fix(core): preserve provider session failures

chore: update nix node_modules hashes
fix(app): clear late session notifications (#33753 )
2026-07-24 03:36:10 +00:00 · 2026-06-24 22:43:18 -04:00 · 2026-06-25 02:28:42 +00:00 · 2026-06-25 02:21:42 +00:00 · 2026-06-25 02:18:06 +00:00 · 2026-06-25 02:16:39 +00:00
437 changed files with 10733 additions and 6760 deletions
@@ -325,6 +325,7 @@ jobs:
        run: bun run build
        working-directory: packages/desktop
        env:
+          NODE_OPTIONS: --max-old-space-size=4096
          OPENCODE_CHANNEL: ${{ (github.ref_name == 'beta' && 'beta') || 'prod' }}
          SENTRY_AUTH_TOKEN: ${{ secrets.SENTRY_AUTH_TOKEN }}
          SENTRY_ORG: ${{ vars.SENTRY_ORG }}
@@ -9,6 +9,7 @@ on:
      - "bun.lock"
      - "packages/storybook/**"
      - "packages/ui/**"
+      - "packages/session-ui/**"
  pull_request:
    branches: [dev]
    paths:
@@ -17,6 +18,7 @@ on:
      - "bun.lock"
      - "packages/storybook/**"
      - "packages/ui/**"
+      - "packages/session-ui/**"
  workflow_dispatch:

 concurrency:
@@ -28,6 +28,7 @@ Examples: `fix(tui): simplify thinking toggle styling`, `docs: update contributi
 - Rely on type inference when possible; avoid explicit type annotations or interfaces unless necessary for exports or clarity
 - Prefer functional array methods (flatMap, filter, map) over for loops; use type guards on filter to maintain type inference downstream
 - In `src/config`, follow the existing self-export pattern at the top of the file (for example `export * as ConfigAgent from "./agent"`) when adding a new config module.
+- In Effect generators, bind services to named variables before calling methods. Do not use nested service yields such as `yield* (yield* Foo.Service).bar()`.

 Reduce total variable count by inlining when a value is only used once.

@@ -57,13 +57,6 @@ The bounded projection of a Core-executed tool result persisted in Session histo
 **Managed Tool Output File**:
 A temporary file created under OpenCode's shared tool-output directory to retain complete output that was too large for Session history.

-**Model Request Options**:
-Provider-semantic model settings selected from the Catalog and active Session variant before the LLM protocol adapter encodes them for a provider request.
-_Avoid_: Request body, wire options
-
-**Generation Controls**:
-Provider-neutral sampling and output controls, partitioned from provider semantics and compatibility wire fields when model metadata enters the Catalog.
-
 **PTY Environment**:
 The host-supplied environment overlay applied by the server when creating a PTY, observed for the request Location and resolved PTY working directory.

@@ -114,8 +107,6 @@ The host-supplied environment overlay applied by the server when creating a PTY,
 - A **Baseline System Context** durably preserves the exact joined text used for the active provider-cache prefix.
 - Completed compaction starts a new **Context Epoch** on the next provider attempt, folding the current complete **System Context** into a fresh baseline and removing earlier **Mid-Conversation System Messages** from active model history.
 - A model/provider switch preserves the current **Context Epoch** and chronological conversation history; the new selection applies to the next provider turn.
- **Model Request Options** remain provider-semantic through Catalog resolution. The Session runner maps them into the LLM package's provider-option namespace; the selected protocol adapter alone owns provider wire encoding.
- **Generation Controls**, protocol-semantic **Model Request Options**, and compatibility request body fields are separate Catalog domains. A shared ingestion adapter partitions legacy and models.dev AI-SDK-shaped options before routing.
 - The **PTY Environment** is a server concern rather than a Core PTY concern. PTY creation merges caller values, then the host overlay, then Core-forced terminal invariants such as `TERM` and `OPENCODE_TERMINAL`.
 - A **PTY Environment** adapter observes plugins in the request Location while passing the resolved PTY working directory to the hook; standalone servers use an empty adapter.
 - A **Mid-Conversation System Message** lowers to the provider's native chronological instruction role when supported and to a wrapped chronological fallback otherwise.
@@ -29,11 +29,12 @@
    },
    "packages/app": {
      "name": "@opencode-ai/app",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@kobalte/core": "catalog:",
        "@opencode-ai/core": "workspace:*",
        "@opencode-ai/sdk": "workspace:*",
+        "@opencode-ai/session-ui": "workspace:*",
        "@opencode-ai/ui": "workspace:*",
        "@pierre/trees": "1.0.0-beta.4",
        "@sentry/solid": "catalog:",
@@ -86,7 +87,7 @@
    },
    "packages/cli": {
      "name": "@opencode-ai/cli",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "bin": {
        "lildax": "./bin/lildax.cjs",
      },
@@ -111,7 +112,7 @@
    },
    "packages/console/app": {
      "name": "@opencode-ai/console-app",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@cloudflare/vite-plugin": "1.15.2",
        "@ibm/plex": "6.4.1",
@@ -147,7 +148,7 @@
    },
    "packages/console/core": {
      "name": "@opencode-ai/console-core",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@aws-sdk/client-sts": "3.782.0",
        "@jsx-email/render": "1.1.1",
@@ -174,7 +175,7 @@
    },
    "packages/console/function": {
      "name": "@opencode-ai/console-function",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@ai-sdk/anthropic": "3.0.82",
        "@ai-sdk/openai": "3.0.48",
@@ -196,7 +197,7 @@
    },
    "packages/console/mail": {
      "name": "@opencode-ai/console-mail",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@jsx-email/all": "2.2.3",
        "@jsx-email/cli": "1.4.3",
@@ -220,7 +221,7 @@
    },
    "packages/console/support": {
      "name": "@opencode-ai/console-support",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@cloudflare/vite-plugin": "1.15.2",
        "@opencode-ai/console-core": "workspace:*",
@@ -240,7 +241,7 @@
    },
    "packages/core": {
      "name": "@opencode-ai/core",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "bin": {
        "opencode": "./bin/opencode",
      },
@@ -333,7 +334,7 @@
    },
    "packages/desktop": {
      "name": "@opencode-ai/desktop",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@zip.js/zip.js": "2.7.62",
        "effect": "catalog:",
@@ -387,7 +388,7 @@
    },
    "packages/effect-drizzle-sqlite": {
      "name": "@opencode-ai/effect-drizzle-sqlite",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "drizzle-orm": "catalog:",
        "effect": "catalog:",
@@ -401,7 +402,7 @@
    },
    "packages/effect-sqlite-node": {
      "name": "@opencode-ai/effect-sqlite-node",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "effect": "catalog:",
      },
@@ -413,10 +414,11 @@
    },
    "packages/enterprise": {
      "name": "@opencode-ai/enterprise",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@hono/standard-validator": "catalog:",
        "@opencode-ai/core": "workspace:*",
+        "@opencode-ai/session-ui": "workspace:*",
        "@opencode-ai/ui": "workspace:*",
        "@pierre/diffs": "catalog:",
        "@solidjs/meta": "catalog:",
@@ -444,7 +446,7 @@
    },
    "packages/function": {
      "name": "@opencode-ai/function",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@octokit/auth-app": "8.0.1",
        "@octokit/rest": "catalog:",
@@ -460,7 +462,7 @@
    },
    "packages/http-recorder": {
      "name": "@opencode-ai/http-recorder",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@effect/platform-node": "4.0.0-beta.83",
        "@effect/platform-node-shared": "4.0.0-beta.83",
@@ -479,7 +481,7 @@
    },
    "packages/llm": {
      "name": "@opencode-ai/llm",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@opencode-ai/schema": "workspace:*",
        "@smithy/eventstream-codec": "4.2.14",
@@ -498,7 +500,7 @@
    },
    "packages/opencode": {
      "name": "opencode",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "bin": {
        "opencode": "./bin/opencode",
      },
@@ -537,6 +539,8 @@
        "@openauthjs/openauth": "catalog:",
        "@opencode-ai/llm": "workspace:*",
        "@opencode-ai/plugin": "workspace:*",
+        "@opencode-ai/protocol": "workspace:*",
+        "@opencode-ai/schema": "workspace:*",
        "@opencode-ai/script": "workspace:*",
        "@opencode-ai/sdk": "workspace:*",
        "@opencode-ai/server": "workspace:*",
@@ -626,7 +630,7 @@
    },
    "packages/plugin": {
      "name": "@opencode-ai/plugin",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@ai-sdk/provider": "3.0.8",
        "@opencode-ai/sdk": "workspace:*",
@@ -653,6 +657,18 @@
        "@opentui/solid",
      ],
    },
+    "packages/protocol": {
+      "name": "@opencode-ai/protocol",
+      "dependencies": {
+        "@opencode-ai/schema": "workspace:*",
+        "effect": "catalog:",
+      },
+      "devDependencies": {
+        "@tsconfig/bun": "catalog:",
+        "@types/bun": "catalog:",
+        "@typescript/native-preview": "catalog:",
+      },
+    },
    "packages/schema": {
      "name": "@opencode-ai/schema",
      "dependencies": {
@@ -676,7 +692,7 @@
    },
    "packages/sdk/js": {
      "name": "@opencode-ai/sdk",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "cross-spawn": "catalog:",
      },
@@ -691,9 +707,10 @@
    },
    "packages/server": {
      "name": "@opencode-ai/server",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@opencode-ai/core": "workspace:*",
+        "@opencode-ai/protocol": "workspace:*",
        "drizzle-orm": "catalog:",
        "effect": "catalog:",
      },
@@ -703,9 +720,53 @@
        "@typescript/native-preview": "catalog:",
      },
    },
+    "packages/session-ui": {
+      "name": "@opencode-ai/session-ui",
+      "version": "1.17.10",
+      "dependencies": {
+        "@kobalte/core": "catalog:",
+        "@opencode-ai/core": "workspace:*",
+        "@opencode-ai/sdk": "workspace:*",
+        "@opencode-ai/ui": "workspace:*",
+        "@pierre/diffs": "catalog:",
+        "@shikijs/stream": "catalog:",
+        "@shikijs/transformers": "3.9.2",
+        "@solid-primitives/bounds": "0.1.3",
+        "@solid-primitives/event-listener": "2.4.5",
+        "@solid-primitives/media": "2.3.3",
+        "@solid-primitives/resize-observer": "2.1.3",
+        "@solidjs/meta": "catalog:",
+        "@solidjs/router": "catalog:",
+        "diff": "catalog:",
+        "dompurify": "3.3.1",
+        "fuzzysort": "catalog:",
+        "katex": "0.16.27",
+        "luxon": "catalog:",
+        "marked": "catalog:",
+        "marked-katex-extension": "5.1.6",
+        "marked-shiki": "catalog:",
+        "morphdom": "2.7.8",
+        "motion": "12.34.5",
+        "remeda": "catalog:",
+        "remend": "catalog:",
+        "shiki": "catalog:",
+        "solid-js": "catalog:",
+        "solid-list": "catalog:",
+        "strip-ansi": "7.1.2",
+      },
+      "devDependencies": {
+        "@tsconfig/node22": "catalog:",
+        "@types/bun": "catalog:",
+        "@types/katex": "0.16.7",
+        "@types/luxon": "catalog:",
+        "@typescript/native-preview": "catalog:",
+        "typescript": "catalog:",
+        "vite": "catalog:",
+      },
+    },
    "packages/slack": {
      "name": "@opencode-ai/slack",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@opencode-ai/sdk": "workspace:*",
        "@slack/bolt": "^3.17.1",
@@ -718,7 +779,7 @@
    },
    "packages/stats/app": {
      "name": "@opencode-ai/stats-app",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@ibm/plex": "6.4.1",
        "@opencode-ai/stats-core": "workspace:*",
@@ -751,7 +812,7 @@
    },
    "packages/stats/core": {
      "name": "@opencode-ai/stats-core",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@aws-sdk/client-athena": "3.933.0",
        "@planetscale/database": "1.19.0",
@@ -770,7 +831,7 @@
    },
    "packages/stats/server": {
      "name": "@opencode-ai/stats-server",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@aws-sdk/client-firehose": "3.933.0",
        "@effect/platform-node": "catalog:",
@@ -789,6 +850,7 @@
    "packages/storybook": {
      "name": "@opencode-ai/storybook",
      "devDependencies": {
+        "@opencode-ai/session-ui": "workspace:*",
        "@opencode-ai/ui": "workspace:*",
        "@solidjs/meta": "catalog:",
        "@storybook/addon-a11y": "^10.2.13",
@@ -810,7 +872,7 @@
    },
    "packages/tui": {
      "name": "@opencode-ai/tui",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@opencode-ai/core": "workspace:*",
        "@opencode-ai/plugin": "workspace:*",
@@ -837,11 +899,9 @@
    },
    "packages/ui": {
      "name": "@opencode-ai/ui",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@kobalte/core": "catalog:",
-        "@opencode-ai/core": "workspace:*",
-        "@opencode-ai/sdk": "workspace:*",
        "@pierre/diffs": "catalog:",
        "@shikijs/stream": "catalog:",
        "@shikijs/transformers": "3.9.2",
@@ -886,7 +946,7 @@
    },
    "packages/web": {
      "name": "@opencode-ai/web",
-      "version": "1.17.9",
+      "version": "1.17.10",
      "dependencies": {
        "@astrojs/cloudflare": "12.6.3",
        "@astrojs/markdown-remark": "6.3.1",
@@ -1817,6 +1877,8 @@

    "@opencode-ai/plugin": ["@opencode-ai/plugin@workspace:packages/plugin"],

+    "@opencode-ai/protocol": ["@opencode-ai/protocol@workspace:packages/protocol"],
+
    "@opencode-ai/schema": ["@opencode-ai/schema@workspace:packages/schema"],

    "@opencode-ai/script": ["@opencode-ai/script@workspace:packages/script"],
@@ -1825,6 +1887,8 @@

    "@opencode-ai/server": ["@opencode-ai/server@workspace:packages/server"],

+    "@opencode-ai/session-ui": ["@opencode-ai/session-ui@workspace:packages/session-ui"],
+
    "@opencode-ai/slack": ["@opencode-ai/slack@workspace:packages/slack"],

    "@opencode-ai/stats-app": ["@opencode-ai/stats-app@workspace:packages/stats/app"],
@@ -5843,6 +5907,8 @@

    "@opencode-ai/llm/@smithy/util-utf8": ["@smithy/util-utf8@4.2.2", "", { "dependencies": { "@smithy/util-buffer-from": "^4.2.2", "tslib": "^2.6.2" } }, "sha512-75MeYpjdWRe8M5E3AW0O4Cx3UadweS+cwdXjwYGBW5h/gxxnbeZ877sLPX/ZJA9GVTlL/qG0dXP29JWFCD1Ayw=="],

+    "@opencode-ai/session-ui/@solid-primitives/resize-observer": ["@solid-primitives/resize-observer@2.1.3", "", { "dependencies": { "@solid-primitives/event-listener": "^2.4.3", "@solid-primitives/rootless": "^1.5.2", "@solid-primitives/static-store": "^0.1.2", "@solid-primitives/utils": "^6.3.2" }, "peerDependencies": { "solid-js": "^1.6.12" } }, "sha512-zBLje5E06TgOg93S7rGPldmhDnouNGhvfZVKOp+oG2XU8snA+GoCSSCz1M+jpNAg5Ek2EakU5UVQqL152WmdXQ=="],
+
    "@opencode-ai/ui/@solid-primitives/resize-observer": ["@solid-primitives/resize-observer@2.1.3", "", { "dependencies": { "@solid-primitives/event-listener": "^2.4.3", "@solid-primitives/rootless": "^1.5.2", "@solid-primitives/static-store": "^0.1.2", "@solid-primitives/utils": "^6.3.2" }, "peerDependencies": { "solid-js": "^1.6.12" } }, "sha512-zBLje5E06TgOg93S7rGPldmhDnouNGhvfZVKOp+oG2XU8snA+GoCSSCz1M+jpNAg5Ek2EakU5UVQqL152WmdXQ=="],

    "@opencode-ai/web/@shikijs/transformers": ["@shikijs/transformers@3.20.0", "", { "dependencies": { "@shikijs/core": "3.20.0", "@shikijs/types": "3.20.0" } }, "sha512-PrHHMRr3Q5W1qB/42kJW6laqFyWdhrPF2hNR9qjOm1xcSiAO3hAHo7HaVyHE6pMyevmy3i51O8kuGGXC78uK3g=="],
@@ -42,11 +42,12 @@ const inferenceEventTable = new aws.s3tables.Table(
            { name: "request", type: "string", required: false },
            { name: "client", type: "string", required: false },
            { name: "user_agent", type: "string", required: false },
+            { name: "model", type: "string", required: false },
+            { name: "model_tier", type: "string", required: false },
            { name: "model_variant", type: "string", required: false },
            { name: "source", type: "string", required: false },
            { name: "provider", type: "string", required: false },
            { name: "provider_model", type: "string", required: false },
-            { name: "model", type: "string", required: false },
            { name: "llm_error_code", type: "int", required: false },
            { name: "llm_error_message", type: "string", required: false },
            { name: "error_response", type: "string", required: false },
@@ -1,8 +1,8 @@
 {
  "nodeModules": {
-    "x86_64-linux": "sha256-JJnJVqP2+NiiRVoTKXjGD09lPRyfz8YMfx0m3jBaUzU=",
-    "aarch64-linux": "sha256-tY3/IA+iZbOQQGxrcHMvQ1xqByskZyVI+4LZkU0wVjs=",
-    "aarch64-darwin": "sha256-9qMRrQKKOgQuOcAgAq8oZacVFD7G4nbAfZawmCRuJdY=",
-    "x86_64-darwin": "sha256-dR2VGxDLoAPEmk8SsEF4dhlPBcb9ubztAuVfwxuAD4M="
+    "x86_64-linux": "sha256-Q0CW2wMhVtRM3uILV1kvKAzpQJqBxTp4MLsGlsSoT1s=",
+    "aarch64-linux": "sha256-UHpoDqqV+umG47LENB7DLxbCqvwjTCDjHWIFiv6Vmk8=",
+    "aarch64-darwin": "sha256-rqlFositEiB1wzx6Jcp5yVQlp8LLYBW+79KXmRpXh2Q=",
+    "x86_64-darwin": "sha256-BKr4YQio3eP0VLZ0z+oyaM93H8dAbSwmlzxT8PH6W8M="
  }
 }
@@ -119,7 +119,6 @@ export async function setupTimelineBenchmark(page: Page, options: { historyTurns
          editToolPartsExpanded: true,
          shellToolPartsExpanded: true,
          showReasoningSummaries: true,
-          showSessionProgressBar: true,
        },
      }),
    )
@@ -13,7 +13,6 @@ export async function installTimelineSettings(page: Page) {
          editToolPartsExpanded: true,
          shellToolPartsExpanded: true,
          showReasoningSummaries: true,
-          showSessionProgressBar: true,
        },
      }),
    )
@@ -261,7 +261,6 @@ async function configurePage(page: Page) {
          editToolPartsExpanded: true,
          shellToolPartsExpanded: true,
          showReasoningSummaries: true,
-          showSessionProgressBar: true,
        },
      }),
    )
@@ -47,7 +47,6 @@ async function configurePage(page: Page) {
          editToolPartsExpanded: true,
          shellToolPartsExpanded: true,
          showReasoningSummaries: true,
-          showSessionProgressBar: true,
        },
      }),
    )
@@ -362,7 +362,6 @@ async function configureSmokePage(page: Page, directory: string) {
          editToolPartsExpanded: true,
          shellToolPartsExpanded: true,
          showReasoningSummaries: true,
-          showSessionProgressBar: true,
        },
      }),
    )
@@ -1,6 +1,6 @@
 {
  "name": "@opencode-ai/app",
-  "version": "1.17.9",
+  "version": "1.17.10",
  "description": "",
  "type": "module",
  "exports": {
@@ -47,6 +47,7 @@
    "@kobalte/core": "catalog:",
    "@opencode-ai/core": "workspace:*",
    "@opencode-ai/sdk": "workspace:*",
+    "@opencode-ai/session-ui": "workspace:*",
    "@opencode-ai/ui": "workspace:*",
    "@pierre/trees": "1.0.0-beta.4",
    "@sentry/solid": "catalog:",
@@ -4,7 +4,7 @@ import { I18nProvider } from "@opencode-ai/ui/context"
 import { DialogProvider } from "@opencode-ai/ui/context/dialog"
 import { FileComponentProvider } from "@opencode-ai/ui/context/file"
 import { MarkedProvider } from "@opencode-ai/ui/context/marked"
-import { File } from "@opencode-ai/ui/file"
+import { File } from "@opencode-ai/session-ui/file"
 import { Font } from "@opencode-ai/ui/font"
 import { Splash } from "@opencode-ai/ui/logo"
 import { ThemeProvider } from "@opencode-ai/ui/theme/context"
@@ -31,8 +31,8 @@ import { CommandProvider } from "@/context/command"
 import { CommentsProvider } from "@/context/comments"
 import { FileProvider } from "@/context/file"
 import { ServerSDKProvider, useServerSDK } from "@/context/server-sdk"
-import { ServerSyncProvider } from "@/context/server-sync"
-import { GlobalProvider, useGlobal } from "@/context/global"
+import { ServerSyncProvider, useServerSync } from "@/context/server-sync"
+import { GlobalProvider } from "@/context/global"
 import { HighlightsProvider } from "@/context/highlights"
 import { LanguageProvider, type Locale, useLanguage } from "@/context/language"
 import { LayoutProvider } from "@/context/layout"
@@ -51,7 +51,7 @@ import LegacyLayout from "@/pages/layout"
 import NewLayout from "@/pages/layout-new"
 import { ErrorPage } from "./pages/error"
 import { useCheckServerHealth } from "./utils/server-health"
-import { legacySessionHref, requireServerKey, rootSession, sessionHref } from "./utils/session-route"
+import { legacySessionHref, requireServerKey, sessionHref } from "./utils/session-route"

 import Session from "@/pages/session"
 import { NewHome, LegacyHome } from "@/pages/home"
@@ -109,37 +109,26 @@ function ResolvedTargetSessionRoute() {
  const params = useParams<{ serverKey: string; id: string }>()
  const settings = useSettings()
  const tabs = useTabs()
-  const global = useGlobal()
-  const serverSDK = useServerSDK()
+  const sync = useServerSync()
  const serverKey = createMemo(() => requireServerKey(params.serverKey))
-  const placement = createMemo(() => global.sessionPlacement.get(serverKey(), params.id))
+  const cached = createMemo(() => sync().session.lineage.peek(params.id))
  const [resolved] = createResource(
    () => {
-      if (placement()) return
-      return { id: params.id, sdk: serverSDK() }
-    },
-    async ({ id, sdk }) => {
-      const session = (await sdk.client.session.get({ sessionID: id })).data!
-      const root = await rootSession(session, (sessionID) =>
-        sdk.client.session.get({ sessionID }).then((result) => result.data!),
-      )
-      return global.sessionPlacement.set({
-        server: serverKey(),
-        leafID: session.id,
-        rootID: root.id,
-        directory: session.directory,
-      })
+      if (cached()) return
+      return { id: params.id, sync: sync() }
    },
+    ({ id, sync }) => sync.session.lineage.resolve(id),
  )
-  const directory = createMemo(() => placement()?.directory ?? resolved()?.directory)
+  const current = createMemo(() => cached() ?? resolved())
+  const directory = createMemo(() => current()?.session.directory)
  const targetDirectory = () => directory()!

