  expect(fixture.proposals).toEqual([proposed.id])
+})
+
+test("coalesces duplicate gestures until the admission request settles", async () => {
+  using fixture = setup()
+  const first = fixture.data.session.compact({ sessionID })
+  expect(fixture.data.session.compact({ sessionID })).toBe(first)
+  expect(fixture.data.session.pending.list(sessionID)).toHaveLength(1)
+  await wait(() => fixture.calls.length === 1)
+  fixture.response.resolve(Response.json({ data: item("msg_canonical") }))
+  await first
+  expect(fixture.calls).toEqual(["compact"])
+  const next = fixture.data.session.compact({ sessionID })
+  expect(next).not.toBe(first)
+  await next
+  expect(fixture.calls).toEqual(["compact", "compact"])
+  expect(new Set(fixture.proposals).size).toBe(2)
+  expect(fixture.proposals).not.toContain("msg_canonical")
+})
+
+test("substitutes the canonical response ID and reconciles its later echo", async () => {
+  using fixture = setup()
+  const request = fixture.data.session.compact({ sessionID })
+  const proposed = fixture.data.session.pending.list(sessionID)[0].id
+  await fixture.data.session.pending.sync(sessionID)
+  expect(fixture.data.session.pending.list(sessionID).map((row) => row.id)).toEqual([proposed])
+  fixture.response.resolve(Response.json({ data: item("msg_canonical") }))
+  await request
+  expect(fixture.data.session.pending.list(sessionID)).toEqual([item("msg_canonical")])
+  fixture.enqueue("msg_canonical", 20)
+  expect(fixture.data.session.pending.list(sessionID)).toEqual([item("msg_canonical", 20)])
+  expect(fixture.data.session.input.list(sessionID)).toEqual([])
+})
+
+test.each(["proposed", "canonical"])("adopts the %s echo before the response without duplicating it", async (kind) => {
+  using fixture = setup()
+  const request = fixture.data.session.compact({ sessionID })
+  const id = kind === "proposed" ? fixture.data.session.pending.list(sessionID)[0].id : "msg_canonical"
+  fixture.enqueue(id, 20)
+  expect(fixture.data.session.pending.list(sessionID)).toEqual([item(id, 20)])
+  fixture.response.resolve(Response.json({ data: item(id) }))
+  await request
+  expect(fixture.data.session.pending.list(sessionID)).toEqual([item(id, 20)])
+})
+
+test.each(["started", "cancelled", "failed"])(
+  "does not resurrect a canonical item already %s before the response",
+  async (kind) => {
+    using fixture = setup()
+    const request = fixture.data.session.compact({ sessionID })
+    fixture.enqueue("msg_canonical")
+    if (kind === "started")
+      fixture.emit({
+        ...event,
+        type: "session.compaction.started",
+        data: { sessionID, inputID: "msg_canonical", reason: "manual" },
+      })
+    if (kind === "cancelled")
+      fixture.emit({ ...event, type: "session.inbox.cancelled", data: { sessionID, inboxID: "msg_canonical" } })
+    if (kind === "failed")
+      fixture.emit({
+        ...event,
+        type: "session.compaction.failed",
+        data: {
+          sessionID,
+          inputID: "msg_canonical",
+          reason: "manual",
+          error: { type: "aborted", message: "Cancelled" },
+        },
+      })
+    expect(fixture.data.session.pending.list(sessionID)).toEqual([])
+    fixture.response.resolve(Response.json({ data: item("msg_canonical") }))
+    await request
+    expect(fixture.data.session.pending.list(sessionID)).toEqual([])
+    if (kind === "started") {
+      expect(fixture.data.session.message.list(sessionID)).toMatchObject([{ type: "compaction", status: "running" }])
+      fixture.emit({
+        ...event,
+        type: "session.compaction.ended",
+        data: { sessionID, reason: "manual", text: "Summary", recent: "Recent" },
+      })
+      expect(fixture.data.session.message.list(sessionID)).toMatchObject([
+        { type: "compaction", status: "completed", summary: "Summary" },
+      ])
+    }
+  },
+)
+
+test.each(["model", "compact"])("rolls back a rejected %s RPC and releases the following prompt", async (rpc) => {
+  using fixture = setup()
+  const request = fixture.data.session.compact({ sessionID, model: { providerID: "demo", id: "model" } })
+  const failed = request.catch((error: unknown) => error)
+  const prompt = fixture.data.session.prompt({ sessionID, text: "Follow up" })
+  if (rpc === "model") fixture.model.reject(new Error("Model setup failed"))
+  if (rpc === "compact") {
+    fixture.model.resolve()
+    fixture.response.resolve(new Response("Admission failed", { status: 500 }))
+  }
+  expect(await failed).toBeInstanceOf(Error)
+  await prompt
+  expect(fixture.data.session.pending.list(sessionID).map((row) => row.type)).toEqual(["user"])
+  expect(fixture.data.session.message.list(sessionID)).toMatchObject([{ type: "user", text: "Follow up" }])
+})
+
+test.each(["proposed", "canonical", "existing"])(
+  "preserves acknowledged %s compaction after an HTTP error",
+  async (kind) => {
+    using fixture = setup()
+    if (kind === "existing") fixture.enqueue("msg_canonical")
+    const request = fixture.data.session.compact({ sessionID })
+    const failed = request.catch((error: unknown) => error)
+    const id = kind === "proposed" ? fixture.data.session.pending.list(sessionID)[0].id : "msg_canonical"
+    if (kind !== "existing") fixture.enqueue(id)
+    expect(fixture.data.session.pending.list(sessionID)).toEqual([item(id)])
+    fixture.response.resolve(new Response("Lost response", { status: 500 }))
+    expect(await failed).toBeInstanceOf(Error)
+    expect(fixture.data.session.pending.list(sessionID)).toEqual([item(id)])
+    expect(fixture.listeners.size).toBe(1)
+  },
+)
+
+test("uses a fresh control ID when the known pending compaction starts during model setup", async () => {
+  const proposed = Promise.withResolvers<string>()
+  using fixture = setup(async (request) => {
+    if (!request.url.endsWith("/compact")) return undefined
+    const body = await request.json()
+    proposed.resolve(body.id)
+    if (body.id === "msg_existing") return Response.json({ message: "Control ID already consumed" }, { status: 409 })
+    return Response.json({ data: item(body.id) })
+  })
+  fixture.enqueue("msg_existing")
+  const request = fixture.data.session.compact({ sessionID, model: { providerID: "demo", id: "model" } })
+  const result = request.catch((error: unknown) => error)
+  expect(fixture.data.session.pending.list(sessionID)).toEqual([item("msg_existing")])
+  await wait(() => fixture.calls.includes("model"))
+  fixture.emit({
+    ...event,
+    type: "session.compaction.started",
+    data: { sessionID, inputID: "msg_existing", reason: "manual" },
+  })
+  fixture.model.resolve()
+  expect(await proposed.promise).not.toBe("msg_existing")
+  expect(await result).toEqual(item(await proposed.promise))
+  expect(fixture.data.session.pending.list(sessionID)).toEqual([item(await proposed.promise)])
+  expect(fixture.data.session.message.list(sessionID)).toMatchObject([
+    { id: "msg_existing", type: "compaction", status: "running" },
+  ])
+})
+
+test.each(["compaction", "canonical compaction", "user"])(
+  "preserves a fetched durable %s when SSE is delayed and HTTP fails",
+  async (type) => {
+    using fixture = setup(async (request) => {
+      if (request.url.endsWith("/prompt")) return fixture.response.promise
+      return undefined
+    })
+    const request =
+      type === "user"
+        ? fixture.data.session.prompt({ sessionID, text: "Follow up" })
+        : fixture.data.session.compact({ sessionID })
+    const result = request.catch((error: unknown) => error)
+    const id = type === "canonical compaction" ? "msg_canonical" : fixture.data.session.pending.list(sessionID)[0].id
+    const durable: SessionInboxInfo =
+      type === "user" ? { ...item(id, 20), type: "user", payload: { text: "Follow up" } } : item(id, 20)
+    fixture.pending.push(durable)
+    await fixture.data.session.pending.sync(sessionID)
+    expect(fixture.data.session.pending.list(sessionID)).toEqual([durable])
+    fixture.response.resolve(new Response("Lost response", { status: 500 }))
+    expect(await result).toBeInstanceOf(Error)
+    expect(fixture.data.session.pending.list(sessionID)).toEqual([durable])
+    if (type === "user")
+      expect(fixture.data.session.message.list(sessionID)).toMatchObject([{ id, type: "user", text: "Follow up" }])
+  },
+)
+
+test("keeps one event listener and removes it when the data owner is disposed during a gate", async () => {
+  using fixture = setup()
+  const gate = Promise.withResolvers<void>()
+  const first = fixture.data.session.prompt({ sessionID, text: "First", gate: gate.promise })
+  const compact = fixture.data.session.compact({ sessionID })
+  expect(fixture.listeners.size).toBe(1)
+  fixture.dispose()
+  expect(fixture.listeners.size).toBe(0)
+  gate.resolve()
+  fixture.response.resolve(Response.json({ data: item("msg_canonical") }))
+  await Promise.all([first, compact])
+  expect(fixture.listeners.size).toBe(0)
+})
+
+test("routes concurrent compaction observations by session through one listener", async () => {
+  const firstResponse = Promise.withResolvers<Response>()
+  const secondResponse = Promise.withResolvers<Response>()
+  using fixture = setup(async (request) => {
+    if (!request.url.endsWith("/compact")) return undefined
+    return request.url.includes(`/session/${sessionID}/`) ? firstResponse.promise : secondResponse.promise
+  })
+  const first = fixture.data.session.compact({ sessionID })
+  const second = fixture.data.session.compact({ sessionID: "ses_other" })
+  const firstID = fixture.data.session.pending.list(sessionID)[0].id
+  const secondID = fixture.data.session.pending.list("ses_other")[0].id
+  expect(fixture.listeners.size).toBe(1)
+  fixture.emit({ ...event, type: "session.inbox.cancelled", data: { sessionID, inboxID: firstID } })
+  expect(fixture.data.session.pending.list(sessionID)).toEqual([])
+  expect(fixture.data.session.pending.list("ses_other").map((row) => row.id)).toEqual([secondID])
+
+  firstResponse.resolve(Response.json({ data: item(firstID) }))
+  secondResponse.resolve(Response.json({ data: { ...item(secondID), sessionID: "ses_other" } }))
+  await Promise.all([first, second])
+  expect(fixture.data.session.pending.list(sessionID)).toEqual([])
+  expect(fixture.data.session.pending.list("ses_other")).toEqual([{ ...item(secondID), sessionID: "ses_other" }])
+  expect(fixture.listeners.size).toBe(1)
+})
+
+test.each(["gate", "prepare"])(
+  "a preceding prompt's failed %s does not block compaction or following model preparation",
+  async (kind) => {
+    using fixture = setup()
+    const gate = Promise.withResolvers<void>()
+    const prepared: string[] = []
+    const first = fixture.data.session
+      .prompt({
+        sessionID,
+        id: "msg_first",
+        text: "First",
+        gate: kind === "gate" ? gate.promise : undefined,
+        prepare: () => {
+          prepared.push("first")
+          return gate.promise
+        },
+      })
+      .catch((error: unknown) => error)
+    const compact = fixture.data.session.compact({ sessionID, model: { providerID: "demo", id: "first" } })
+    const following = fixture.data.session.prompt({
+      sessionID,
+      text: "Follow up",
+      prepare: () => {
+        prepared.push("following")
+        return fixture.api.session.switchModel({ sessionID, model: { providerID: "demo", id: "second" } })
+      },
+    })
+    if (kind === "prepare") await wait(() => prepared.includes("first"))
+    gate.reject(new Error("Preparation failed"))
+    expect(await first).toBeInstanceOf(Error)
+    await wait(() => fixture.calls.includes("model"))
+    expect(prepared).toEqual(kind === "prepare" ? ["first"] : [])
+    fixture.model.resolve()
+    fixture.response.resolve(Response.json({ data: item("msg_canonical") }))
+    await Promise.all([compact, following])
+    expect(fixture.calls).toEqual(["model", "compact", "model", "prompt"])
+    expect(prepared.at(-1)).toBe("following")
+    expect(fixture.data.session.message.list(sessionID)).toMatchObject([{ type: "user", text: "Follow up" }])
+  },
+)
+
+test("creation failure rejects gated prompt, compaction, and following preparation without sending their RPCs", async () => {
+  const creation = Promise.withResolvers<Response>()
+  const requested = Promise.withResolvers<void>()
+  using fixture = setup(async (request) => {
+    if (!request.url.endsWith("/api/session")) return undefined
+    requested.resolve()
+    return creation.promise
+  })
+  const gate = Promise.withResolvers<void>()
+  const prepared: string[] = []
+  const created = fixture.data.session.create({ id: sessionID })
+  const first = fixture.data.session.prompt({ sessionID, text: "First", gate: gate.promise })
+  const compact = fixture.data.session.compact({ sessionID, model: { providerID: "demo", id: "model" } })
+  const following = fixture.data.session.prompt({
+    sessionID,
+    text: "Follow up",
+    prepare: async () => {
+      prepared.push("following")
+    },
+  })
+  const results = Promise.allSettled([created.request, first, compact, following])
+  await requested.promise
+  creation.resolve(new Response("Creation failed", { status: 500 }))
+  expect((await results).map((result) => result.status)).toEqual(["rejected", "rejected", "rejected", "rejected"])
+  expect(fixture.calls).toEqual([])
+  expect(prepared).toEqual([])
+  expect(fixture.data.session.get(sessionID)).toBeUndefined()
+  expect(fixture.data.session.pending.list(sessionID)).toEqual([])
+  expect(fixture.listeners.size).toBe(1)
+  gate.resolve()
+})
+
+const sessionID = "ses_compact"
+const event = { id: "evt_compact", created: 10, durable: { aggregateID: sessionID, seq: 1, version: 1 } }
+const item = (id: string, timeCreated = 10): SessionInboxCompaction => ({
+  id,
+  sessionID,
+  timeCreated,
+  type: "compaction",
+  delivery: "steer",
+  payload: {},
+})
+
+function setup(override?: (request: Request) => Promise<Response | undefined>) {
+  const model = Promise.withResolvers<void>()
+  const response = Promise.withResolvers<Response>()
+  const calls: string[] = []
+  const proposals: string[] = []
+  const pending: SessionInboxInfo[] = []
+  const listeners = new Set<Parameters<CreateDataInput["event"]["listen"]>[0]>()
+  const api = OpenCode.make({
+    baseUrl: "http://opencode.local",
+    fetch: async (input, init) => {
+      const request = input instanceof Request ? input : new Request(input, init)
+      const overridden = await override?.(request)
+      if (overridden) return overridden
+      const rpc = new URL(request.url).pathname.split("/").at(-1)
+      if (rpc === "inbox") return Response.json({ data: pending })
+      if (rpc === "model") {
+        calls.push(rpc)
+        await model.promise
+        return new Response(null, { status: 204 })
+      }
+      if (rpc === "compact") {
+        calls.push(rpc)
+        proposals.push((await request.json()).id)
+        return (await response.promise).clone()
+      }
+      if (rpc === "prompt") {
+        calls.push(rpc)
+        return Response.json({
+          data: { ...item((await request.json()).id), type: "user", payload: { text: "Follow up" } },
+        })
+      }
+      throw new Error(`Unexpected request: ${request.url}`)
+    },
+  })
+  const root = createRoot((dispose) => ({
+    data: createData({
+      api: () => api,
+      directory: "/project",
+      event: {
+        on: () => () => {},
+        listen(handler) {
+          listeners.add(handler)
+          return () => listeners.delete(handler)
+        },
+      },
+    }),
+    dispose,
+  }))
+  const emit = (details: OpenCodeEvent) => listeners.forEach((listener) => listener({ name: details.type, details }))
+  return {
+    data: root.data,
+    api,
+    dispose: root.dispose,
+    [Symbol.dispose]: root.dispose,
+    model,
+    response,
+    calls,
+    proposals,
+    pending,
+    listeners,
+    emit,
+    enqueue(id: string, created = 10) {
+      emit({
+        ...event,
+        created,
+        type: "session.inbox.enqueued",
+        data: { sessionID, inboxID: id, item: { type: "compaction", delivery: "steer", payload: {} } },
+      })
+    },
+  }
+}
+
+async function wait(predicate: () => boolean) {
+  for (let attempt = 0; attempt < 100; attempt++) {
+    if (predicate()) return
+    await Bun.sleep(5)
+  }
+  throw new Error("Timed out waiting for request")
+}

packages/client/test/solid-data.test.ts

@@ -1,4 +1,5 @@
 import { expect, test } from "bun:test"
+import { getEventListeners } from "node:events"
 import { createRoot } from "solid-js"
 import { createData, type CreateDataInput } from "../src/solid"
 import { OpenCode, type OpenCodeEvent, type Project, type SessionInfo } from "../src/promise"
@@ -414,6 +415,120 @@ test("loads bounded message pages", async () => {
   }
 })
 