  createEffect(() => {
-    const current = placement() ?? resolved()
-    if (!current) return
+    const session = current()
+    if (!session) return
    tabs.addSessionTab({
      server: serverKey(),
-      sessionId: current.rootID,
+      sessionId: session.root.id,
    })
  })

@@ -185,6 +185,10 @@ beforeAll(async () => {

  mock.module("@/context/server-sync", () => ({
    useServerSync: () => () => ({
+      session: {
+        remember: () => undefined,
+        set: () => undefined,
+      },
      child: (directory: string) => {
        syncedDirectories.push(directory)
        storedSessions[directory] ??= []
@@ -56,16 +56,14 @@ const draftImages = (prompt: Prompt) => prompt.filter((part): part is ImageAttac
 export async function sendFollowupDraft(input: FollowupSendInput) {
  const text = draftText(input.draft.prompt)
  const images = draftImages(input.draft.prompt)
-  const [, setStore] = input.serverSync.child(input.draft.sessionDirectory)
-
  const setBusy = () => {
    if (!input.optimisticBusy) return
-    setStore("session_status", input.draft.sessionID, { type: "busy" })
+    input.serverSync.session.set("session_status", input.draft.sessionID, { type: "busy" })
  }

  const setIdle = () => {
    if (!input.optimisticBusy) return
-    setStore("session_status", input.draft.sessionID, { type: "idle" })
+    input.serverSync.session.set("session_status", input.draft.sessionID, { type: "idle" })
  }

  const wait = async () => {
@@ -234,9 +232,7 @@ export function createPromptSubmit(input: PromptSubmitInput) {
    const sessionID = params.id
    if (!sessionID) return Promise.resolve()

-    serverSync().todo.set(sessionID, [])
-    const [, setStore] = serverSync().child(sdk().directory)
-    setStore("todo", sessionID, [])
+    serverSync().session.set("todo", sessionID, [])

    input.onAbort?.()

@@ -282,6 +278,7 @@ export function createPromptSubmit(input: PromptSubmitInput) {
  }

  const seed = (dir: string, info: Session) => {
+    serverSync().session.remember(info)
    const [, setStore] = serverSync().child(dir)
    setStore("session", (list: Session[]) => {
      const result = Binary.search(list, info.id, (item) => item.id)
@@ -7,8 +7,8 @@ import { same } from "@/utils/same"
 import { Icon } from "@opencode-ai/ui/icon"
 import { Accordion } from "@opencode-ai/ui/accordion"
 import { StickyAccordionHeader } from "@opencode-ai/ui/sticky-accordion-header"
-import { File } from "@opencode-ai/ui/file"
-import { Markdown } from "@opencode-ai/ui/markdown"
+import { File } from "@opencode-ai/session-ui/file"
+import { Markdown } from "@opencode-ai/session-ui/markdown"
 import { ScrollView } from "@opencode-ai/ui/scroll-view"
 import type { Message, Part, UserMessage } from "@opencode-ai/sdk/v2/client"
 import { useLanguage } from "@/context/language"
@@ -335,18 +335,6 @@ export const SettingsGeneral: Component = () => {
          </div>
        </SettingsRow>

-        <SettingsRow
-          title={language.t("settings.general.row.showSessionProgressBar.title")}
-          description={language.t("settings.general.row.showSessionProgressBar.description")}
-        >
-          <div data-action="settings-show-session-progress-bar">
-            <Switch
-              checked={settings.general.showSessionProgressBar()}
-              onChange={(checked) => settings.general.setShowSessionProgressBar(checked)}
-            />
-          </div>
-        </SettingsRow>
-
        <SettingsRow
          title={language.t("settings.general.row.newLayoutDesigns.title")}
          description={language.t("settings.general.row.newLayoutDesigns.description")}
@@ -318,18 +318,6 @@ export const SettingsGeneralV2: Component = () => {
          </div>
        </SettingsRowV2>

-        <SettingsRowV2
-          title={language.t("settings.general.row.showSessionProgressBar.title")}
-          description={language.t("settings.general.row.showSessionProgressBar.description")}
-        >
-          <div data-action="settings-show-session-progress-bar">
-            <Switch
-              checked={settings.general.showSessionProgressBar()}
-              onChange={(checked) => settings.general.setShowSessionProgressBar(checked)}
-            />
-          </div>
-        </SettingsRowV2>
-
        <SettingsRowV2
          title={language.t("settings.general.row.newLayoutDesigns.title")}
          description={language.t("settings.general.row.newLayoutDesigns.description")}
@@ -512,38 +512,15 @@ export function Titlebar(props: { update?: TitlebarUpdate }) {
                            return conn ? global.ensureServerCtx(conn) : undefined
                          })
                          const sdk = createMemo(() => serverCtx()?.sdk ?? null)
-                          const cachedSession = createMemo(() => {
-                            const placement = global.sessionPlacement.get(tab.server, tab.sessionId)
-                            const ctx = serverCtx()
-                            if (!placement || !ctx) return
-                            return ctx.sync
-                              .child(placement.directory, { bootstrap: false })[0]
-                              .session.find((session) => session.id === tab.sessionId)
-                          })
+                          const cachedSession = createMemo(() => serverCtx()?.sync.session.peek(tab.sessionId))

                          const [loadedSession] = createResource(
                            () => {
-                              if (cachedSession()) return null
                              const id = tab.sessionId
                              const ctx = serverCtx()
                              return ctx ? { id, ctx } : null
                            },
-                            ({ id, ctx }) =>
-                              ctx.sdk.client.session
-                                .get({ sessionID: id })
-                                .then((x) => {
-                                  const session = x.data
-                                  if (!session) return
-                                  if (!session.parentID)
-                                    global.sessionPlacement.set({
-                                      server: tab.server,
-                                      leafID: session.id,
-                                      rootID: session.id,
-                                      directory: session.directory,
-                                    })
-                                  return session
-                                })
-                                .catch(() => undefined),
+                            ({ id, ctx }) => ctx.sync.session.resolve(id).catch(() => undefined),
                          )
                          const session = createMemo(() => cachedSession() ?? loadedSession())
                          let prefetched = false
@@ -1,175 +1,23 @@
-import { batch, createMemo } from "solid-js"
-import { createStore, produce, reconcile } from "solid-js/store"
 import { Binary } from "@opencode-ai/core/util/binary"
-import { retry } from "@opencode-ai/core/util/retry"
-import {
-  clearSessionPrefetch,
-  getSessionPrefetch,
-  getSessionPrefetchPromise,
-  setSessionPrefetch,
-} from "./global-sync/session-prefetch"
 import type { Message, Part } from "@opencode-ai/sdk/v2/client"
-import { SESSION_CACHE_LIMIT, dropSessionCaches, pickSessionCacheEvictions } from "./global-sync/session-cache"
-import { diffs as list, message as clean } from "@/utils/diffs"
-import { type createServerSdkContext } from "./server-sdk"
-import { type createServerSyncContextInner } from "./server-sync"
-
-const SKIP_PARTS = new Set(["patch", "step-start", "step-finish"])
-
-function sortParts(parts: Part[]) {
-  return parts.filter((part) => !!part?.id).sort((a, b) => cmp(a.id, b.id))
-}
-
-function runInflight(map: Map<string, Promise<void>>, key: string, task: () => Promise<void>) {
-  const pending = map.get(key)
-  if (pending) return pending
-  const promise = task().finally(() => {
-    map.delete(key)
-  })
-  map.set(key, promise)
-  return promise
-}
-
-const keyFor = (directory: string, id: string) => `${directory}\n${id}`
+import { createMemo } from "solid-js"
+import { produce, reconcile, type SetStoreFunction } from "solid-js/store"
+import type { createServerSdkContext } from "./server-sdk"
+import type { createServerSyncContextInner } from "./server-sync"
+import type { State } from "./global-sync/types"

 const cmp = (a: string, b: string) => (a < b ? -1 : a > b ? 1 : 0)
-
-const isNotFound = (error: unknown) =>
-  error instanceof Error &&
-  typeof error.cause === "object" &&
-  error.cause !== null &&
-  (error.cause as { status?: unknown }).status === 404
-
-function merge<T extends { id: string }>(a: readonly T[], b: readonly T[]) {
-  const map = new Map(a.map((item) => [item.id, item] as const))
-  for (const item of b) map.set(item.id, item)
-  return [...map.values()].sort((x, y) => cmp(x.id, y.id))
-}
-
-type OptimisticStore = {
-  message: Record<string, Message[] | undefined>
-  part: Record<string, Part[] | undefined>
-}
-
-type OptimisticAddInput = {
-  sessionID: string
-  message: Message
-  parts: Part[]
-}
-
-type OptimisticRemoveInput = {
-  sessionID: string
-  messageID: string
-}
-
-type OptimisticItem = {
-  message: Message
-  parts: Part[]
-}
-
-type MessagePage = {
-  session: Message[]
-  part: { id: string; part: Part[] }[]
-  cursor?: string
-  complete: boolean
-}
-
-const hasParts = (parts: Part[] | undefined, want: Part[]) => {
-  if (!parts) return want.length === 0
-  return want.every((part) => Binary.search(parts, part.id, (item) => item.id).found)
-}
-
-const mergeParts = (parts: Part[] | undefined, want: Part[]) => {
-  if (!parts) return sortParts(want)
-  const next = [...parts]
-  let changed = false
-  for (const part of want) {
-    const result = Binary.search(next, part.id, (item) => item.id)
-    if (result.found) continue
-    next.splice(result.index, 0, part)
-    changed = true
-  }
-  if (!changed) return parts
-  return next
-}
-
-export function mergeOptimisticPage(page: MessagePage, items: OptimisticItem[]) {
-  if (items.length === 0) return { ...page, confirmed: [] as string[] }
-
-  const session = [...page.session]
-  const part = new Map(page.part.map((item) => [item.id, sortParts(item.part)]))
-  const confirmed: string[] = []
-
-  for (const item of items) {
-    const result = Binary.search(session, item.message.id, (message) => message.id)
-    const found = result.found
-    if (!found) session.splice(result.index, 0, item.message)
-
-    const current = part.get(item.message.id)
-    if (found && hasParts(current, item.parts)) {
-      confirmed.push(item.message.id)
-      continue
-    }
-
-    part.set(item.message.id, mergeParts(current, item.parts))
-  }
-
-  return {
-    cursor: page.cursor,
-    complete: page.complete,
-    session,
-    part: [...part.entries()].sort((a, b) => cmp(a[0], b[0])).map(([id, part]) => ({ id, part })),
-    confirmed,
-  }
-}
-
-export function applyOptimisticAdd(draft: OptimisticStore, input: OptimisticAddInput) {
-  const messages = draft.message[input.sessionID]
-  if (messages) {
-    const result = Binary.search(messages, input.message.id, (m) => m.id)
-    messages.splice(result.index, 0, input.message)
-  } else {
-    draft.message[input.sessionID] = [input.message]
-  }
-  draft.part[input.message.id] = sortParts(input.parts)
-}
-
-export function applyOptimisticRemove(draft: OptimisticStore, input: OptimisticRemoveInput) {
-  const messages = draft.message[input.sessionID]
-  if (messages) {
-    const result = Binary.search(messages, input.messageID, (m) => m.id)
-    if (result.found) messages.splice(result.index, 1)
-  }
-  delete draft.part[input.messageID]
-}
-
-function setOptimisticAdd(setStore: (...args: unknown[]) => void, input: OptimisticAddInput) {
-  setStore("message", input.sessionID, (messages: Message[] | undefined) => {
-    if (!messages) return [input.message]
-    const result = Binary.search(messages, input.message.id, (m) => m.id)
-    const next = [...messages]
-    next.splice(result.index, 0, input.message)
-    return next
-  })
-  setStore("part", input.message.id, sortParts(input.parts))
-}
-
-function setOptimisticRemove(setStore: (...args: unknown[]) => void, input: OptimisticRemoveInput) {
-  setStore("message", input.sessionID, (messages: Message[] | undefined) => {
-    if (!messages) return messages
-    const result = Binary.search(messages, input.messageID, (m) => m.id)
-    if (!result.found) return messages
-    const next = [...messages]
-    next.splice(result.index, 1)
-    return next
-  })
-  setStore("part", (part: Record<string, Part[] | undefined>) => {
-    if (!(input.messageID in part)) return part
-    const next = { ...part }
-    delete next[input.messageID]
-    return next
-  })
-}
+const sessionFields = new Set([
+  "session_status",
+  "session_working",
+  "session_diff",
+  "todo",
+  "permission",
+  "question",
+  "message",
+  "part",
+  "part_text_accum_delta",
+])

 export const createDirSyncContext = (
  directory: string,
@@ -177,210 +25,42 @@ export const createDirSyncContext = (
  serverSDK: ReturnType<typeof createServerSdkContext>,
 ) => {
  const client = serverSDK.createClient({ directory, throwOnError: true })
-
-  type Child = ReturnType<(typeof serverSync)["child"]>
-  type Setter = Child[1]
-
  const current = createMemo(() => serverSync.child(directory, { mcp: true }))
-  const target = (directory?: string) => {
-    if (!directory || directory === directory) return current()
-    return serverSync.child(directory)
-  }
  const absolute = (path: string) => (current()[0].path.directory + "/" + path).replace("//", "/")
-  const initialMessagePageSize = 2
-  const historyMessagePageSize = 200
-  const inflight = new Map<string, Promise<void>>()
-  const inflightDiff = new Map<string, Promise<void>>()
-  const inflightTodo = new Map<string, Promise<void>>()
-  const optimistic = new Map<string, Map<string, OptimisticItem>>()
-  const maxDirs = 30
-  const seen = new Map<string, Set<string>>()
-  const [meta, setMeta] = createStore({
-    limit: {} as Record<string, number>,
-    cursor: {} as Record<string, string | undefined>,
-    complete: {} as Record<string, boolean>,
-    loading: {} as Record<string, boolean>,
+  const data = new Proxy({} as State, {
+    get(_, property: keyof State) {
+      if (property === "session_working") return serverSync.session.data.session_working.bind(serverSync.session.data)
+      if (sessionFields.has(property)) return serverSync.session.data[property as keyof typeof serverSync.session.data]
+      return current()[0][property]
+    },
  })
+  const set = ((...input: unknown[]) => {
+    if (typeof input[0] === "string" && sessionFields.has(input[0])) {
+      return (serverSync.session.set as (...args: unknown[]) => unknown)(...input)
+    }
+    const result = (current()[1] as (...args: unknown[]) => unknown)(...input)
+    if (input[0] === "session") current()[0].session.forEach(serverSync.session.remember)
+    return result
+  }) as SetStoreFunction<State>

-  const getSession = (sessionID: string) => {
-    const store = current()[0]
-    const match = Binary.search(store.session, sessionID, (s) => s.id)
-    if (match.found) return store.session[match.index]
-    return undefined
-  }
-
-  const setOptimistic = (directory: string, sessionID: string, item: OptimisticItem) => {
-    const key = keyFor(directory, sessionID)
-    const list = optimistic.get(key)
-    if (list) {
-      list.set(item.message.id, { message: item.message, parts: sortParts(item.parts) })
+  const index = (sessionID: string) => {
+    const session = serverSync.session.get(sessionID)
+    if (!session || session.directory !== directory) return
+    const [store, setStore] = current()
+    const result = Binary.search(store.session, session.id, (item) => item.id)
+    if (result.found) {
+      setStore("session", result.index, reconcile(session))
      return
    }
-    optimistic.set(key, new Map([[item.message.id, { message: item.message, parts: sortParts(item.parts) }]]))
-  }
-
-  const clearOptimistic = (directory: string, sessionID: string, messageID?: string) => {
-    const key = keyFor(directory, sessionID)
-    if (!messageID) {
-      optimistic.delete(key)
-      return
-    }
-
-    const list = optimistic.get(key)
-    if (!list) return
-    list.delete(messageID)
-    if (list.size === 0) optimistic.delete(key)
-  }
-
-  const getOptimistic = (directory: string, sessionID: string) => [
-    ...(optimistic.get(keyFor(directory, sessionID))?.values() ?? []),
-  ]
-
-  const seenFor = (directory: string) => {
-    const existing = seen.get(directory)
-    if (existing) {
-      seen.delete(directory)
-      seen.set(directory, existing)
-      return existing
-    }
-    const created = new Set<string>()
-    seen.set(directory, created)
-    while (seen.size > maxDirs) {
-      const first = seen.keys().next().value
-      if (!first) break
-      const stale = [...(seen.get(first) ?? [])]
-      seen.delete(first)
-      const [, setStore] = serverSync.child(first, { bootstrap: false })
-      evict(first, setStore, stale)
-    }
-    return created
-  }
-
-  const clearMeta = (directory: string, sessionIDs: string[]) => {
-    if (sessionIDs.length === 0) return
-    for (const sessionID of sessionIDs) {
-      clearOptimistic(directory, sessionID)
-    }
-    setMeta(
-      produce((draft) => {
-        for (const sessionID of sessionIDs) {
-          const key = keyFor(directory, sessionID)
-          delete draft.limit[key]
-          delete draft.cursor[key]
-          delete draft.complete[key]
-          delete draft.loading[key]
-        }
-      }),
-    )
-  }
-
-  const evict = (directory: string, setStore: Setter, sessionIDs: string[]) => {
-    if (sessionIDs.length === 0) return
-    clearSessionPrefetch(serverSDK.scope, directory, sessionIDs)
-    for (const sessionID of sessionIDs) {
-      serverSync.todo.set(sessionID, undefined)
-    }
    setStore(
-      produce((draft) => {
-        dropSessionCaches(draft, sessionIDs)
-      }),
+      "session",
+      produce((draft) => void draft.splice(result.index, 0, session)),
    )
-    clearMeta(directory, sessionIDs)
-  }
-
-  const touch = (directory: string, setStore: Setter, sessionID: string) => {
-    const stale = pickSessionCacheEvictions({
-      seen: seenFor(directory),
-      keep: sessionID,
-      limit: SESSION_CACHE_LIMIT,
-    })
-    evict(directory, setStore, stale)
-  }
-
-  const fetchMessages = async (input: { client: typeof client; sessionID: string; limit: number; before?: string }) => {
-    const messages = await retry(() =>
-      input.client.session.messages({ sessionID: input.sessionID, limit: input.limit, before: input.before }),
-    )
-    const items = (messages.data ?? []).filter((x) => !!x?.info?.id)
-    const session = items.map((x) => clean(x.info)).sort((a, b) => cmp(a.id, b.id))
-    const part = items.map((message) => ({ id: message.info.id, part: sortParts(message.parts) }))
-    const cursor = messages.response.headers.get("x-next-cursor") ?? undefined
-    return {
-      session,
-      part,
-      cursor,
-      complete: !cursor,
-    }
-  }
-
-  const tracked = (directory: string, sessionID: string) => seen.get(directory)?.has(sessionID) ?? false
-
-  const loadMessages = async (input: {
-    directory: string
-    client: typeof client
-    setStore: Setter
-    sessionID: string
-    limit: number
-    before?: string
-    mode?: "replace" | "prepend"
-  }) => {
-    const key = keyFor(input.directory, input.sessionID)
-    if (meta.loading[key]) return
-
-    setMeta("loading", key, true)
-    await fetchMessages(input)
-      .then((page) => {
-        if (!tracked(input.directory, input.sessionID)) return
-        const next = mergeOptimisticPage(page, getOptimistic(input.directory, input.sessionID))
-        for (const messageID of next.confirmed) {
-          clearOptimistic(input.directory, input.sessionID, messageID)
-        }
-        const [store] = serverSync.child(input.directory, { bootstrap: false })
-        const cached = input.mode === "prepend" ? (store.message[input.sessionID] ?? []) : []
-        const message = input.mode === "prepend" ? merge(cached, next.session) : next.session
-        batch(() => {
-          input.setStore("message", input.sessionID, reconcile(message, { key: "id" }))
-          for (const p of next.part) {
-            const filtered = p.part.filter((x) => !SKIP_PARTS.has(x.type))
-            if (filtered.length) input.setStore("part", p.id, filtered)
-          }
-          setMeta("limit", key, message.length)
-          setMeta("cursor", key, next.cursor)
-          setMeta("complete", key, next.complete)
-          setSessionPrefetch({
-            scope: serverSDK.scope,
-            directory: input.directory,
-            sessionID: input.sessionID,
-            limit: message.length,
-            cursor: next.cursor,
-            complete: next.complete,
-          })
-        })
-      })
-      .catch((error) => {
-        if (isNotFound(error) && !tracked(input.directory, input.sessionID)) return
-        throw error
-      })
-      .finally(() => {
-        setMeta(
-          produce((draft) => {
-            if (!tracked(input.directory, input.sessionID)) {
-              delete draft.loading[key]
-              return
-            }
-            draft.loading[key] = false
-          }),
-        )
-      })
  }

  return {
-    get data() {
-      return current()[0]
-    },
-    get set(): Setter {
-      return current()[1]
-    },
+    data,
+    set,
    get status() {
      return current()[0].status
    },
@@ -389,24 +69,20 @@ export const createDirSyncContext = (
    },
    get project() {
      const store = current()[0]
-      const match = Binary.search(serverSync.data.project, store.project, (p) => p.id)
+      const match = Binary.search(serverSync.data.project, store.project, (project) => project.id)
      if (match.found) return serverSync.data.project[match.index]
-      return undefined
    },
    session: {
-      get: getSession,
+      get(sessionID: string) {
+        const session = serverSync.session.get(sessionID)
+        if (session?.directory === directory) return session
+      },
      optimistic: {
        add(input: { directory?: string; sessionID: string; message: Message; parts: Part[] }) {
-          const _directory = input.directory ?? directory
-          const [, setStore] = target(input.directory)
-          setOptimistic(_directory, input.sessionID, { message: input.message, parts: input.parts })
-          setOptimisticAdd(setStore as (...args: unknown[]) => void, input)
+          serverSync.session.optimistic.add(input)
        },
        remove(input: { directory?: string; sessionID: string; messageID: string }) {
-          const _directory = input.directory ?? directory
-          const [, setStore] = target(input.directory)
-          clearOptimistic(_directory, input.sessionID, input.messageID)
-          setOptimisticRemove(setStore as (...args: unknown[]) => void, input)
+          serverSync.session.optimistic.remove(input)
        },
      },
      addOptimisticMessage(input: {
@@ -417,194 +93,48 @@ export const createDirSyncContext = (
        model: { providerID: string; modelID: string }
        variant?: string
      }) {
-        const message: Message = {
-          id: input.messageID,
+        serverSync.session.optimistic.add({
          sessionID: input.sessionID,
-          role: "user",
-          time: { created: Date.now() },
-          agent: input.agent,
-          model: { ...input.model, variant: input.variant },
-        }
-        const [, setStore] = target()
-        setOptimistic(directory, input.sessionID, { message, parts: input.parts })
-        setOptimisticAdd(setStore as (...args: unknown[]) => void, {
-          sessionID: input.sessionID,
-          message,
+          message: {
+            id: input.messageID,
+            sessionID: input.sessionID,
+            role: "user",
+            time: { created: Date.now() },
+            agent: input.agent,
+            model: { ...input.model, variant: input.variant },
+          },
          parts: input.parts,
        })
      },
-      async sync(sessionID: string, opts?: { force?: boolean }) {
-        const [store, setStore] = serverSync.child(directory)
-        const key = keyFor(directory, sessionID)
-
-        touch(directory, setStore, sessionID)
-
-        const seeded = getSessionPrefetch(serverSDK.scope, directory, sessionID)
-        if (seeded && store.message[sessionID] !== undefined && meta.limit[key] === undefined) {
-          batch(() => {
-            setMeta("limit", key, seeded.limit)
-            setMeta("cursor", key, seeded.cursor)
-            setMeta("complete", key, seeded.complete)
-            setMeta("loading", key, false)
-          })
-        }
-
-        return runInflight(inflight, key, async () => {
-          const pending = getSessionPrefetchPromise(serverSDK.scope, directory, sessionID)
-          if (pending) {
-            await pending
-            const seeded = getSessionPrefetch(serverSDK.scope, directory, sessionID)
-            if (seeded && store.message[sessionID] !== undefined && meta.limit[key] === undefined) {
-              batch(() => {
-                setMeta("limit", key, seeded.limit)
-                setMeta("cursor", key, seeded.cursor)
-                setMeta("complete", key, seeded.complete)
-                setMeta("loading", key, false)
-              })
-            }
-          }
-
-          const hasSession = Binary.search(store.session, sessionID, (s) => s.id).found
-          const cached = store.message[sessionID] !== undefined && meta.limit[key] !== undefined
-          if (cached && hasSession && !opts?.force) return
-
-          const limit = meta.limit[key] ?? initialMessagePageSize
-          const sessionReq =
-            hasSession && !opts?.force
-              ? Promise.resolve()
-              : retry(() => client.session.get({ sessionID }))
-                  .then((session) => {
-                    if (!tracked(directory, sessionID)) return
-                    const data = session.data
-                    if (!data) return
-                    setStore(
-                      "session",
-                      produce((draft) => {
-                        const match = Binary.search(draft, sessionID, (s) => s.id)
-                        if (match.found) {
-                          draft[match.index] = data
-                          return
-                        }
-                        draft.splice(match.index, 0, data)
-                      }),
-                    )
-                  })
-                  .catch((error) => {
-                    if (isNotFound(error) && !tracked(directory, sessionID)) return
-                    throw error
-                  })
-
-          const messagesReq =
-            cached && !opts?.force
-              ? Promise.resolve()
-              : loadMessages({
-                  directory,
-                  client,
-                  setStore,
-                  sessionID,
-                  limit,
-                })
-
-          await Promise.all([sessionReq, messagesReq])
-        })
+      async sync(sessionID: string, options?: { force?: boolean }) {
+        await serverSync.session.sync(sessionID, options)
+        index(sessionID)
      },
-      async diff(sessionID: string, opts?: { force?: boolean }) {
-        const [store, setStore] = serverSync.child(directory)
-        touch(directory, setStore, sessionID)
-        if (store.session_diff[sessionID] !== undefined && !opts?.force) return
-
-        const key = keyFor(directory, sessionID)
-        return runInflight(inflightDiff, key, () =>
-          retry(() => client.session.diff({ sessionID })).then((diff) => {
-            if (!tracked(directory, sessionID)) return
-            setStore("session_diff", sessionID, reconcile(list(diff.data), { key: "file" }))
-          }),
-        )
-      },
-      async todo(sessionID: string, opts?: { force?: boolean }) {
-        const [store, setStore] = serverSync.child(directory)
-        touch(directory, setStore, sessionID)
-        const existing = store.todo[sessionID]
-        const cached = serverSync.data.session_todo[sessionID]
-        if (existing !== undefined) {
-          if (cached === undefined) {
-            serverSync.todo.set(sessionID, existing)
-          }
-          if (!opts?.force) return
-        }
-
-        if (cached !== undefined) {
-          setStore("todo", sessionID, reconcile(cached, { key: "id" }))
-        }
-
-        const key = keyFor(directory, sessionID)
-        return runInflight(inflightTodo, key, () =>
-          retry(() => client.session.todo({ sessionID })).then((todo) => {
-            if (!tracked(directory, sessionID)) return
-            const list = todo.data ?? []
-            setStore("todo", sessionID, reconcile(list, { key: "id" }))
-            serverSync.todo.set(sessionID, list)
-          }),
-        )
-      },
-      history: {
-        more(sessionID: string) {
-          const store = current()[0]
-          const key = keyFor(directory, sessionID)
-          if (store.message[sessionID] === undefined) return false
-          if (meta.limit[key] === undefined) return false
-          if (meta.complete[key]) return false
-          return !!meta.cursor[key]
-        },
-        loading(sessionID: string) {
-          const key = keyFor(directory, sessionID)
-          return meta.loading[key] ?? false
-        },
-        async loadMore(sessionID: string, count?: number) {
-          const [, setStore] = serverSync.child(directory)
-          touch(directory, setStore, sessionID)
-          const key = keyFor(directory, sessionID)
-          const step = count ?? historyMessagePageSize
-          if (meta.loading[key]) return
-          if (meta.complete[key]) return
-          const before = meta.cursor[key]
-          if (!before) return
-
-          await loadMessages({
-            directory,
-            client,
-            setStore,
-            sessionID,
-            limit: step,
-            before,
-            mode: "prepend",
-          })
-        },
-      },
-      evict(sessionID: string, _directory = directory) {
-        const [, setStore] = serverSync.child(_directory)
-        seenFor(_directory).delete(sessionID)
-        evict(_directory, setStore, [sessionID])
+      diff: serverSync.session.diff,
+      todo: serverSync.session.todo,
+      history: serverSync.session.history,
+      evict(sessionID: string) {
+        serverSync.session.evict(sessionID)
      },
      fetch: async (count = 10) => {
-        const [store, setStore] = serverSync.child(directory)
-        setStore("limit", (x) => x + count)
-        await client.session.list().then((x) => {
-          const sessions = (x.data ?? [])
-            .filter((s) => !!s?.id)
-            .sort((a, b) => cmp(a.id, b.id))
-            .slice(0, store.limit)
-          setStore("session", reconcile(sessions, { key: "id" }))
-        })
+        const [store, setStore] = current()
+        setStore("limit", (value) => value + count)
+        const response = await client.session.list()
+        const sessions = (response.data ?? [])
+          .filter((session) => !!session?.id)
+          .sort((a, b) => cmp(a.id, b.id))
+          .slice(0, store.limit)
+        sessions.forEach(serverSync.session.remember)
+        setStore("session", reconcile(sessions, { key: "id" }))
      },
      more: createMemo(() => current()[0].session.length >= current()[0].limit),
      archive: async (sessionID: string) => {
-        const [, setStore] = serverSync.child(directory)
-        await client.session.update({ sessionID, time: { archived: Date.now() } })
-        setStore(
+        await serverSDK.client.session.update({ sessionID, time: { archived: Date.now() } })
+        current()[1](
+          "session",
          produce((draft) => {
-            const match = Binary.search(draft.session, sessionID, (s) => s.id)
-            if (match.found) draft.session.splice(match.index, 1)
+            const match = Binary.search(draft, sessionID, (session) => session.id)
+            if (match.found) draft.splice(match.index, 1)
          }),
        )
      },
@@ -2,7 +2,7 @@ import { describe, expect, test } from "bun:test"
 import { createStore } from "solid-js/store"
 import { QueryClient } from "@tanstack/solid-query"
 import type { Config, OpencodeClient, Project } from "@opencode-ai/sdk/v2/client"
-import type { NormalizedProviderListResponse } from "@opencode-ai/ui/context"
+import type { NormalizedProviderListResponse } from "@opencode-ai/session-ui/context"
 import { bootstrapDirectory, loadPathQuery, loadProvidersQuery } from "./bootstrap"
 import type { State, VcsCache } from "./types"
 import { ServerScope } from "@/utils/server-scope"
@@ -7,28 +7,25 @@ import type {
  ProviderAuthResponse,
  QuestionRequest,
  Session,
-  Todo,
 } from "@opencode-ai/sdk/v2/client"
 import { showToast } from "@/utils/toast"
 import { getFilename } from "@opencode-ai/core/util/path"
 import { retry } from "@opencode-ai/core/util/retry"
 import { batch } from "solid-js"
-import { reconcile, type SetStoreFunction, type Store } from "solid-js/store"
+import { produce, reconcile, type SetStoreFunction, type Store } from "solid-js/store"
 import type { State, VcsCache } from "./types"
+import type { ServerSession } from "../server-session"
 import { cmp, normalizeAgentList, normalizeProviderList } from "./utils"
 import { formatServerError } from "@/utils/server-errors"
 import { QueryClient, queryOptions } from "@tanstack/solid-query"
 import { loadMcpQuery } from "../server-sync"
-import { NormalizedProviderListResponse } from "@opencode-ai/ui/context"
+import { NormalizedProviderListResponse } from "@opencode-ai/session-ui/context"
 import { ScopedKey, type ServerScope } from "@/utils/server-scope"

 type GlobalStore = {
  ready: boolean
  path: Path
  project: Project[]
-  session_todo: {
-    [sessionID: string]: Todo[]
-  }
  provider: NormalizedProviderListResponse
  provider_auth: ProviderAuthResponse
  config: Config
@@ -215,6 +212,7 @@ export async function bootstrapDirectory(input: {
    provider: NormalizedProviderListResponse
  }
  queryClient: QueryClient
+  session?: ServerSession
 }) {
  const loading = input.store.status !== "complete"
  const seededProject = projectID(input.directory, input.global.project)
@@ -238,7 +236,30 @@ export async function bootstrapDirectory(input: {
          .then((data) => input.setStore("agent", data)),
      () =>
        retry(() => input.sdk.config.get().then((x) => input.setStore("config", reconcile(x.data!, { merge: false })))),
-      () => retry(() => input.sdk.session.status().then((x) => input.setStore("session_status", x.data!))),
+      () =>
+        retry(() =>
+          input.sdk.session.status().then(async (x) => {
+            if (input.session) {
+              const statuses = x.data ?? {}
+              await Promise.all(
+                Object.keys(statuses).map((sessionID) => input.session!.resolve(sessionID).catch(() => undefined)),
+              )
+              input.session.set(
+                "session_status",
+                produce((draft) => {
+                  for (const sessionID of Object.keys(draft)) {
+                    if (statuses[sessionID]) continue
+                    if (input.session?.get(sessionID)?.directory === input.directory) delete draft[sessionID]
+                  }
+                }),
+              )
+              for (const [sessionID, status] of Object.entries(statuses)) {
+                input.session.set("session_status", sessionID, reconcile(status))
+              }
+            }
+            if (!input.session) input.setStore("session_status", x.data!)
+          }),
+        ),
      !seededProject &&
        (() => retry(() => input.sdk.project.current()).then((x) => input.setStore("project", x.data!.id))),
      !seededPath &&
@@ -263,21 +284,25 @@ export async function bootstrapDirectory(input: {
            const grouped = groupBySession(
              (x.data ?? []).filter((perm): perm is PermissionRequest => !!perm?.id && !!perm.sessionID),
            )
-            return warmSessions({ ids, store: input.store, setStore: input.setStore, sdk: input.sdk }).then(() =>
+            const warm = input.session
+              ? Promise.all(ids.map((sessionID) => input.session!.resolve(sessionID))).then(() => undefined)
+              : warmSessions({ ids, store: input.store, setStore: input.setStore, sdk: input.sdk })
+            return warm.then(() =>
              batch(() => {
-                for (const sessionID of Object.keys(input.store.permission)) {
+                const current = input.session?.data.permission ?? input.store.permission
+                for (const sessionID of Object.keys(current)) {
                  if (grouped[sessionID]) continue
-                  input.setStore("permission", sessionID, [])
+                  if (input.session?.get(sessionID)?.directory !== input.directory) continue
+                  if (input.session) input.session.set("permission", sessionID, [])
+                  if (!input.session) input.setStore("permission", sessionID, [])
                }
                for (const [sessionID, permissions] of Object.entries(grouped)) {
-                  input.setStore(
-                    "permission",
-                    sessionID,
-                    reconcile(
-                      permissions.filter((p) => !!p?.id).sort((a, b) => cmp(a.id, b.id)),
-                      { key: "id" },
-                    ),
+                  const value = reconcile(
+                    permissions.filter((p) => !!p?.id).sort((a, b) => cmp(a.id, b.id)),
+                    { key: "id" },
                  )
+                  if (input.session) input.session.set("permission", sessionID, value)
+                  if (!input.session) input.setStore("permission", sessionID, value)
                }
              }),
            )
@@ -288,21 +313,25 @@ export async function bootstrapDirectory(input: {
          input.sdk.question.list().then((x) => {
            const ids = (x.data ?? []).map((question) => question?.sessionID).filter((id): id is string => !!id)
            const grouped = groupBySession((x.data ?? []).filter((q): q is QuestionRequest => !!q?.id && !!q.sessionID))
-            return warmSessions({ ids, store: input.store, setStore: input.setStore, sdk: input.sdk }).then(() =>
+            const warm = input.session
+              ? Promise.all(ids.map((sessionID) => input.session!.resolve(sessionID))).then(() => undefined)
+              : warmSessions({ ids, store: input.store, setStore: input.setStore, sdk: input.sdk })
+            return warm.then(() =>
              batch(() => {
-                for (const sessionID of Object.keys(input.store.question)) {
+                const current = input.session?.data.question ?? input.store.question
+                for (const sessionID of Object.keys(current)) {
                  if (grouped[sessionID]) continue
-                  input.setStore("question", sessionID, [])
+                  if (input.session?.get(sessionID)?.directory !== input.directory) continue
+                  if (input.session) input.session.set("question", sessionID, [])
+                  if (!input.session) input.setStore("question", sessionID, [])
                }
                for (const [sessionID, questions] of Object.entries(grouped)) {
-                  input.setStore(
-                    "question",
-                    sessionID,
-                    reconcile(
-                      questions.filter((q) => !!q?.id).sort((a, b) => cmp(a.id, b.id)),
-                      { key: "id" },
-                    ),
+                  const value = reconcile(
+                    questions.filter((q) => !!q?.id).sort((a, b) => cmp(a.id, b.id)),
+                    { key: "id" },
                  )
+                  if (input.session) input.session.set("question", sessionID, value)
+                  if (!input.session) input.setStore("question", sessionID, value)
                }
              }),
            )
@@ -1,7 +1,7 @@
 import { beforeAll, describe, expect, mock, test } from "bun:test"
 import { createRoot, getOwner, type Owner } from "solid-js"
 import { createStore } from "solid-js/store"
-import type { NormalizedProviderListResponse } from "@opencode-ai/ui/context"
+import type { NormalizedProviderListResponse } from "@opencode-ai/session-ui/context"
 import type { State } from "./types"
 import type { QueryOptionsApi } from "../server-sync"
 import { ServerScope } from "@/utils/server-scope"
@@ -17,7 +17,7 @@ import { canDisposeDirectory, pickDirectoriesToEvict } from "./eviction"
 import { useQuery } from "@tanstack/solid-query"
 import { QueryOptionsApi } from "../server-sync"
 import { directoryKey, type DirectoryKey } from "./utils"
-import { NormalizedProviderListResponse } from "@opencode-ai/ui/context"
+import { NormalizedProviderListResponse } from "@opencode-ai/session-ui/context"
 import type { ServerScope } from "@/utils/server-scope"

 export function createChildStoreManager(input: {
@@ -17,6 +17,21 @@ import { dropSessionCaches } from "./session-cache"
 import { diffs as list, message as clean } from "@/utils/diffs"

 const SKIP_PARTS = new Set(["patch", "step-start", "step-finish"])
+const SESSION_CONTENT_EVENTS = new Set([
+  "session.diff",
+  "todo.updated",
+  "session.status",
+  "message.updated",
+  "message.removed",
+  "message.part.updated",
+  "message.part.removed",
+  "message.part.delta",
+  "permission.asked",
+  "permission.replied",
+  "question.asked",
+  "question.replied",
+  "question.rejected",
+])

 export function applyGlobalEvent(input: {
  event: { type: string; properties?: unknown }
@@ -100,8 +115,11 @@ export function applyDirectoryEvent(input: {
  vcsCache?: VcsCache
  setSessionTodo?: (sessionID: string, todos: Todo[] | undefined) => void
  retainedLimit?: number
+  sessionContent?: boolean
+  permission?: State["permission"]
 }) {
  const event = input.event
+  if (input.sessionContent === false && SESSION_CONTENT_EVENTS.has(event.type)) return
  const limit = Math.max(input.store.limit, input.retainedLimit ?? 0)
  switch (event.type) {
    case "server.instance.disposed": {
@@ -117,7 +135,7 @@ export function applyDirectoryEvent(input: {
      }
      const next = input.store.session.slice()
      next.splice(result.index, 0, info)
-      const trimmed = trimSessions(next, { limit, permission: input.store.permission })
+      const trimmed = trimSessions(next, { limit, permission: input.permission ?? input.store.permission })
      input.setStore("session", reconcile(trimmed, { key: "id" }))
      cleanupDroppedSessionCaches(input.store, input.setStore, trimmed, input.setSessionTodo)
      if (!info.parentID) input.setStore("sessionTotal", (value) => value + 1)
@@ -147,7 +165,7 @@ export function applyDirectoryEvent(input: {
      }
      const next = input.store.session.slice()
      next.splice(result.index, 0, info)
-      const trimmed = trimSessions(next, { limit, permission: input.store.permission })
+      const trimmed = trimSessions(next, { limit, permission: input.permission ?? input.store.permission })
      input.setStore("session", reconcile(trimmed, { key: "id" }))
      cleanupDroppedSessionCaches(input.store, input.setStore, trimmed, input.setSessionTodo)
      break
@@ -1,139 +0,0 @@
-import { describe, expect, test } from "bun:test"
-import {
-  clearSessionPrefetch,
-  clearSessionPrefetchDirectory,
-  getSessionPrefetch,
-  runSessionPrefetch,
-  setSessionPrefetch,
-  shouldSkipSessionPrefetch,
-} from "./session-prefetch"
-import { ServerScope } from "@/utils/server-scope"
-
-const scope = ServerScope.local
-
-describe("session prefetch", () => {
-  test("stores and clears message metadata by directory", () => {
-    clearSessionPrefetch(scope, "/tmp/a", ["ses_1"])
-    clearSessionPrefetch(scope, "/tmp/b", ["ses_1"])
-
-    setSessionPrefetch({
-      directory: "/tmp/a",
-      scope,
-      sessionID: "ses_1",
-      limit: 200,
-      cursor: "abc",
-      complete: false,
-      at: 123,
-    })
-
-    expect(getSessionPrefetch(scope, "/tmp/a", "ses_1")).toEqual({
-      limit: 200,
-      cursor: "abc",
-      complete: false,
-      at: 123,
-    })
-    expect(getSessionPrefetch(scope, "/tmp/b", "ses_1")).toBeUndefined()
-
-    clearSessionPrefetch(scope, "/tmp/a", ["ses_1"])
-
-    expect(getSessionPrefetch(scope, "/tmp/a", "ses_1")).toBeUndefined()
-  })
-
-  test("dedupes inflight work", async () => {
-    clearSessionPrefetch(scope, "/tmp/c", ["ses_2"])
-
-    let calls = 0
-    const run = () =>
-      runSessionPrefetch({
-        directory: "/tmp/c",
-        scope,
-        sessionID: "ses_2",
-        task: async () => {
-          calls += 1
-          return { limit: 100, cursor: "next", complete: true, at: 456 }
-        },
-      })
-
-    const [a, b] = await Promise.all([run(), run()])
-
-    expect(calls).toBe(1)
-    expect(a).toEqual({ limit: 100, cursor: "next", complete: true, at: 456 })
-    expect(b).toEqual({ limit: 100, cursor: "next", complete: true, at: 456 })
-  })
-
-  test("clears a whole directory", () => {
-    setSessionPrefetch({
-      scope,
-      directory: "/tmp/d",
-      sessionID: "ses_1",
-      limit: 10,
-      cursor: "a",
-      complete: true,
-      at: 1,
-    })
-    setSessionPrefetch({
-      scope,
-      directory: "/tmp/d",
-      sessionID: "ses_2",
-      limit: 20,
-      cursor: "b",
-      complete: false,
-      at: 2,
-    })
-    setSessionPrefetch({
-      scope,
-      directory: "/tmp/e",
-      sessionID: "ses_1",
-      limit: 30,
-      cursor: "c",
-      complete: true,
-      at: 3,
-    })
-
-    clearSessionPrefetchDirectory(scope, "/tmp/d")
-
-    expect(getSessionPrefetch(scope, "/tmp/d", "ses_1")).toBeUndefined()
-    expect(getSessionPrefetch(scope, "/tmp/d", "ses_2")).toBeUndefined()
-    expect(getSessionPrefetch(scope, "/tmp/e", "ses_1")).toEqual({ limit: 30, cursor: "c", complete: true, at: 3 })
-  })
-
-  test("isolates identical directories and sessions by server scope", () => {
-    const remote = "https://debian.example" as ServerScope
-    setSessionPrefetch({ scope, directory: "/repo", sessionID: "ses_1", limit: 10, complete: true, at: 1 })
-    setSessionPrefetch({ scope: remote, directory: "/repo", sessionID: "ses_1", limit: 20, complete: true, at: 2 })
-
-    expect(getSessionPrefetch(scope, "/repo", "ses_1")?.limit).toBe(10)
-    expect(getSessionPrefetch(remote, "/repo", "ses_1")?.limit).toBe(20)
-  })
-
-  test("refreshes stale first-page prefetched history", () => {
-    expect(
-      shouldSkipSessionPrefetch({
-        message: true,
-        info: { limit: 200, cursor: "x", complete: false, at: 1 },
-        chunk: 200,
-        now: 1 + 15_001,
-      }),
-    ).toBe(false)
-  })
-
-  test("keeps deeper or complete history cached", () => {
-    expect(
-      shouldSkipSessionPrefetch({
-        message: true,
-        info: { limit: 400, cursor: "x", complete: false, at: 1 },
-        chunk: 200,
-        now: 1 + 15_001,
-      }),
-    ).toBe(true)
-
-    expect(
-      shouldSkipSessionPrefetch({
-        message: true,
-        info: { limit: 120, complete: true, at: 1 },
-        chunk: 200,
-        now: 1 + 15_001,
-      }),
-    ).toBe(true)
-  })
-})
@@ -1,107 +0,0 @@
-import { ScopedKey, type ServerScope } from "@/utils/server-scope"
-
-const key = (scope: ServerScope, directory: string, sessionID: string) => ScopedKey.from(scope, directory, sessionID)
-
-export const SESSION_PREFETCH_TTL = 15_000
-
-type Meta = {
-  limit: number
-  cursor?: string
-  complete: boolean
-  at: number
-}
-
-export function shouldSkipSessionPrefetch(input: { message: boolean; info?: Meta; chunk: number; now?: number }) {
-  if (input.message) {
-    if (!input.info) return true
-    if (input.info.complete) return true
-    if (input.info.limit > input.chunk) return true
-  } else {
-    if (!input.info) return false
-  }
-
-  return (input.now ?? Date.now()) - input.info.at < SESSION_PREFETCH_TTL
-}
-
-const cache = new Map<string, Meta>()
-const inflight = new Map<string, Promise<Meta | undefined>>()
-const rev = new Map<string, number>()
-
-const version = (id: string) => rev.get(id) ?? 0
-
-export function getSessionPrefetch(scope: ServerScope, directory: string, sessionID: string) {
-  return cache.get(key(scope, directory, sessionID))
-}
-
-export function getSessionPrefetchPromise(scope: ServerScope, directory: string, sessionID: string) {
-  return inflight.get(key(scope, directory, sessionID))
-}
-
-export function clearSessionPrefetchInflight(scope: ServerScope) {
-  const prefix = ScopedKey.prefix(scope)
-  for (const id of inflight.keys()) {
-    if (id.startsWith(prefix)) inflight.delete(id)
-  }
-}
-
-export function isSessionPrefetchCurrent(scope: ServerScope, directory: string, sessionID: string, value: number) {
-  return version(key(scope, directory, sessionID)) === value
-}
-
-export function runSessionPrefetch(input: {
-  directory: string
-  scope: ServerScope
-  sessionID: string
-  task: (value: number) => Promise<Meta | undefined>
-}) {
-  const id = key(input.scope, input.directory, input.sessionID)
-  const pending = inflight.get(id)
-  if (pending) return pending
-
-  const value = version(id)
-
-  const promise = input.task(value).finally(() => {
-    if (inflight.get(id) === promise) inflight.delete(id)
-  })
-
-  inflight.set(id, promise)
-  return promise
-}
-
-export function setSessionPrefetch(input: {
-  directory: string
-  scope: ServerScope
-  sessionID: string
-  limit: number
-  cursor?: string
-  complete: boolean
-  at?: number
-}) {
-  cache.set(key(input.scope, input.directory, input.sessionID), {
-    limit: input.limit,
-    cursor: input.cursor,
-    complete: input.complete,
-    at: input.at ?? Date.now(),
-  })
-}
-
-export function clearSessionPrefetch(scope: ServerScope, directory: string, sessionIDs: Iterable<string>) {
-  for (const sessionID of sessionIDs) {
-    if (!sessionID) continue
-    const id = key(scope, directory, sessionID)
-    rev.set(id, version(id) + 1)
-    cache.delete(id)
-    inflight.delete(id)
-  }
-}
-
-export function clearSessionPrefetchDirectory(scope: ServerScope, directory: string) {
-  const prefix = ScopedKey.prefix(scope, directory)
-  const keys = new Set([...cache.keys(), ...inflight.keys()])
-  for (const id of keys) {
-    if (!id.startsWith(prefix)) continue
-    rev.set(id, version(id) + 1)
-    cache.delete(id)
-    inflight.delete(id)
-  }
-}
@@ -15,7 +15,7 @@ import type {
  Todo,
  VcsInfo,
 } from "@opencode-ai/sdk/v2/client"
-import { NormalizedProviderListResponse } from "@opencode-ai/ui/context"
+import { NormalizedProviderListResponse } from "@opencode-ai/session-ui/context"
 import type { Accessor } from "solid-js"
 import type { SetStoreFunction, Store } from "solid-js/store"