+test.each(["success", "failure", "cancel", "cancel-retry", "cancel-page", "join-cancel", "join-failure"])(
+  "bulk history (%s)",
+  async (mode) => {
+    const messages = [1, 2, 3].map((index) => ({
+      id: `msg_${index}`,
+      type: "user",
+      text: `Message ${index}`,
+      time: { created: index },
+    }))
+    const release = Promise.withResolvers<void>()
+    const controller = new AbortController()
+    const requests: URL[] = []
+    const publications: string[][] = []
+    const api = OpenCode.make({
+      baseUrl: "http://opencode.local",
+      fetch: async (input, init) => {
+        const url = new URL(input instanceof Request ? input.url : String(input))
+        requests.push(url)
+        const cursor = url.searchParams.get("cursor")
+        if (!cursor) return Response.json({ data: [messages[2]], cursor: { next: "recent" } })
+        if (cursor === "recent") {
+          if (mode.startsWith("join")) await release.promise
+          if (mode === "join-failure") return Response.json({ message: "offline" }, { status: 503 })
+          return Response.json({ data: [messages[2], messages[1]], cursor: { next: "oldest" } })
+        }
+        if (cursor === "oldest") return Response.json({ data: [messages[0]], cursor: { next: "empty" } })
+        expect(init?.signal).toBe(requests.length === 4 ? controller.signal : undefined)
+        await release.promise
+        if (mode === "failure") return Response.json({ message: "offline" }, { status: 503 })
+        return Response.json({ data: [], cursor: {} })
+      },
+    })
+    const setup = createRoot((dispose) => {
+      const data = createData({
+        api: () => api,
+        directory: "/project",
+        event: { on: () => () => {}, listen: () => () => {} },
+      })
+      return { data, dispose }
+    })
+
+    try {
+      await setup.data.session.message.sync("ses_refresh")
+      const newest = setup.data.session.message.get("ses_refresh", "msg_3")
+      const load = setup.data.session.message.loadMore(
+        "ses_refresh",
+        mode.startsWith("join")
+          ? undefined
+          : {
+              all: true,
+              signal: controller.signal,
+              beforePublish: () => {
+                publications.push(setup.data.session.message.list("ses_refresh").map((message) => message.id))
+                expect(setup.data.session.message.get("ses_refresh", "msg_3")).toBe(newest)
+              },
+            },
+      )
+      const joined = setup.data.session.message.loadMore("ses_refresh", { all: true, signal: controller.signal })
+      const settled = Promise.allSettled([load, joined])
+      if (mode.startsWith("join")) {
+        await wait(() => requests.length === 2)
+        expect(getEventListeners(controller.signal, "abort")).toHaveLength(1)
+        controller.abort()
+        let cancelled = false
+        void joined.then(() => {
+          cancelled = true
+        })
+        await wait(() => cancelled)
+        expect(setup.data.session.message.loading("ses_refresh")).toBe(true)
+        expect(getEventListeners(controller.signal, "abort")).toHaveLength(0)
+        release.resolve()
+        expect((await settled).map((result) => result.status)).toEqual(
+          mode === "join-failure" ? ["rejected", "fulfilled"] : ["fulfilled", "fulfilled"],
+        )
+        expect(requests.at(-1)?.searchParams.get("limit")).toBe("20")
+        expect(requests).toHaveLength(2)
+        expect(setup.data.session.message.more("ses_refresh")).toBe(true)
+        expect(setup.data.session.message.list("ses_refresh").map((message) => message.id)).toEqual(
+          mode === "join-failure" ? ["msg_3"] : ["msg_2", "msg_3"],
+        )
+        return
+      }
+      await wait(() => requests.length === 4)
+      expect(setup.data.session.message.loading("ses_refresh")).toBe(true)
+      expect(setup.data.session.message.list("ses_refresh").map((message) => message.id)).toEqual(["msg_3"])
+      expect(requests.slice(1).map((url) => url.searchParams.get("limit"))).toEqual(["200", "200", "200"])
+      if (mode.startsWith("cancel")) controller.abort()
+      const retry =
+        mode === "cancel-retry" || mode === "cancel-page"
+          ? setup.data.session.message.loadMore("ses_refresh", mode === "cancel-retry" ? { all: true } : undefined)
+          : undefined
+      release.resolve()
+      expect((await settled).map((result) => result.status)).toEqual(
+        mode === "failure" ? ["rejected", "rejected"] : ["fulfilled", "fulfilled"],
+      )
+      await retry
+      const success = mode === "success" || mode === "cancel-retry"
+      expect(setup.data.session.message.loading("ses_refresh")).toBe(false)
+      expect(setup.data.session.message.more("ses_refresh")).toBe(!success)
+      expect(setup.data.session.message.list("ses_refresh").map((message) => message.id)).toEqual(
+        success ? ["msg_1", "msg_2", "msg_3"] : mode === "cancel-page" ? ["msg_2", "msg_3"] : ["msg_3"],
+      )
+      expect(setup.data.session.message.get("ses_refresh", "msg_3")).toBe(newest)
+      expect(requests).toHaveLength(mode === "cancel-retry" ? 7 : mode === "cancel-page" ? 5 : 4)
+      if (mode === "cancel-page") expect(requests.at(-1)?.searchParams.get("limit")).toBe("20")
+      expect(publications).toEqual(mode === "success" ? [["msg_3"]] : [])
+      expect(getEventListeners(controller.signal, "abort")).toHaveLength(0)
+    } finally {
+      release.resolve()
+      setup.dispose()
+    }
+  },
+)
+
 test("preserves assistant content replacement events across an active message read", async () => {
   const listeners = new Set<Parameters<CreateDataInput["event"]["listen"]>[0]>()
   const release = Promise.withResolvers<void>()
@@ -485,6 +600,102 @@ test("preserves assistant content replacement events across an active message re
   }
 })
 
+test.each([
+  "session.execution.succeeded",
+  "session.execution.failed",
+  "session.execution.interrupted",
+  "session.execution.started",
+  "session.deleted",
+] as const)("preserves %s activity when an older snapshot arrives", async (type) => {
+  const release = Promise.withResolvers<void>()
+  const requested = Promise.withResolvers<void>()
+  const setup = activityFixture(async () => {
+    requested.resolve()
+    await release.promise
+    return Response.json({
+      data: {
+        ...(type === "session.execution.started" ? {} : { ses_refresh: { type: "running" } }),
+        ses_hydrated: { type: "running" },
+      },
+    })
+  })
+
+  try {
+    if (type !== "session.execution.started") setup.data.session.setStatus("ses_refresh", "running")
+    setup.emit({ type: "server.connected", data: {} })
+    await requested.promise
+    setup.emit({
+      id: "evt_activity",
+      created: 2,
+      type,
+      durable: { aggregateID: "ses_refresh", seq: 2, version: 1 },
+      data: { sessionID: "ses_refresh", reason: "user" },
+    })
+    expect(setup.data.session.status("ses_refresh")).toBe(type === "session.execution.started" ? "running" : "idle")
+    release.resolve()
+    await wait(() => setup.data.session.status("ses_hydrated") === "running")
+    expect(setup.data.session.status("ses_refresh")).toBe(type === "session.execution.started" ? "running" : "idle")
+  } finally {
+    release.resolve()
+    setup.dispose()
+  }
+})
+
+test("ignores activity snapshots from an older connection", async () => {
+  const reads: ReturnType<typeof Promise.withResolvers<Response>>[] = []
+  const setup = activityFixture(() => {
+    const read = Promise.withResolvers<Response>()
+    reads.push(read)
+    return read.promise
+  })
+
+  try {
+    setup.emit({ type: "server.connected", data: {} })
+    await wait(() => reads.length === 1)
+    setup.emit({ type: "server.connected", data: {} })
+    await wait(() => reads.length === 2)
+    reads[1]?.resolve(Response.json({ data: { ses_new: { type: "running" } } }))
+    await wait(() => setup.data.session.status("ses_new") === "running")
+    reads[0]?.resolve(Response.json({ data: { ses_old: { type: "running" } } }))
+    await Bun.sleep(20)
+    expect(setup.data.session.status("ses_new")).toBe("running")
+    expect(setup.data.session.status("ses_old")).toBe("idle")
+  } finally {
+    reads.forEach((read) => read.resolve(Response.json({ data: {} })))
+    setup.dispose()
+  }
+})
+
+function activityFixture(read: () => Response | Promise<Response>) {
+  const listeners = new Set<Parameters<CreateDataInput["event"]["listen"]>[0]>()
+  const api = OpenCode.make({
+    baseUrl: "http://opencode.local",
+    fetch: async (input, init) => {
+      const request = input instanceof Request ? input : new Request(input, init)
+      const path = new URL(request.url).pathname
+      if (path === "/api/session/active") return read()
+      if (path === "/api/project") return Response.json([])
+      if (path === "/api/location") return Response.json({ directory: "/project" })
+      return Response.json({ location: { directory: "/project" }, data: { branch: "main" } })
+    },
+  })
+  return createRoot((dispose) => ({
+    data: createData({
+      api: () => api,
+      directory: "/project",
+      event: {
+        on: () => () => {},
+        listen(handler) {
+          listeners.add(handler)
+          return () => listeners.delete(handler)
+        },
+      },
+    }),
+    emit: (details: OpenCodeEvent) => listeners.forEach((listener) => listener({ name: details.type, details })),
+    dispose,
+  }))
+}
+
 async function wait(check: () => boolean) {
   const started = Date.now()
   while (!check()) {

packages/console/app/src/global.d.ts

@@ -1,5 +1,7 @@
 /// <reference types="@solidjs/start/env" />
 
+import "@solidjs/start"
+
 export declare module "@solidjs/start/server" {
   export type APIEvent = { request: Request }
 }

packages/core/src/aisdk-native.ts

@@ -84,10 +84,7 @@ export function map(input: MapInput): Mapping | undefined {
           ...mapAPIKey(input.settings),
           ...(typeof input.settings.location === "string" ? { location: input.settings.location } : {}),
           ...(typeof input.settings.project === "string" ? { project: input.settings.project } : {}),
-          ...mapGoogleOptions(
-            input.settings,
-            isStringRecord(input.settings.labels) ? { labels: input.settings.labels } : {},
-          ),
+          ...mapGoogleOptions(input.settings),
         },
         ...(isStringRecord(input.settings.headers) ? { headers: input.settings.headers } : {}),
       }
@@ -296,7 +293,7 @@ function mapAPIKey(settings: Readonly<Record<string, unknown>>) {
   return typeof settings.apiKey === "string" ? { apiKey: settings.apiKey } : {}
 }
 
-function mapGoogleOptions(settings: Readonly<Record<string, unknown>>, extra: Readonly<Record<string, unknown>> = {}) {
+function mapGoogleOptions(settings: Readonly<Record<string, unknown>>) {
   const input = settings.thinkingConfig
   const thinkingConfig = {
     ...(isRecord(input) && typeof input.thinkingBudget === "number" ? { thinkingBudget: input.thinkingBudget } : {}),
@@ -311,7 +308,6 @@ function mapGoogleOptions(settings: Readonly<Record<string, unknown>>, extra: Re
     ...(Array.isArray(settings.safetySettings) ? { safetySettings: settings.safetySettings } : {}),
     ...(typeof settings.serviceTier === "string" ? { serviceTier: settings.serviceTier } : {}),
     ...(Object.keys(thinkingConfig).length > 0 ? { thinkingConfig } : {}),
-    ...extra,
   }
   if (Object.keys(options).length === 0) return {}
   return { providerOptions: options }
@@ -345,28 +341,21 @@ function mapOpenRouter(
 }
 
 function mapOpenRouterOptions(settings: Readonly<Record<string, unknown>>) {
-  const options = Object.fromEntries(
-    Object.entries(settings).filter(
-      ([key]) =>
-        ![
-          "apiKey",
-          "api_keys",
-          "appName",
-          "appUrl",
-          "authToken",
-          "baseURL",
-          "chunkTimeout",
-          "compatibility",
-          "extraBody",
-          "fetch",
-          "headers",
-          "promptCacheKey",
-          "timeout",
-        ].includes(key),
-    ),
-  )
-  if (Object.keys(options).length === 0) return {}
-  return { providerOptions: options }
+  return mapProviderOptions(settings, [
+    "apiKey",
+    "api_keys",
+    "appName",
+    "appUrl",
+    "authToken",
+    "baseURL",
+    "chunkTimeout",
+    "compatibility",
+    "extraBody",
+    "fetch",
+    "headers",
+    "promptCacheKey",
+    "timeout",
+  ])
 }
 
 function isStringRecord(value: unknown): value is Readonly<Record<string, string>> {

packages/core/src/aisdk.ts

@@ -482,8 +482,7 @@ function toolMessage(input: LLMRequest["messages"][number]) {
     const value = part.result.value.filter((item) => {
       if (item.type !== "file") return true
       if (!item.mime.startsWith("image/") && item.mime !== "application/pdf") return true
-      const data = /^data:[^;,]+(?:;[^,]*)*;base64,(.*)$/s.exec(item.uri)?.[1] ?? item.uri
-      media.push({ type: "file", mediaType: item.mime, data, filename: item.name })
+      media.push({ type: "file", mediaType: item.mime, data: fileData(item.uri), filename: item.name })
       return false
     })
     return toolResultPart({
@@ -507,7 +506,7 @@ function text(part: ContentPart) {
 function userPart(part: ContentPart): UserContent {
   if (part.type === "text") return [{ type: "text", text: part.text }]
   if (part.type === "media")
-    return [{ type: "file", mediaType: part.mediaType, data: part.data, filename: part.filename }]
+    return [{ type: "file", mediaType: part.mediaType, data: fileData(part.data), filename: part.filename }]
   return []
 }
 
@@ -516,7 +515,7 @@ function assistantPart(part: ContentPart): AssistantContent {
     case "text":
       return [{ type: "text", text: part.text, providerOptions: metadataProviderOptions(part.providerMetadata) }]
     case "media":
-      return [{ type: "file", mediaType: part.mediaType, data: part.data, filename: part.filename }]
+      return [{ type: "file", mediaType: part.mediaType, data: fileData(part.data), filename: part.filename }]
     case "reasoning":
       return [{ type: "reasoning", text: part.text, providerOptions: metadataProviderOptions(part.providerMetadata) }]
     case "tool-call":
@@ -535,6 +534,15 @@ function assistantPart(part: ContentPart): AssistantContent {
   }
 }
 
+function fileData(data: Extract<ContentPart, { type: "media" }>["data"]) {
+  if (typeof data !== "string") return data
+  const base64 = /^data:[^;,]+(?:;[^,]*)*;base64,(.*)$/s.exec(data)?.[1]
+  if (base64 !== undefined) return base64
+  if (!URL.canParse(data)) return data
+  const url = new URL(data)
+  return url.protocol === "http:" || url.protocol === "https:" ? url : data
+}
+
 function toolResultPart(part: ContentPart): ToolResultContent[] {
   if (part.type !== "tool-result") return []
   return [
@@ -612,12 +620,12 @@ function streamLanguage(language: LanguageModelV3, options: LanguageModelV3CallO
     Stream.unwrap(
       Effect.tryPromise({
         try: () => language.doStream(options),
-        catch: llmError,
+        catch: (error) => llmError(error, "request"),
       }).pipe(
         Effect.map((result) =>
           Stream.fromReadableStream({
             evaluate: () => result.stream,
-            onError: llmError,
+            onError: (error) => llmError(error, "read"),
           }).pipe(
             Stream.mapEffect((event) => streamPartEvents(state, event)),
             Stream.flatMap((events) => Stream.fromIterable(events)),
@@ -744,7 +752,7 @@ function streamPartEvents(
         }),
       ])
     case "error":
-      return Effect.fail(llmError(event.error))
+      return Effect.fail(llmError(event.error, "read"))
   }
 }
 
@@ -794,9 +802,20 @@ function messageValue(input: unknown) {
   }
 }
 
-function llmError(error: unknown) {
+function llmError(error: unknown, operation: "request" | "read") {
   if (error instanceof AIError) return error
   if (APICallError.isInstance(error)) return apiCallError(error)
+  const network = networkFailure(error)
+  if (network)
+    return new AIError({
+      reason: new TransportError({
+        message: network.message.trim() === "" ? unknownErrorMessage(error) : network.message,
+        cause: error,
+        transport: "http",
+        operation,
+        code: network.code,
+      }),
+    })
   return new AIError({
     reason: new UnknownProviderError({
       message: unknownErrorMessage(error),
@@ -806,6 +825,50 @@ function llmError(error: unknown) {
   })
 }
 
+// Runtime-generated network failure shapes. The codes mirror the AI SDK's own
+// Bun network error list in handleFetchError; the messages are undici's fetch
+// TypeError and stream termination strings plus our SSE chunk timeout error.
+// Unrecognized shapes still retry via the UnknownProvider default; this match
+// only adds transport semantics (continuation eligibility, display).
+const NETWORK_ERROR_CODES = new Set([
+  "ECONNRESET",
+  "ECONNREFUSED",
+  "ETIMEDOUT",
+  "EPIPE",
+  "ConnectionRefused",
+  "ConnectionClosed",
+  "FailedToOpenSocket",
+])
+const NETWORK_ERROR_MESSAGES = new Set([
+  "fetch failed",
+  "failed to fetch",
+  "terminated",
+  "other side closed",
+  "sse read timed out",
+])
+
+const NativeErrorShape = Schema.Struct({
+  message: Schema.String,
+  code: Schema.optionalKey(Schema.String),
+  cause: Schema.optionalKey(Schema.Unknown),
+})
+const decodeNativeErrorShape = Schema.decodeUnknownOption(NativeErrorShape)
+
+function networkFailure(error: unknown, depth = 0): { message: string; code?: string } | undefined {
+  if (depth > 4) return undefined
+  const shape = Option.getOrUndefined(decodeNativeErrorShape(error))
+  if (!shape) return undefined
+  // Prefer the deepest match: wrappers like undici's "fetch failed" TypeError
+  // carry the specific network code on their cause.
+  const cause = networkFailure(shape.cause, depth + 1)
+  if (cause) return cause
+  if (shape.code !== undefined && (NETWORK_ERROR_CODES.has(shape.code) || shape.code.startsWith("UND_ERR")))
+    return { message: shape.message, code: shape.code }
+  if (NETWORK_ERROR_MESSAGES.has(shape.message.trim().toLowerCase()))
+    return { message: shape.message, code: shape.code }
+  return undefined
+}
+
 function apiCallError(error: APICallError) {
   const failure = RequestExecutor.httpFailure({
     message: providerErrorMessage(error),