@@ -1,5 +1,5 @@
 import type { Agent, Project, ProviderListResponse } from "@opencode-ai/sdk/v2/client"
-import { NormalizedProviderListResponse } from "@opencode-ai/ui/context"
+import { NormalizedProviderListResponse } from "@opencode-ai/session-ui/context"
 export { pathKey as directoryKey, type PathKey as DirectoryKey } from "@/utils/path-key"

 export const cmp = (a: string, b: string) => (a < b ? -1 : a > b ? 1 : 0)
@@ -8,13 +8,11 @@ import { createServerSyncContext } from "./server-sync"
 import { getOwner } from "solid-js/web"
 import { QueryClient } from "@tanstack/solid-query"
 import type { ServerScope } from "@/utils/server-scope"
-import { createSessionPlacementStore } from "@/utils/session-placement"

 export const { use: useGlobal, provider: GlobalProvider } = createSimpleContext({
  name: "Global",
  init: () => {
    const server = useServer()
-    const sessionPlacement = createSessionPlacementStore()
    const serverHealth = useServerHealth(
      () => server.list,
      () => true,
@@ -87,7 +85,6 @@ export const { use: useGlobal, provider: GlobalProvider } = createSimpleContext(
          },
        },
      },
-      sessionPlacement,
      ensureServerCtx(conn: ServerConnection.Any) {
        return ensureServerCtx(conn)
      },
@@ -0,0 +1,98 @@
+import { describe, expect, test } from "bun:test"
+import type { OpencodeClient, Session } from "@opencode-ai/sdk/v2/client"
+import { createServerSession } from "./server-session"
+
+const session = (id: string, parentID?: string): Session => ({
+  id,
+  slug: id,
+  projectID: "project",
+  directory: "/repo",
+  title: id,
+  version: "1",
+  parentID,
+  time: { created: 1, updated: 1 },
+})
+
+function setup(sessions: Record<string, Session>) {
+  const get: unknown[] = []
+  const messages: unknown[] = []
+  const client = {
+    session: {
+      get: async (input: unknown) => {
+        get.push(input)
+        const id = (input as { sessionID: string }).sessionID
+        return { data: sessions[id] }
+      },
+      messages: async (input: unknown) => {
+        messages.push(input)
+        return { data: [], response: { headers: new Headers() } }
+      },
+      diff: async () => ({ data: [] }),
+      todo: async () => ({ data: [] }),
+    },
+  } as unknown as OpencodeClient
+  return { get, messages, store: createServerSession(client) }
+}
+
+describe("server session", () => {
+  test("resolves lineage by session ID without directory", async () => {
+    const ctx = setup({ child: session("child", "root"), root: session("root") })
+
+    const result = await ctx.store.lineage.resolve("child")
+
+    expect(result.root.id).toBe("root")
+    expect(ctx.get).toEqual([{ sessionID: "child" }, { sessionID: "root" }])
+    expect(ctx.store.lineage.peek("child")).toEqual(result)
+  })
+
+  test("loads session content through the server client", async () => {
+    const ctx = setup({ root: session("root") })
+
+    await ctx.store.sync("root")
+
+    expect(ctx.get).toEqual([{ sessionID: "root" }])
+    expect(ctx.messages).toEqual([{ sessionID: "root", limit: 2, before: undefined }])
+    expect(ctx.store.data.message.root).toEqual([])
+  })
+
+  test("applies events without a directory store", () => {
+    const ctx = setup({})
+    ctx.store.apply({ type: "session.created", properties: { info: session("root") } })
+    ctx.store.apply({ type: "session.status", properties: { sessionID: "root", status: { type: "busy" } } })
+
+    expect(ctx.store.get("root")?.directory).toBe("/repo")
+    expect(ctx.store.data.session_working("root")).toBe(true)
+  })
+
+  test("preserves pinned session content under server-wide cache pressure", () => {
+    const ctx = setup({})
+    ctx.store.pin("active")
+    ctx.store.optimistic.add({
+      sessionID: "active",
+      message: {
+        id: "message",
+        sessionID: "active",
+        role: "assistant",
+        time: { created: 1 },
+        parentID: "parent",
+        modelID: "model",
+        providerID: "provider",
+        mode: "build",
+        agent: "agent",
+        path: { cwd: "/repo", root: "/repo" },
+        cost: 0,
+        tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
+      },
+      parts: [],
+    })
+
+    for (let index = 0; index < 50; index++) {
+      ctx.store.apply({
+        type: "session.status",
+        properties: { sessionID: `session-${index}`, status: { type: "busy" } },
+      })
+    }
+
+    expect(ctx.store.data.message.active?.map((message) => message.id)).toEqual(["message"])
+  })
+})
@@ -0,0 +1,626 @@
+import { Binary } from "@opencode-ai/core/util/binary"
+import { retry } from "@opencode-ai/core/util/retry"
+import type {
+  Message,
+  OpencodeClient,
+  Part,
+  PermissionRequest,
+  QuestionRequest,
+  Session,
+  SessionStatus,
+  SnapshotFileDiff,
+  Todo,
+} from "@opencode-ai/sdk/v2/client"
+import { batch } from "solid-js"
+import { createStore, produce, reconcile } from "solid-js/store"
+import { diffs as cleanDiffs, message as cleanMessage } from "@/utils/diffs"
+import { rootSession } from "@/utils/session-route"
+import { dropSessionCaches, pickSessionCacheEvictions, SESSION_CACHE_LIMIT } from "./global-sync/session-cache"
+
+const cmp = (a: string, b: string) => (a < b ? -1 : a > b ? 1 : 0)
+const SKIP_PARTS = new Set(["patch", "step-start", "step-finish"])
+const initialMessagePageSize = 2
+const historyMessagePageSize = 200
+const sessionInfoLimit = 2_048
+
+type OptimisticItem = {
+  message: Message
+  parts: Part[]
+}
+
+const hasParts = (parts: Part[] | undefined, want: Part[]) => {
+  if (!parts) return want.length === 0
+  return want.every((part) => Binary.search(parts, part.id, (item) => item.id).found)
+}
+
+function mergeOptimisticPage(
+  page: { session: Message[]; part: { id: string; part: Part[] }[]; cursor?: string; complete: boolean },
+  items: OptimisticItem[],
+) {
+  if (items.length === 0) return { ...page, confirmed: [] as string[] }
+  const session = [...page.session]
+  const part = new Map(page.part.map((item) => [item.id, item.part]))
+  const confirmed: string[] = []
+  for (const item of items) {
+    const result = Binary.search(session, item.message.id, (message) => message.id)
+    if (!result.found) session.splice(result.index, 0, item.message)
+    const current = part.get(item.message.id)
+    if (result.found && hasParts(current, item.parts)) {
+      confirmed.push(item.message.id)
+      continue
+    }
+    part.set(item.message.id, merge(current ?? [], item.parts))
+  }
+  return {
+    ...page,
+    session,
+    part: [...part.entries()].sort((a, b) => cmp(a[0], b[0])).map(([id, parts]) => ({ id, part: parts })),
+    confirmed,
+  }
+}
+
+function runInflight(map: Map<string, Promise<void>>, key: string, task: () => Promise<void>) {
+  const pending = map.get(key)
+  if (pending) return pending
+  const promise = task().finally(() => {
+    if (map.get(key) === promise) map.delete(key)
+  })
+  map.set(key, promise)
+  return promise
+}
+
+function merge<T extends { id: string }>(a: readonly T[], b: readonly T[]) {
+  const items = new Map(a.map((item) => [item.id, item] as const))
+  for (const item of b) items.set(item.id, item)
+  return [...items.values()].sort((x, y) => cmp(x.id, y.id))
+}
+
+export function createServerSession(client: OpencodeClient) {
+  const [data, setData] = createStore({
+    info: {} as Record<string, Session | undefined>,
+    session_status: {} as Record<string, SessionStatus>,
+    session_diff: {} as Record<string, SnapshotFileDiff[]>,
+    todo: {} as Record<string, Todo[]>,
+    permission: {} as Record<string, PermissionRequest[]>,
+    question: {} as Record<string, QuestionRequest[]>,
+    message: {} as Record<string, Message[]>,
+    part: {} as Record<string, Part[]>,
+    part_text_accum_delta: {} as Record<string, string>,
+    session_working(id: string) {
+      return (this.session_status[id]?.type ?? "idle") !== "idle"
+    },
+  })
+  const requests = new Map<string, Promise<Session>>()
+  const inflight = new Map<string, Promise<void>>()
+  const inflightDiff = new Map<string, Promise<void>>()
+  const inflightTodo = new Map<string, Promise<void>>()
+  const optimistic = new Map<string, Map<string, OptimisticItem>>()
+  const seen = new Set<string>()
+  const infoSeen = new Set<string>()
+  const pinned = new Map<string, number>()
+  const generations = new Map<string, number>()
+  const [meta, setMeta] = createStore({
+    limit: {} as Record<string, number | undefined>,
+    cursor: {} as Record<string, string | undefined>,
+    complete: {} as Record<string, boolean | undefined>,
+    loading: {} as Record<string, boolean | undefined>,
+    at: {} as Record<string, number | undefined>,
+  })
+
+  const remember = (session: Session) => {
+    setData("info", session.id, reconcile(session))
+    infoSeen.delete(session.id)
+    infoSeen.add(session.id)
+    if (infoSeen.size > sessionInfoLimit) {
+      const preserve = new Set([
+        ...pinned.keys(),
+        ...requests.keys(),
+        ...Object.entries(data.permission)
+          .filter(([, items]) => items.length > 0)
+          .map(([sessionID]) => sessionID),
+        ...Object.entries(data.question)
+          .filter(([, items]) => items.length > 0)
+          .map(([sessionID]) => sessionID),
+        ...Object.entries(data.session_status)
+          .filter(([, status]) => status.type !== "idle")
+          .map(([sessionID]) => sessionID),
+      ])
+      for (const sessionID of preserve) {
+        let current = data.info[sessionID]
+        while (current) {
+          preserve.add(current.id)
+          current = current.parentID ? data.info[current.parentID] : undefined
+        }
+      }
+      const stale: string[] = []
+      for (const sessionID of infoSeen) {
+        if (infoSeen.size - stale.length <= sessionInfoLimit) break
+        if (!preserve.has(sessionID)) stale.push(sessionID)
+      }
+      stale.forEach((sessionID) => infoSeen.delete(sessionID))
+      setData(
+        "info",
+        produce((draft) => stale.forEach((sessionID) => delete draft[sessionID])),
+      )
+    }
+    return session
+  }
+
+  const resolve = (sessionID: string, options?: { force?: boolean }) => {
+    const cached = data.info[sessionID]
+    if (cached && !options?.force) return Promise.resolve(cached)
+    const pending = requests.get(sessionID)
+    if (pending) return pending
+    const generation = generations.get(sessionID) ?? 0
+    const request = client.session.get({ sessionID }).then((result) => {
+      if (!result.data) throw new Error(`Session not found: ${sessionID}`)
+      if ((generations.get(sessionID) ?? 0) !== generation) return result.data
+      return remember(result.data)
+    })
+    requests.set(sessionID, request)
+    void request.then(
+      () => {
+        if (requests.get(sessionID) === request) requests.delete(sessionID)
+      },
+      () => {
+        if (requests.get(sessionID) === request) requests.delete(sessionID)
+      },
+    )
+    return request
+  }
+
+  const peekLineage = (sessionID: string) => {
+    const session = data.info[sessionID]
+    if (!session) return
+    const seen = new Set([session.id])
+    let root = session
+    while (root.parentID) {
+      if (seen.has(root.parentID)) throw new Error(`Session parent cycle: ${root.parentID}`)
+      seen.add(root.parentID)
+      const parent = data.info[root.parentID]
+      if (!parent) return
+      root = parent
+    }
+    return { session, root }
+  }
+
+  const clearOptimistic = (sessionID: string, messageID?: string) => {
+    if (!messageID) {
+      optimistic.delete(sessionID)
+      return
+    }
+    const items = optimistic.get(sessionID)
+    if (!items) return
+    items.delete(messageID)
+    if (items.size === 0) optimistic.delete(sessionID)
+  }
+
+  const evict = (sessionIDs: string[]) => {
+    if (sessionIDs.length === 0) return
+    sessionIDs.forEach((sessionID) => {
+      generations.set(sessionID, (generations.get(sessionID) ?? 0) + 1)
+      clearOptimistic(sessionID)
+      requests.delete(sessionID)
+      inflight.delete(sessionID)
+      inflightDiff.delete(sessionID)
+      inflightTodo.delete(sessionID)
+    })
+    setData(
+      produce((draft) => {
+        dropSessionCaches(draft, sessionIDs)
+      }),
+    )
+    setMeta(
+      produce((draft) => {
+        for (const sessionID of sessionIDs) {
+          delete draft.limit[sessionID]
+          delete draft.cursor[sessionID]
+          delete draft.complete[sessionID]
+          delete draft.loading[sessionID]
+          delete draft.at[sessionID]
+        }
+      }),
+    )
+  }
+
+  const protectedSessions = () =>
+    new Set([
+      ...pinned.keys(),
+      ...requests.keys(),
+      ...inflight.keys(),
+      ...inflightDiff.keys(),
+      ...inflightTodo.keys(),
+      ...optimistic.keys(),
+      ...Object.entries(data.permission)
+        .filter(([, items]) => items.length > 0)
+        .map(([sessionID]) => sessionID),
+      ...Object.entries(data.question)
+        .filter(([, items]) => items.length > 0)
+        .map(([sessionID]) => sessionID),
+      ...Object.entries(data.session_status)
+        .filter(([, status]) => status.type !== "idle")
+        .map(([sessionID]) => sessionID),
+    ])
+
+  const touch = (sessionID: string) =>
+    evict(
+      pickSessionCacheEvictions({ seen, keep: sessionID, limit: SESSION_CACHE_LIMIT, preserve: protectedSessions() }),
+    )
+
+  const fetchMessages = async (sessionID: string, limit: number, before?: string) => {
+    const response = await retry(() => client.session.messages({ sessionID, limit, before }))
+    const items = (response.data ?? []).filter((item) => !!item?.info?.id)
+    return {
+      session: items.map((item) => cleanMessage(item.info)).sort((a, b) => cmp(a.id, b.id)),
+      part: items.map((item) => ({
+        id: item.info.id,
+        part: item.parts.filter((part) => !!part?.id).sort((a, b) => cmp(a.id, b.id)),
+      })),
+      cursor: response.response.headers.get("x-next-cursor") ?? undefined,
+      complete: !response.response.headers.get("x-next-cursor"),
+    }
+  }
+
+  const loadMessages = async (sessionID: string, limit: number, before?: string, mode?: "replace" | "prepend") => {
+    if (meta.loading[sessionID]) return
+    const generation = generations.get(sessionID) ?? 0
+    setMeta("loading", sessionID, true)
+    await fetchMessages(sessionID, limit, before)
+      .then((page) => {
+        if ((generations.get(sessionID) ?? 0) !== generation) return
+        const next = mergeOptimisticPage(page, [...(optimistic.get(sessionID)?.values() ?? [])])
+        next.confirmed.forEach((messageID) => clearOptimistic(sessionID, messageID))
+        const messages = mode === "prepend" ? merge(data.message[sessionID] ?? [], next.session) : next.session
+        batch(() => {
+          setData("message", sessionID, reconcile(messages, { key: "id" }))
+          for (const item of next.part) {
+            const parts = item.part.filter((part) => !SKIP_PARTS.has(part.type))
+            if (parts.length) setData("part", item.id, reconcile(parts, { key: "id" }))
+          }
+          setMeta("limit", sessionID, messages.length)
+          setMeta("cursor", sessionID, next.cursor)
+          setMeta("complete", sessionID, next.complete)
+          setMeta("at", sessionID, Date.now())
+        })
+      })
+      .finally(() => {
+        if ((generations.get(sessionID) ?? 0) === generation) setMeta("loading", sessionID, false)
+      })
+  }
+
+  const sync = (sessionID: string, options?: { force?: boolean; messageLimit?: number }) => {
+    touch(sessionID)
+    return runInflight(inflight, sessionID, async () => {
+      const cached = data.message[sessionID] !== undefined && meta.limit[sessionID] !== undefined
+      if (cached && data.info[sessionID] && !options?.force) return
+      await Promise.all([
+        resolve(sessionID, options),
+        cached && !options?.force
+          ? Promise.resolve()
+          : loadMessages(sessionID, options?.messageLimit ?? meta.limit[sessionID] ?? initialMessagePageSize),
+      ])
+    })
+  }
+
+  const prefetch = async (sessionID: string, limit: number) => {
+    touch(sessionID)
+    await inflight.get(sessionID)
+    if (
+      Date.now() - (meta.at[sessionID] ?? 0) <= 15_000 &&
+      (meta.complete[sessionID] || (data.message[sessionID]?.length ?? 0) >= limit)
+    )
+      return
+    await runInflight(inflight, sessionID, () => loadMessages(sessionID, limit))
+  }
+
+  const eventSessionID = (event: { type: string; properties?: unknown }) => {
+    const properties = event.properties
+    if (!properties || typeof properties !== "object") return
+    if ("sessionID" in properties && typeof properties.sessionID === "string") return properties.sessionID
+    if (
+      "info" in properties &&
+      properties.info &&
+      typeof properties.info === "object" &&
+      "sessionID" in properties.info &&
+      typeof properties.info.sessionID === "string"
+    )
+      return properties.info.sessionID
+    if (
+      "part" in properties &&
+      properties.part &&
+      typeof properties.part === "object" &&
+      "sessionID" in properties.part &&
+      typeof properties.part.sessionID === "string"
+    )
+      return properties.part.sessionID
+  }
+
+  const apply = (event: { type: string; properties?: unknown }) => {
+    const eventID = eventSessionID(event)
+    if (eventID) {
+      touch(eventID)
+      if (!data.info[eventID]) void resolve(eventID).catch(() => {})
+    }
+    switch (event.type) {
+      case "session.created":
+        remember((event.properties as { info: Session }).info)
+        return
+      case "session.updated": {
+        const info = (event.properties as { info: Session }).info
+        remember(info)
+        if (info.time.archived) evict([info.id])
+        return
+      }
+      case "session.deleted": {
+        const sessionID = (event.properties as { info: Session }).info.id
+        infoSeen.delete(sessionID)
+        setData(
+          "info",
+          produce((draft) => void delete draft[sessionID]),
+        )
+        evict([sessionID])
+        return
+      }
+      case "session.diff": {
+        const props = event.properties as { sessionID: string; diff: SnapshotFileDiff[] }
+        setData("session_diff", props.sessionID, reconcile(cleanDiffs(props.diff), { key: "file" }))
+        return
+      }
+      case "todo.updated": {
+        const props = event.properties as { sessionID: string; todos: Todo[] }
+        setData("todo", props.sessionID, reconcile(props.todos, { key: "id" }))
+        return
+      }
+      case "session.status": {
+        const props = event.properties as { sessionID: string; status: SessionStatus }
+        setData("session_status", props.sessionID, reconcile(props.status))
+        return
+      }
+      case "message.updated": {
+        const info = cleanMessage((event.properties as { info: Message }).info)
+        const messages = data.message[info.sessionID]
+        if (!messages) {
+          setData("message", info.sessionID, [info])
+          return
+        }
+        const result = Binary.search(messages, info.id, (message) => message.id)
+        if (result.found) setData("message", info.sessionID, result.index, reconcile(info))
+        if (!result.found)
+          setData("message", info.sessionID, (value = []) => {
+            const next = value.slice()
+            next.splice(result.index, 0, info)
+            return next
+          })
+        return
+      }
+      case "message.removed": {
+        const props = event.properties as { sessionID: string; messageID: string }
+        setData(
+          produce((draft) => {
+            const messages = draft.message[props.sessionID]
+            if (messages) {
+              const result = Binary.search(messages, props.messageID, (message) => message.id)
+              if (result.found) messages.splice(result.index, 1)
+            }
+            for (const part of draft.part[props.messageID] ?? []) delete draft.part_text_accum_delta[part.id]
+            delete draft.part[props.messageID]
+          }),
+        )
+        return
+      }
+      case "message.part.updated": {
+        const part = (event.properties as { part: Part }).part
+        if (SKIP_PARTS.has(part.type)) return
+        setData(
+          "part_text_accum_delta",
+          produce((draft) => void delete draft[part.id]),
+        )
+        const parts = data.part[part.messageID]
+        if (!parts) {
+          setData("part", part.messageID, [part])
+          return
+        }
+        const result = Binary.search(parts, part.id, (item) => item.id)
+        if (result.found) setData("part", part.messageID, result.index, reconcile(part))
+        if (!result.found)
+          setData("part", part.messageID, (value = []) => {
+            const next = value.slice()
+            next.splice(result.index, 0, part)
+            return next
+          })
+        return
+      }
+      case "message.part.removed": {
+        const props = event.properties as { messageID: string; partID: string }
+        setData(
+          produce((draft) => {
+            delete draft.part_text_accum_delta[props.partID]
+            const parts = draft.part[props.messageID]
+            if (!parts) return
+            const result = Binary.search(parts, props.partID, (part) => part.id)
+            if (result.found) parts.splice(result.index, 1)
+            if (parts.length === 0) delete draft.part[props.messageID]
+          }),
+        )
+        return
+      }
+      case "message.part.delta": {
+        const props = event.properties as { messageID: string; partID: string; field: string; delta: string }
+        const parts = data.part[props.messageID]
+        if (!parts) return
+        const result = Binary.search(parts, props.partID, (part) => part.id)
+        if (!result.found) return
+        const field = props.field as keyof (typeof parts)[number]
+        const current = parts[result.index]?.[field]
+        setData(
+          "part_text_accum_delta",
+          props.partID,
+          (value) => (value ?? (typeof current === "string" ? current : "")) + props.delta,
+        )
+        setData(
+          "part",
+          props.messageID,
+          produce((draft) => {
+            if (!draft) return
+            const part = draft[result.index]
+            const field = props.field as keyof typeof part
+            ;(part[field] as string) = ((part[field] as string | undefined) ?? "") + props.delta
+          }),
+        )
+        return
+      }
+      case "permission.asked": {
+        const permission = event.properties as PermissionRequest
+        const permissions = data.permission[permission.sessionID] ?? []
+        const result = Binary.search(permissions, permission.id, (item) => item.id)
+        if (result.found) setData("permission", permission.sessionID, result.index, reconcile(permission))
+        if (!result.found)
+          setData(
+            "permission",
+            permission.sessionID,
+            produce((draft = []) => void draft.splice(result.index, 0, permission)),
+          )
+        return
+      }
+      case "permission.replied": {
+        const props = event.properties as { sessionID: string; requestID: string }
+        setData(
+          "permission",
+          props.sessionID,
+          produce((draft) => {
+            if (!draft) return
+            const result = Binary.search(draft, props.requestID, (item) => item.id)
+            if (result.found) draft.splice(result.index, 1)
+          }),
+        )
+        return
+      }
+      case "question.asked": {
+        const question = event.properties as QuestionRequest
+        const questions = data.question[question.sessionID] ?? []
+        const result = Binary.search(questions, question.id, (item) => item.id)
+        if (result.found) setData("question", question.sessionID, result.index, reconcile(question))
+        if (!result.found)
+          setData(
+            "question",
+            question.sessionID,
+            produce((draft = []) => void draft.splice(result.index, 0, question)),
+          )
+        return
+      }
+      case "question.replied":
+      case "question.rejected": {
+        const props = event.properties as { sessionID: string; requestID: string }
+        setData(
+          "question",
+          props.sessionID,
+          produce((draft) => {
+            if (!draft) return
+            const result = Binary.search(draft, props.requestID, (item) => item.id)
+            if (result.found) draft.splice(result.index, 1)
+          }),
+        )
+      }
+    }
+  }
+
+  return {
+    data,
+    set: setData,
+    get: (sessionID: string) => data.info[sessionID],
+    peek: (sessionID: string) => data.info[sessionID],
+    remember,
+    resolve,
+    lineage: {
+      peek: peekLineage,
+      async resolve(sessionID: string) {
+        const session = await resolve(sessionID)
+        return { session, root: await rootSession(session, resolve) }
+      },
+    },
+    sync,
+    prefetch,
+    shouldPrefetch(sessionID: string, limit: number) {
+      if (data.message[sessionID] === undefined) return true
+      if (Date.now() - (meta.at[sessionID] ?? 0) > 15_000) return true
+      if (meta.complete[sessionID]) return false
+      return (meta.limit[sessionID] ?? 0) <= limit
+    },
+    fresh(sessionID: string, ttl: number) {
+      return Date.now() - (meta.at[sessionID] ?? 0) <= ttl
+    },
+    optimistic: {
+      add(input: { sessionID: string; message: Message; parts: Part[] }) {
+        const items = optimistic.get(input.sessionID)
+        if (items) items.set(input.message.id, input)
+        if (!items) optimistic.set(input.sessionID, new Map([[input.message.id, input]]))
+        setData("message", input.sessionID, (messages = []) => merge(messages, [input.message]))
+        setData(
+          "part",
+          input.message.id,
+          input.parts.filter((part) => !!part?.id).sort((a, b) => cmp(a.id, b.id)),
+        )
+      },
+      remove(input: { sessionID: string; messageID: string }) {
+        clearOptimistic(input.sessionID, input.messageID)
+        setData("message", input.sessionID, (messages) => messages?.filter((message) => message.id !== input.messageID))
+        setData(
+          "part",
+          produce((draft) => void delete draft[input.messageID]),
+        )
+      },
+    },
+    diff(sessionID: string, options?: { force?: boolean }) {
+      touch(sessionID)
+      if (data.session_diff[sessionID] !== undefined && !options?.force) return Promise.resolve()
+      return runInflight(inflightDiff, sessionID, () => {
+        const generation = generations.get(sessionID) ?? 0
+        return retry(() => client.session.diff({ sessionID })).then((result) => {
+          if ((generations.get(sessionID) ?? 0) !== generation) return
+          setData("session_diff", sessionID, reconcile(cleanDiffs(result.data), { key: "file" }))
+        })
+      })
+    },
+    todo(sessionID: string, options?: { force?: boolean }) {
+      touch(sessionID)
+      if (data.todo[sessionID] !== undefined && !options?.force) return Promise.resolve()
+      return runInflight(inflightTodo, sessionID, () => {
+        const generation = generations.get(sessionID) ?? 0
+        return retry(() => client.session.todo({ sessionID })).then((result) => {
+          if ((generations.get(sessionID) ?? 0) !== generation) return
+          setData("todo", sessionID, reconcile(result.data ?? [], { key: "id" }))
+        })
+      })
+    },
+    history: {
+      more: (sessionID: string) =>
+        data.message[sessionID] !== undefined &&
+        meta.limit[sessionID] !== undefined &&
+        !meta.complete[sessionID] &&
+        !!meta.cursor[sessionID],
+      loading: (sessionID: string) => meta.loading[sessionID] ?? false,
+      async loadMore(sessionID: string, count = historyMessagePageSize) {
+        touch(sessionID)
+        if (meta.loading[sessionID] || meta.complete[sessionID] || !meta.cursor[sessionID]) return
+        await loadMessages(sessionID, count, meta.cursor[sessionID], "prepend")
+      },
+    },
+    evict(sessionID: string) {
+      if (protectedSessions().has(sessionID)) return
+      seen.delete(sessionID)
+      evict([sessionID])
+    },
+    pin(sessionID: string) {
+      pinned.set(sessionID, (pinned.get(sessionID) ?? 0) + 1)
+      touch(sessionID)
+    },
+    unpin(sessionID: string) {
+      const count = pinned.get(sessionID)
+      if (!count || count === 1) pinned.delete(sessionID)
+      if (count && count > 1) pinned.set(sessionID, count - 1)
+    },
+    apply,
+  }
+}
+
+export type ServerSession = ReturnType<typeof createServerSession>
@@ -1,4 +1,4 @@
-import type { Config, OpencodeClient, Path, Project, ProviderAuthResponse, Todo } from "@opencode-ai/sdk/v2/client"
+import type { Config, OpencodeClient, Path, Project, ProviderAuthResponse } from "@opencode-ai/sdk/v2/client"
 import { showToast } from "@/utils/toast"
 import { getFilename } from "@opencode-ai/core/util/path"
 import { type Accessor, batch, createMemo, getOwner, onCleanup, onMount, untrack } from "solid-js"
@@ -17,8 +17,7 @@ import {
  loadProvidersQuery,
 } from "./global-sync/bootstrap"
 import { createChildStoreManager } from "./global-sync/child-store"
-import { applyDirectoryEvent, applyGlobalEvent, cleanupDroppedSessionCaches } from "./global-sync/event-reducer"
-import { clearSessionPrefetchDirectory } from "./global-sync/session-prefetch"
+import { applyDirectoryEvent, applyGlobalEvent } from "./global-sync/event-reducer"
 import { estimateRootSessionTotal, loadRootSessionsWithFallback } from "./global-sync/session-load"
 import { trimSessions } from "./global-sync/session-trim"
 import type { ProjectMeta } from "./global-sync/types"
@@ -29,7 +28,8 @@ import { createRefreshQueue } from "./global-sync/queue"
 import { directoryKey } from "./global-sync/utils"
 import { PathKey } from "@/utils/path-key"
 import { createDirSyncContext } from "./directory-sync"
-import { createSimpleContext, NormalizedProviderListResponse } from "@opencode-ai/ui/context"
+import { createSimpleContext } from "@opencode-ai/ui/context"
+import { NormalizedProviderListResponse } from "@opencode-ai/session-ui/context"
 import { createRefCountMap } from "@/utils/refcount"
 import { useGlobal } from "./global"
 import { ServerConnection, useServer } from "./server"
@@ -37,15 +37,13 @@ import { retry } from "@opencode-ai/core/util/retry"
 import type { ServerScope } from "@/utils/server-scope"
 import { persisted } from "@/utils/persist"
 import { toggleMcp } from "./global-sync/mcp"
+import { createServerSession } from "./server-session"

 type GlobalStore = {
  ready: boolean
  error?: InitError
  path: Path
  project: Project[]
-  session_todo: {
-    [sessionID: string]: Todo[]
-  }
  provider: NormalizedProviderListResponse
  provider_auth: ProviderAuthResponse
  config: Config
@@ -117,7 +115,6 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
      return !bootstrap.isPending
    },
    project: [],
-    session_todo: {},
    provider_auth: {},
    get path() {
      const EMPTY = { state: "", config: "", worktree: "", directory: "", home: "" }
@@ -187,20 +184,6 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
    return (setGlobalStore as (...args: unknown[]) => unknown)(...input)
  }) as typeof setGlobalStore

-  const setSessionTodo = (sessionID: string, todos: Todo[] | undefined) => {
-    if (!sessionID) return
-    if (!todos) {
-      setGlobalStore(
-        "session_todo",
-        produce((draft) => {
-          delete draft[sessionID]
-        }),
-      )
-      return
-    }
-    setGlobalStore("session_todo", sessionID, reconcile(todos, { key: "id" }))
-  }
-
  const paused = () => untrack(() => globalStore.reload) !== undefined

  const queue = createRefreshQueue({
@@ -210,6 +193,8 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
    bootstrapInstance,
  })

+  const session = createServerSession(serverSDK.client)
+
  const children = createChildStoreManager({
    owner,
    scope: serverSDK.scope,
@@ -238,7 +223,6 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
      sessionMeta.delete(key)
      sdkCache.delete(key)
      clearProviderRev(serverSDK.scope, key)
-      clearSessionPrefetchDirectory(serverSDK.scope, key)
    },
    translate: language.t,
    queryOptions: queryOptionsApi,
@@ -262,11 +246,10 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
    if (meta && meta.limit >= retainedLimit) {
      const next = trimSessions(store.session, {
        limit: retainedLimit,
-        permission: store.permission,
+        permission: session.data.permission,
      })
      if (next.length !== store.session.length) {
        setStore("session", reconcile(next, { key: "id" }))
-        cleanupDroppedSessionCaches(store, setStore, next, setSessionTodo)
      }
      children.unpin(key)
      return
@@ -289,11 +272,12 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
                .sort((a, b) => (a.id < b.id ? -1 : a.id > b.id ? 1 : 0))
              const limit = Math.max(store.limit, options?.limit ?? 0, sessionMeta.get(key)?.limit ?? 0)
              const childSessions = store.session.filter((s) => !!s.parentID)
-              const sessions = trimSessions([...nonArchived, ...childSessions], {
+              const next = trimSessions([...nonArchived, ...childSessions], {
                limit,
-                permission: store.permission,
+                permission: session.data.permission,
              })
              batch(() => {
+                next.forEach(session.remember)
                setStore(
                  "sessionTotal",
                  estimateRootSessionTotal({
@@ -302,8 +286,7 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
                    limited: x.limited,
                  }),
                )
-                setStore("session", reconcile(sessions, { key: "id" }))
-                cleanupDroppedSessionCaches(store, setStore, sessions, setSessionTodo)
+                setStore("session", reconcile(next, { key: "id" }))
              })
              sessionMeta.set(key, { limit })
            })
@@ -357,6 +340,7 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
        loadSessions,
        translate: language.t,
        queryClient,
+        session,
      })
    })

@@ -374,6 +358,8 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
    const event = e.details
    const recent = bootingRoot || Date.now() - bootedAt < 1500

+    session.apply(event)
+
    if (directory === "global") {
      applyGlobalEvent({
        event,
@@ -403,8 +389,9 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
      store,
      setStore,
      push: queue.push,
-      setSessionTodo,
      retainedLimit: sessionMeta.get(key)?.limit,
+      sessionContent: false,
+      permission: session.data.permission,
      vcsCache: children.vcsCache.get(key),
      loadLsp: () => {
        void queryClient.fetchQuery(queryOptionsApi.lsp(key))
@@ -478,9 +465,7 @@ export function createServerSyncContextInner(serverSDK: ServerSDK) {
    // bootstrap,
    updateConfig: updateConfigMutation.mutateAsync,
    project: projectApi,
-    todo: {
-      set: setSessionTodo,
-    },
+    session,
    mcp: {
      toggle: async (directory: string, name: string) => {
        const key = directoryKey(directory)
@@ -31,7 +31,6 @@ export interface Settings {
    showReasoningSummaries: boolean
    shellToolPartsExpanded: boolean
    editToolPartsExpanded: boolean
-    showSessionProgressBar: boolean
    showCustomAgents: boolean
    mobileTitlebarPosition: "top" | "bottom"
    newLayoutDesigns?: boolean
@@ -117,7 +116,6 @@ const defaultSettings: Settings = {
    showReasoningSummaries: false,
    shellToolPartsExpanded: false,
    editToolPartsExpanded: false,
-    showSessionProgressBar: true,
    showCustomAgents: false,
    mobileTitlebarPosition: "top",
  },
@@ -239,13 +237,6 @@ export const { use: useSettings, provider: SettingsProvider } = createSimpleCont
        setEditToolPartsExpanded(value: boolean) {
          setStore("general", "editToolPartsExpanded", value)
        },
-        showSessionProgressBar: withFallback(
-          () => store.general?.showSessionProgressBar,
-          defaultSettings.general.showSessionProgressBar,
-        ),
-        setShowSessionProgressBar(value: boolean) {
-          setStore("general", "showSessionProgressBar", value)
-        },
        showCustomAgents,
        setShowCustomAgents(value: boolean) {
          setStore("general", "showCustomAgents", value)
@@ -590,8 +590,6 @@ export const dict = {
  "settings.general.row.editToolPartsExpanded.title": "توسيع أجزاء أداة edit",
  "settings.general.row.editToolPartsExpanded.description":
    "إظهار أجزاء أدوات edit و write و patch موسعة بشكل افتراضي في الشريط الزمني",
-  "settings.general.row.showSessionProgressBar.title": "إظهار شريط تقدم الجلسة",
-  "settings.general.row.showSessionProgressBar.description": "عرض شريط التقدم المتحرك أعلى الجلسة أثناء عمل الوكيل",
  "settings.general.row.wayland.title": "استخدام Wayland الأصلي",
  "settings.general.row.wayland.description": "تعطيل التراجع إلى X11 على Wayland. يتطلب إعادة التشغيل.",
  "settings.general.row.wayland.tooltip":
@@ -598,9 +598,6 @@ export const dict = {
  "settings.general.row.editToolPartsExpanded.title": "Expandir partes da ferramenta de edição",
  "settings.general.row.editToolPartsExpanded.description":
    "Mostrar partes das ferramentas de edição, escrita e patch expandidas por padrão na linha do tempo",
-  "settings.general.row.showSessionProgressBar.title": "Mostrar barra de progresso da sessão",
-  "settings.general.row.showSessionProgressBar.description":
-    "Exibir a barra de progresso animada no topo da sessão quando o agente estiver trabalhando",
  "settings.general.row.wayland.title": "Usar Wayland nativo",
  "settings.general.row.wayland.description": "Desabilitar fallback X11 no Wayland. Requer reinicialização.",
  "settings.general.row.wayland.tooltip":
@@ -663,9 +663,6 @@ export const dict = {
  "settings.general.row.editToolPartsExpanded.title": "Proširi dijelove alata za uređivanje",
  "settings.general.row.editToolPartsExpanded.description":
    "Prikaži dijelove alata za uređivanje, pisanje i patch podrazumijevano proširene na vremenskoj traci",
-  "settings.general.row.showSessionProgressBar.title": "Prikaži traku napretka sesije",
-  "settings.general.row.showSessionProgressBar.description":
-    "Prikaži animiranu traku napretka na vrhu sesije kada agent radi",
  "settings.general.row.wayland.title": "Koristi nativni Wayland",
  "settings.general.row.wayland.description": "Onemogući X11 fallback na Waylandu. Zahtijeva restart.",
  "settings.general.row.wayland.tooltip":
@@ -657,9 +657,6 @@ export const dict = {
  "settings.general.row.editToolPartsExpanded.title": "Udvid edit-værktøjsdele",
  "settings.general.row.editToolPartsExpanded.description":
    "Vis edit-, write- og patch-værktøjsdele udvidet som standard i tidslinjen",
-  "settings.general.row.showSessionProgressBar.title": "Vis sessionens fremdriftslinje",
-  "settings.general.row.showSessionProgressBar.description":
-    "Vis den animerede fremdriftslinje øverst i sessionen, når agenten arbejder",
  "settings.general.row.wayland.title": "Brug native Wayland",
  "settings.general.row.wayland.description": "Deaktiver X11-fallback på Wayland. Kræver genstart.",
  "settings.general.row.wayland.tooltip":
@@ -609,9 +609,6 @@ export const dict = {
  "settings.general.row.editToolPartsExpanded.title": "Edit-Tool-Abschnitte ausklappen",
  "settings.general.row.editToolPartsExpanded.description":
    "Edit-, Write- und Patch-Tool-Abschnitte standardmäßig in der Timeline ausgeklappt anzeigen",
-  "settings.general.row.showSessionProgressBar.title": "Sitzungsfortschrittsleiste anzeigen",
-  "settings.general.row.showSessionProgressBar.description":
-    "Die animierte Fortschrittsleiste oben in der Sitzung anzeigen, wenn der Agent arbeitet",
  "settings.general.row.wayland.title": "Natives Wayland verwenden",
  "settings.general.row.wayland.description": "X11-Fallback unter Wayland deaktivieren. Erfordert Neustart.",
  "settings.general.row.wayland.tooltip":
@@ -854,9 +854,6 @@ export const dict = {
  "settings.general.row.editToolPartsExpanded.title": "Expand edit tool parts",
  "settings.general.row.editToolPartsExpanded.description":
    "Show edit, write, and patch tool parts expanded by default in the timeline",
-  "settings.general.row.showSessionProgressBar.title": "Show session progress bar",
-  "settings.general.row.showSessionProgressBar.description":
-    "Display the animated progress bar at the top of the session when the agent is working",
  "settings.general.row.newLayoutDesigns.title": "New layout and designs",
  "settings.general.row.newLayoutDesigns.description": "Enable the redesigned layout, home, composer, and session UI",
  "settings.general.row.pinchZoom.title": "Pinch to zoom",
@@ -667,9 +667,6 @@ export const dict = {
  "settings.general.row.editToolPartsExpanded.title": "Expandir partes de la herramienta de edición",
  "settings.general.row.editToolPartsExpanded.description":
    "Mostrar las partes de las herramientas de edición, escritura y parcheado expandidas por defecto en la línea de tiempo",
-  "settings.general.row.showSessionProgressBar.title": "Mostrar barra de progreso de la sesión",
-  "settings.general.row.showSessionProgressBar.description":
-    "Mostrar la barra de progreso animada en la parte superior de la sesión cuando el agente esté trabajando",
  "settings.general.row.wayland.title": "Usar Wayland nativo",
  "settings.general.row.wayland.description": "Deshabilitar fallback a X11 en Wayland. Requiere reinicio.",
  "settings.general.row.wayland.tooltip":
@@ -606,9 +606,6 @@ export const dict = {
  "settings.general.row.editToolPartsExpanded.title": "Développer les parties de l'outil edit",
  "settings.general.row.editToolPartsExpanded.description":
    "Afficher les parties des outils edit, write et patch développées par défaut dans la chronologie",
-  "settings.general.row.showSessionProgressBar.title": "Afficher la barre de progression de la session",
-  "settings.general.row.showSessionProgressBar.description":
-    "Afficher la barre de progression animée en haut de la session lorsque l'agent travaille",
  "settings.general.row.wayland.title": "Utiliser Wayland natif",
  "settings.general.row.wayland.description": "Désactiver le repli X11 sur Wayland. Nécessite un redémarrage.",
  "settings.general.row.wayland.tooltip":
@@ -595,9 +595,6 @@ export const dict = {
  "settings.general.row.editToolPartsExpanded.title": "edit ツールパーツを展開",
  "settings.general.row.editToolPartsExpanded.description":
    "タイムラインで edit、write、patch ツールパーツをデフォルトで展開して表示します",
-  "settings.general.row.showSessionProgressBar.title": "セッション進行状況バーを表示",
-  "settings.general.row.showSessionProgressBar.description":
-    "エージェントの作業中に、セッション上部にアニメーション付きの進行状況バーを表示します",
  "settings.general.row.wayland.title": "ネイティブWaylandを使用",
  "settings.general.row.wayland.description": "WaylandでのX11フォールバックを無効にします。再起動が必要です。",
  "settings.general.row.wayland.tooltip":
@@ -591,9 +591,6 @@ export const dict = {
  "settings.general.row.editToolPartsExpanded.title": "edit 도구 파트 펼치기",
  "settings.general.row.editToolPartsExpanded.description":
    "타임라인에서 기본적으로 edit, write, patch 도구 파트를 펼친 상태로 표시합니다",
-  "settings.general.row.showSessionProgressBar.title": "세션 진행 표시줄 표시",
-  "settings.general.row.showSessionProgressBar.description":
-    "에이전트가 작업 중일 때 세션 상단에 애니메이션 진행 표시줄을 표시합니다",
  "settings.general.row.wayland.title": "네이티브 Wayland 사용",
  "settings.general.row.wayland.description": "Wayland에서 X11 폴백을 비활성화합니다. 다시 시작해야 합니다.",
  "settings.general.row.wayland.tooltip":
@@ -664,9 +664,6 @@ export const dict = {
  "settings.general.row.editToolPartsExpanded.title": "Utvid edit-verktøydeler",
  "settings.general.row.editToolPartsExpanded.description":
    "Vis edit-, write- og patch-verktøydeler utvidet som standard i tidslinjen",
-  "settings.general.row.showSessionProgressBar.title": "Vis fremdriftslinje for sesjonen",
-  "settings.general.row.showSessionProgressBar.description":
-    "Vis den animerte fremdriftslinjen øverst i sesjonen når agenten jobber",
  "settings.general.row.wayland.title": "Bruk innebygd Wayland",
  "settings.general.row.wayland.description": "Deaktiver X11-fallback på Wayland. Krever omstart.",
  "settings.general.row.wayland.tooltip":
@@ -596,9 +596,6 @@ export const dict = {
  "settings.general.row.editToolPartsExpanded.title": "Rozwijaj elementy narzędzia edit",
  "settings.general.row.editToolPartsExpanded.description":
    "Domyślnie pokazuj rozwinięte elementy narzędzi edit, write i patch na osi czasu",
-  "settings.general.row.showSessionProgressBar.title": "Pokazuj pasek postępu sesji",
-  "settings.general.row.showSessionProgressBar.description":
-    "Wyświetlaj animowany pasek postępu u góry sesji, gdy agent pracuje",
  "settings.general.row.wayland.title": "Użyj natywnego Wayland",
  "settings.general.row.wayland.description": "Wyłącz fallback X11 na Wayland. Wymaga restartu.",
  "settings.general.row.wayland.tooltip":
@@ -664,9 +664,6 @@ export const dict = {
  "settings.general.row.editToolPartsExpanded.title": "Разворачивать элементы инструмента edit",
  "settings.general.row.editToolPartsExpanded.description":
    "Показывать элементы инструментов edit, write и patch в ленте развернутыми по умолчанию",
-  "settings.general.row.showSessionProgressBar.title": "Показывать индикатор прогресса сессии",
-  "settings.general.row.showSessionProgressBar.description":
-    "Показывать анимированный индикатор прогресса вверху сессии, когда агент работает",
  "settings.general.row.wayland.title": "Использовать нативный Wayland",
  "settings.general.row.wayland.description": "Отключить X11 fallback на Wayland. Требуется перезапуск.",
  "settings.general.row.wayland.tooltip":
@@ -655,9 +655,6 @@ export const dict = {
  "settings.general.row.editToolPartsExpanded.title": "ขยายส่วนเครื่องมือ edit",
  "settings.general.row.editToolPartsExpanded.description":
    "แสดงส่วนเครื่องมือ edit, write และ patch แบบขยายตามค่าเริ่มต้นในไทม์ไลน์",
-  "settings.general.row.showSessionProgressBar.title": "แสดงแถบความคืบหน้าของเซสชัน",
-  "settings.general.row.showSessionProgressBar.description":
-    "แสดงแถบความคืบหน้าแบบเคลื่อนไหวที่ด้านบนของเซสชันเมื่อเอเจนต์กำลังทำงาน",
  "settings.general.row.wayland.title": "ใช้ Wayland แบบเนทีฟ",
  "settings.general.row.wayland.description": "ปิดใช้งาน X11 fallback บน Wayland ต้องรีสตาร์ท",
  "settings.general.row.wayland.tooltip": "บน Linux ที่มีจอภาพรีเฟรชเรตแบบผสม Wayland แบบเนทีฟอาจเสถียรกว่า",
@@ -671,10 +671,6 @@ export const dict = {
  "settings.general.row.editToolPartsExpanded.description":
    "Zaman çizelgesinde düzenleme, yazma ve yama araç bileşenlerini varsayılan olarak genişletilmiş göster",