packages/core/src/bus.ts

@@ -294,162 +294,156 @@ export function configured(options?: Options) {
         ) {
           return Effect.gen(function* () {
             const durable = definition.durable
-            if (durable) {
-              const aggregateID = (event.data as Record<string, unknown>)[durable.aggregate]
-              if (typeof aggregateID !== "string") {
-                yield* Effect.die(
-                  new InvalidDurableEventError({
-                    type: event.type,
-                    message: `Expected string aggregate field ${durable.aggregate}`,
-                  }),
-                )
-              } else {
-                if (input && input.aggregateID !== aggregateID) {
-                  yield* Effect.die(
-                    new InvalidDurableEventError({
-                      type: event.type,
-                      message: `Aggregate mismatch: expected ${input.aggregateID}, got ${aggregateID}`,
-                    }),
-                  )
-                }
-                const list = projectors.get(versionedType(definition.type, durable.version)) ?? []
-                return yield* Effect.uninterruptible(
-                  Effect.gen(function* () {
-                    const committed = yield* db
-                      .transaction(
-                        () =>
-                          Effect.gen(function* () {
-                            const row = yield* db
-                              .select({ seq: EventSequenceTable.seq, ownerID: EventSequenceTable.owner_id })
-                              .from(EventSequenceTable)
-                              .where(eq(EventSequenceTable.aggregate_id, aggregateID))
-                              .get()
-                              .pipe(Effect.orDie)
-                            const latest = row?.seq ?? -1
-                            const encoded = Schema.encodeUnknownSync(definition.data)(event.data) as Record<
-                              string,
-                              unknown
-                            >
-                            if (input?.strictOwner && row?.ownerID && row.ownerID !== input.ownerID) {
-                              yield* Effect.die(
-                                new InvalidDurableEventError({
-                                  type: event.type,
-                                  message: `Replay owner mismatch for aggregate ${aggregateID}: expected ${row.ownerID}, got ${input.ownerID ?? "none"}`,
-                                }),
-                              )
-                            }
-                            if (input && input.seq <= latest) {
-                              if (!persist) return
-                              const stored = yield* db
-                                .select()
-                                .from(EventTable)
-                                .where(and(eq(EventTable.aggregate_id, aggregateID), eq(EventTable.seq, input.seq)))
-                                .get()
-                                .pipe(Effect.orDie)
-                              if (
-                                stored?.id === event.id &&
-                                stored.type === versionedType(definition.type, durable.version) &&
-                                stored.created === (event.created ?? 0) &&
-                                isDeepStrictEqual(stored.data, encoded)
-                              ) {
-                                if (input.ownerID && row?.ownerID == null) {
-                                  yield* db
-                                    .update(EventSequenceTable)
-                                    .set({ owner_id: input.ownerID })
-                                    .where(eq(EventSequenceTable.aggregate_id, aggregateID))
-                                    .run()
-                                    .pipe(Effect.orDie)
-                                }
-                                return
-                              }
-                              yield* Effect.die(
-                                new InvalidDurableEventError({
-                                  type: event.type,
-                                  message: `Replay diverged at aggregate ${aggregateID} sequence ${input.seq}`,
-                                }),
-                              )
-                            }
-                            if (input && row?.ownerID && row.ownerID !== input.ownerID) {
-                              return
-                            }
-                            const seq = input?.seq ?? latest + 1
-                            if (input && seq !== latest + 1) {
-                              yield* Effect.die(
-                                new InvalidDurableEventError({
-                                  type: event.type,
-                                  message: `Sequence mismatch for aggregate ${aggregateID}: expected ${latest + 1}, got ${seq}`,
-                                }),
-                              )
-                            }
-                            if (persist) {
-                              const stored = yield* db
-                                .select({ aggregateID: EventTable.aggregate_id, seq: EventTable.seq })
-                                .from(EventTable)
-                                .where(eq(EventTable.id, event.id))
-                                .get()
-                                .pipe(Effect.orDie)
-                              if (stored)
-                                yield* Effect.die(
-                                  new InvalidDurableEventError({
-                                    type: event.type,
-                                    message: `Event ${event.id} already exists at aggregate ${stored.aggregateID} sequence ${stored.seq}`,
-                                  }),
-                                )
-                            }
-                            const committed = {
-                              ...event,
-                              durable: { aggregateID, seq, version: durable.version },
-                            } as Event.Payload
-                            const route = yield* prepareRoutes([committed])
-                            for (const projector of list) {
-                              yield* projector(committed)
-                            }
-                            if (commit) yield* commit(seq)
-                            yield* db
-                              .insert(EventSequenceTable)
-                              .values([{ aggregate_id: aggregateID, seq, owner_id: input?.ownerID }])
-                              .onConflictDoUpdate({
-                                target: EventSequenceTable.aggregate_id,
-                                set: {
-                                  seq: sql`max(${EventSequenceTable.seq}, ${seq})`,
-                                  ...(input?.ownerID && row?.ownerID == null ? { owner_id: input.ownerID } : {}),
-                                },
-                              })
-                              .run()
-                              .pipe(Effect.orDie)
-                            if (persist)
+            if (!durable) return yield* Effect.void
+            const aggregateID = (event.data as Record<string, unknown>)[durable.aggregate]
+            if (typeof aggregateID !== "string")
+              return yield* Effect.die(
+                new InvalidDurableEventError({
+                  type: event.type,
+                  message: `Expected string aggregate field ${durable.aggregate}`,
+                }),
+              )
+            if (input && input.aggregateID !== aggregateID) {
+              yield* Effect.die(
+                new InvalidDurableEventError({
+                  type: event.type,
+                  message: `Aggregate mismatch: expected ${input.aggregateID}, got ${aggregateID}`,
+                }),
+              )
+            }
+            const list = projectors.get(versionedType(definition.type, durable.version)) ?? []
+            return yield* Effect.uninterruptible(
+              Effect.gen(function* () {
+                const committed = yield* db
+                  .transaction(
+                    () =>
+                      Effect.gen(function* () {
+                        const row = yield* db
+                          .select({ seq: EventSequenceTable.seq, ownerID: EventSequenceTable.owner_id })
+                          .from(EventSequenceTable)
+                          .where(eq(EventSequenceTable.aggregate_id, aggregateID))
+                          .get()
+                          .pipe(Effect.orDie)
+                        const latest = row?.seq ?? -1
+                        const encoded = Schema.encodeUnknownSync(definition.data)(event.data) as Record<string, unknown>
+                        if (input?.strictOwner && row?.ownerID && row.ownerID !== input.ownerID) {
+                          yield* Effect.die(
+                            new InvalidDurableEventError({
+                              type: event.type,
+                              message: `Replay owner mismatch for aggregate ${aggregateID}: expected ${row.ownerID}, got ${input.ownerID ?? "none"}`,
+                            }),
+                          )
+                        }
+                        if (input && input.seq <= latest) {
+                          if (!persist) return
+                          const stored = yield* db
+                            .select()
+                            .from(EventTable)
+                            .where(and(eq(EventTable.aggregate_id, aggregateID), eq(EventTable.seq, input.seq)))
+                            .get()
+                            .pipe(Effect.orDie)
+                          if (
+                            stored?.id === event.id &&
+                            stored.type === versionedType(definition.type, durable.version) &&
+                            stored.created === (event.created ?? 0) &&
+                            isDeepStrictEqual(stored.data, encoded)
+                          ) {
+                            if (input.ownerID && row?.ownerID == null) {
                               yield* db
-                                .insert(EventTable)
-                                .values([
-                                  {
-                                    id: event.id,
-                                    aggregate_id: aggregateID,
-                                    seq,
-                                    created: event.created ?? 0,
-                                    type: versionedType(definition.type, durable.version),
-                                    data: encoded,
-                                  },
-                                ])
+                                .update(EventSequenceTable)
+                                .set({ owner_id: input.ownerID })
+                                .where(eq(EventSequenceTable.aggregate_id, aggregateID))
                                 .run()
                                 .pipe(Effect.orDie)
-                            return { aggregateID, seq, event: committed, route }
-                          }),
-                        { behavior: "immediate" },
-                      )
-                      .pipe(Effect.orDie)
-                    if (committed) {
-                      committed.route()
-                      yield* Effect.forEach(
-                        pubsub.durable.get(committed.aggregateID) ?? [],
-                        (wake) => PubSub.publish(wake, undefined),
-                        { discard: true },
-                      )
-                    }
-                    return committed
-                  }),
-                )
-              }
-            }
+                            }
+                            return
+                          }
+                          yield* Effect.die(
+                            new InvalidDurableEventError({
+                              type: event.type,
+                              message: `Replay diverged at aggregate ${aggregateID} sequence ${input.seq}`,
+                            }),
+                          )
+                        }
+                        if (input && row?.ownerID && row.ownerID !== input.ownerID) {
+                          return
+                        }
+                        const seq = input?.seq ?? latest + 1
+                        if (input && seq !== latest + 1) {
+                          yield* Effect.die(
+                            new InvalidDurableEventError({
+                              type: event.type,
+                              message: `Sequence mismatch for aggregate ${aggregateID}: expected ${latest + 1}, got ${seq}`,
+                            }),
+                          )
+                        }
+                        if (persist) {
+                          const stored = yield* db
+                            .select({ aggregateID: EventTable.aggregate_id, seq: EventTable.seq })
+                            .from(EventTable)
+                            .where(eq(EventTable.id, event.id))
+                            .get()
+                            .pipe(Effect.orDie)
+                          if (stored)
+                            yield* Effect.die(
+                              new InvalidDurableEventError({
+                                type: event.type,
+                                message: `Event ${event.id} already exists at aggregate ${stored.aggregateID} sequence ${stored.seq}`,
+                              }),
+                            )
+                        }
+                        const committed = {
+                          ...event,
+                          durable: { aggregateID, seq, version: durable.version },
+                        } as Event.Payload
+                        const route = yield* prepareRoutes([committed])
+                        for (const projector of list) {
+                          yield* projector(committed)
+                        }
+                        if (commit) yield* commit(seq)
+                        yield* db
+                          .insert(EventSequenceTable)
+                          .values([{ aggregate_id: aggregateID, seq, owner_id: input?.ownerID }])
+                          .onConflictDoUpdate({
+                            target: EventSequenceTable.aggregate_id,
+                            set: {
+                              seq: sql`max(${EventSequenceTable.seq}, ${seq})`,
+                              ...(input?.ownerID && row?.ownerID == null ? { owner_id: input.ownerID } : {}),
+                            },
+                          })
+                          .run()
+                          .pipe(Effect.orDie)
+                        if (persist)
+                          yield* db
+                            .insert(EventTable)
+                            .values([
+                              {
+                                id: event.id,
+                                aggregate_id: aggregateID,
+                                seq,
+                                created: event.created ?? 0,
+                                type: versionedType(definition.type, durable.version),
+                                data: encoded,
+                              },
+                            ])
+                            .run()
+                            .pipe(Effect.orDie)
+                        return { aggregateID, seq, event: committed, route }
+                      }),
+                    { behavior: "immediate" },
+                  )
+                  .pipe(Effect.orDie)
+                if (committed) {
+                  committed.route()
+                  yield* Effect.forEach(
+                    pubsub.durable.get(committed.aggregateID) ?? [],
+                    (wake) => PubSub.publish(wake, undefined),
+                    { discard: true },
+                  )
+                }
+                return committed
+              }),
+            )
           })
         }
 
@@ -865,16 +859,12 @@ export function configured(options?: Options) {
                 aggregateID: input.aggregateID,
                 ...(target >= 0 ? { seq: Event.Seq.make(target) } : {}),
               }
-              const replay: Stream.Stream<LogItem> = readThrough(target).pipe(
-                Stream.map((event): LogItem => event),
-                Stream.concat(Stream.make(marker)),
-              )
+              const replay: Stream.Stream<LogItem> = readThrough(target).pipe(Stream.concat(Stream.make(marker)))
               if (!wakes) return replay
               const live: Stream.Stream<LogItem> = Stream.fromSubscription(wakes).pipe(
                 Stream.mapEffect(() => latestSequence(db, input.aggregateID)),
                 Stream.filter((target) => target > sequence),
                 Stream.flatMap((target) => readThrough(target)),
-                Stream.map((event): LogItem => event),
               )
               return Stream.concat(replay, live)
             }),

packages/core/src/config.ts

@@ -4,9 +4,7 @@ import { makeLocationNode } from "@opencode-ai/util/effect/app-node"
 import path from "path"
 import { isDeepStrictEqual } from "node:util"
 import { type ParseError, parse } from "jsonc-parser"
-import { applyEdits, modify } from "jsonc-parser"
 import { Context, Effect, Layer, Option, PubSub, Ref, Schema, Semaphore, Stream } from "effect"
-import { produce, type Draft } from "immer"
 import {
   AgentsDirectory,
   ClaudeDirectory,
@@ -16,7 +14,6 @@ import {
   type Entry,
   Event,
 } from "@opencode-ai/schema/config"
-import { isRecord } from "@opencode-ai/ai/utils/record"
 import { Credential } from "./credential.js"
 import { Bus } from "./bus.js"
 import { Watcher } from "./filesystem/watcher.js"
@@ -36,8 +33,6 @@ export function latest<K extends keyof Info>(entries: readonly Entry[], key: K):
 export interface Interface {
   /** Returns location config documents and discovery sources from lowest to highest priority. */
   readonly entries: () => Effect.Effect<Entry[]>
-  /** Updates the first file-backed configuration document. */
-  readonly update: (update: (draft: Draft<Info>) => void) => Effect.Effect<Info, UpdateError>
   /**
    * Streams raw filesystem updates under config roots. Config owns root
    * topology and watch reconciliation; domain owners filter this feed for the
@@ -46,11 +41,6 @@ export interface Interface {
   readonly changes: () => Stream.Stream<Watcher.Update>
 }
 
-export class UpdateError extends Schema.TaggedError<UpdateError>()("Config.UpdateError", {
-  message: Schema.String,
-  cause: Schema.optional(Schema.Defect()),
-}) {}
-
 export const Options = Schema.Struct({
   project: Schema.optional(Schema.Boolean),
   // false skips the global config dir, ~/.claude, and ~/.agents; wellknown,
@@ -80,20 +70,6 @@ export const testLayer = (initial: Entry[] = []) =>
       const updates = yield* PubSub.unbounded<Watcher.Update>()
       const service = Test.of({
         entries: () => Ref.get(entries),
-        update: (update) =>
-          Effect.gen(function* () {
-            const current = yield* Ref.get(entries)
-            const index = current.findIndex((entry) => entry.type === "document" && entry.path !== undefined)
-            const entry = current[index]
-            if (!entry || entry.type !== "document")
-              return yield* Effect.fail(new UpdateError({ message: "No editable config document found" }))
-            const info = yield* Effect.try({
-              try: () => produce(entry.info, update),
-              catch: (cause) => new UpdateError({ message: "Config update failed", cause }),
-            })
-            yield* Ref.set(entries, current.with(index, new Document({ type: "document", path: entry.path, info })))
-            return info
-          }),
         changes: () => Stream.fromPubSub(updates),
         setEntries: (next) => Ref.set(entries, next),
         emitChange: (update) => PubSub.publish(updates, update).pipe(Effect.asVoid),
@@ -400,54 +376,10 @@ export const layer = (options?: Options) =>
       )
       yield* reconcile(initial)
 
-      const update = Effect.fn("Config.update")((mutate: (draft: Draft<Info>) => void) =>
-        reloadLock.withPermit(
-          Effect.gen(function* () {
-            // TODO: Replace entry-order selection with an explicit config scope/target model.
-            const document = configs.find((entry) => entry.type === "document" && entry.path !== undefined)
-            if (!document || document.type !== "document" || !document.path)
-              return yield* Effect.fail(new UpdateError({ message: "No editable config document found" }))
-            const next = yield* Effect.try({
-              try: () => produce(document.info, mutate),
-              catch: (cause) => new UpdateError({ message: "Config update failed", cause }),
-            })
-            const edits = changes(document.info, next)
-            if (!edits.length) return document.info
-            const text = yield* fs
-              .readFileString(document.path)
-              .pipe(
-                Effect.mapError(
-                  (cause) => new UpdateError({ message: `Failed to read config: ${document.path}`, cause }),
-                ),
-              )
-            const updated = edits.reduce(
-              (text, edit) =>
-                applyEdits(
-                  text,
-                  modify(text, edit.path, edit.value, { formattingOptions: { tabSize: 2, insertSpaces: true } }),
-                ),
-              text,
-            )
-            const info = yield* parseInfo(updated, document.path)
-            if (!info)
-              return yield* Effect.fail(new UpdateError({ message: `Invalid config update: ${document.path}` }))
-            const temporary = document.path + ".tmp"
-            yield* fs.writeFileString(temporary, updated.endsWith("\n") ? updated : updated + "\n").pipe(
-              Effect.andThen(fs.rename(temporary, document.path)),
-              Effect.mapError(
-                (cause) => new UpdateError({ message: `Failed to write config: ${document.path}`, cause }),
-              ),
-            )
-            return info
-          }),
-        ),
-      )
-
       return Service.of({
         entries: Effect.fnUntraced(function* () {
           return configs
         }),
-        update,
         changes: () => Stream.fromPubSub(updates),
       })
     }),
@@ -462,17 +394,3 @@ export function configured(options?: Options) {
 }
 
 export const node = configured()
-
-type Edit = { readonly path: (string | number)[]; readonly value: unknown }
-
-function changes(before: unknown, after: unknown, path: (string | number)[] = []): Edit[] {
-  if (Object.is(before, after)) return []
-  if (isRecord(before) && isRecord(after)) {
-    return [...new Set([...Object.keys(before), ...Object.keys(after)])].flatMap((key) => {
-      if (!(key in after)) return [{ path: [...path, key], value: undefined }]
-      if (!(key in before)) return [{ path: [...path, key], value: after[key] }]
-      return changes(before[key], after[key], [...path, key])
-    })
-  }
-  return [{ path, value: after }]
-}

packages/core/src/config/plugin/command.ts

@@ -87,7 +87,6 @@ export const Plugin = define({
                   ...input.prompt,
                   sessionID: input.sessionID,
                   text: yield* evaluateTemplate(command.template, input.prompt.text, {
-                    config,
                     location,
                     processes,
                     shell,
@@ -152,7 +151,6 @@ function evaluateTemplate(
   template: string,
   input: string,
   services: {
-    readonly config: Config.Interface
     readonly location: Location.Info
     readonly processes: AppProcess.Interface
     readonly shell: ShellSelect.Interface

packages/core/src/config/plugin/reference.ts

@@ -20,14 +20,13 @@ export const Plugin = define({
     const global = yield* Global.Service
     const loaded = yield* ConfigEntryObserver.observe(config, ctx.event, ctx.reference.reload())
     yield* ctx.reference.transform((draft) => {
-      const entries = new Map<string, Reference.Source>()
       for (const doc of loaded.entries.filter((entry): entry is Document => entry.type === "document")) {
         const directory = doc.path ? path.dirname(doc.path) : location.directory
         for (const [name, entry] of Object.entries(doc.info.references ?? {})) {
           if (!validAlias(name)) continue
           const description = typeof entry === "string" ? undefined : entry.description
           const hidden = typeof entry === "string" ? undefined : entry.hidden
-          entries.set(
+          draft.add(
             name,
             local(entry)
               ? Reference.LocalSource.make({
@@ -48,7 +47,6 @@ export const Plugin = define({
           )
         }
       }
-      for (const [name, source] of entries) draft.add(name, source)
     })
   }),
 })

packages/core/src/database/drizzle/README.md

@@ -0,0 +1,35 @@
+# Effect Drizzle SQLite Adapter
+
+This subtree is an upstream-derived Drizzle ORM fork adapted to run SQLite query
+builders over Effect's generic `SqlClient`. It is maintained source, not
+generated output.
+
+## Provenance
+
+The implementation is derived from Drizzle ORM's Effect SQLite driver/session,
+SQLite Effect query builders, and shared query-builder utilities. The
+corresponding upstream source families are `drizzle-orm/src/effect-sqlite`,
+`drizzle-orm/src/sqlite-core`, and `drizzle-orm/src/utils.ts`.
+
+The exact upstream revision originally copied into this repository is unknown.
+The currently pinned `drizzle-orm` version is a compatibility dependency, not
+copy provenance.
+
+## Local Boundary
+
+The supported local entrypoint is `@opencode-ai/core/database/drizzle`, exposed
+as the `EffectDrizzleSqlite` namespace. OpenCode's database service consumes that
+facade from `database/database.ts`.
+
+Material local adaptations include:
+
+- a runtime-independent driver over Effect's generic `SqlClient`
+- local cache, mapping, and runtime-inspection helpers
+- suppressed statement tracing beneath the database operation boundary
+- explicit SQLite transactions and savepoints
+- native transaction delegation for Durable Object SQLite
+- deliberate query-builder variance annotations
+
+Preserve these adaptations when comparing or synchronizing upstream code.
+Focused regression coverage is in `test/database-drizzle.test.ts` and
+`test/sqlite-workerd.test.ts`.