-  "settings.general.row.showSessionProgressBar.title": "Oturum ilerleme çubuğunu göster",
-  "settings.general.row.showSessionProgressBar.description":
-    "Ajan çalışırken oturumun üst kısmında animasyonlu ilerleme çubuğunu göster",
-
  "settings.general.row.wayland.title": "Yerel Wayland kullan",
  "settings.general.row.wayland.description":
    "Wayland'da X11 geri dönüşünü devre dışı bırak. Yeniden başlatma gerektirir.",
@@ -781,9 +781,6 @@ export const dict = {
  "settings.general.row.editToolPartsExpanded.title": "Розгортати частини інструменту редагування",
  "settings.general.row.editToolPartsExpanded.description":
    "Показувати частини інструментів редагування, запису та патчів розгорнутими за замовчуванням на часовій шкалі",
-  "settings.general.row.showSessionProgressBar.title": "Показувати індикатор прогресу сесії",
-  "settings.general.row.showSessionProgressBar.description":
-    "Відображати анімований індикатор прогресу вгорі сесії, коли агент працює",

  "settings.general.row.wayland.title": "Використовувати нативний Wayland",
  "settings.general.row.wayland.description": "Вимкнути резервний X11 на Wayland. Потребує перезапуску.",
@@ -664,8 +664,6 @@ export const dict = {
  "settings.general.row.shellToolPartsExpanded.description": "默认在时间线中展开 shell 工具部分",
  "settings.general.row.editToolPartsExpanded.title": "展开编辑工具部分",
  "settings.general.row.editToolPartsExpanded.description": "默认在时间线中展开 edit、write 和 patch 工具部分",
-  "settings.general.row.showSessionProgressBar.title": "显示会话进度条",
-  "settings.general.row.showSessionProgressBar.description": "当智能体正在工作时，在会话顶部显示动画进度条",
  "settings.general.row.wayland.title": "使用原生 Wayland",
  "settings.general.row.wayland.description": "在 Wayland 上禁用 X11 回退。需要重启。",
  "settings.general.row.wayland.tooltip": "在混合刷新率显示器的 Linux 系统上，原生 Wayland 可能更稳定。",
@@ -650,8 +650,6 @@ export const dict = {
  "settings.general.row.shellToolPartsExpanded.description": "在時間軸中預設展開 shell 工具區塊",
  "settings.general.row.editToolPartsExpanded.title": "展開 edit 工具區塊",
  "settings.general.row.editToolPartsExpanded.description": "在時間軸中預設展開 edit、write 和 patch 工具區塊",
-  "settings.general.row.showSessionProgressBar.title": "顯示工作階段進度列",
-  "settings.general.row.showSessionProgressBar.description": "當代理程式正在運作時，在工作階段頂部顯示動畫進度列",
  "settings.general.row.wayland.title": "使用原生 Wayland",
  "settings.general.row.wayland.description": "在 Wayland 上停用 X11 後備模式。需要重新啟動。",
  "settings.general.row.wayland.tooltip": "在混合更新率螢幕的 Linux 系統上，原生 Wayland 可能更穩定。",
@@ -1,4 +1,5 @@
@import "@opencode-ai/ui/styles/tailwind";
+@import "@opencode-ai/session-ui/styles";
@import "@opencode-ai/ui/v2/styles/tailwind.css";

@font-face {
@@ -23,44 +24,6 @@
 }

@layer components {
-  @keyframes session-progress-whip {
-    0% {
-      clip-path: inset(0 100% 0 0 round 999px);
-      animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1);
-    }
-
-    48% {
-      clip-path: inset(0 0 0 0 round 999px);
-      animation-timing-function: cubic-bezier(0.65, 0, 0.35, 1);
-    }
-
-    100% {
-      clip-path: inset(0 0 0 100% round 999px);
-    }
-  }
-
-  [data-component="session-progress"] {
-    position: absolute;
-    inset: 0 0 auto;
-    height: 2px;
-    overflow: hidden;
-    pointer-events: none;
-    opacity: 1;
-    transition: opacity 220ms ease-out;
-  }
-
-  [data-component="session-progress"][data-state="hiding"] {
-    opacity: 0;
-  }
-
-  [data-component="session-progress-bar"] {
-    width: 100%;
-    height: 100%;
-    border-radius: 999px;
-    clip-path: inset(0 100% 0 0 round 999px);
-    will-change: clip-path;
-  }
-
  [data-component="getting-started"] {
    container-type: inline-size;
    container-name: getting-started;
@@ -1,8 +1,8 @@
-import { DataProvider } from "@opencode-ai/ui/context"
+import { DataProvider } from "@opencode-ai/session-ui/context"
 import { showToast } from "@/utils/toast"
 import { base64Encode } from "@opencode-ai/core/util/encode"
 import { useLocation, useNavigate, useParams } from "@solidjs/router"
-import { type Accessor, createEffect, createMemo, createResource, type ParentProps, Show } from "solid-js"
+import { type Accessor, createEffect, createMemo, createResource, onCleanup, type ParentProps, Show } from "solid-js"
 import { useLanguage } from "@/context/language"
 import { LocalProvider } from "@/context/local"
 import { SDKProvider } from "@/context/sdk"
@@ -11,7 +11,7 @@ import { decode64 } from "@/utils/base64"
 import { Schema } from "effect"
 import type { ServerConnection } from "@/context/server"
 import { sessionHref } from "@/utils/session-route"
-import { useGlobal } from "@/context/global"
+import { useServerSync } from "@/context/server-sync"

 export function DirectoryDataProvider(
  props: ParentProps<{
@@ -24,7 +24,7 @@ export function DirectoryDataProvider(
  const navigate = useNavigate()
  const params = useParams()
  const sync = useSync()
-  const global = useGlobal()
+  const serverSync = useServerSync()
  const directory = () => (typeof props.directory === "function" ? props.directory() : props.directory)
  const slug = createMemo(() => base64Encode(directory()))
  const href = (sessionID: string) => {
@@ -50,15 +50,18 @@ export function DirectoryDataProvider(
        .catch(() => {}),
  )

+  createEffect(() => {
+    const sessionID = params.id
+    if (!sessionID) return
+    serverSync().session.pin(sessionID)
+    onCleanup(() => serverSync().session.unpin(sessionID))
+  })
+
  return (
    <DataProvider
      data={sync().data}
      directory={directory()}
-      onNavigateToSession={(sessionID: string) => {
-        const server = props.server?.()
-        if (server && params.id) global.sessionPlacement.inherit(server, params.id, sessionID)
-        navigate(href(sessionID))
-      }}
+      onNavigateToSession={(sessionID: string) => navigate(href(sessionID))}
      onSessionHref={href}
    >
      <LocalProvider>{props.children}</LocalProvider>
@@ -60,7 +60,7 @@ import { ServerHealthIndicator } from "@/components/server/server-row"
 import { type ServerHealth } from "@/utils/server-health"
 import { Persist, persisted } from "@/utils/persist"
 import { useMarked } from "@opencode-ai/ui/context/marked"
-import { preloadMarkdown } from "@opencode-ai/ui/markdown-cache"
+import { preloadMarkdown } from "@opencode-ai/session-ui/markdown-cache"

 const HOME_SESSION_LIMIT = 64
 const HOME_ROW_LAYOUT =
@@ -220,10 +220,9 @@ export function NewHome() {
            void directory.session
              .sync(record.session.id)
              .then(() => {
-                const store = ctx.sync.child(record.session.directory)[0]
                return Promise.all(
-                  (store.message[record.session.id] ?? []).flatMap((message) =>
-                    (store.part[message.id] ?? []).flatMap((part) => {
+                  (ctx.sync.session.data.message[record.session.id] ?? []).flatMap((message) =>
+                    (ctx.sync.session.data.part[message.id] ?? []).flatMap((part) => {
                      if (part.type !== "text" || !part.text) return []
                      return preloadMarkdown(part.text, part.id, marked)
                    }),
@@ -343,12 +342,6 @@ export function NewHome() {
    if (!conn) return
    const directory = project?.worktree ?? session.directory
    const ctx = global.ensureServerCtx(conn)
-    global.sessionPlacement.set({
-      server: ServerConnection.key(conn),
-      leafID: session.id,
-      rootID: session.id,
-      directory: session.directory,
-    })
    ctx.projects.open(directory)
    ctx.projects.touch(directory)
    startTransition(() => {
@@ -18,6 +18,7 @@ export default function NewLayout(props: ParentProps) {
  createEffect(() => setV2Toast(true))
  createEffect(() => {
    if (!notification.ready() || !params.id) return
+    if (notification.session.unseenCount(params.id) === 0) return
    notification.session.markViewed(params.id)
  })

@@ -1,5 +1,4 @@
 import {
-  batch,
  createEffect,
  createMemo,
  createResource,
@@ -26,7 +25,7 @@ import { Tooltip } from "@opencode-ai/ui/tooltip"
 import { DropdownMenu } from "@opencode-ai/ui/dropdown-menu"
 import { Dialog } from "@opencode-ai/ui/dialog"
 import { getFilename } from "@opencode-ai/core/util/path"
-import { Session, type Message } from "@opencode-ai/sdk/v2/client"
+import { Session } from "@opencode-ai/sdk/v2/client"
 import { usePlatform } from "@/context/platform"
 import { useSettings } from "@/context/settings"
 import { createStore, produce, reconcile } from "solid-js/store"
@@ -37,16 +36,7 @@ import { toaster } from "@opencode-ai/ui/toast"
 import { setV2Toast, showToast, ToastRegion } from "@/utils/toast"
 import { useServerSDK } from "@/context/server-sdk"
 import { clearWorkspaceTerminals } from "@/context/terminal"
-import { dropSessionCaches, pickSessionCacheEvictions } from "@/context/global-sync/session-cache"
-import {
-  clearSessionPrefetchInflight,
-  clearSessionPrefetch,
-  getSessionPrefetch,
-  isSessionPrefetchCurrent,
-  runSessionPrefetch,
-  setSessionPrefetch,
-  shouldSkipSessionPrefetch,
-} from "@/context/global-sync/session-prefetch"
+import { pickSessionCacheEvictions } from "@/context/global-sync/session-cache"
 import { useNotification } from "@/context/notification"
 import { usePermission } from "@/context/permission"
 import { Binary } from "@opencode-ai/core/util/binary"
@@ -684,7 +674,6 @@ export default function LegacyLayout(props: ParentProps) {
    serverSDK().url

    prefetchToken.value += 1
-    clearSessionPrefetchInflight(serverSDK().scope)
    prefetchQueues.clear()
  })

@@ -712,88 +701,12 @@ export default function LegacyLayout(props: ParentProps) {
    return created
  }

-  const mergeByID = <T extends { id: string }>(current: T[], incoming: T[]) => {
-    if (current.length === 0) {
-      return incoming.slice().sort((a, b) => (a.id < b.id ? -1 : a.id > b.id ? 1 : 0))
-    }
-
-    const map = new Map<string, T>()
-    for (const item of current) {
-      map.set(item.id, item)
-    }
-    for (const item of incoming) {
-      map.set(item.id, item)
-    }
-    return [...map.values()].sort((a, b) => (a.id < b.id ? -1 : a.id > b.id ? 1 : 0))
-  }
-
  async function prefetchMessages(directory: string, sessionID: string, token: number) {
-    const [store, setStore] = serverSync().child(directory, { bootstrap: false })
-
-    return runSessionPrefetch({
-      scope: serverSDK().scope,
-      directory,
-      sessionID,
-      task: (rev) =>
-        retry(() => serverSDK().client.session.messages({ directory, sessionID, limit: prefetchChunk }))
-          .then((messages) => {
-            if (prefetchToken.value !== token) return
-            if (!isSessionPrefetchCurrent(serverSDK().scope, directory, sessionID, rev)) return
-
-            const items = (messages.data ?? []).filter((x) => !!x?.info?.id)
-            const next = items.map((x) => x.info).filter((m): m is Message => !!m?.id)
-            const sorted = mergeByID([], next)
-            const stale = markPrefetched(directory, sessionID)
-            const cursor = messages.response.headers.get("x-next-cursor") ?? undefined
-            const meta = {
-              limit: sorted.length,
-              cursor,
-              complete: !cursor,
-              at: Date.now(),
-            }
-
-            if (stale.length > 0) {
-              clearSessionPrefetch(serverSDK().scope, directory, stale)
-              for (const id of stale) {
-                serverSync().todo.set(id, undefined)
-              }
-            }
-
-            const current = store.message[sessionID] ?? []
-            const merged = mergeByID(
-              current.filter((item): item is Message => !!item?.id),
-              sorted,
-            )
-
-            if (!isSessionPrefetchCurrent(serverSDK().scope, directory, sessionID, rev)) return
-
-            batch(() => {
-              if (stale.length > 0) {
-                setStore(
-                  produce((draft) => {
-                    dropSessionCaches(draft, stale)
-                  }),
-                )
-              }
-
-              setStore("message", sessionID, reconcile(merged, { key: "id" }))
-              setSessionPrefetch({ scope: serverSDK().scope, directory, sessionID, ...meta })
-
-              for (const message of items) {
-                const currentParts = store.part[message.info.id] ?? []
-                const mergedParts = mergeByID(
-                  currentParts.filter((item): item is (typeof currentParts)[number] & { id: string } => !!item?.id),
-                  message.parts.filter((item): item is (typeof message.parts)[number] & { id: string } => !!item?.id),
-                )
-
-                setStore("part", message.info.id, reconcile(mergedParts, { key: "id" }))
-              }
-            })
-
-            return meta
-          })
-          .catch(() => undefined),
-    })
+    await serverSync()
+      .session.prefetch(sessionID, prefetchChunk)
+      .catch(() => {})
+    if (prefetchToken.value !== token) return
+    for (const stale of markPrefetched(directory, sessionID)) serverSync().session.evict(stale)
  }

  const pumpPrefetch = (directory: string) => {
@@ -820,15 +733,7 @@ export default function LegacyLayout(props: ParentProps) {
    const directory = session.directory
    if (!directory) return

-    const [store] = serverSync().child(directory, { bootstrap: false })
-    const cached = untrack(() => {
-      const info = getSessionPrefetch(serverSDK().scope, directory, session.id)
-      return shouldSkipSessionPrefetch({
-        message: store.message[session.id] !== undefined,
-        info,
-        chunk: prefetchChunk,
-      })
-    })
+    const cached = untrack(() => !serverSync().session.shouldPrefetch(session.id, prefetchChunk))
    if (cached) return

    const q = queueFor(directory)
@@ -15,7 +15,7 @@ export function useSessionTabAvatarState(
  const hasPermissions = createMemo(() => {
    if (!active()) return false
    const [store] = globalSync().child(directory(), { bootstrap: false })
-    return !!sessionPermissionRequest(store.session, store.permission, sessionId(), (item) => {
+    return !!sessionPermissionRequest(store.session, globalSync().session.data.permission, sessionId(), (item) => {
      return !permission.autoResponds(item, directory())
    })
  })
@@ -23,8 +23,7 @@ export function useSessionTabAvatarState(
  const loading = createMemo(() => {
    if (!active()) return false
    if (hasPermissions()) return false
-    const [store] = globalSync().child(directory(), { bootstrap: false })
-    return store.session_working(sessionId())
+    return globalSync().session.data.session_working(sessionId())
  })
  return { unread, loading }
 }
@@ -3,7 +3,7 @@ import { getProjectAvatarVariant } from "@/context/layout"
 import { displayName, getProjectAvatarSource } from "@/pages/layout/helpers"
 import { useSessionTabAvatarState } from "@/pages/layout/project-avatar-state"
 import { ProjectAvatar } from "@opencode-ai/ui/v2/project-avatar-v2"
-import { SessionProgressIndicatorV2 } from "@opencode-ai/ui/v2/session-progress-indicator-v2"
+import { SessionProgressIndicatorV2 } from "@opencode-ai/session-ui/v2/session-progress-indicator-v2"
 import { Show } from "solid-js"

 export function SessionTabAvatar(props: {
@@ -33,8 +33,10 @@ export const ProjectIcon = (props: {
  const hasError = createMemo(() => dirs().some((directory) => notification.project.unseenHasError(directory)))
  const hasPermissions = createMemo(() =>
    dirs().some((directory) => {
-      const [store] = serverSync().child(directory, { bootstrap: false })
-      return hasProjectPermissions(store.permission, (item) => !permission.autoResponds(item, directory))
+      return hasProjectPermissions(serverSync().session.data.permission, (item) => {
+        if (serverSync().session.get(item.sessionID)?.directory !== directory) return false
+        return !permission.autoResponds(item, directory)
+      })
    }),
  )
  const notify = createMemo(() => props.notify && (hasPermissions() || unseenCount() > 0))
@@ -151,16 +153,23 @@ export const SessionItem = (props: SessionItemProps): JSX.Element => {
  const hasError = createMemo(() => notification.session.unseenHasError(props.session.id))
  const [sessionStore] = serverSync().child(props.session.directory)
  const hasPermissions = createMemo(() => {
-    return !!sessionPermissionRequest(sessionStore.session, sessionStore.permission, props.session.id, (item) => {
-      return !permission.autoResponds(item, props.session.directory)
-    })
+    return !!sessionPermissionRequest(
+      sessionStore.session,
+      serverSync().session.data.permission,
+      props.session.id,
+      (item) => {
+        return !permission.autoResponds(item, props.session.directory)
+      },
+    )
  })
  const isWorking = createMemo(() => {
    if (hasPermissions()) return false
-    return sessionStore.session_working(props.session.id)
+    return serverSync().session.data.session_working(props.session.id)
  })