packages/core/src/database/drizzle/effect-sqlite/driver.ts

@@ -36,14 +36,14 @@ export const DefaultServices = Layer.merge(EffectCache.Default, EffectLogger.Def
  *
  * @example
  * ```ts
- * import { SqliteClient } from '@effect/sql-sqlite-node';
- * import * as SQLiteDrizzle from 'drizzle-orm/effect-sqlite';
- * import * as Effect from 'effect/Effect';
+ * import { SqliteClient } from "@effect/sql-sqlite-node"
+ * import { EffectDrizzleSqlite } from "@opencode-ai/core/database/drizzle"
+ * import { Effect } from "effect"
  *
- * const db = yield* SQLiteDrizzle.make({ relations }).pipe(
- *   Effect.provide(SQLiteDrizzle.DefaultServices),
- *   Effect.provide(SqliteClient.layer({ filename: 'sqlite.db' })),
- * );
+ * const db = yield* EffectDrizzleSqlite.make({ relations }).pipe(
+ *   Effect.provide(EffectDrizzleSqlite.DefaultServices),
+ *   Effect.provide(SqliteClient.layer({ filename: "sqlite.db" })),
+ * )
  * ```
  */
 export const make = Effect.fn("SQLiteDrizzle.make")(function* <TRelations extends AnyRelations = EmptyRelations>(

packages/core/src/database/drizzle/sqlite-core/effect/update.ts

@@ -279,7 +279,7 @@ export class SQLiteEffectUpdateBase<
           : undefined
         on = on(
           new Proxy(
-            this.config.table._.columns,
+            getTableColumnsRuntime(this.config.table),
             new SelectionProxyHandler({ sqlAliasedBehavior: "sql", sqlBehavior: "sql" }),
           ) as any,
           from &&

packages/core/src/database/sqlite.workerd.ts

@@ -212,7 +212,7 @@ const nativeLayer = (config: Config) =>
     : Layer.effect(
         Sqlite.Native,
         Effect.die(
-          "workerd sqlite cannot open a database from a path; use Database.layerWith(sqliteLayer({ storage }))",
+          "workerd sqlite cannot open a database from a path; use Database.layerFromClient.pipe(Layer.provide(sqliteLayer({ storage })))",
         ),
       )
 

packages/core/src/database/v1-migration.bun.ts

@@ -275,22 +275,22 @@ export function transformSession(input: TransformInput): TransformResult {
       if (paired.has(item.row.id)) return []
       const owned = byMessage.get(item.row.id)?.map((part) => part.value) ?? []
       if (item.value.role === "user") {
-        const compaction = owned.find((part) => part.type === "compaction")
-        if (compaction?.type === "compaction") {
+        const compaction = owned.find((part): part is SessionV1.CompactionPart => part.type === "compaction")
+        if (compaction) {
           const pairedSummary = messages.find(
-            (candidate) =>
+            (candidate): candidate is (typeof messages)[number] & { value: SessionV1.Assistant } =>
               candidate.value.role === "assistant" &&
               candidate.value.parentID === item.row.id &&
-              candidate.value.summary,
+              candidate.value.summary === true,
           )
-          if (!pairedSummary || pairedSummary.value.role !== "assistant") return []
+          if (!pairedSummary) return []
           paired.add(pairedSummary.row.id)
           if (pairedSummary.value.error || pairedSummary.value.time.completed === undefined) return []
           const summary = pairedSummary
           const summaryText = (byMessage.get(summary.row.id) ?? [])
             .map((part) => part.value)
-            .filter((part) => part.type === "text" && part.text.length > 0)
-            .map((part) => (part.type === "text" ? part.text : ""))
+            .filter((part): part is SessionV1.TextPart => part.type === "text" && part.text.length > 0)
+            .map((part) => part.text)
             .join("\n\n")
           const tailIndex = compaction.tail_start_id
             ? messages.findIndex((candidate) => candidate.row.id === compaction.tail_start_id)
@@ -313,16 +313,14 @@ export function transformSession(input: TransformInput): TransformResult {
           ]
         }
         const subtasks = owned.filter((part) => part.type === "subtask")
-        const visible = owned.filter((part) => part.type === "text" && !part.ignored)
-        const files = owned.filter((part) => part.type === "file")
-        const agents = owned.filter((part) => part.type === "agent")
+        const visible = owned.filter((part): part is SessionV1.TextPart => part.type === "text" && !part.ignored)
+        const files = owned.filter((part): part is SessionV1.FilePart => part.type === "file")
+        const agents = owned.filter((part): part is SessionV1.AgentPart => part.type === "agent")
         if (subtasks.length > 0 && visible.length === 0 && files.length === 0 && agents.length === 0) return []
-        const ordinary = visible.filter((part) => part.type === "text" && !part.synthetic)
-        const synthetic = visible.filter((part) => part.type === "text" && part.synthetic)
-        const attachments = files.flatMap((part) => (part.type === "file" ? migrateFile(part) : []))
-        const unavailable = files.flatMap((part) =>
-          part.type === "file" && !part.url.startsWith("data:") ? [unavailableFile(part)] : [],
-        )
+        const ordinary = visible.filter((part) => !part.synthetic)
+        const synthetic = visible.filter((part) => part.synthetic)
+        const attachments = files.flatMap((part) => migrateFile(part))
+        const unavailable = files.flatMap((part) => (!part.url.startsWith("data:") ? [unavailableFile(part)] : []))
         const text = owned
           .flatMap((part) => {
             if (part.type === "text" && !part.ignored && !part.synthetic) return [part.text]
@@ -330,16 +328,12 @@ export function transformSession(input: TransformInput): TransformResult {
             return []
           })
           .join("\n\n")
-        const agentAttachments = agents.map((part) =>
-          part.type === "agent"
-            ? {
-                name: part.name,
-                ...(part.source
-                  ? { mention: { text: part.source.value, start: part.source.start, end: part.source.end } }
-                  : {}),
-              }
-            : { name: "" },
-        )
+        const agentAttachments = agents.map((part) => ({
+          name: part.name,
+          ...(part.source
+            ? { mention: { text: part.source.value, start: part.source.start, end: part.source.end } }
+            : {}),
+        }))
         if (
           ordinary.length === 0 &&
           unavailable.length === 0 &&
@@ -351,7 +345,7 @@ export function transformSession(input: TransformInput): TransformResult {
             row(item.row, {
               id: item.row.id,
               type: "synthetic",
-              text: synthetic.map((part) => (part.type === "text" ? part.text : "")).join("\n\n"),
+              text: synthetic.map((part) => part.text).join("\n\n"),
               time: { created: item.row.time_created },
             }),
           ]
@@ -369,7 +363,7 @@ export function transformSession(input: TransformInput): TransformResult {
           row(item.row, {
             id: syntheticID(item.row.id, used),
             type: "synthetic",
-            text: synthetic.map((part) => (part.type === "text" ? part.text : "")).join("\n\n"),
+            text: synthetic.map((part) => part.text).join("\n\n"),
             time: { created: item.row.time_created },
           }),
         ]
@@ -443,7 +437,6 @@ export function transformSession(input: TransformInput): TransformResult {
     })
     .map((item, seq) => ({ ...item, seq }))
   const assistants = messages
-    .filter((item) => item.value.role === "assistant")
     .map((item) => item.value)
     .filter((item): item is SessionV1.Assistant => item.role === "assistant")
   const latestUser = messages.findLast((item) => {
@@ -488,7 +481,7 @@ export function status(): Effect.Effect<Status, never, Database.Service> {
     if (runtimeState.status === "error") return runtimeState
     if (state?.phase === "completed") return { status: "completed" as const }
     return { status: "required" as const }
-  }).pipe(Effect.orDie)
+  })
 }
 
 export const layer = Layer.effectDiscard(
@@ -528,76 +521,75 @@ export function run(options: Options = {}): Effect.Effect<RunResult, never, Data
       const state = yield* readState(db)
       if (state?.phase === "completed") return { status: "completed" as const }
       if (!(yield* hasLegacySessions(db))) return { status: "completed" as const }
-      const migrate = Effect.gen(function* () {
-        const now = Date.now()
-        yield* db.run(sql`
+      const now = Date.now()
+      yield* db.run(sql`
           INSERT OR IGNORE INTO project (id, worktree, time_created, time_updated, sandboxes)
           VALUES (${Project.ID.global}, ${path.parse(global.data).root}, ${now}, ${now}, '[]')
         `)
-        if (state === undefined)
-          yield* db
-            .transaction((tx) =>
-              Effect.gen(function* () {
-                while (true) {
-                  yield* tx.run(sql`
+      if (state === undefined)
+        yield* db
+          .transaction((tx) =>
+            Effect.gen(function* () {
+              while (true) {
+                yield* tx.run(sql`
                     DELETE FROM event
                     WHERE rowid IN (SELECT rowid FROM event LIMIT ${EVENT_DELETE_BATCH_SIZE})
                   `)
-                  const deleted = (yield* tx.get<{ value: number }>(sql`SELECT changes() AS value`))?.value ?? 0
-                  if (deleted < EVENT_DELETE_BATCH_SIZE) break
-                  yield* Effect.yieldNow
-                }
-                yield* tx
-                  .insert(KVTable)
-                  .values({ key: MIGRATION_STATE_KEY, value: { phase: "sessions" } })
-                  .run()
-              }),
-            )
-            .pipe(Effect.orDie)
-        const sourceTotal = yield* countNextSessions(nextPath(options, global.data))
-        const legacyTotal = (yield* db.get<{ value: number }>(sql`SELECT COUNT(*) AS value FROM session`))?.value ?? 0
-        const cursor = state?.phase === "sessions" ? state.cursor : undefined
-        const migrated =
-          cursor !== undefined
-            ? ((yield* db.get<{ value: number }>(sql`SELECT COUNT(*) AS value FROM session WHERE id >= ${cursor}`))
-                ?.value ?? 0)
-            : 0
-        const denominator = sourceTotal + legacyTotal
-        updateProgress({ label: "Migrating sessions", numerator: migrated, denominator })
-        yield* importNextDatabase(db, nextPath(options, global.data), (completed) => {
-          updateProgress({ label: "Migrating sessions", numerator: migrated + completed, denominator })
-        })
-        updateProgress({ label: "Migrating sessions", numerator: migrated + sourceTotal, denominator })
-        const projects = new Set(
-          (yield* db.all<{ id: string }>(sql`SELECT id FROM project`)).map((project) => project.id),
-        )
-        while (true) {
-          const state = yield* readState(db)
-          const cursorValue = state?.phase === "sessions" ? state.cursor : undefined
-          const nextID = yield* db.get<{ id: string; project_id: string }>(
-            cursorValue === undefined
-              ? sql`SELECT id, project_id FROM session ORDER BY id DESC LIMIT 1`
-              : sql`SELECT id, project_id FROM session WHERE id < ${cursorValue} ORDER BY id DESC LIMIT 1`,
+                const deleted = (yield* tx.get<{ value: number }>(sql`SELECT changes() AS value`))?.value ?? 0
+                if (deleted < EVENT_DELETE_BATCH_SIZE) break
+                yield* Effect.yieldNow
+              }
+              yield* tx
+                .insert(KVTable)
+                .values({ key: MIGRATION_STATE_KEY, value: { phase: "sessions" } })
+                .run()
+            }),
           )
-          if (!nextID) break
-          yield* db
-            .transaction((tx) =>
-              Effect.gen(function* () {
-                yield* tx
-                  .insert(KVTable)
-                  .values({ key: MIGRATION_STATE_KEY, value: { phase: "sessions", cursor: nextID.id } })
-                  .onConflictDoUpdate({
-                    target: KVTable.key,
-                    set: { value: { phase: "sessions", cursor: nextID.id }, time_updated: Date.now() },
-                  })
-                  .run()
-                const projectID = projects.has(nextID.project_id) ? nextID.project_id : Project.ID.global
-                if (projectID !== nextID.project_id)
-                  yield* Effect.logWarning("Reassigned V1 session with missing project", {
-                    sessionID: nextID.id,
-                    projectID: nextID.project_id,
-                  })
-                yield* tx.run(sql`
+          .pipe(Effect.orDie)
+      const sourceTotal = yield* countNextSessions(nextPath(options, global.data))
+      const legacyTotal = (yield* db.get<{ value: number }>(sql`SELECT COUNT(*) AS value FROM session`))?.value ?? 0
+      const cursor = state?.phase === "sessions" ? state.cursor : undefined
+      const migrated =
+        cursor !== undefined
+          ? ((yield* db.get<{ value: number }>(sql`SELECT COUNT(*) AS value FROM session WHERE id >= ${cursor}`))
+              ?.value ?? 0)
+          : 0
+      const denominator = sourceTotal + legacyTotal
+      updateProgress({ label: "Migrating sessions", numerator: migrated, denominator })
+      yield* importNextDatabase(db, nextPath(options, global.data), (completed) => {
+        updateProgress({ label: "Migrating sessions", numerator: migrated + completed, denominator })
+      })
+      updateProgress({ label: "Migrating sessions", numerator: migrated + sourceTotal, denominator })
+      const projects = new Set(
+        (yield* db.all<{ id: string }>(sql`SELECT id FROM project`)).map((project) => project.id),
+      )
+      while (true) {
+        const state = yield* readState(db)
+        const cursorValue = state?.phase === "sessions" ? state.cursor : undefined
+        const nextID = yield* db.get<{ id: string; project_id: string }>(
+          cursorValue === undefined
+            ? sql`SELECT id, project_id FROM session ORDER BY id DESC LIMIT 1`
+            : sql`SELECT id, project_id FROM session WHERE id < ${cursorValue} ORDER BY id DESC LIMIT 1`,
+        )
+        if (!nextID) break
+        yield* db
+          .transaction((tx) =>
+            Effect.gen(function* () {
+              yield* tx
+                .insert(KVTable)
+                .values({ key: MIGRATION_STATE_KEY, value: { phase: "sessions", cursor: nextID.id } })
+                .onConflictDoUpdate({
+                  target: KVTable.key,
+                  set: { value: { phase: "sessions", cursor: nextID.id }, time_updated: Date.now() },
+                })
+                .run()
+              const projectID = projects.has(nextID.project_id) ? nextID.project_id : Project.ID.global
+              if (projectID !== nextID.project_id)
+                yield* Effect.logWarning("Reassigned V1 session with missing project", {
+                  sessionID: nextID.id,
+                  projectID: nextID.project_id,
+                })
+              yield* tx.run(sql`
                   INSERT OR IGNORE INTO session_v2 (
                     id, project_id, workspace_id, parent_id, slug, directory, path, title, version, share_url,
                     summary_additions, summary_deletions, summary_files, summary_diffs, metadata, cost,
@@ -612,81 +604,79 @@ export function run(options: Options = {}): Effect.Effect<RunResult, never, Data
                   FROM session
                   WHERE id = ${nextID.id}
                 `)
-                const next = yield* tx
-                  .select()
-                  .from(SessionTable)
-                  .where(eq(SessionTable.id, SessionSchema.ID.make(nextID.id)))
-                  .get()
-                if (!next) return yield* Effect.die(new Error(`Failed to copy V1 session ${nextID.id}`))
-                const sourceMessages = yield* tx.all<SourceMessage>(
-                  sql`SELECT id, session_id, time_created, time_updated, data FROM message WHERE session_id = ${next.id}`,
-                )
-                const sourceParts = yield* tx.all<SourcePart>(
-                  sql`SELECT id, message_id, session_id, time_created, time_updated, data FROM part WHERE session_id = ${next.id}`,
-                )
-                const transformed = transformSession({ session: next, messages: sourceMessages, parts: sourceParts })
-                yield* Effect.forEach(transformed.warnings, (warning) =>
-                  Effect.logWarning("Skipped V1 migration row", warning),
-                )
-                yield* tx.delete(SessionMessageTable).where(eq(SessionMessageTable.session_id, next.id)).run()
-                yield* Effect.forEach(transformed.messages, (message) =>
-                  tx
-                    .insert(SessionMessageTable)
-                    .values({
-                      id: SessionMessage.ID.make(message.id),
-                      session_id: SessionSchema.ID.make(message.session_id),
-                      type: message.type,
-                      seq: message.seq,
-                      time_created: message.time_created,
-                      time_updated: message.time_updated,
-                      data: sql`${JSON.stringify(message.data)}`,
-                    })
-                    .run(),
-                )
-                yield* tx
-                  .update(SessionTable)
-                  .set({ ...transformed.session, time_updated: next.time_updated })
-                  .where(eq(SessionTable.id, next.id))
-                  .run()
-                yield* tx
-                  .insert(EventSequenceTable)
-                  .values({ aggregate_id: next.id, seq: transformed.watermark })
-                  .onConflictDoUpdate({
-                    target: EventSequenceTable.aggregate_id,
-                    set: { seq: transformed.watermark, owner_id: null },
+              const next = yield* tx
+                .select()
+                .from(SessionTable)
+                .where(eq(SessionTable.id, SessionSchema.ID.make(nextID.id)))
+                .get()
+              if (!next) return yield* Effect.die(new Error(`Failed to copy V1 session ${nextID.id}`))
+              const sourceMessages = yield* tx.all<SourceMessage>(
+                sql`SELECT id, session_id, time_created, time_updated, data FROM message WHERE session_id = ${next.id}`,
+              )
+              const sourceParts = yield* tx.all<SourcePart>(
+                sql`SELECT id, message_id, session_id, time_created, time_updated, data FROM part WHERE session_id = ${next.id}`,
+              )
+              const transformed = transformSession({ session: next, messages: sourceMessages, parts: sourceParts })
+              yield* Effect.forEach(transformed.warnings, (warning) =>
+                Effect.logWarning("Skipped V1 migration row", warning),
+              )
+              yield* tx.delete(SessionMessageTable).where(eq(SessionMessageTable.session_id, next.id)).run()
+              yield* Effect.forEach(transformed.messages, (message) =>
+                tx
+                  .insert(SessionMessageTable)
+                  .values({
+                    id: SessionMessage.ID.make(message.id),
+                    session_id: SessionSchema.ID.make(message.session_id),
+                    type: message.type,
+                    seq: message.seq,
+                    time_created: message.time_created,
+                    time_updated: message.time_updated,
+                    data: sql`${JSON.stringify(message.data)}`,
                   })
-                  .run()
-              }),
-            )
-            .pipe(Effect.orDie)
-          if (runtimeState.status === "running")
-            runtimeState = {
-              status: "running",
-              progress: {
-                label: "Migrating sessions",
-                numerator: (runtimeState.progress.numerator ?? 0) + 1,
-                denominator,
-              },
-            }
-          yield* Effect.yieldNow
-        }
-        yield* db
-          .transaction((tx) =>
-            Effect.gen(function* () {
+                  .run(),
+              )
               yield* tx
-                .insert(KVTable)
-                .values({ key: MIGRATION_STATE_KEY, value: { phase: "completed" } })
+                .update(SessionTable)
+                .set({ ...transformed.session, time_updated: next.time_updated })
+                .where(eq(SessionTable.id, next.id))
+                .run()
+              yield* tx
+                .insert(EventSequenceTable)
+                .values({ aggregate_id: next.id, seq: transformed.watermark })
                 .onConflictDoUpdate({
-                  target: KVTable.key,
-                  set: { value: { phase: "completed" }, time_updated: Date.now() },
+                  target: EventSequenceTable.aggregate_id,
+                  set: { seq: transformed.watermark, owner_id: null },
                 })
                 .run()
             }),
           )
           .pipe(Effect.orDie)
-        return { status: "completed" as const }
-      })
-      return yield* migrate
+        if (runtimeState.status === "running")
+          runtimeState = {
+            status: "running",
+            progress: {
+              label: "Migrating sessions",
+              numerator: (runtimeState.progress.numerator ?? 0) + 1,
+              denominator,
+            },
+          }
+        yield* Effect.yieldNow
+      }
+      yield* db
+        .transaction((tx) =>
+          Effect.gen(function* () {
+            yield* tx
+              .insert(KVTable)
+              .values({ key: MIGRATION_STATE_KEY, value: { phase: "completed" } })
+              .onConflictDoUpdate({
+                target: KVTable.key,
+                set: { value: { phase: "completed" }, time_updated: Date.now() },
+              })
+              .run()
+          }),
+        )
+        .pipe(Effect.orDie)
+      return { status: "completed" as const }
     }).pipe(Effect.orDie),
   )
 }
@@ -715,7 +705,7 @@ function countNextSessions(sourcePath: string | undefined) {
       if (!isNextDatabase(source)) return 0
       return source.query<{ value: number }, []>("SELECT COUNT(*) AS value FROM session").get()?.value ?? 0
     }),
-  ).pipe(Effect.orElseSucceed(() => 0))
+  )
 }
 
 function importNextDatabase(

packages/core/src/environment/memory.ts

@@ -61,21 +61,23 @@ export const makeMemoryDriver = (): MemoryDriver => {
   }
   const failed = (value: string, cause: unknown) => new Failed({ path: value, cause })
   const overrides: FilesImpl = {
-    stat: (value) => {
-      const node = lookup(value)
-      return node ? Effect.succeed(info(node)) : Effect.fail(new NotFound({ path: value }))
-    },
-    read: (value, range) => {
-      const original = lookup(value)
-      if (!original) return Effect.fail(new NotFound({ path: value }))
-      if (original.type === "directory") return Effect.fail(new WrongKind({ path: value, actual: "directory" }))
-      const resolved = resolveKey(value, true)
-      const node = resolved === undefined ? undefined : nodes.get(resolved)
-      if (!node) return Effect.fail(new NotFound({ path: value }))
-      if (node.type !== "file") return Effect.fail(new WrongKind({ path: value, actual: node.type }))
-      const bytes = range === undefined ? node.bytes : node.bytes.subarray(range.offset, range.offset + range.length)
-      return Effect.succeed({ info: info(node), bytes: bytes.slice() })
-    },
+    stat: (value) =>
+      Effect.suspend(() => {
+        const node = lookup(value)
+        return node ? Effect.succeed(info(node)) : Effect.fail(new NotFound({ path: value }))
+      }),
+    read: (value, range) =>
+      Effect.gen(function* () {
+        const original = lookup(value)
+        if (!original) return yield* new NotFound({ path: value })
+        if (original.type === "directory") return yield* new WrongKind({ path: value, actual: "directory" })
+        const resolved = resolveKey(value, true)
+        const node = resolved === undefined ? undefined : nodes.get(resolved)
+        if (!node) return yield* new NotFound({ path: value })
+        if (node.type !== "file") return yield* new WrongKind({ path: value, actual: node.type })
+        const bytes = range === undefined ? node.bytes : node.bytes.subarray(range.offset, range.offset + range.length)
+        return { info: info(node), bytes: bytes.slice() }
+      }),
     write: (value, bytes) =>
       Effect.try({
         try: () => {
@@ -89,17 +91,17 @@ export const makeMemoryDriver = (): MemoryDriver => {
         },
         catch: (cause) => failed(value, cause),
       }),
-    list: (value) => {
-      const target = resolveKey(value, true) ?? key(value)
-      const node = nodes.get(target)
-      if (!node) return Effect.fail(new NotFound({ path: value }))
-      if (node.type !== "directory") return Effect.fail(new WrongKind({ path: value, actual: node.type }))
-      const entries = [...nodes.entries()]
-        .filter(([entry]) => entry !== target && path.posix.dirname(entry) === target)
-        .map(([entry, child]) => ({ name: path.posix.basename(entry), type: child.type satisfies FileType }))
-        .sort((a, b) => a.name.localeCompare(b.name))
-      return Effect.succeed(entries)
-    },
+    list: (value) =>
+      Effect.gen(function* () {
+        const target = resolveKey(value, true) ?? key(value)
+        const node = nodes.get(target)
+        if (!node) return yield* new NotFound({ path: value })
+        if (node.type !== "directory") return yield* new WrongKind({ path: value, actual: node.type })
+        return [...nodes.entries()]
+          .filter(([entry]) => entry !== target && path.posix.dirname(entry) === target)
+          .map(([entry, child]) => ({ name: path.posix.basename(entry), type: child.type satisfies FileType }))
+          .sort((a, b) => a.name.localeCompare(b.name))
+      }),
     remove: (value) =>
       Effect.sync(() => {
         const target = resolveKey(value, false) ?? key(value)
@@ -107,32 +109,33 @@ export const makeMemoryDriver = (): MemoryDriver => {
           if (entry === target || entry.startsWith(`${target}/`)) nodes.delete(entry)
         }
       }),
-    move: (from, to) => {
-      const source = resolveKey(from, false) ?? key(from)
-      const node = nodes.get(source)
-      if (!node) return Effect.fail(new NotFound({ path: from }))
-      return Effect.try({
-        try: () => {
-          const requested = resolveKey(to, false) ?? key(to)
-          const destination =
-            nodes.get(requested)?.type === "directory"
-              ? path.posix.join(requested, path.posix.basename(source))
-              : requested
-          if (node.type === "directory" && destination.startsWith(`${source}/`)) {
-            throw new Error(`Cannot move a directory into itself: ${from}`)
-          }
-          const existing = nodes.get(destination)
-          if (node.type === "directory" && existing && existing.type !== "directory") {
-            throw new Error(`Cannot overwrite a non-directory with a directory: ${to}`)
-          }
-          requireParent(destination)
-          const moved = [...nodes.entries()].filter(([entry]) => entry === source || entry.startsWith(`${source}/`))
-          for (const [entry] of moved) nodes.delete(entry)
-          for (const [entry, child] of moved) nodes.set(`${destination}${entry.slice(source.length)}`, child)
-        },
-        catch: (cause) => failed(from, cause),
-      })
-    },
+    move: (from, to) =>
+      Effect.gen(function* () {
+        const source = resolveKey(from, false) ?? key(from)
+        const node = nodes.get(source)
+        if (!node) return yield* new NotFound({ path: from })
+        yield* Effect.try({
+          try: () => {
+            const requested = resolveKey(to, false) ?? key(to)
+            const destination =
+              nodes.get(requested)?.type === "directory"
+                ? path.posix.join(requested, path.posix.basename(source))
+                : requested
+            if (node.type === "directory" && destination.startsWith(`${source}/`)) {
+              throw new Error(`Cannot move a directory into itself: ${from}`)
+            }
+            const existing = nodes.get(destination)
+            if (node.type === "directory" && existing && existing.type !== "directory") {
+              throw new Error(`Cannot overwrite a non-directory with a directory: ${to}`)
+            }
+            requireParent(destination)
+            const moved = [...nodes.entries()].filter(([entry]) => entry === source || entry.startsWith(`${source}/`))
+            for (const [entry] of moved) nodes.delete(entry)
+            for (const [entry, child] of moved) nodes.set(`${destination}${entry.slice(source.length)}`, child)
+          },
+          catch: (cause) => failed(from, cause),
+        })
+      }),
     mkdir: (value) => Effect.try({ try: () => mkdirSync(value), catch: (cause) => failed(value, cause) }),
   }
 

packages/core/src/file-mutation.ts

@@ -62,9 +62,8 @@ export const syncTextBom = Effect.fn("FileMutation.syncTextBom")(function* (
 const transactionLocks = KeyedMutex.makeUnsafe<string>()
 
 /**
- * Serialize file changes by absolute target. Conditional writes compare and
- * write under the same process-local lock so cooperating OpenCode mutations do
- * not overwrite changes made from the same stale content.
+ * Mutation locking is process-local and serializes cooperating OpenCode
+ * changes; external writes can still race.
  */
 const layer = Layer.effect(
   Service,
@@ -129,7 +128,6 @@ export const node = makeLocationNode({ service: Service, layer, deps: [Environme
 /**
  * Deferred until the corresponding integrations exist.
  */
-// TODO: Add formatter integration after formatter runtime exists.
 // TODO: Publish watcher/file-edit events after watcher integration exists.
 // TODO: Add snapshots / undo after snapshot design exists.
 // TODO: Notify LSP and collect diagnostics after LSP runtime exists.

packages/core/src/filesystem/search.ts

@@ -135,7 +135,7 @@ export const fffLayer = Layer.effect(
         find: () => Effect.succeed([]),
       })
     }
-    yield* Effect.addFinalizer(() => Effect.sync(() => result.value.destroy()).pipe(Effect.ignore))
+    yield* Effect.addFinalizer(() => Effect.sync(() => result.value.destroy()))
     return Service.of({
       find: (input) =>
         Effect.sync(() => {

packages/core/src/github-copilot/README.md

@@ -1,5 +1,38 @@
-This is a temporary package used primarily for GitHub Copilot compatibility.
+# GitHub Copilot AI SDK Adapters
 
-These DO NOT apply for openai-compatible providers or majority of providers supporting completions/responses apis. THIS IS ONLY FOR GITHUB COPILOT!!!
+This directory contains upstream-derived AI SDK implementations adapted for
+GitHub Copilot. It is not a generic OpenAI-compatible provider.
 
-Avoid making edits to these files
+## Provenance
+
+- `chat/` is derived from the Vercel AI SDK
+  `@ai-sdk/openai-compatible` chat implementation.
+- `responses/` is derived from the Vercel AI SDK `@ai-sdk/openai` Responses
+  implementation.
+- The exact upstream revisions originally copied into this repository are
+  unknown. Current dependency versions and the `VERSION` constant in
+  `copilot-provider.ts` are not copy provenance.
+
+## Ownership
+
+Keep `chat/` and `responses/` structurally close to their upstream modules, but
+preserve the intentional Copilot adaptations: the `copilot` options and metadata
+namespace, `thinking_budget`, reasoning text and opaque reasoning, stateless
+Responses requests with encrypted reasoning, rotating response item IDs, and
+explicit function-tool strictness taking precedence over the global fallback.
+
+`copilot-provider.ts` is the local adapter assembly entrypoint used by
+`plugin/provider/github-copilot.ts`. `models.ts` is OpenCode-owned catalog
+reconciliation, not vendored SDK code. Authentication, request headers, model
+routing, and integration lifecycle are also owned by the provider plugin.
+
+When updating the upstream-shaped modules, compare against both source packages
+and reapply the documented Copilot adaptations. Focused regression coverage is
+in:
+
+- `test/github-copilot/copilot-chat-model.test.ts`
+- `test/github-copilot/convert-to-copilot-messages.test.ts`
+- `test/github-copilot/openai-responses-language-model.test.ts`
+- `test/github-copilot/openai-responses-prepare-tools.test.ts`
+- `test/github-copilot/models.test.ts`
+- `test/plugin/provider-github-copilot.test.ts`

packages/core/src/github-copilot/chat/openai-compatible-chat-language-model.ts

@@ -653,7 +653,11 @@ export class OpenAICompatibleChatLanguageModel implements LanguageModelV3 {
             }
 
             if (isActiveText) {
-              controller.enqueue({ type: "text-end", id: "txt-0" })
+              controller.enqueue({
+                type: "text-end",
+                id: "txt-0",
+                providerMetadata: reasoningOpaque ? { copilot: { reasoningOpaque } } : undefined,
+              })
             }
 
             // go through all tool calls and send the ones that are not finished

packages/core/src/image/photon.ts

@@ -3,7 +3,7 @@ import { Effect } from "effect"
 import path from "node:path"
 import { fileURLToPath } from "node:url"
 import { FileSystem } from "../filesystem.js"
-import { DecodeError, ResizerUnavailableError, SizeError } from "../image.js"
+import { DecodeError, ResizerUnavailableError, SizeError, type Limits } from "../image.js"
 
 const JPEG_QUALITIES = [80, 85, 70, 55, 40]
 
@@ -33,12 +33,7 @@ export const make = Effect.gen(function* () {
   return Effect.fn("Image.Photon.normalize")(function* (
     resource: string,
     content: FileSystem.Content & { readonly encoding: "base64" },
-    limits: {
-      readonly autoResize: boolean
-      readonly maxWidth: number
-      readonly maxHeight: number
-      readonly maxBase64Bytes: number
-    },
+    limits: Readonly<Limits>,
   ) {
     const photon = yield* loadPhoton
     const decoded = yield* Effect.try({

packages/core/src/instance.ts

@@ -23,7 +23,6 @@ import { Mcp } from "./mcp/index.js"
 import { Permission } from "./permission.js"
 import { Plugin } from "./plugin.js"
 import { PluginHooks } from "./plugin/hooks.js"
-import { PluginExecution } from "./plugin/execution.js"
 import { InstancePlugins } from "./plugin/instance.js"
 import { PluginSupervisor } from "./plugin/supervisor.js"
 import { Worktree } from "./worktree.js"
@@ -68,7 +67,6 @@ const nodes = [
   AISDK.node,
   Plugin.node,
   PluginHooks.node,
-  PluginExecution.node,
   InstancePlugins.node,
   PluginSupervisor.node,
   Worktree.refreshNode,

packages/core/src/job.ts

@@ -213,7 +213,7 @@ export const make = Effect.gen(function* () {
         return [{ info: snapshot(next), done: job.done, scope: job.scope }, new Map(jobs).set(id, next)]
       }),
     )
-    if (result.info && result.done) yield* Deferred.succeed(result.done, result.info).pipe(Effect.ignore)
+    if (result.info && result.done) yield* Deferred.succeed(result.done, result.info)
     if (result.scope) {
       yield* Scope.close(result.scope, Exit.void).pipe(Effect.forkIn(state.scope, { startImmediately: true }))
     }
@@ -346,8 +346,7 @@ export const make = Effect.gen(function* () {
         return [{ info: snapshot(next), backgrounded: job.backgrounded }, new Map(jobs).set(id, next)]
       }),
     )
-    if (result.info && result.backgrounded)
-      yield* Deferred.succeed(result.backgrounded, result.info).pipe(Effect.ignore)
+    if (result.info && result.backgrounded) yield* Deferred.succeed(result.backgrounded, result.info)
     return result.info
   })
 
@@ -396,7 +395,7 @@ export const make = Effect.gen(function* () {
         return [{ info: snapshot(next), done: job.done, scope: job.scope }, new Map(jobs).set(id, next)]
       }),
     )
-    if (result.info && result.done) yield* Deferred.succeed(result.done, result.info).pipe(Effect.ignore)
+    if (result.info && result.done) yield* Deferred.succeed(result.done, result.info)
     if (result.scope) yield* Scope.close(result.scope, Exit.void)
     return result.info
   })

packages/core/src/location-services.ts

@@ -37,6 +37,7 @@ export function buildLocationServiceMap(
         ...inner,
         get: (ref: Location.Ref) => inner.get(canonical(ref)),
         contextEffect: (ref: Location.Ref) => inner.contextEffect(canonical(ref)),
+        contextEffectOption: (ref: Location.Ref) => inner.contextEffectOption(canonical(ref)),
         invalidate: (ref: Location.Ref) => inner.invalidate(canonical(ref)),
       }),
     ),

packages/core/src/mcp/client.ts

@@ -10,17 +10,14 @@ import {
   CallToolResultSchema,
   ElicitationCompleteNotificationSchema,
   ElicitRequestSchema,
-  GetPromptResultSchema,
   type Implementation,
   type ElicitRequestFormParams,
   type ElicitRequestParams,
   type ElicitRequestURLParams,
   type ElicitResult,
-  ListPromptsResultSchema,
   ListRootsRequestSchema,
   ListToolsResultSchema,
   PromptListChangedNotificationSchema,
-  PromptSchema,
   ResourceListChangedNotificationSchema,
   type LoggingMessageNotification,
   LoggingMessageNotificationSchema,
@@ -29,6 +26,7 @@ import {
 } from "@modelcontextprotocol/sdk/types.js"
 import { Cause, Effect, Exit, Schema } from "effect"
 import { ConfigMCP } from "@opencode-ai/schema/config/mcp"
+import type { Session } from "@opencode-ai/schema/session"
 import { McpStdio } from "./stdio.js"
 
 const DEFAULT_STARTUP_TIMEOUT = 30_000
@@ -41,10 +39,6 @@ const toError = (error: unknown) => (error instanceof Error ? error : new Error(
 const TolerantListToolsResult = ListToolsResultSchema.extend({
   tools: ToolSchema.omit({ outputSchema: true }).array(),
 })
-const TolerantListPromptsResult = ListPromptsResultSchema.extend({
-  prompts: PromptSchema.array(),
-})
-
 export class NeedsAuthError extends Schema.TaggedError<NeedsAuthError>()("MCP.NeedsAuthError", {
   server: Schema.String,
 }) {
@@ -163,6 +157,7 @@ export interface Connection {
   readonly callTool: (input: {
     readonly name: string
     readonly args?: Record<string, unknown>
+    readonly sessionID?: Session.ID
   }) => Effect.Effect<CallToolResult, Error>
   readonly onClose: (callback: () => void) => void
   /** Registers a callback fired when the server emits an MCP logging notification. */
@@ -301,12 +296,8 @@ export const connect = Effect.fnUntraced(function* (
           const prompts = yield* Effect.tryPromise({
             try: () =>
               paginate(
-                async (cursor) => {
-                  const params = cursor === undefined ? undefined : { cursor }
-                  return client.request({ method: "prompts/list", params }, TolerantListPromptsResult, {
-                    timeout: catalogTimeout,
-                  })
-                },
+                (cursor) =>
+                  client.listPrompts(cursor === undefined ? undefined : { cursor }, { timeout: catalogTimeout }),
                 (result) => result.prompts,
               ),
             catch: toError,
@@ -396,11 +387,7 @@ export const connect = Effect.fnUntraced(function* (
       prompt: (input) =>
         Effect.tryPromise({
           try: (signal) =>
-            client.request(
-              { method: "prompts/get", params: { name: input.name, arguments: input.args ?? {} } },
-              GetPromptResultSchema,
-              { signal, timeout: executionTimeout },
-            ),
+            client.getPrompt({ name: input.name, arguments: input.args ?? {} }, { signal, timeout: executionTimeout }),
           catch: toError,
         }).pipe(
           Effect.map((result) => ({
@@ -411,7 +398,11 @@ export const connect = Effect.fnUntraced(function* (
         Effect.tryPromise({
           try: (signal) =>
             client.callTool(
-              { name: input.name, arguments: input.args ?? {} },
+              {
+                name: input.name,
+                arguments: input.args ?? {},
+                ...(input.sessionID === undefined ? {} : { _meta: { sessionID: input.sessionID } }),
+              },
               CallToolResultSchema,
               // Keep progress tokens available while enforcing a hard wall-clock execution timeout.
               { signal, timeout: executionTimeout, onprogress: () => {} },