-  const tint = createMemo(() => messageAgentColor(sessionStore.message[props.session.id], sessionStore.agent))
+  const tint = createMemo(() =>
+    messageAgentColor(serverSync().session.data.message[props.session.id], sessionStore.agent),
+  )
  const tooltip = createMemo(() => props.showTooltip ?? (props.mobile || !props.sidebarExpanded()))
  const currentChild = createMemo(() => {
    if (!props.showChild) return
@@ -304,8 +304,10 @@ export const SortableProject = (props: {
  const projectStore = createMemo(() => serverSync().child(props.project.worktree, { bootstrap: false })[0])
  const isWorking = createMemo(() =>
    dirs().some((directory) => {
-      const [store] = serverSync().child(directory, { bootstrap: false })
-      return Object.keys(store.session_status).some((id) => store.session_working(id))
+      return Object.keys(serverSync().session.data.session_status).some((id) => {
+        if (serverSync().session.get(id)?.directory !== directory) return false
+        return serverSync().session.data.session_working(id)
+      })
    }),
  )
  const projectSessions = createMemo(() => sortedRootSessions(projectStore(), props.sortNow()))
@@ -25,7 +25,7 @@ import { ResizeHandle } from "@opencode-ai/ui/resize-handle"
 import { Select } from "@opencode-ai/ui/select"
 import { Tabs } from "@opencode-ai/ui/tabs"
 import { createAutoScroll } from "@opencode-ai/ui/hooks"
-import { previewSelectedLines } from "@opencode-ai/ui/pierre/selection-bridge"
+import { previewSelectedLines } from "@opencode-ai/session-ui/pierre/selection-bridge"
 import { Button } from "@opencode-ai/ui/button"
 import { showToast } from "@/utils/toast"
 import { base64Encode, checksum } from "@opencode-ai/core/util/encode"
@@ -516,9 +516,7 @@ export default function Page() {
        todoTimer = undefined
        if (!id) return
        if (status === "idle" && !blocked) return
-        const cached = untrack(
-          () => sync().data.todo[id] !== undefined || serverSync().data.session_todo[id] !== undefined,
-        )
+        const cached = untrack(() => sync().data.todo[id] !== undefined)

        todoFrame = requestAnimationFrame(() => {
          todoFrame = undefined
@@ -50,7 +50,7 @@ export function createSessionComposerState(options?: { closeMs?: number | (() =>
  const todos = createMemo((): Todo[] => {
    const id = params.id
    if (!id) return []
-    return serverSync().data.session_todo[id] ?? []
+    return serverSync().session.data.todo[id] ?? []
  })

  const done = createMemo(
@@ -111,7 +111,6 @@ export function createSessionComposerState(options?: { closeMs?: number | (() =>
  const clear = () => {
    const id = params.id
    if (!id) return
-    serverSync().todo.set(id, [])
    sync().set("todo", id, [])
  }

@@ -1,7 +1,7 @@
 import { For, Show } from "solid-js"
 import type { PermissionRequest } from "@opencode-ai/sdk/v2"
 import { Button } from "@opencode-ai/ui/button"
-import { DockPrompt } from "@opencode-ai/ui/dock-prompt"
+import { DockPrompt } from "@opencode-ai/session-ui/dock-prompt"
 import { Icon } from "@opencode-ai/ui/icon"
 import { useLanguage } from "@/context/language"

@@ -2,7 +2,7 @@ import { For, Show, createMemo, onCleanup, onMount, type Component } from "solid
 import { createStore } from "solid-js/store"
 import { useMutation } from "@tanstack/solid-query"
 import { Button } from "@opencode-ai/ui/button"
-import { DockPrompt } from "@opencode-ai/ui/dock-prompt"
+import { DockPrompt } from "@opencode-ai/session-ui/dock-prompt"
 import { Icon } from "@opencode-ai/ui/icon"
 import { showToast } from "@/utils/toast"
 import type { QuestionAnswer, QuestionRequest } from "@opencode-ai/sdk/v2"
@@ -2,10 +2,10 @@ import { createEffect, createMemo, createSignal, Match, on, onCleanup, Switch }
 import { createStore } from "solid-js/store"
 import { Dynamic } from "solid-js/web"
 import { makeEventListener } from "@solid-primitives/event-listener"
-import type { FileSearchHandle } from "@opencode-ai/ui/file"
+import type { FileSearchHandle } from "@opencode-ai/session-ui/file"
 import { useFileComponent } from "@opencode-ai/ui/context/file"
-import { cloneSelectedLineRange, previewSelectedLines } from "@opencode-ai/ui/pierre/selection-bridge"
-import { createLineCommentController } from "@opencode-ai/ui/line-comment-annotations"
+import { cloneSelectedLineRange, previewSelectedLines } from "@opencode-ai/session-ui/pierre/selection-bridge"
+import { createLineCommentController } from "@opencode-ai/session-ui/line-comment-annotations"
 import { sampledChecksum } from "@opencode-ai/core/util/encode"
 import { DropdownMenu } from "@opencode-ai/ui/dropdown-menu"
 import { IconButton } from "@opencode-ai/ui/icon-button"
@@ -1,12 +1,12 @@
 import { createEffect, onCleanup, type JSX } from "solid-js"
 import { makeEventListener } from "@solid-primitives/event-listener"
 import type { SnapshotFileDiff, VcsFileDiff } from "@opencode-ai/sdk/v2"
-import { SessionReview } from "@opencode-ai/ui/session-review"
+import { SessionReview } from "@opencode-ai/session-ui/session-review"
 import type {
  SessionReviewCommentActions,
  SessionReviewCommentDelete,
  SessionReviewCommentUpdate,
-} from "@opencode-ai/ui/session-review"
+} from "@opencode-ai/session-ui/session-review"
 import type { SelectedLineRange } from "@/context/file"
 import { useSDK } from "@/context/sdk"
 import { useLayout } from "@/context/layout"
@@ -26,7 +26,7 @@ import {
  Part as MessagePart,
  partDefaultOpen,
  type UserActions,
-} from "@opencode-ai/ui/message-part"
+} from "@opencode-ai/session-ui/message-part"
 import { DiffChanges } from "@opencode-ai/ui/diff-changes"
 import { FileIcon } from "@opencode-ai/ui/file-icon"
 import { Icon } from "@opencode-ai/ui/icon"
@@ -35,7 +35,7 @@ import { DropdownMenu } from "@opencode-ai/ui/dropdown-menu"
 import { Dialog } from "@opencode-ai/ui/dialog"
 import { InlineInput } from "@opencode-ai/ui/inline-input"
 import { Spinner } from "@opencode-ai/ui/spinner"
-import { SessionRetry } from "@opencode-ai/ui/session-retry"
+import { SessionRetry } from "@opencode-ai/session-ui/session-retry"
 import { ScrollView } from "@opencode-ai/ui/scroll-view"
 import { StickyAccordionHeader } from "@opencode-ai/ui/sticky-accordion-header"
 import { TextField } from "@opencode-ai/ui/text-field"
@@ -51,12 +51,11 @@ import type {
 import { showToast } from "@/utils/toast"
 import { getDirectory, getFilename } from "@opencode-ai/core/util/path"
 import { Popover as KobaltePopover } from "@kobalte/core/popover"
-import { normalize } from "@opencode-ai/ui/session-diff"
+import { normalize } from "@opencode-ai/session-ui/session-diff"
 import { useFileComponent } from "@opencode-ai/ui/context/file"
 import { shouldMarkBoundaryGesture, normalizeWheelDelta } from "@/pages/session/message-gesture"
 import { SessionContextUsage } from "@/components/session-context-usage"
 import { useDialog } from "@opencode-ai/ui/context/dialog"
-import { createResizeObserver } from "@solid-primitives/resize-observer"
 import { useLanguage } from "@/context/language"
 import { useSessionKey } from "@/pages/session/session-layout"
 import { useServerSDK } from "@/context/server-sdk"
@@ -95,8 +94,6 @@ const taskDescription = (part: PartType, sessionID: string) => {
  if (typeof value === "string" && value) return value
 }

-const pace = (width: number) => Math.round(Math.max(1200, Math.min(3200, (Math.max(width, 360) * 2000) / 900)))
-
 const boundaryTarget = (root: HTMLElement, target: EventTarget | null) => {
  const current = target instanceof Element ? target : undefined
  const nested = current?.closest("[data-scrollable]")
@@ -567,18 +564,7 @@ export function MessageTimeline(props: {
    open: false,
    dismiss: null as "escape" | "outside" | null,
  })
-  const [bar, setBar] = createStore({
-    ms: pace(640),
-  })
  let more: HTMLButtonElement | undefined
-  let head: HTMLDivElement | undefined
-
-  const updateTitleMetrics = () => {
-    if (!head || head.clientWidth <= 0) return
-    setBar("ms", pace(head.clientWidth))
-  }
-
-  createResizeObserver(() => head, updateTitleMetrics)

  const bindListRoot = (root: HTMLDivElement) => {
    if (root === listRoot()) return
@@ -660,14 +646,14 @@ export function MessageTimeline(props: {
  }

  const shareMutation = useMutation(() => ({
-    mutationFn: (id: string) => serverSDK().client.session.share({ sessionID: id, directory: sdk().directory }),
+    mutationFn: (id: string) => serverSDK().client.session.share({ sessionID: id }),
    onError: (err) => {
      console.error("Failed to share session", err)
    },
  }))

  const unshareMutation = useMutation(() => ({
-    mutationFn: (id: string) => serverSDK().client.session.unshare({ sessionID: id, directory: sdk().directory }),
+    mutationFn: (id: string) => serverSDK().client.session.unshare({ sessionID: id }),
    onError: (err) => {
      console.error("Failed to unshare session", err)
    },
@@ -1291,10 +1277,6 @@ export function MessageTimeline(props: {
      >
        <Show when={showHeader()}>
          <div
-            ref={(el) => {
-              head = el
-              updateTitleMetrics()
-            }}
            data-session-title
            classList={{
              "sticky top-0 z-30 bg-[linear-gradient(to_bottom,var(--background-stronger)_48px,transparent)]": true,
@@ -1306,17 +1288,6 @@ export function MessageTimeline(props: {
              "md:max-w-200 md:mx-auto 2xl:max-w-[1000px]": props.centered,
            }}
          >
-            <Show when={workingStatus() !== "hidden" && settings.general.showSessionProgressBar()}>
-              <div data-component="session-progress" data-state={workingStatus()} aria-hidden="true">
-                <div
-                  data-component="session-progress-bar"
-                  style={{
-                    background: tint() ?? "var(--icon-interactive-base)",
-                    animation: `session-progress-whip ${bar.ms}ms infinite`,
-                  }}
-                />
-              </div>
-            </Show>
            <div class="h-12 w-full flex items-center justify-between gap-2">
              <div class="flex items-center gap-1 min-w-0 flex-1 pr-3">
                <div class="flex items-center min-w-0 grow-1">
@@ -1,37 +1,29 @@
 import type { Message, UserMessage } from "@opencode-ai/sdk/v2"
 import { createMemo, createResource, onCleanup, untrack, type Accessor } from "solid-js"
-import { getSessionPrefetch, SESSION_PREFETCH_TTL } from "@/context/global-sync/session-prefetch"
-import { useSDK } from "@/context/sdk"
-import { useServerSDK } from "@/context/server-sdk"
+import { useServerSync } from "@/context/server-sync"
 import { useSync } from "@/context/sync"
 import { same } from "@/utils/same"

 const emptyUserMessages: UserMessage[] = []
+const sessionFreshness = 15_000

 export function createTimelineModel(input: {
  sessionID: Accessor<string | undefined>
  revertMessageID: Accessor<string | undefined>
 }) {
-  const sdk = useSDK()
-  const serverSDK = useServerSDK()
+  const serverSync = useServerSync()
  const sync = useSync()
  let refreshFrame: number | undefined
  let refreshTimer: number | undefined

  const [resource] = createResource(
-    () => [sdk().directory, input.sessionID()] as const,
-    ([directory, id]) => {
+    () => input.sessionID(),
+    (id) => {
      clearRefresh()
      if (!id) return

      const cached = untrack(() => sync().data.message[id] !== undefined)
-      const stale = cached
-        ? (() => {
-            const info = getSessionPrefetch(serverSDK().scope, directory, id)
-            if (!info) return true
-            return Date.now() - info.at > SESSION_PREFETCH_TTL
-          })()
-        : false
+      const stale = cached && !serverSync().session.fresh(id, sessionFreshness)

      refreshFrame = requestAnimationFrame(() => {
        refreshFrame = undefined
@@ -1,6 +1,6 @@
 import { parseCommentNote, readCommentMetadata } from "@/utils/comment-note"
 import { AssistantMessage, Part, SessionStatus, SnapshotFileDiff, UserMessage } from "@opencode-ai/sdk/v2"
-import { groupParts, PartGroup, renderable } from "@opencode-ai/ui/message-part"
+import { groupParts, PartGroup, renderable } from "@opencode-ai/session-ui/message-part"
 import { Data, Equal } from "effect"

 export type SummaryDiff = SnapshotFileDiff & { file: string }
@@ -1,7 +1,7 @@
 import { useNavigate } from "@solidjs/router"
 import { useCommand, type CommandOption } from "@/context/command"
 import { useDialog } from "@opencode-ai/ui/context/dialog"
-import { previewSelectedLines } from "@opencode-ai/ui/pierre/selection-bridge"
+import { previewSelectedLines } from "@opencode-ai/session-ui/pierre/selection-bridge"
 import { useFile, selectionFromLines, type FileSelection, type SelectedLineRange } from "@/context/file"
 import { useLanguage } from "@/context/language"
 import { useLayout } from "@/context/layout"
@@ -1,38 +0,0 @@
-import { describe, expect, test } from "bun:test"
-import { ServerConnection } from "@/context/server"
-import { createSessionPlacementStore } from "./session-placement"
-
-describe("session placement", () => {
-  const local = ServerConnection.Key.make("http://localhost:4096")
-  const remote = ServerConnection.Key.make("https://example.com")
-
-  test("aliases a leaf and root without crossing servers", () => {
-    const store = createSessionPlacementStore()
-    store.set({ server: local, leafID: "child", rootID: "root", directory: "/repo" })
-    store.set({ server: remote, leafID: "child", rootID: "other", directory: "/remote" })
-
-    expect(store.get(local, "child")).toEqual({ rootID: "root", directory: "/repo" })
-    expect(store.get(local, "root")).toEqual({ rootID: "root", directory: "/repo" })
-    expect(store.get(remote, "child")).toEqual({ rootID: "other", directory: "/remote" })
-  })
-
-  test("inherits known placement for in-app child navigation", () => {
-    const store = createSessionPlacementStore()
-    store.set({ server: local, leafID: "parent", rootID: "root", directory: "/repo" })
-
-    expect(store.inherit(local, "parent", "child")).toEqual({ rootID: "root", directory: "/repo" })
-    expect(store.get(local, "child")).toEqual({ rootID: "root", directory: "/repo" })
-    expect(store.inherit(local, "missing", "unknown")).toBeUndefined()
-  })
-
-  test("bounds retained placement aliases", () => {
-    const store = createSessionPlacementStore()
-    for (let index = 0; index < 300; index++) {
-      store.set({ server: local, leafID: `leaf-${index}`, rootID: `root-${index}`, directory: `/repo/${index}` })
-    }
-
-    expect(store.size()).toBeLessThanOrEqual(256)
-    expect(store.get(local, "leaf-0")).toBeUndefined()
-    expect(store.get(local, "leaf-299")).toEqual({ rootID: "root-299", directory: "/repo/299" })
-  })
-})
@@ -1,41 +0,0 @@
-import { ServerConnection } from "@/context/server"
-
-export type SessionPlacement = {
-  rootID: string
-  directory: string
-}
-
-export function createSessionPlacementStore() {
-  const placements = new Map<string, SessionPlacement>()
-  const limit = 256
-  const key = (server: ServerConnection.Key, sessionID: string) => `${server}\0${sessionID}`
-  const write = (id: string, placement: SessionPlacement) => {
-    placements.delete(id)
-    placements.set(id, placement)
-    while (placements.size > limit) placements.delete(placements.keys().next().value!)
-  }
-
-  return {
-    get(server: ServerConnection.Key, sessionID: string) {
-      const id = key(server, sessionID)
-      const placement = placements.get(id)
-      if (placement) write(id, placement)
-      return placement
-    },
-    set(input: SessionPlacement & { server: ServerConnection.Key; leafID: string }) {
-      const placement = { rootID: input.rootID, directory: input.directory }
-      write(key(input.server, input.leafID), placement)
-      write(key(input.server, input.rootID), placement)
-      return placement
-    },
-    inherit(server: ServerConnection.Key, sourceID: string, leafID: string) {
-      const placement = placements.get(key(server, sourceID))
-      if (!placement) return
-      write(key(server, leafID), placement)
-      return placement
-    },
-    size() {
-      return placements.size
-    },
-  }
-}
@@ -36,4 +36,13 @@ describe("session routes", () => {
      }),
    ).toBe(sessions.root)
  })
+
+  test("rejects a parent cycle", async () => {
+    const sessions: Record<string, { id: string; parentID?: string }> = {
+      child: { id: "child", parentID: "parent" },
+      parent: { id: "parent", parentID: "child" },
+    }
+
+    expect(rootSession(sessions.child, async (id) => sessions[id]!)).rejects.toThrow("Session parent cycle: child")
+  })
 })
@@ -18,8 +18,13 @@ export function requireServerKey(segment: string | undefined) {

 type SessionParent = { id: string; parentID?: string }

-export async function rootSession(session: SessionParent, get: (sessionID: string) => Promise<SessionParent>) {
+export async function rootSession<T extends SessionParent>(session: T, get: (sessionID: string) => Promise<T>) {
+  const seen = new Set([session.id])
  let current = session
-  while (current.parentID) current = await get(current.parentID)
+  while (current.parentID) {
+    if (seen.has(current.parentID)) throw new Error(`Session parent cycle: ${current.parentID}`)
+    seen.add(current.parentID)
+    current = await get(current.parentID)
+  }
  return current
 }
@@ -1,7 +1,7 @@
 {
  "$schema": "https://json.schemastore.org/package.json",
  "name": "@opencode-ai/cli",
-  "version": "1.17.9",
+  "version": "1.17.10",
  "type": "module",
  "license": "MIT",
  "bin": {
@@ -1,6 +1,6 @@
 {
  "name": "@opencode-ai/console-app",
-  "version": "1.17.9",
+  "version": "1.17.10",
  "type": "module",
  "license": "MIT",
  "scripts": {
@@ -196,6 +196,7 @@ export async function handler(
          providerInfo.modifyHeaders(headers, providerInfo.apiKey, stickyId)
          Object.entries(providerInfo.headerModifier ?? {}).forEach(([k, v]) => {
            if (v === "$ip") return headers.set(k, ip)
+            if (v === "$caller") return headers.set(k, `caller:${ip}`)
            if (v === "$session") return headers.set(k, sessionId)
            if (v === "$model") return headers.set(k, model)
            if (v === "$request") return headers.set(k, requestId)
@@ -354,7 +355,7 @@ export async function handler(
              responseLength += value.length
              buffer += decoder.decode(value, { stream: true })

-              const parts = buffer.split(providerInfo.streamSeparator)
+              const parts = buffer.split(/\r\n\r\n|\n\n|\r\r/)
              buffer = parts.pop() ?? ""

              for (let part of parts) {
@@ -139,7 +139,6 @@ export const anthropicHelper: ProviderHelper = ({ reqModel, providerModel }) =>
        return encoder.encode(messages.join(""))
      }
    },
-    streamSeparator: "\n\n",
    createUsageParser: () => {
      let usage: Usage

@@ -37,7 +37,6 @@ export const googleHelper: ProviderHelper = ({ providerModel }) => ({
    return body
  },
  createBinaryStreamDecoder: () => undefined,
-  streamSeparator: "\r\n\r\n",
  createUsageParser: () => {
    let usage: Usage

@@ -37,7 +37,6 @@ export const oaCompatHelper: ProviderHelper = ({ adjustCacheUsage }) => ({
    }
  },
  createBinaryStreamDecoder: () => undefined,
-  streamSeparator: "\n\n",
  createUsageParser: () => {
    let usage: Usage

@@ -20,7 +20,6 @@ export const openaiHelper: ProviderHelper = ({ workspaceID }) => ({
  },
  modifyBody: (body: Record<string, any>) => body,
  createBinaryStreamDecoder: () => undefined,
-  streamSeparator: "\n\n",
  createUsageParser: () => {
    let usage: Usage

@@ -44,7 +44,6 @@ export type ProviderHelper = (input: {
  modifyHeaders: (headers: Headers, apiKey: string, stickyId: string) => void
  modifyBody: (body: Record<string, any>) => Record<string, any>
  createBinaryStreamDecoder: () => ((chunk: Uint8Array) => Uint8Array | undefined) | undefined
-  streamSeparator: string
  createUsageParser: () => {
    parse: (chunk: string) => void
    retrieve: () => any
@@ -1,7 +1,7 @@
 {
  "$schema": "https://json.schemastore.org/package.json",
  "name": "@opencode-ai/console-core",
-  "version": "1.17.9",
+  "version": "1.17.10",
  "private": true,
  "type": "module",
  "license": "MIT",
@@ -1,6 +1,6 @@
 {
  "name": "@opencode-ai/console-function",
-  "version": "1.17.9",
+  "version": "1.17.10",
  "$schema": "https://json.schemastore.org/package.json",
  "private": true,
  "type": "module",
@@ -118,11 +118,12 @@ function toLakeEvent(time: string, data: Record<string, unknown>) {
    request: string(data, "request"),
    client: string(data, "client"),
    user_agent: string(data, "user_agent"),
+    model: string(data, "model"),
+    model_tier: string(data, "model.tier"),
    model_variant: string(data, "model.variant"),
    source: string(data, "source"),
    provider: string(data, "provider"),
    provider_model: string(data, "provider.model"),
-    model: string(data, "model"),
    llm_error_code: integer(data, "llm.error.code"),
    llm_error_message: string(data, "llm.error.message"),
    error_response: string(data, "error.response"),
@@ -1,6 +1,6 @@
 {
  "name": "@opencode-ai/console-mail",
-  "version": "1.17.9",
+  "version": "1.17.10",
  "dependencies": {
    "@jsx-email/all": "2.2.3",
    "@jsx-email/cli": "1.4.3",
@@ -1,6 +1,6 @@
 {
  "name": "@opencode-ai/console-support",
-  "version": "1.17.9",
+  "version": "1.17.10",
  "type": "module",
  "license": "MIT",
  "scripts": {
@@ -1,6 +1,6 @@
 {
  "$schema": "https://json.schemastore.org/package.json",
-  "version": "1.17.9",
+  "version": "1.17.10",
  "name": "@opencode-ai/core",
  "type": "module",
  "license": "MIT",
@@ -1,8 +1,8 @@
 export * as Catalog from "./catalog"

 import { Array, Context, Effect, Layer, Option, Order, pipe, Schema } from "effect"
+import { Catalog } from "@opencode-ai/schema/catalog"
 import { ModelV2 } from "./model"
-import { ModelRequest } from "./model-request"
 import { ProviderV2 } from "./provider"
 import { EventV2 } from "./event"
 import { Policy } from "./policy"
@@ -18,9 +18,7 @@ export type DefaultModel = { providerID: ProviderV2.ID; modelID: ModelV2.ID }

 export const PolicyActions = Schema.Literals(["provider.use"])