packages/core/src/mcp/index.ts

@@ -3,6 +3,7 @@ export * as Mcp from "./index.js"
 import { Mcp } from "@opencode-ai/schema/mcp"
 import { McpEvent } from "@opencode-ai/schema/mcp-event"
 import { ephemeral } from "@opencode-ai/schema/event"
+import type { Session } from "@opencode-ai/schema/session"
 import { createHash } from "node:crypto"
 import { isDeepStrictEqual } from "node:util"
 import { Cause, Context, Effect, Exit, FiberSet, Latch, Layer, Schema, Scope, Stream, Types } from "effect"
@@ -153,6 +154,7 @@ export interface Interface extends State.Transformable<Draft> {
     readonly server: ServerName | string
     readonly name: string
     readonly args?: Record<string, unknown>
+    readonly sessionID?: Session.ID
   }) => Effect.Effect<ToolResult, NotFoundError | ToolCallError>
   readonly instructions: () => Effect.Effect<ServerInstructions[]>
   readonly prompts: () => Effect.Effect<Prompt[]>
@@ -473,11 +475,11 @@ export const layer = (options?: Options) =>
             Effect.gen(function* () {
               entry.status = { status: "failed", error: "Connection closed" }
               yield* stopServer(name, entry)
-              yield* bus.publish(McpEvent.StatusChanged, { server: name }).pipe(Effect.ignore)
+              yield* bus.publish(McpEvent.StatusChanged, { server: name })
             }),
           ),
         )
-        connection.onLog((message) => fork(serverLog(name, message).pipe(Effect.ignore)))
+        connection.onLog((message) => fork(serverLog(name, message)))
         connection.onToolsChanged(() =>
           live(
             refreshTools(name, entry, connection).pipe(
@@ -512,7 +514,7 @@ export const layer = (options?: Options) =>
           // Announce the handshake so connect() and credential reconnects don't show a stale
           // disabled/failed status for the duration of the connection attempt.
           entry.status = { status: "pending" }
-          yield* bus.publish(McpEvent.StatusChanged, { server: name }).pipe(Effect.ignore)
+          yield* bus.publish(McpEvent.StatusChanged, { server: name })
           const scope = yield* Scope.fork(root)
           entry.scope = scope
           const authProvider = yield* connectProvider(entry)
@@ -543,9 +545,9 @@ export const layer = (options?: Options) =>
             // Announce the new tool set so the tool registry registers it. A server that finishes connecting
             // after the initial registration sweep and emits no list-changed notification would otherwise
             // stay invisible to the model.
-            yield* bus.publish(McpEvent.ToolsChanged, { server: name }).pipe(Effect.ignore)
-            yield* bus.publish(McpEvent.ResourcesChanged, { server: name }).pipe(Effect.ignore)
-            yield* bus.publish(McpEvent.StatusChanged, { server: name }).pipe(Effect.ignore)
+            yield* bus.publish(McpEvent.ToolsChanged, { server: name })
+            yield* bus.publish(McpEvent.ResourcesChanged, { server: name })
+            yield* bus.publish(McpEvent.StatusChanged, { server: name })
             whenLive(name, entry, result.value.connection)(refreshPrompts(name, entry, result.value.connection))
             return
           }
@@ -557,7 +559,7 @@ export const layer = (options?: Options) =>
               ? { status: "needs_auth" }
               : { status: "failed", error: error instanceof Error ? error.message : String(error) }
           yield* Effect.logWarning("mcp connect failed", { server: name, status: entry.status })
-          yield* bus.publish(McpEvent.StatusChanged, { server: name }).pipe(Effect.ignore)
+          yield* bus.publish(McpEvent.StatusChanged, { server: name })
         }).pipe(Effect.ensuring(entry.startup.open))
 
       const stopServer = Effect.fnUntraced(function* (name: ServerName, entry: ServerEntry) {
@@ -568,9 +570,9 @@ export const layer = (options?: Options) =>
         entry.tools = undefined
         entry.prompts = undefined
         yield* Scope.close(scope, Exit.void)
-        yield* bus.publish(McpEvent.ToolsChanged, { server: name }).pipe(Effect.ignore)
-        yield* bus.publish(McpEvent.ResourcesChanged, { server: name }).pipe(Effect.ignore)
-        yield* bus.publish(PromptsChanged, { server: name }).pipe(Effect.ignore)
+        yield* bus.publish(McpEvent.ToolsChanged, { server: name })
+        yield* bus.publish(McpEvent.ResourcesChanged, { server: name })
+        yield* bus.publish(PromptsChanged, { server: name })
       })
 
       const disposeServer = Effect.fnUntraced(function* (name: ServerName, entry: ServerEntry) {
@@ -592,7 +594,7 @@ export const layer = (options?: Options) =>
           yield* register(name, entry)
           if (serverConfig.disabled) {
             entry.status = { status: "disabled" }
-            yield* bus.publish(McpEvent.StatusChanged, { server: name }).pipe(Effect.ignore)
+            yield* bus.publish(McpEvent.StatusChanged, { server: name })
             return
           }
           yield* startServer(name, entry)
@@ -608,7 +610,7 @@ export const layer = (options?: Options) =>
         yield* disposeServer(name, entry)
         // Credentials are keyed by name + URL and intentionally survive removal for a later re-add.
         entries.delete(name)
-        yield* bus.publish(McpEvent.StatusChanged, { server: name }).pipe(Effect.ignore)
+        yield* bus.publish(McpEvent.StatusChanged, { server: name })
       })
 
       let applied: Map<ServerName, Mcp.ServerConfig> | undefined
@@ -631,7 +633,7 @@ export const layer = (options?: Options) =>
             if (entry.config.disabled) {
               entry.status = { status: "disabled" }
               entry.startup.openUnsafe()
-              yield* bus.publish(McpEvent.StatusChanged, { server: name }).pipe(Effect.ignore)
+              yield* bus.publish(McpEvent.StatusChanged, { server: name })
               continue
             }
             fork(startServer(name, entry).pipe(locks.withLock(name)))
@@ -673,7 +675,6 @@ export const layer = (options?: Options) =>
         bus.subscribe(Credential.Event.Switched).pipe(
           Stream.filter((event) => owned.has(event.data.integrationID)),
           Stream.runForEach((event) => Effect.sync(() => fork(reconnect(event.data.integrationID)))),
-          Effect.ignore,
         ),
       )
       const state = State.create<Data, Draft>({
@@ -738,7 +739,7 @@ export const layer = (options?: Options) =>
             const target = yield* requireServer(name)
             yield* stopServer(name, target.entry)
             target.entry.status = { status: "disabled" }
-            yield* bus.publish(McpEvent.StatusChanged, { server: name }).pipe(Effect.ignore)
+            yield* bus.publish(McpEvent.StatusChanged, { server: name })
           }).pipe(locks.withLock(name))
         }),
         remove: Effect.fn("MCP.remove")(function* (server) {
@@ -763,7 +764,7 @@ export const layer = (options?: Options) =>
               message: "MCP server is not connected",
             })
           const result = yield* target.entry.client
-            .callTool({ name: input.name, args: input.args })
+            .callTool({ name: input.name, args: input.args, sessionID: input.sessionID })
             .pipe(
               Effect.mapError(
                 (error) => new ToolCallError({ server: target.name, tool: input.name, message: error.message }),

packages/core/src/mcp/oauth.ts

@@ -213,20 +213,11 @@ export const authorize = (input: {
       return toCredential({ methodID: input.methodID, serverUrl: input.config.url, tokens, client })
     })
 
-    const result = yield* Effect.tryPromise({
+    yield* Effect.tryPromise({
       try: () => auth(oauthProvider, { serverUrl: input.config.url, scope: oauth?.scope }),
       catch: (error) => (error instanceof Error ? error : new Error(String(error))),
     })
 
-    // The provider may already hold valid tokens (e.g. a re-auth), in which case there is no browser step.
-    if (result === "AUTHORIZED") {
-      return {
-        url: input.config.url,
-        instructions: `Connected to ${input.name}.`,
-        mode: "auto" as const,
-        callback: finalize,
-      }
-    }
     if (!authorizationUrl)
       return yield* Effect.fail(new Error(`MCP server "${input.name}" did not provide an authorization URL`))
 

packages/core/src/persistent-pty/daemon.ts

@@ -59,6 +59,13 @@ export const WireResponse = Schema.Union([
     cursor_x: Schema.Number,
     cursor_y: Schema.Number,
   }),
+  Schema.Struct({
+    type: Schema.Literal("rows"),
+    terminal: WireTerminal,
+    lines: Schema.Array(Schema.String),
+    cursor_x: Schema.Number,
+    cursor_y: Schema.Number,
+  }),
   Schema.Struct({
     type: Schema.Literal("attached"),
     terminal: WireTerminal,

packages/core/src/persistent-pty/index.ts

@@ -4,7 +4,7 @@ import os from "node:os"
 import path from "node:path"
 import { Context, Effect, Layer, Schema } from "effect"
 import { makeGlobalNode } from "@opencode-ai/util/effect/app-node"
-import { Added, Handoff, Removed } from "@opencode-ai/schema/persistent-pty"
+import { Added, Handoff, PersistentPty, ReadLines, Removed, type ReadResult } from "@opencode-ai/schema/persistent-pty"
 import { Session } from "@opencode-ai/schema/session"
 import { Bus } from "../bus.js"
 import { Pty } from "@opencode-ai/schema/pty"
@@ -26,19 +26,9 @@ export { Handoff } from "@opencode-ai/schema/persistent-pty"
 export const Options = Schema.Struct({ handoff: Schema.optional(Handoff) })
 export type Options = typeof Options.Type
 
-export type Info = Pty.Info & {
-  readonly sessionID: Session.ID
-  readonly foregroundProcess: string | null
-  readonly size: { readonly cols: number; readonly rows: number }
-  readonly output: { readonly head: number; readonly tail: number }
-}
+export type Info = PersistentPty.Info
 
-export type Snapshot = {
-  readonly info: Info
-  readonly text: string
-  readonly checkpoint: Uint8Array
-  readonly cursor: { readonly x: number; readonly y: number }
-}
+export type Snapshot = PersistentPty.Snapshot
 
 export type Attachment = {
   readonly info: Info
@@ -103,6 +93,7 @@ export interface Interface {
     data: Uint8Array,
   ) => Effect.Effect<void, NotFoundError | UnavailableError>
   readonly snapshot: (id: Pty.ID) => Effect.Effect<Snapshot, NotFoundError | UnavailableError>
+  readonly read: (sessionID: Session.ID, lines?: number) => Effect.Effect<ReadResult | null, UnavailableError>
   readonly remove: (id: Pty.ID) => Effect.Effect<void, NotFoundError | UnavailableError>
   readonly shutdown: () => Effect.Effect<void, UnavailableError>
   readonly handoff: () => Effect.Effect<Handoff | null, UnavailableError>
@@ -140,6 +131,8 @@ export const configured = (options: Options = {}) =>
         options.handoff,
       ).pipe(Effect.mapError(unavailable))
       const removing = new Set<Pty.ID>()
+      // Controller activity selects a terminal; observer reads and pane visibility do not.
+      const current = new Map<Session.ID, Pty.ID>()
 
       const list = Effect.fn("PersistentPty.list")(function* (sessionID?: Session.ID) {
         const response = yield* optionalRequest(daemon, { op: "list" })
@@ -158,15 +151,7 @@ export const configured = (options: Options = {}) =>
 
       const create = Effect.fn("PersistentPty.create")(function* (
         sessionID: Session.ID,
-        input: {
-          readonly command?: string
-          readonly args: readonly string[]
-          readonly cwd?: string
-          readonly title: string
-          readonly env: Readonly<Record<string, string>>
-          readonly cols?: number
-          readonly rows?: number
-        },
+        input: Parameters<Interface["create"]>[1],
       ) {
         const response = yield* request(
           daemon,
@@ -207,7 +192,7 @@ export const configured = (options: Options = {}) =>
         rows: number,
         attachmentID?: string,
       ) {
-        yield* get(id)
+        const terminal = yield* get(id)
         const response = yield* request(daemon, {
           op: "resize",
           id: fromID(id),
@@ -216,6 +201,7 @@ export const configured = (options: Options = {}) =>
           rows,
         })
         if (response.type !== "ok") return yield* unexpected(response)
+        current.set(terminal.sessionID, id)
         return undefined
       })
 
@@ -225,7 +211,7 @@ export const configured = (options: Options = {}) =>
         cols: number,
         rows: number,
       ) {
-        yield* get(id)
+        const terminal = yield* get(id)
         const response = yield* request(daemon, {
           op: "control",
           id: fromID(id),
@@ -234,6 +220,7 @@ export const configured = (options: Options = {}) =>
           rows,
         })
         if (response.type !== "ok") return yield* unexpected(response)
+        current.set(terminal.sessionID, id)
         return undefined
       })
 
@@ -244,7 +231,7 @@ export const configured = (options: Options = {}) =>
         rows: number,
         data: Uint8Array,
       ) {
-        yield* get(id)
+        const terminal = yield* get(id)
         const response = yield* request(daemon, {
           op: "input",
           id: fromID(id),
@@ -254,6 +241,7 @@ export const configured = (options: Options = {}) =>
           data_base64: Buffer.from(data).toString("base64"),
         })
         if (response.type !== "ok") return yield* unexpected(response)
+        current.set(terminal.sessionID, id)
         return undefined
       })
 
@@ -269,16 +257,46 @@ export const configured = (options: Options = {}) =>
         }
       })
 
+      const read = Effect.fn("PersistentPty.read")(function* (sessionID: Session.ID, lines?: number) {
+        if (lines !== undefined && !Schema.is(ReadLines)(lines))
+          return yield* new UnavailableError({ message: "lines must be an integer between 1 and 65535" })
+        const id = current.get(sessionID)
+        if (!id) return null
+        const terminal = yield* get(id).pipe(Effect.catchTag("PersistentPty.NotFoundError", () => Effect.succeed(null)))
+        if (!terminal || terminal.sessionID !== sessionID) {
+          if (current.get(sessionID) === id) current.delete(sessionID)
+          return null
+        }
+        // Let the daemon choose the live height in the same snapshot when lines is omitted.
+        const response = yield* request(daemon, { op: "read_rows", id: fromID(id), rows: lines })
+        if (response.type !== "rows") return yield* unexpected(response)
+        const info = toInfo(response.terminal)
+        return {
+          ptyID: info.id,
+          title: info.title,
+          cwd: info.cwd,
+          foregroundProcess: info.foregroundProcess,
+          screen: {
+            text: response.lines.join("\n"),
+            cols: info.size.cols,
+            rows: info.size.rows,
+            cursor: { x: response.cursor_x, y: response.cursor_y },
+          },
+        }
+      })
+
       const remove = Effect.fn("PersistentPty.remove")(function* (id: Pty.ID) {
         const terminal = yield* get(id)
         const response = yield* request(daemon, { op: "terminate", id: fromID(id) })
         if (response.type !== "ok") return yield* unexpected(response)
+        if (current.get(terminal.sessionID) === id) current.delete(terminal.sessionID)
         yield* bus.publish(Removed, { sessionID: terminal.sessionID, ptyID: id })
         return undefined
       })
 
       const shutdown = Effect.fn("PersistentPty.shutdown")(function* () {
         const response = yield* daemon.shutdown.pipe(Effect.mapError(unavailable))
+        current.clear()
         if (!response) return
         if (response.type !== "ok") return yield* unexpected(response)
       })
@@ -302,14 +320,7 @@ export const configured = (options: Options = {}) =>
 
       const attach = Effect.fn("PersistentPty.attach")(function* (
         id: Pty.ID,
-        input: {
-          readonly cursor: number
-          readonly attachmentID: string
-          readonly role: Role
-          readonly takeover?: boolean
-          readonly onEvent: (event: StreamEvent) => void
-          readonly onEnd: () => void
-        },
+        input: Parameters<Interface["attach"]>[1],
       ) {
         yield* get(id)
         const attachment = yield* daemon
@@ -321,6 +332,7 @@ export const configured = (options: Options = {}) =>
             },
           })
           .pipe(Effect.mapError(unavailable))
+        if (attachment.role === "controller") current.set(Session.ID.make(attachment.terminal.group_id), id)
         return {
           info: toInfo(attachment.terminal),
           role: attachment.role,
@@ -340,6 +352,7 @@ export const configured = (options: Options = {}) =>
         control,
         input,
         snapshot,
+        read,
         remove,
         shutdown,
         handoff,

packages/core/src/plugin.ts

@@ -1,5 +1,5 @@
 export * as Plugin from "./plugin.js"
-export { Event, ID, Info, Source, PackageStatus, OperationError } from "@opencode-ai/schema/plugin"
+export { Event, ID, Info, Source } from "@opencode-ai/schema/plugin"
 
 import { Plugin } from "@opencode-ai/schema/plugin"
 import type { Plugin as PluginDefinition } from "@opencode-ai/plugin/effect/plugin"
@@ -26,7 +26,6 @@ import { Vcs } from "./vcs.js"
 import { PluginHooks } from "./plugin/hooks.js"
 import { Generate } from "./generate.js"
 import { Permission } from "./permission.js"
-import { PluginExecution } from "./plugin/execution.js"
 
 export interface Interface {
   readonly activate: (
@@ -39,8 +38,6 @@ export interface Interface {
 export type Versioned = PluginDefinition & {
   readonly version: string
   readonly source?: Plugin.Source
-  readonly revision?: string
-  readonly generation?: string
 }
 
 export class Service extends Context.Service<Service, Interface>()("@opencode/Plugin") {}
@@ -50,12 +47,8 @@ const layer = Layer.effect(
   Effect.gen(function* () {
     const bus = yield* Bus.Service
     const kv = yield* KV.Service
-    const execution = yield* PluginExecution.Service
     const scope = yield* Scope.make()
-    const active = new Map<
-      Plugin.ID,
-      { readonly plugin: Versioned; readonly scope: Scope.Closeable; readonly error?: string }
-    >()
+    const active = new Map<Plugin.ID, { readonly plugin: Versioned; readonly scope: Scope.Closeable }>()
     const lock = Semaphore.makeUnsafe(1)
     let inventory: Plugin.Info[] = []
     let host: Parameters<PluginDefinition["effect"]>[0]
@@ -82,7 +75,7 @@ const layer = Layer.effect(
         "plugin.id": plugin.id,
         cause: loaded.cause,
       })
-      return { error: errorMessage(loaded.cause) } as const
+      return { error: Cause.pretty(loaded.cause) } as const
     })
 
     const activate = Effect.fn("Plugin.activate")(function* (
@@ -105,84 +98,55 @@ const layer = Layer.effect(
               return entry.plugin.id === definition?.id && entry.plugin.version === definition.version
             })
           ) {
-            const nextInventory = withFailures(
-              Array.from(active.values(), (entry) => activeInfo(entry.plugin, entry.error)),
-              failures,
-            )
+            const nextInventory = [...Array.from(active.values(), (entry) => activeInfo(entry.plugin)), ...failures]
             if (JSON.stringify(inventory) === JSON.stringify(nextInventory)) return
             inventory = nextInventory
             yield* bus.publish(Plugin.Event.Updated, {})
             return
           }
 
-          yield* execution.exclusive(
-            State.batch(
-              Effect.gen(function* () {
-                const nextInventory: Plugin.Info[] = []
-                // Registrations are append-ordered. Preserve the unchanged prefix, then rebuild the suffix.
-                const current = Array.from(active.values(), (entry) => entry.plugin)
-                const prefix = definitions.findIndex(
-                  (definition, index) =>
-                    definition.id !== current[index]?.id || definition.version !== current[index]?.version,
-                )
-                const keep = prefix === -1 ? definitions.length : prefix
-                const previousEntries = new Map(active)
-                const closing = Array.from(active.entries()).slice(keep).toReversed()
-                yield* Effect.forEach(
-                  closing,
-                  ([id, entry]) =>
-                    Effect.gen(function* () {
-                      yield* Scope.close(entry.scope, Exit.void).pipe(
-                        Effect.catchCause((cause) =>
-                          Effect.logWarning("failed to clean up plugin", { "plugin.id": id, cause }),
-                        ),
-                      )
-                      active.delete(id)
-                    }),
-                  { discard: true },
-                )
-                for (const [index, definition] of definitions.entries()) {
-                  if (index < keep) {
-                    nextInventory.push(activeInfo(definition, active.get(definition.id)?.error))
-                    continue
-                  }
-                  const previous = previousEntries.get(definition.id)
+          yield* State.batch(
+            Effect.gen(function* () {
+              const nextInventory: Plugin.Info[] = []
+              for (const definition of definitions) {
+                const previous = active.get(definition.id)
+                active.delete(definition.id)
+                if (previous) yield* Scope.close(previous.scope, Exit.void)
 
-                  const loaded = yield* load(definition)
-                  if (loaded.scope !== undefined) {
-                    active.set(definition.id, { plugin: definition, scope: loaded.scope })
-                    nextInventory.push(activeInfo(definition))
-                    continue
-                  }
-                  const failed: Plugin.Info = {
-                    id: definition.id,
-                    source: definition.source ?? { type: "builtin" },
-                    status: "failed",
-                    error: loaded.error,
-                    tui: definition.tui ?? false,
-                    ...(definition.revision === undefined ? {} : { revision: definition.revision }),
-                    ...(definition.generation === undefined ? {} : { generation: definition.generation }),
-                  }
-
-                  if (!previous) {
-                    nextInventory.push(failed)
-                    continue
-                  }
-                  const restored = yield* load(previous.plugin)
-                  if (restored.scope !== undefined) {
-                    active.set(definition.id, { plugin: previous.plugin, scope: restored.scope, error: loaded.error })
-                    nextInventory.push({ ...activeInfo(previous.plugin), error: loaded.error })
-                    continue
-                  }
-                  yield* Effect.logError("failed to restore plugin; deactivating", {
-                    "plugin.id": definition.id,
-                  })
-                  nextInventory.push(failed)
+                const loaded = yield* load(definition)
+                if (loaded.scope !== undefined) {
+                  active.set(definition.id, { plugin: definition, scope: loaded.scope })
+                  nextInventory.push(activeInfo(definition))
+                  continue
                 }
+                nextInventory.push({
+                  id: definition.id,
+                  source: definition.source ?? { type: "builtin" },
+                  status: "failed",
+                  error: loaded.error,
+                  tui: definition.tui ?? false,
+                })
 
-                inventory = withFailures(nextInventory, failures)
-              }),
-            ).pipe(Effect.uninterruptible),
+                if (!previous) continue
+                const restored = yield* load(previous.plugin)
+                if (restored.scope !== undefined) {
+                  active.set(definition.id, { plugin: previous.plugin, scope: restored.scope })
+                  continue
+                }
+                yield* Effect.logError("failed to restore plugin; deactivating", {
+                  "plugin.id": definition.id,
+                })
+              }
+
+              const removed = Array.from(active.entries())
+                .filter(([id]) => !ids.has(id))
+                .toReversed()
+              removed.forEach(([id]) => active.delete(id))
+              yield* Effect.forEach(removed, ([, entry]) => Scope.close(entry.scope, Exit.void), {
+                discard: true,
+              })
+              inventory = [...nextInventory, ...failures]
+            }),
           )
           yield* bus.publish(Plugin.Event.Updated, {})
         }),
@@ -207,41 +171,15 @@ const layer = Layer.effect(
   }),
 )
 
-function activeInfo(plugin: Versioned, error?: string): Plugin.Info {
+function activeInfo(plugin: Versioned): Plugin.Info {
   return {
     id: Plugin.ID.make(plugin.id),
     source: plugin.source ?? { type: "builtin" },
     status: "active",
     tui: plugin.tui ?? false,
-    ...(plugin.revision === undefined ? {} : { revision: plugin.revision }),
-    ...(plugin.generation === undefined ? {} : { generation: plugin.generation }),
-    ...(error === undefined ? {} : { error }),
   }
 }
 
-/** Inventory errors must not expose credentials or unbounded import/setup traces. */
-export function errorMessage(cause: Cause.Cause<unknown>) {
-  return Cause.pretty(cause)
-    .replace(/https?:\/\/[^\s"'<>]+/g, (value) => {
-      if (!URL.canParse(value)) return "[URL]"
-      const url = new URL(value)
-      url.username = ""
-      url.password = ""
-      url.search = ""
-      url.hash = ""
-      return url.href
-    })
-    .slice(0, 2000)
-}
-
-function withFailures(active: Plugin.Info[], failures: readonly Extract<Plugin.Info, { readonly status: "failed" }>[]) {
-  return failures.reduce((inventory, failure) => {
-    const index = inventory.findIndex((entry) => JSON.stringify(entry.source) === JSON.stringify(failure.source))
-    if (index === -1) return [...inventory, failure]
-    return inventory.map((entry, current) => (current === index ? { ...entry, error: failure.error } : entry))
-  }, active)
-}
-
 export const node = makeLocationNode({
   service: Service,
   layer,
@@ -265,6 +203,5 @@ export const node = makeLocationNode({
     WebSearch.node,
     Generate.node,
     Permission.node,
-    PluginExecution.node,
   ],
 })

packages/core/src/plugin/command.ts

@@ -84,7 +84,9 @@ export const Plugin = define({
 })
 
 function append(template: string, input: string) {
-  return [template, input.trim()].filter(Boolean).join("\n\n")
+  const value = input.trim()
+  if (template.includes("$ARGUMENTS")) return template.replaceAll("$ARGUMENTS", () => value)
+  return [template, value].filter(Boolean).join("\n\n")
 }
 
 function parseArguments(input: string) {

packages/core/src/plugin/execution.ts

@@ -1,74 +0,0 @@
-export * as PluginExecution from "./execution.js"
-
-import { Context, Effect, Latch, Layer, Semaphore } from "effect"
-import { makeLocationNode } from "@opencode-ai/util/effect/app-node"
-
-export interface Interface {
-  readonly lease: <A, E, R>(
-    session: { readonly id: string; readonly parentID?: string; readonly admission?: boolean },
-    effect: Effect.Effect<A, E, R>,
-  ) => Effect.Effect<A, E, R>
-  readonly exclusive: <A, E, R>(effect: Effect.Effect<A, E, R>) => Effect.Effect<A, E, R>
-}
-
-export class Service extends Context.Service<Service, Interface>()("@opencode/PluginExecution") {}
-
-export const layer = Layer.effect(
-  Service,
-  Effect.gen(function* () {
-    const admission = yield* Latch.make(true)
-    const idle = yield* Latch.make(true)
-    const mutations = yield* Semaphore.make(1)
-    const readers = new Map<string, number>()
-    let leases = 0
-
-    const acquire = (session: {
-      readonly id: string
-      readonly parentID?: string
-      readonly admission?: boolean
-    }): Effect.Effect<void> =>
-      Effect.suspend(() => {
-        // Child execution must finish the parent's tool call even while activation waits.
-        if (
-          !admission.isOpen() &&
-          !readers.has(session.id) &&
-          !(session.parentID && readers.has(session.parentID)) &&
-          !(session.admission && leases > 0)
-        )
-          return Effect.interruptible(admission.await).pipe(Effect.andThen(acquire(session)))
-        // Admission protects callbacks but does not establish Session execution ownership.
-        if (!session.admission) readers.set(session.id, (readers.get(session.id) ?? 0) + 1)
-        leases++
-        return idle.close
-      })
-
-    return Service.of({
-      lease: (session, effect) =>
-        Effect.acquireUseRelease(
-          acquire(session),
-          () => effect,
-          () =>
-            Effect.suspend(() => {
-              leases--
-              if (!session.admission) {
-                const count = (readers.get(session.id) ?? 1) - 1
-                if (count === 0) readers.delete(session.id)
-                else readers.set(session.id, count)
-              }
-              return leases === 0 ? idle.open : Effect.void
-            }),
-        ),
-      exclusive: (effect) =>
-        mutations.withPermit(
-          Effect.uninterruptibleMask((restore) =>
-            admission.close.pipe(
-              Effect.andThen(restore(idle.await).pipe(Effect.andThen(restore(effect)))),
-              Effect.ensuring(admission.open),
-            ),
-          ),
-        ),
-    })
-  }),
-)
-
-export const node = makeLocationNode({ service: Service, layer, deps: [] })

packages/core/src/plugin/host.ts

@@ -4,7 +4,6 @@ import { Plugin } from "@opencode-ai/plugin/effect"
 import type { IntegrationMethodRegistration } from "@opencode-ai/plugin/effect/integration"
 import { EventManifest } from "@opencode-ai/schema/event-manifest"
 import { ServerConfig } from "@opencode-ai/schema/mcp"
-import { OperationError } from "@opencode-ai/schema/plugin"
 import { App } from "../app.js"
 import { Effect, Schema, Stream } from "effect"
 import { Agent } from "../agent.js"
@@ -99,7 +98,7 @@ export const make = Effect.fn("PluginHost.make")(function* (plugin: Interface, p
       list: (input) => {
         const ref = locationRef(input)
         if (ref && !isCurrentLocation(ref)) return runtime.location.agent.list(ref)
-        return agents.list().pipe(Effect.map((data) => ({ location: locationInfo(), data })))
+        return response(agents.list())
       },
       reload: agents.reload,
       transform: (callback) =>
@@ -194,6 +193,11 @@ export const make = Effect.fn("PluginHost.make")(function* (plugin: Interface, p
     event: {
       subscribe: () => bus.subscribe().pipe(Stream.filter(EventManifest.isServer)),
     },
+    experimental: {
+      terminal: {
+        read: (input) => runtime.persistentPty.read(input.sessionID, input.lines),
+      },
+    },
     generate: {
       text: (input) => generate.text(input).pipe(Effect.map((text) => ({ text }))),
     },
@@ -328,10 +332,6 @@ export const make = Effect.fn("PluginHost.make")(function* (plugin: Interface, p
     },
     plugin: {
       list: () => response(plugin.list()),
-      // In-process management can wait on its own setup/tool lease. Use an external client instead.
-      check: () => Effect.fail(new OperationError({ message: "Check plugin updates through an external client." })),
-      update: () => Effect.fail(new OperationError({ message: "Update plugins through an external client." })),
-      reload: () => Effect.fail(new OperationError({ message: "Reload plugins through an external client." })),
     },
     reference: {
       list: () => response(reference.list()),

packages/core/src/plugin/models-dev.ts

@@ -37,7 +37,7 @@ export const ModelsDevPlugin = define({
         })
         for (const model of provider.models) {
           if (model.status === "deprecated") continue
-          catalog.model.update(provider.info.id, model.id, (draft) => Object.assign(draft, model))
+          catalog.model.update(provider.info.id, model.id, (draft) => Object.assign(draft, structuredClone(model)))
         }
       }
     })

packages/core/src/plugin/module.ts

@@ -36,22 +36,15 @@ const Definition = Schema.Struct({
 
 export const load = Effect.fn("PluginModule.load")(function* (
   operation: Extract<ConfigPluginSource.Operation, { type: "add" }>,
-  fresh?: Npm.EntryPoint,
 ) {
   const npm = yield* Npm.Service
-  const resolved =
-    fresh ??
-    (path.isAbsolute(operation.target)
-      ? { entrypoint: pathToFileURL(operation.target).href, revision: undefined, generation: undefined }
-      : yield* npm.add(operation.target, { subpaths: ["server", ""], refresh: true }))
-  const entrypoint = resolved.entrypoint
+  const entrypoint = path.isAbsolute(operation.target)
+    ? pathToFileURL(operation.target).href
+    : (yield* npm.add(operation.target, { subpaths: ["server", ""] })).entrypoint
   if (!entrypoint) return yield* Effect.fail(new Error(`Plugin entrypoint not found: ${operation.target}`))
   // Bun currently ignores query parameters when caching file:// imports.
-  const target =
-    typeof Bun !== "undefined" && path.isAbsolute(operation.target)
-      ? operation.target.replaceAll("\\", "/")
-      : entrypoint
-  const source = fresh || operation.mtime === undefined ? entrypoint : `${target}?mtime=${operation.mtime}`
+  const target = typeof Bun !== "undefined" ? operation.target.replaceAll("\\", "/") : entrypoint
+  const source = operation.mtime === undefined ? entrypoint : `${target}?mtime=${operation.mtime}`
   yield* Effect.log({ msg: "loading plugin", id: operation.target, entrypoint: source })
   const mod = yield* Effect.promise(() => importModule(source))
   const value = (yield* Schema.decodeUnknownEffect(Definition)(mod)).default
@@ -60,9 +53,7 @@ export const load = Effect.fn("PluginModule.load")(function* (
     id: plugin.id,
     tui: plugin.tui,
     vcs: plugin.vcs,
-    version: JSON.stringify([operation, resolved.generation]),
-    revision: resolved.revision,
-    generation: resolved.generation,
+    version: JSON.stringify(operation),
     source: path.isAbsolute(operation.target)
       ? { type: "local" as const, path: operation.target }
       : { type: "package" as const, package: operation.target },

packages/core/src/plugin/provider/amazon-bedrock.ts

@@ -4,7 +4,6 @@ import { define } from "@opencode-ai/plugin/effect/plugin"
 import { Provider } from "../../provider.js"
 
 type MantleSDK = {
-  languageModel: (modelID: string) => LanguageModelV3
   chat: (modelID: string) => LanguageModelV3
   responses: (modelID: string) => LanguageModelV3
 }

packages/core/src/plugin/provider/cloudflare-ai-gateway.ts

@@ -58,10 +58,8 @@ export const CloudflareAIGatewayPlugin = define({
         const config = gatewayConfig(evt.options)
         if (!config) return
         const metadata = gatewayMetadata(evt.options)
-        const { createAiGateway } = yield* Effect.promise(() => import("ai-gateway-provider")).pipe(Effect.orDie)
-        const { createUnified } = yield* Effect.promise(() => import("ai-gateway-provider/providers/unified")).pipe(
-          Effect.orDie,
-        )
+        const { createAiGateway } = yield* Effect.promise(() => import("ai-gateway-provider"))
+        const { createUnified } = yield* Effect.promise(() => import("ai-gateway-provider/providers/unified"))
         const gateway = createAiGateway({
           accountId: config.accountId,
           gateway: config.gatewayId,

packages/core/src/plugin/provider/dynamic.ts

@@ -1,8 +1,7 @@
 import { Effect } from "effect"
-import { pathToFileURL } from "url"
 import { define } from "@opencode-ai/plugin/effect/plugin"
 import { Npm } from "@opencode-ai/util/npm"
-import { importModule } from "@opencode-ai/util/runtime-import"
+import { loadSDKFactory } from "./sdk-factory.js"
 
 export const DynamicProviderPlugin = define({
   id: "opencode.provider.dynamic",
@@ -13,18 +12,7 @@ export const DynamicProviderPlugin = define({
       Effect.fn(function* (evt) {
         if (evt.sdk) return
 
-        const installedPath = evt.package.startsWith("file://")
-          ? evt.package
-          : (yield* npm.add(evt.package).pipe(Effect.orDie)).entrypoint
-        if (!installedPath) throw new Error(`Package ${evt.package} has no import entrypoint`)
-
-        const mod = (yield* Effect.promise(() =>
-          importModule(installedPath.startsWith("file://") ? installedPath : pathToFileURL(installedPath).href),
-        ).pipe(Effect.orDie)) as Record<string, (options: any) => any>
-        const match = Object.keys(mod).find((name) => name.startsWith("create"))
-        if (!match) throw new Error(`Package ${evt.package} has no provider factory export`)
-
-        evt.sdk = mod[match](evt.options)
+        evt.sdk = ((yield* loadSDKFactory(npm, evt.package)) as (options: any) => any)(evt.options)
       }),
     )
   }),

packages/core/src/plugin/provider/gitlab.ts

@@ -40,7 +40,7 @@ export const GitLabPlugin = define({
           typeof evt.options.featureFlags === "object" && evt.options.featureFlags ? evt.options.featureFlags : {}
         const id = evt.model.modelID ?? evt.model.id
         if (id.startsWith("duo-workflow-")) {
-          const gitlab = yield* Effect.promise(() => import("gitlab-ai-provider")).pipe(Effect.orDie)
+          const gitlab = yield* Effect.promise(() => import("gitlab-ai-provider"))
           const workflowRef =
             typeof evt.model.settings?.workflowRef === "string" ? evt.model.settings.workflowRef : undefined
           const workflowDefinition =

packages/core/src/plugin/provider/sap-ai-core.ts

@@ -1,9 +1,8 @@
 import { Effect } from "effect"
-import { pathToFileURL } from "url"
 import { define } from "@opencode-ai/plugin/effect/plugin"
 import { Npm } from "@opencode-ai/util/npm"
 import { Provider } from "../../provider.js"
-import { importModule } from "@opencode-ai/util/runtime-import"
+import { loadSDKFactory } from "./sdk-factory.js"
 
 export const SapAICorePlugin = define({
   id: "opencode.provider.sap.ai.core",
@@ -18,17 +17,7 @@ export const SapAICorePlugin = define({
           (typeof evt.options.serviceKey === "string" ? evt.options.serviceKey : undefined)
         if (serviceKey && !process.env.AICORE_SERVICE_KEY) process.env.AICORE_SERVICE_KEY = serviceKey
 
-        const installedPath = evt.package.startsWith("file://")
-          ? evt.package
-          : (yield* npm.add(evt.package).pipe(Effect.orDie)).entrypoint
-        if (!installedPath) return yield* Effect.die(new Error(`Package ${evt.package} has no import entrypoint`))
-
-        const mod = (yield* Effect.promise(() =>
-          importModule(installedPath.startsWith("file://") ? installedPath : pathToFileURL(installedPath).href),
-        )) as Record<string, unknown>
-        const match = Object.keys(mod).find((name) => name.startsWith("create"))
-        if (!match) return yield* Effect.die(new Error(`Package ${evt.package} has no provider factory export`))
-        const factory = mod[match]
+        const factory = yield* loadSDKFactory(npm, evt.package)
         if (typeof factory !== "function")
           return yield* Effect.die(new Error(`Package ${evt.package} provider factory export is not callable`))
 

packages/core/src/plugin/provider/sdk-factory.ts

@@ -0,0 +1,18 @@
+import { Effect } from "effect"
+import { pathToFileURL } from "url"
+import { Npm } from "@opencode-ai/util/npm"
+import { importModule } from "@opencode-ai/util/runtime-import"
+
+export const loadSDKFactory = Effect.fnUntraced(function* (npm: Npm.Interface, packageName: string) {
+  const installedPath = packageName.startsWith("file://")
+    ? packageName
+    : (yield* npm.add(packageName).pipe(Effect.orDie)).entrypoint
+  if (!installedPath) return yield* Effect.die(new Error(`Package ${packageName} has no import entrypoint`))
+
+  const mod = (yield* Effect.promise(() =>
+    importModule(installedPath.startsWith("file://") ? installedPath : pathToFileURL(installedPath).href),
+  )) as Record<string, unknown>
+  const match = Object.keys(mod).find((name) => name.startsWith("create"))
+  if (!match) return yield* Effect.die(new Error(`Package ${packageName} has no provider factory export`))
+  return mod[match]
+})

packages/core/src/plugin/runtime.ts

@@ -7,6 +7,7 @@ import { Job } from "../job.js"
 import { Location } from "../location.js"
 import { LocationServiceMap } from "../location-service-map.js"
 import { Mcp } from "../mcp/index.js"
+import { PersistentPty } from "../persistent-pty.js"
 import { Session } from "../session.js"
 
 export interface Interface {
@@ -29,6 +30,7 @@ export interface Interface {
     | "context"
   >
   readonly job: Pick<Job.Interface, "start" | "wait" | "block" | "background" | "cancel" | "completeBackground">
+  readonly persistentPty: Pick<PersistentPty.Interface, "read">
   readonly location: {
     readonly agent: {
       readonly list: (
@@ -90,6 +92,9 @@ export const layerWithCell = (cell: Cell) =>
         completeBackground: (notificationID) =>
           require(cell, (runtime) => runtime.job.completeBackground(notificationID)),
       },
+      persistentPty: {
+        read: (sessionID, lines) => require(cell, (runtime) => runtime.persistentPty.read(sessionID, lines)),
+      },
       location: {
         agent: {
           list: (ref) => require(cell, (runtime) => runtime.location.agent.list(ref)),
@@ -107,9 +112,11 @@ export const providerLayerWithCell = (cell: Cell) =>
       const sessions = yield* Session.Service
       const jobs = yield* Job.Service
       const locations = yield* LocationServiceMap.Service
+      const persistentPty = yield* PersistentPty.Service
       const runtime: Interface = {
         session: sessions,
         job: jobs,
+        persistentPty,
         location: {
           agent: {
             list: (ref) =>
@@ -162,7 +169,7 @@ export const providerNodeWithCell = (cell: Cell) =>
   makeGlobalNode({
     name: "plugin-runtime-provider",
     layer: providerLayerWithCell(cell),
-    deps: [node, Session.node, Job.node, LocationServiceMap.node],
+    deps: [node, Session.node, Job.node, LocationServiceMap.node, PersistentPty.node],
   })
 
 export const providerNode = providerNodeWithCell(defaultCell)

packages/core/src/plugin/skill.ts

@@ -50,7 +50,7 @@ export const Plugin = define({
 const reportContentWithDiagnostics = Effect.fn("SkillPlugin.reportContentWithDiagnostics")(function* (
   app: Context["app"],
 ) {
-  const plugins = yield* configuredPlugins().pipe(Effect.orElseSucceed(() => ["Unavailable: failed to inspect config"]))
+  const plugins = yield* configuredPlugins()
   return [
     ReportContent,
     "",

packages/core/src/plugin/skill/opencode.md

@@ -76,11 +76,13 @@ to every project for that user. Project configuration can live in any directory
 as `opencode.json(c)` or `.opencode/opencode.json(c)`, including nested packages
 in a monorepo.
 