-export const Event = {
-  Updated: EventV2.define({ type: "catalog.updated", schema: {} }),
-}
+export const Event = Catalog.Event

 type Data = {
  providers: Map<ProviderV2.ID, ProviderRecord>
@@ -86,7 +84,8 @@ export const layer = Layer.effect(
              ? { ...model.api, settings: { ...provider.api.settings, ...model.api.settings } }
              : model.api
      const request = {
-        ...ModelRequest.merge({ ...provider.request, generation: {}, options: {} }, model.request),
+        headers: { ...provider.request.headers, ...model.request.headers },
+        body: { ...provider.request.body, ...model.request.body },
        variant: model.request.variant,
      }
      return ModelV2.Info.make({
@@ -4,7 +4,6 @@ import { define } from "../../plugin/internal"
 import { Effect } from "effect"
 import { Config } from "../../config"
 import { ModelV2 } from "../../model"
-import { ModelRequest } from "../../model-request"
 import { ProviderV2 } from "../../provider"

 export const Plugin = define({
@@ -59,15 +58,11 @@ export const Plugin = define({
                Object.assign(provider.request.body, item.request.body)
              }
            })
-            const providerApi = catalog.provider.get(providerID)?.provider.api
-            const providerPackage = providerApi?.type === "aisdk" ? providerApi.package : undefined
-
            for (const [id, config] of Object.entries(item.models ?? {})) {
              catalog.model.update(providerID, id, (model) => {
                if (config.family !== undefined) model.family = config.family
                if (config.name !== undefined) model.name = config.name
                if (config.api !== undefined) model.api = { ...model.api, ...config.api }
-                const packageName = model.api.type === "aisdk" ? model.api.package : providerPackage
                if (config.capabilities !== undefined) {
                  model.capabilities = {
                    tools: config.capabilities.tools,
@@ -76,10 +71,8 @@ export const Plugin = define({
                  }
                }
                if (config.request !== undefined) {
-                  ModelRequest.assign(model.request, {
-                    headers: config.request.headers,
-                    ...ModelRequest.normalizeAiSdkOptions(packageName, config.request.body ?? {}),
-                  })
+                  Object.assign(model.request.headers, config.request.headers)
+                  Object.assign(model.request.body, config.request.body)
                  if (config.request.variant !== undefined) model.request.variant = config.request.variant
                }
                if (config.variants !== undefined) {
@@ -90,15 +83,11 @@ export const Plugin = define({
                        id: variant.id,
                        headers: {},
                        body: {},
-                        generation: {},
-                        options: {},
                      }
                      model.variants.push(existing)
                    }
-                    ModelRequest.assign(existing, {
-                      headers: variant.headers,
-                      ...ModelRequest.normalizeAiSdkOptions(packageName, variant.body ?? {}),
-                    })
+                    Object.assign(existing.headers, variant.headers)
+                    Object.assign(existing.body, variant.body)
                  }
                }
                if (config.cost !== undefined) {
@@ -84,15 +84,20 @@ export const layer = Layer.effect(
        return yield* new DestinationProjectMismatchError({ expected: current.projectID, actual: destination.id })
      }

-      const patch =
-        input.moveChanges && source.directory !== destination.directory
-          ? yield* git
-              .patch(current.location.directory)
-              .pipe(Effect.mapError((error) => new CaptureChangesError({ message: error.message })))
-          : ""
+      const moveChanges = input.moveChanges && source.directory !== destination.directory
+      const sourceRepository = moveChanges ? yield* git.repo.discover(current.location.directory) : undefined
+      if (moveChanges && !sourceRepository)
+        return yield* new CaptureChangesError({ message: "Source is not a Git repository" })
+      const patch = sourceRepository
+        ? yield* git.change
+            .capture({ repository: sourceRepository, path: current.location.directory })
+            .pipe(Effect.mapError((error) => new CaptureChangesError({ message: error.message })))
+        : Git.ChangeSet.make("")
      if (patch) {
-        yield* git
-          .applyPatch({ directory, patch })
+        const repository = yield* git.repo.discover(directory)
+        if (!repository) return yield* new ApplyChangesError({ message: "Destination is not a Git repository" })
+        yield* git.change
+          .apply({ repository, path: directory, changes: patch })
          .pipe(Effect.mapError((error) => new ApplyChangesError({ message: error.message })))
      }

@@ -104,16 +109,29 @@ export const layer = Layer.effect(
      })

      if (patch) {
-        yield* git.softResetChanges(current.location.directory).pipe(
-          Effect.mapError(
-            (error) =>
-              new ResetSourceChangesError({
-                directory: current.location.directory,
-                message: error.message,
-                cause: error.cause,
-              }),
-          ),
-        )
+        const repository = yield* git.repo.discover(current.location.directory)
+        if (!repository)
+          return yield* new ResetSourceChangesError({
+            directory: current.location.directory,
+            message: "Source is not a Git repository",
+          })
+        yield* git.change
+          .discard({
+            repository,
+            path: current.location.directory,
+            index: "preserve",
+            untracked: "remove",
+          })
+          .pipe(
+            Effect.mapError(
+              (error) =>
+                new ResetSourceChangesError({
+                  directory: current.location.directory,
+                  message: error.message,
+                  cause: error.cause,
+                }),
+            ),
+          )
      }
    })

@@ -1,46 +1,19 @@
 export * as EventV2 from "./event"

 import { Cause, Context, Effect, Layer, Option, PubSub, Schema, Stream } from "effect"
+import { Event } from "@opencode-ai/schema/event"
+import type { Data, Definition, Payload } from "@opencode-ai/schema/event"
 import { and, asc, eq, gt } from "drizzle-orm"
 import { Database } from "./database/database"
 import { EventSequenceTable, EventTable } from "./event/sql"
 import { Location } from "./location"
-import { withStatics } from "./schema"
-import { Identifier } from "./util/identifier"
 import { LayerNode } from "./effect/layer-node"
 import { isDeepStrictEqual } from "node:util"
+import { Durable } from "@opencode-ai/schema/durable-event-manifest"

-export const ID = Schema.String.check(Schema.isStartsWith("evt_")).pipe(
-  Schema.brand("Event.ID"),
-  withStatics((schema) => ({
-    create: () => schema.make("evt_" + Identifier.ascending()),
-  })),
-)
-export type ID = typeof ID.Type
-
-export type Definition<Type extends string = string, DataSchema extends Schema.Top = Schema.Top> = {
-  readonly type: Type
-  readonly durable?: {
-    readonly version: number
-    readonly aggregate: string
-  }
-  readonly data: DataSchema
-}
-
-export type Data<D extends Definition> = Schema.Schema.Type<D["data"]>
-
-export type Payload<D extends Definition = Definition> = {
-  readonly id: ID
-  readonly type: D["type"]
-  readonly data: Data<D>
-  readonly durable?: {
-    readonly aggregateID: string
-    readonly seq: number
-    readonly version: number
-  }
-  readonly location?: Location.Ref
-  readonly metadata?: Record<string, unknown>
-}
+export const ID = Event.ID
+export type ID = import("@opencode-ai/schema/event").ID
+export type { Data, Definition, Payload } from "@opencode-ai/schema/event"

 export type Subscriber<D extends Definition = Definition> = (event: Payload<D>) => Effect.Effect<void>
 export type Unsubscribe = Effect.Effect<void>
@@ -74,52 +47,8 @@ export class InvalidDurableEventError extends Schema.TaggedErrorClass<InvalidDur
  },
 ) {}

-export function versionedType(type: string, version: number) {
-  return `${type}.${version}`
-}
-
-export const registry = new Map<string, Definition>()
-const durableRegistry = new Map<string, Definition>()
-
-export function define<const Type extends string, Fields extends Schema.Struct.Fields>(input: {
-  readonly type: Type
-  readonly durable?: {
-    readonly version: number
-    readonly aggregate: string
-  }
-  readonly schema: Fields
-}): Schema.Schema<Payload<Definition<Type, Schema.Struct<Fields>>>> & Definition<Type, Schema.Struct<Fields>> {
-  const Data = Schema.Struct(input.schema)
-  const Payload = Schema.Struct({
-    id: ID,
-    metadata: Schema.optional(Schema.Record(Schema.String, Schema.Unknown)),
-    type: Schema.Literal(input.type),
-    durable: Schema.optional(Schema.Struct({ aggregateID: Schema.String, seq: Schema.Number, version: Schema.Number })),
-    location: Schema.optional(Location.Ref),
-    data: Data,
-  }).annotate({ identifier: input.type })
-
-  const definition = Object.assign(Payload, {
-    type: input.type,
-    ...(input.durable === undefined ? {} : { durable: input.durable }),
-    data: Data,
-  })
-  const existing = registry.get(input.type)
-  if (
-    input.durable === undefined ||
-    existing?.durable === undefined ||
-    input.durable.version >= existing.durable.version
-  ) {
-    registry.set(input.type, definition)
-  }
-  if (input.durable) durableRegistry.set(versionedType(input.type, input.durable.version), definition)
-  return definition as Schema.Schema<Payload<Definition<Type, Schema.Struct<Fields>>>> &
-    Definition<Type, Schema.Struct<Fields>>
-}
-
-export function definitions() {
-  return registry.values().toArray()
-}
+export const define = Event.define
+export const versionedType = Event.versionedType

 export interface PublishOptions {
  readonly id?: ID
@@ -169,6 +98,7 @@ export const layerWith = (options?: LayerOptions) =>
        typed: new Map<string, PubSub.PubSub<Payload>>(),
      }
      const projectors = new Map<string, Subscriber[]>()
+      // TODO: Bind durable projectors to exact type+version before supporting incompatible historical payloads.
      const listeners = new Array<Subscriber>()
      const { db } = yield* Database.Service

@@ -194,6 +124,7 @@ export const layerWith = (options?: LayerOptions) =>
      )

      function commitDurableEvent(
+        definition: Definition,
        event: Payload,
        input?: {
          readonly seq: number
@@ -204,7 +135,6 @@ export const layerWith = (options?: LayerOptions) =>
        commit?: (seq: number) => Effect.Effect<void>,
      ) {
        return Effect.gen(function* () {
-          const definition = registry.get(event.type)
          const durable = definition?.durable
          if (durable) {
            const aggregateID = (event.data as Record<string, unknown>)[durable.aggregate]
@@ -238,9 +168,10 @@ export const layerWith = (options?: LayerOptions) =>
                            .get()
                            .pipe(Effect.orDie)
                          const latest = row?.seq ?? -1
-                          const encoded = Schema.encodeUnknownSync(
-                            definition.data as Schema.Codec<unknown, unknown, never, never>,
-                          )(event.data) as Record<string, unknown>
+                          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({
@@ -356,9 +287,8 @@ export const layerWith = (options?: LayerOptions) =>
        })
      }

-      function publishEvent<D extends Definition>(event: Payload<D>, commit?: PublishOptions["commit"]) {
+      function publishEvent<D extends Definition>(definition: D, event: Payload<D>, commit?: PublishOptions["commit"]) {
        return Effect.gen(function* () {
-          const definition = registry.get(event.type)
          if (!definition?.durable && commit)
            return yield* Effect.die(
              new InvalidDurableEventError({
@@ -367,7 +297,7 @@ export const layerWith = (options?: LayerOptions) =>
              }),
            )
          if (definition?.durable) {
-            const committed = yield* commitDurableEvent(event as Payload, undefined, commit)
+            const committed = yield* commitDurableEvent(definition, event as Payload, undefined, commit)
            if (committed) {
              event = {
                ...event,
@@ -416,6 +346,7 @@ export const layerWith = (options?: LayerOptions) =>
              ? { directory: serviceLocation.directory, workspaceID: serviceLocation.workspaceID }
              : undefined)
          return yield* publishEvent(
+            definition,
            {
              id: options?.id ?? ID.create(),
              ...(options?.metadata ? { metadata: options.metadata } : {}),
@@ -433,7 +364,7 @@ export const layerWith = (options?: LayerOptions) =>
        options?: { readonly publish?: boolean; readonly ownerID?: string; readonly strictOwner?: boolean },
      ) {
        return Effect.gen(function* () {
-          const definition = durableRegistry.get(event.type)
+          const definition = Durable.get(event.type)
          if (!definition?.durable) {
            yield* Effect.die(
              new InvalidDurableEventError({ type: event.type, message: `Unknown durable event type ${event.type}` }),
@@ -442,11 +373,9 @@ export const layerWith = (options?: LayerOptions) =>
            const payload = {
              id: event.id,
              type: definition.type,
-              data: Schema.decodeUnknownSync(definition.data as Schema.Codec<unknown, unknown, never, never>)(
-                event.data,
-              ),
+              data: Schema.decodeUnknownSync(definition.data)(event.data),
            } as Payload
-            const committed = yield* commitDurableEvent(payload, {
+            const committed = yield* commitDurableEvent(definition, payload, {
              seq: event.seq,
              aggregateID: event.aggregateID,
              ownerID: options?.ownerID,
@@ -530,8 +459,8 @@ export const layerWith = (options?: LayerOptions) =>

      const streamAll = (): Stream.Stream<Payload> => Stream.fromPubSub(pubsub.all)

-      const decodeSerializedEvent = (event: SerializedEvent): Payload => {
-        const definition = durableRegistry.get(event.type)
+      const decodeSerializedEvent = (event: SerializedEvent) => {
+        const definition = Durable.get(event.type)
        if (!definition?.durable) {
          throw new InvalidDurableEventError({ type: event.type, message: `Unknown durable event type ${event.type}` })
        }
@@ -539,7 +468,7 @@ export const layerWith = (options?: LayerOptions) =>
          id: event.id,
          type: definition.type,
          durable: { aggregateID: event.aggregateID, seq: event.seq, version: definition.durable.version },
-          data: Schema.decodeUnknownSync(definition.data as Schema.Codec<unknown, unknown, never, never>)(event.data),
+          data: Schema.decodeUnknownSync(definition.data)(event.data),
        }
      }

@@ -0,0 +1,6 @@
+export * as File from "./file"
+
+import { Revert } from "@opencode-ai/schema/revert"
+
+export const Diff = Revert.FileDiff
+export type Diff = typeof Diff.Type
@@ -2,12 +2,11 @@ export * as FileSystem from "./filesystem"

 import path from "path"
 import { Context, Effect, Layer, Schema } from "effect"
-import { EventV2 } from "./event"
 import { FSUtil } from "./fs-util"
 import { Location } from "./location"
 import { PositiveInt, RelativePath } from "./schema"
 import { FileSystemSearch } from "./filesystem/search"
-import { Entry, Match } from "@opencode-ai/schema/filesystem"
+import { Entry, FileSystem, FindInput, Match } from "@opencode-ai/schema/filesystem"
 export { Entry, Match, Submatch } from "@opencode-ai/schema/filesystem"

 export const ReadInput = Schema.Struct({
@@ -29,11 +28,7 @@ export const ListInput = Schema.Struct({
 })
 export type ListInput = typeof ListInput.Type

-export class FindInput extends Schema.Class<FindInput>("FileSystem.FindInput")({
-  query: Schema.String,
-  type: Schema.Literals(["file", "directory"]).pipe(Schema.optional),
-  limit: PositiveInt.pipe(Schema.optional),
-}) {}
+export { FindInput }

 export class GlobInput extends Schema.Class<GlobInput>("FileSystem.GlobInput")({
  pattern: Schema.String,
@@ -48,14 +43,7 @@ export class GrepInput extends Schema.Class<GrepInput>("FileSystem.GrepInput")({
  limit: PositiveInt.pipe(Schema.optional),
 }) {}

-export const Event = {
-  Edited: EventV2.define({
-    type: "file.edited",
-    schema: {
-      file: Schema.String,
-    },
-  }),
-}
+export const Event = FileSystem.Event

 export interface Interface {
  readonly read: (input: ReadInput) => Effect.Effect<{ readonly content: Uint8Array; readonly mime: string }>
@@ -127,12 +127,19 @@ export const fffLayer = Layer.effect(
        Fff.create({
          basePath: location.directory,
          aiMode: true,
-          enableFsRootScanning: true,
-          enableHomeDirScanning: true,
        }),
      catch: (cause) => cause,
-    }).pipe(Effect.orDie)
-    if (!result.ok) return yield* Effect.die(result.error)
+    }).pipe(
+      Effect.catch((error) => Effect.logWarning("failed to initialize fff", { error }).pipe(Effect.as(undefined))),
+    )
+    if (!result?.ok) {
+      if (result) yield* Effect.logWarning("failed to initialize fff", { error: result.error })
+      return Service.of({
+        find: () => Effect.succeed([]),
+        glob: () => Effect.succeed([]),
+        grep: () => Effect.succeed([]),
+      })
+    }
    yield* Effect.addFinalizer(() => Effect.sync(() => result.value.destroy()).pipe(Effect.ignore))
    return Service.of({
      glob: (input) =>
@@ -3,7 +3,8 @@ export * as Watcher from "./watcher"
 // @ts-ignore
 import { createWrapper } from "@parcel/watcher/wrapper"
 import type ParcelWatcher from "@parcel/watcher"
-import { Cause, Context, Effect, Layer, Schema } from "effect"
+import { Cause, Context, Effect, Layer } from "effect"
+import { FileSystemWatcher } from "@opencode-ai/schema/filesystem-watcher"
 import path from "path"
 import { Config } from "../config"
 import { EventV2 } from "../event"
@@ -19,15 +20,7 @@ declare const OPENCODE_LIBC: string | undefined

 const SUBSCRIBE_TIMEOUT_MS = 10_000

-export const Event = {
-  Updated: EventV2.define({
-    type: "file.watcher.updated",
-    schema: {
-      file: Schema.String,
-      event: Schema.Literals(["add", "change", "unlink"]),
-    },
-  }),
-}
+export const Event = FileSystemWatcher.Event

 const watcher = lazy((): typeof import("@parcel/watcher") | undefined => {
  try {
@@ -119,7 +112,7 @@ export const layer = Layer.effect(
    }

    if (location.vcs?.type === "git") {
-      const resolved = yield* git.dir(location.directory)
+      const resolved = (yield* git.repo.discover(location.directory))?.gitDirectory
      const vcs = resolved ? yield* fs.realPath(resolved).pipe(Effect.catch(() => Effect.succeed(resolved))) : undefined
      if (vcs && !config.includes(".git") && !config.includes(vcs) && (!resolved || !config.includes(resolved))) {
        const ignore = (yield* fs.readDirectoryEntries(vcs).pipe(Effect.catch(() => Effect.succeed([])))).flatMap(
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Kit Langton	f8e5b12f41	fix(core): preserve provider session failures	2026-06-24 22:43:18 -04:00
opencode-agent[bot]	c45d1db9a0	chore: update nix node_modules hashes	2026-06-25 02:28:42 +00:00
Brendan Allan GitHub Test	ba2ba770d5	fix(app): clear late session notifications (#33753 ) Co-authored-by: Test <test@opencode.test>	2026-06-25 02:21:42 +00:00
opencode-agent[bot]	5ca19947d9	chore: generate	2026-06-25 02:18:06 +00:00
Brendan AllanandGitHub	3b4aaafd41	refactor(app): centralize session state (#33641 )	2026-06-25 02:16:39 +00:00
Kit LangtonandGitHub	56a37c3640	refactor(protocol): extract server contracts (#33708 )	2026-06-24 22:15:31 -04:00
opencode-agent[bot]GitHub Test	f9dac262ff	fix(app): remove session loading stripe (#33649 ) Co-authored-by: Test <test@opencode.test>	2026-06-25 10:09:06 +08:00
opencode-agent[bot]	3730125f8f	chore: generate	2026-06-24 23:43:02 +00:00
DaxandGitHub	9bb5370205	feat(core): add session snapshot and revert system (#33226 )	2026-06-24 23:41:16 +00:00
Dax Raad	25c6abc31a	fix(core): lower OpenAI text verbosity	2026-06-24 19:32:59 -04:00
Dax Raad	f4afb2c0a5	fix(core): preserve unconfigured console models	2026-06-24 18:58:17 -04:00
Dax Raad	bba74985ab	fix(core): handle unavailable fff index	2026-06-24 18:49:22 -04:00
Dax Raad	e9ee2129ea	fix(core): disable fff broad scanning	2026-06-24 18:42:15 -04:00
Dax Raad	68260ea6c9	fix(core): scope fff broad scanning	2026-06-24 18:42:15 -04:00
Aiden ClineandGitHub	49ea8a9455	fix(opencode): always print MCP OAuth URL (#33716 )	2026-06-24 17:24:16 -05:00
Isaac HuangandGitHub	142c5c11d9	docs: add GMI Cloud provider entry to providers directory (#32914 )	2026-06-24 17:15:36 -05:00
opencode-agent[bot]	4b83f5d8f0	chore: update nix node_modules hashes	2026-06-24 20:56:38 +00:00
opencode-agent[bot]	121decfd15	chore: generate	2026-06-24 20:45:23 +00:00
Kit LangtonandGitHub	24b0132bc5	refactor(schema): extract public event definitions (#33579 )	2026-06-24 16:43:17 -04:00
opencode	858f35f1b3	sync release versions for v1.17.10	2026-06-24 20:37:40 +00:00
Simon KleeandGitHub	20750a3295	tui: remove logo animation (#33633 ) Render branding as a static logo to avoid continuous redraws and mouse-driven visual effects.	2026-06-24 19:28:46 +00:00
Aiden ClineandGitHub	1ddb75dd3e	fix: restore dev CI (#33701 )	2026-06-24 14:04:50 -05:00
Frank	ea5dd9d940	zen: track model tier in stats	2026-06-24 14:34:58 -04:00
opencode-agent[bot]	31b58b4704	chore: generate	2026-06-24 17:21:26 +00:00
Dax Raad	42bb793574	feat(core): generate model variants	2026-06-24 13:17:14 -04:00
Dax Raad	17f312d537	refactor(core): simplify model requests	2026-06-24 13:17:14 -04:00
Aiden ClineandGitHub	116ac93ddb	fix(mcp): hide denied resource template tool (#33686 )	2026-06-24 12:01:44 -05:00
opencode-agent[bot]	2684293291	chore: generate	2026-06-24 16:56:33 +00:00
4rcadia GitHub Aiden Cline	e8e83afbce	feat(mcp): append server instructions to context (#32490 ) Co-authored-by: Aiden Cline <aidenpcline@gmail.com>	2026-06-24 11:54:19 -05:00
Adam	2e909334c1	refactor(stats): simplify locale prefix stripping	2026-06-24 10:33:59 -05:00
Adam	69f3b633b8	fix(stats): strip locale prefixes from data routes	2026-06-24 10:33:58 -05:00
Frank	db7c28b3ee	zen: migrate to new inference	2026-06-24 11:15:42 -04:00
opencode-agent[bot]	e45f55d922	chore: update nix node_modules hashes	2026-06-24 15:09:00 +00:00
Victor NavarroandGitHub	04c1730c90	refactor(ui): isolate session components (#33670 )	2026-06-24 14:56:09 +00:00
opencode-agent[bot]	1ef0fd5d01	chore: generate	2026-06-24 13:59:28 +00:00
Shoubhit DashandGitHub	36501a81c3	docs(llm): propose AI library design (#33666 )	2026-06-24 19:27:21 +05:30