-When OpenCode starts, it searches from the current directory up to the project
-root. It merges direct `opencode.json(c)` files from root to current directory,
+During ordinary project discovery, OpenCode searches the current Location
+directory and every ancestor through the filesystem root, including directories
+above the detected project or repository root. It merges direct
+`opencode.json(c)` files from the farthest ancestor to the current directory,
 then does the same for `.opencode/opencode.json(c)` files. This means every
-`.opencode` config overrides every direct config. Global configuration has the
-lowest precedence.
+discovered `.opencode` config overrides every discovered direct config. Global
+filesystem configuration has lower precedence than these discovered documents.
 
 Common configuration fields include `model`, `default_agent`, `permissions`,
 `agents`, `commands`, `plugins`, `providers`, `mcp`, `skills`, `instructions`,

packages/core/src/plugin/supervisor-service.ts

@@ -1,7 +1,6 @@
 export * as PluginSupervisor from "./supervisor-service.js"
 
 import { Context, Effect } from "effect"
-import type { Plugin } from "@opencode-ai/schema/plugin"
 
 /**
  * Dependency-only supervisor seam. Keep this module free of implementation
@@ -10,11 +9,6 @@ import type { Plugin } from "@opencode-ai/schema/plugin"
 export interface Interface {
   /** Wait for the initial plugin generation and startup updates to settle. */
   readonly flush: Effect.Effect<void>
-  /** Initial reconciliation barrier; it never closes again after startup settles. */
-  readonly initialized: Effect.Effect<void>
-  readonly check: (target: string) => Effect.Effect<Plugin.PackageStatus, Plugin.OperationError>
-  readonly update: (target: string) => Effect.Effect<Plugin.Info[], Plugin.OperationError>
-  readonly reload: (target: string) => Effect.Effect<Plugin.Info[], Plugin.OperationError>
 }
 
 export class Service extends Context.Service<Service, Interface>()("@opencode/PluginSupervisor") {}

packages/core/src/plugin/supervisor.ts

@@ -2,10 +2,8 @@ export * as PluginSupervisor from "./supervisor.js"
 export { Service, type Interface } from "./supervisor-service.js"
 
 import { Event } from "@opencode-ai/schema/config"
-import { Cause, Effect, Latch, Layer, Option, Scope, Semaphore, Stream } from "effect"
+import { Cause, Effect, Latch, Layer, Stream } from "effect"
 import path from "path"
-import { randomUUID } from "node:crypto"
-import { pathToFileURL } from "node:url"
 import { ConfigPluginSource } from "../config/plugin/source.js"
 import { makeLocationNode } from "@opencode-ai/util/effect/app-node"
 import { Bus } from "../bus.js"
@@ -17,13 +15,10 @@ import { PluginModule } from "./module.js"
 import { SdkPlugins } from "./sdk.js"
 import { Service } from "./supervisor-service.js"
 
-type Cached = { readonly operation: string; readonly plugin: Plugin.Versioned; readonly error?: string }
-
 const resolve = Effect.fn("PluginSupervisor.resolve")(function* (
   pre: readonly Plugin.Versioned[],
   post: readonly Plugin.Versioned[],
   operations: readonly ConfigPluginSource.Operation[],
-  cache: Map<string, Cached>,
 ) {
   const matches = (selector: string, target: string) =>
     selector === "*" || (selector.endsWith(".*") ? target.startsWith(selector.slice(0, -1)) : selector === target)
@@ -31,7 +26,6 @@ const resolve = Effect.fn("PluginSupervisor.resolve")(function* (
   const enabled = new Set(definitions.map((plugin) => plugin.id))
   const packages = new Map<string, Plugin.Versioned>()
   const failures = new Map<string, Extract<Plugin.Info, { readonly status: "failed" }>>()
-  const previousSources = new Map(cache)
   const plugins = () => [...definitions, ...packages.values()]
 
   for (const operation of operations) {
@@ -54,23 +48,13 @@ const resolve = Effect.fn("PluginSupervisor.resolve")(function* (
       continue
     }
 
-    const cached = previousSources.get(operation.target)
-    const key = JSON.stringify(operation)
-    const plugin =
-      cached?.operation === key
-        ? cached.plugin
-        : yield* PluginModule.load(operation).pipe(
-            Effect.flatMap((plugin) =>
-              cached && plugin.id !== cached.plugin.id
-                ? Effect.fail(new Error(`Plugin ID changed from ${cached.plugin.id} to ${plugin.id}`))
-                : Effect.succeed(plugin),
-            ),
-            Effect.catchCause((cause) =>
-              Effect.logWarning("failed to load plugin", { target: operation.target, cause }).pipe(
-                Effect.as({ error: Plugin.errorMessage(cause) }),
-              ),
-            ),
-          )
+    const plugin = yield* PluginModule.load(operation).pipe(
+      Effect.catchCause((cause) =>
+        Effect.logWarning("failed to load plugin", { target: operation.target, cause }).pipe(
+          Effect.as({ error: Cause.pretty(cause) }),
+        ),
+      ),
+    )
     if ("error" in plugin) {
       failures.set(operation.target, {
         source: pluginSource(operation.target),
@@ -78,24 +62,9 @@ const resolve = Effect.fn("PluginSupervisor.resolve")(function* (
         error: plugin.error,
         tui: false,
       })
-      if (cached) {
-        cache.set(operation.target, { ...cached, operation: key, error: plugin.error })
-        packages.set(operation.target, cached.plugin)
-        enabled.add(cached.plugin.id)
-      }
       continue
     }
-    if (cached?.operation === key && cached.error) {
-      failures.set(operation.target, {
-        source: pluginSource(operation.target),
-        status: "failed",
-        error: cached.error,
-        tui: plugin.tui ?? false,
-      })
-    } else {
-      failures.delete(operation.target)
-      cache.set(operation.target, { operation: key, plugin })
-    }
+    failures.delete(operation.target)
     const previous = packages.get(operation.target)
     if (previous) enabled.delete(previous.id)
     packages.set(operation.target, plugin)
@@ -108,12 +77,10 @@ const resolve = Effect.fn("PluginSupervisor.resolve")(function* (
       ...[...packages.values()].filter((plugin) => enabled.has(plugin.id)),
       ...post.filter((plugin) => enabled.has(plugin.id)),
     ],
-    failures: [...failures.entries()]
-      .filter(([target]) => {
-        const plugin = packages.get(target)
-        return !plugin || enabled.has(plugin.id)
-      })
-      .map(([, failure]) => failure),
+    failures: [...failures.values()],
+    refreshes: [...packages.entries()].flatMap(([target, plugin]) =>
+      !path.isAbsolute(target) && enabled.has(plugin.id) ? [target] : [],
+    ),
   }
 })
 
@@ -126,19 +93,12 @@ export const layer = Layer.effect(
     const sources = yield* ConfigPluginSource.Service
     const bus = yield* Bus.Service
     const npm = yield* Npm.Service
-    const scope = yield* Scope.Scope
     const ready = yield* Latch.make()
-    const initialized = yield* Latch.make()
-    const mutations = yield* Semaphore.make(1)
-    const cache = new Map<string, Cached>()
-    // Internal definitions capture stable Location services; SDK contributions remain dynamic.
-    const internal = yield* PluginInternal.list()
     let observed = 0
 
-    const activate = Effect.fn("PluginSupervisor.activate")(function* (
-      operations: readonly ConfigPluginSource.Operation[],
-      previous: ReadonlyMap<string, Cached> = new Map(cache),
-    ) {
+    const activate = Effect.fn("PluginSupervisor.activate")(function* () {
+      // Resolve OpenCode's internal plugins with their privileged Location services.
+      const internal = yield* PluginInternal.list()
       // Combine internal plugins with host-contributed plugins in boot order.
       // Instance-bound plugins come last: later activation can override earlier
       // container writes, so the instance's explicit choices win over globals.
@@ -152,117 +112,24 @@ export const layer = Layer.effect(
         version: "internal",
         source: { type: "builtin" as const },
       }))
+      const operations = yield* sources.operations()
       // Apply config operations and load enabled package plugins into one ordered generation.
-      const resolved = yield* resolve(pre, post, operations, cache).pipe(Effect.provideService(Npm.Service, npm))
+      const resolved = yield* resolve(pre, post, operations)
       // Replace the active generation in one scoped, batched activation.
-      const activated = yield* registry.activate(resolved.plugins, resolved.failures).pipe(Effect.exit)
-      if (activated._tag === "Failure") {
-        cache.clear()
-        previous.forEach((entry, target) => cache.set(target, entry))
-        return yield* Effect.failCause(activated.cause)
+      yield* registry.activate(resolved.plugins, resolved.failures)
+      if (resolved.refreshes.length) {
+        yield* Effect.forEach(
+          resolved.refreshes,
+          (target) =>
+            npm
+              .add(target, { subpaths: ["server", ""], refresh: true })
+              .pipe(
+                Effect.catchCause((cause) => Effect.logWarning("failed to refresh package plugin", { target, cause })),
+              ),
+          { concurrency: "unbounded", discard: true },
+        ).pipe(Effect.forkDetach)
       }
-      const inventory = yield* registry.list()
-      for (const [target, entry] of cache) {
-        if (!operations.some((operation) => operation.type === "add" && operation.target === target)) {
-          cache.delete(target)
-          continue
-        }
-        const active = inventory.find((item) =>
-          item.source.type === "local"
-            ? item.source.path === target
-            : item.source.type === "package" && item.source.package === target,
-        )
-        if (active?.status !== "active" || !active.error) continue
-        const old = previous.get(target)
-        if (old) cache.set(target, { ...old, operation: entry.operation, error: active.error })
-      }
-      return inventory
     })
-
-    const operation = Effect.fnUntraced(function* (target: string) {
-      const operations = yield* sources.operations().pipe(Effect.provideService(Scope.Scope, scope))
-      const entry = operations.findLast((entry) => entry.type === "add" && entry.target === target)
-      const inventory = yield* registry.list()
-      if (
-        !entry ||
-        entry.type !== "add" ||
-        target === "*" ||
-        target.endsWith(".*") ||
-        target.startsWith("opencode.") ||
-        (!cache.has(target) &&
-          !inventory.some((item) =>
-            item.source.type === "local"
-              ? item.source.path === target
-              : item.source.type === "package" && item.source.package === target,
-          ))
-      )
-        return yield* new Plugin.OperationError({ message: `Not a configured plugin source: ${target}` })
-      return { entry, operations }
-    })
-
-    const mutate = (target: string, action: "update" | "reload") =>
-      initialized.await.pipe(
-        Effect.andThen(
-          mutations.withPermit(
-            Effect.gen(function* () {
-              const selected = yield* operation(target)
-              if (action === "update") {
-                if (path.isAbsolute(target) || !(yield* npm.inspect(target)).mutable)
-                  return yield* new Plugin.OperationError({ message: `Plugin source cannot be updated: ${target}` })
-              }
-              const previous = new Map(cache)
-              const generation = randomUUID()
-              const staged = path.isAbsolute(target)
-                ? {
-                    directory: path.dirname(target),
-                    generation,
-                    entrypoint: `${typeof Bun !== "undefined" ? target.replaceAll("\\", "/") : pathToFileURL(target).href}?reload=${generation}`,
-                  }
-                : yield* action === "update"
-                    ? npm.update(target, { subpaths: ["server", ""] })
-                    : npm.reload(target, {
-                        subpaths: ["server", ""],
-                        revision: cache.get(target)?.plugin.revision,
-                        generation: cache.get(target)?.plugin.generation,
-                      })
-              const loaded = yield* PluginModule.load(selected.entry, staged).pipe(
-                Effect.provideService(Npm.Service, npm),
-                Effect.exit,
-              )
-              if (loaded._tag === "Failure") {
-                const old = cache.get(target)
-                if (!old) return yield* Effect.failCause(loaded.cause)
-                cache.set(target, {
-                  ...old,
-                  operation: JSON.stringify(selected.entry),
-                  error: Plugin.errorMessage(loaded.cause),
-                })
-                return yield* activate(selected.operations, previous)
-              }
-              const old = cache.get(target)
-              if (old && loaded.value.id !== old.plugin.id) {
-                cache.set(target, {
-                  ...old,
-                  operation: JSON.stringify(selected.entry),
-                  error: `Plugin ID changed from ${old.plugin.id} to ${loaded.value.id}`,
-                })
-                return yield* activate(selected.operations, previous)
-              }
-              cache.set(target, { operation: JSON.stringify(selected.entry), plugin: loaded.value })
-              return yield* activate(selected.operations, previous)
-            }),
-          ),
-        ),
-        Effect.catchCause((cause) => {
-          if (Cause.hasInterruptsOnly(cause)) return Effect.interrupt
-          const error = Option.getOrUndefined(Cause.findErrorOption(cause))
-          return Effect.fail(
-            error instanceof Plugin.OperationError
-              ? error
-              : new Plugin.OperationError({ message: `Unable to ${action} plugin source.` }),
-          )
-        }),
-      )
     const updates = Stream.merge(sources.changes(), bus.subscribe([Event.Updated, SdkPlugins.Updated])).pipe(
       // Make accepted work visible to flush before coalescing the burst.
       Stream.mapEffect(() =>
@@ -279,48 +146,13 @@ export const layer = Layer.effect(
       Stream.debounce("100 millis"),
       Stream.runForEach((target) =>
         Effect.gen(function* () {
-          yield* mutations
-            .withPermit(
-              Effect.gen(function* () {
-                return yield* activate(yield* sources.operations().pipe(Effect.provideService(Scope.Scope, scope)))
-              }),
-            )
-            .pipe(Effect.catchCause((cause) => Effect.logError("failed to reload plugins", { cause })))
-          if (observed === target) {
-            yield* initialized.open
-            yield* ready.open
-          }
+          yield* activate().pipe(Effect.catchCause((cause) => Effect.logError("failed to reload plugins", { cause })))
+          if (observed === target) yield* ready.open
         }),
       ),
       Effect.forkScoped({ startImmediately: true }),
     )
-    return Service.of({
-      flush: ready.await,
-      initialized: initialized.await,
-      check: (target) =>
-        initialized.await.pipe(
-          Effect.andThen(
-            mutations.withPermit(
-              Effect.gen(function* () {
-                yield* operation(target)
-                if (path.isAbsolute(target)) return { mutable: false }
-                return yield* npm.check(target)
-              }),
-            ),
-          ),
-          Effect.catchCause((cause) => {
-            if (Cause.hasInterruptsOnly(cause)) return Effect.interrupt
-            const error = Option.getOrUndefined(Cause.findErrorOption(cause))
-            return Effect.fail(
-              error instanceof Plugin.OperationError
-                ? error
-                : new Plugin.OperationError({ message: "Unable to check plugin source." }),
-            )
-          }),
-        ),
-      update: (target) => mutate(target, "update"),
-      reload: (target) => mutate(target, "reload"),
-    })
+    return Service.of({ flush: ready.await })
   }),
 )
 

packages/core/src/project.ts

@@ -137,11 +137,10 @@ const layer = Layer.effect(
           strategy: project.vcs.type === "git" ? "git" : undefined,
         })
       // A missing directory row means this directory's resolution is a new durable
-      // fact (copy.ts registers copy directories directly; those never strand
-      // sessions and never announce). The row insert commits atomically with the
-      // event, so a crash between checks retries on the next resolve instead of
-      // stranding the announcement. The in-flight set keeps concurrent resolves
-      // from publishing the same fact twice.
+      // fact. The row insert commits atomically with the event, so a crash between
+      // checks retries on the next resolve instead of stranding the announcement.
+      // The in-flight set keeps concurrent resolves from publishing the same fact
+      // twice.
       for (const item of directories) {
         const key = item.projectID + "\u0000" + item.directory
         if (announcing.has(key)) continue

packages/core/src/ripgrep.ts

@@ -134,10 +134,9 @@ const layer = Layer.effect(
             }),
             Stream.take(input.limit + 1),
             Stream.runCollect,
-            Effect.map((chunk) => [...chunk]),
           )
           const truncated = rows.length > input.limit
-          if (truncated) return { items: rows.slice(0, input.limit), truncated, partial: false }
+          if (truncated) return rows.slice(0, input.limit)
 
           const code = yield* handle.exitCode
           const stderr = yield* Fiber.join(stderrFiber)
@@ -147,7 +146,7 @@ const layer = Layer.effect(
           if (code !== 0 && code !== 1 && code !== 2) {
             return yield* failure(stderr.trim() || `ripgrep failed with code ${code}`)
           }
-          return { items: code === 1 ? [] : rows, truncated: false, partial: code === 2 }
+          return code === 1 ? [] : rows
         }),
       )
       const abortable = input.signal ? program.pipe(Effect.raceFirst(waitForAbort(input.signal))) : program
@@ -178,7 +177,7 @@ const layer = Layer.effect(
           parse: (line) => Effect.succeed(normalizePath(line)),
         }).pipe(
           Effect.map((result) =>
-            result.items.map((relative) =>
+            result.map((relative) =>
               Entry.make({
                 path: RelativePath.make(relative),
                 type: "file",
@@ -212,10 +211,7 @@ const layer = Layer.effect(
             )
           },
           onItem: input.onEntry,
-        }).pipe(
-          Effect.map((result) => result.items),
-          Effect.catchTag("Ripgrep.InvalidPatternError", (cause) => Effect.fail(failure(cause.message, cause))),
-        ),
+        }).pipe(Effect.catchTag("Ripgrep.InvalidPatternError", (cause) => Effect.fail(failure(cause.message, cause)))),
       grep: (input) =>
         run<RawMatchData>({
           ...input,
@@ -248,7 +244,7 @@ const layer = Layer.effect(
             ),
         }).pipe(
           Effect.map((result) =>
-            result.items.map((match) =>
+            result.map((match) =>
               Match.make({
                 entry: Entry.make({
                   path: RelativePath.make(match.path.text),