refactor(app): finish moving persisted stores off Effect Schema

The composer, prompt history and comment stores port to plain codecs, persisted() becomes codec-only and the Effect-based Persistence helpers are removed. Session-file import keeps validating against the shared Effect schema from a lazily loaded module with static imports, so the bundler keeps only what it uses. The desktop renderer's SSH reconnect polls with a timer instead of an Effect schedule. Effect remains in the renderer's initial graph only through the shared schema package's ID helpers.
refactor(app): keep the SSH contract schemas out of the renderer
2026-09-23 00:57:38 +00:00 · 2026-09-20 16:37:03 +10:00 · 2026-09-20 16:37:02 +10:00 · 2026-09-20 16:37:02 +10:00 · 2026-09-20 16:37:01 +10:00 · 2026-09-20 16:37:00 +10:00
414 changed files with 4192 additions and 9124 deletions
@@ -112,12 +112,11 @@ jobs:
      - name: Run unit tests
        timeout-minutes: 20
        run: |
-          # The runners have four vCPUs, and each Bun test process performs its own concurrent work.
          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
-            GITHUB_ACTIONS=false bun turbo test --concurrency=3
+            GITHUB_ACTIONS=false bun turbo test
            exit 0
          fi
-          GITHUB_ACTIONS=false bun turbo test --affected --concurrency=3
+          GITHUB_ACTIONS=false bun turbo test --affected
        env:
          OPENCODE_EXPERIMENTAL_DISABLE_FILEWATCHER: ${{ runner.os == 'Windows' && 'true' || 'false' }}
          TURBO_SCM_BASE: ${{ github.event_name == 'pull_request' && format('{0}^1', github.sha) || github.event.before }}
@@ -32,7 +32,7 @@
    },
    "packages/ai": {
      "name": "@opencode/ai",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@aws-sdk/credential-providers": "3.1057.0",
        "@opencode/schema": "workspace:*",
@@ -54,7 +54,7 @@
    },
    "packages/app": {
      "name": "@opencode/app",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@corvu/drawer": "catalog:",
        "@dnd-kit/abstract": "0.5.0",
@@ -111,7 +111,7 @@
    },
    "packages/cli": {
      "name": "@opencode/cli",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "bin": {
        "opencode2": "./bin/opencode2.cjs",
      },
@@ -175,7 +175,7 @@
    },
    "packages/client": {
      "name": "@opencode/client",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@opencode/protocol": "workspace:*",
        "@opencode/schema": "workspace:*",
@@ -201,7 +201,7 @@
    },
    "packages/codemode": {
      "name": "@opencode/codemode",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "acorn": "8.15.0",
        "effect": "catalog:",
@@ -214,7 +214,7 @@
    },
    "packages/console/app": {
      "name": "@opencode/console-app",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@cloudflare/vite-plugin": "1.15.2",
        "@ibm/plex": "6.4.1",
@@ -250,7 +250,7 @@
    },
    "packages/console/core": {
      "name": "@opencode/console-core",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@aws-sdk/client-sts": "3.782.0",
        "@jsx-email/render": "1.1.1",
@@ -277,7 +277,7 @@
    },
    "packages/console/function": {
      "name": "@opencode/console-function",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@openauthjs/openauth": "0.0.0-20250322224806",
        "@opencode/console-core": "workspace:*",
@@ -294,7 +294,7 @@
    },
    "packages/console/mail": {
      "name": "@opencode/console-mail",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@jsx-email/all": "2.2.3",
        "@jsx-email/cli": "1.4.3",
@@ -318,7 +318,7 @@
    },
    "packages/console/support": {
      "name": "@opencode/console-support",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@cloudflare/vite-plugin": "1.15.2",
        "@opencode/console-core": "workspace:*",
@@ -338,7 +338,7 @@
    },
    "packages/core": {
      "name": "@opencode/core",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@ai-sdk/cohere": "3.0.27",
        "@ai-sdk/gateway": "3.0.104",
@@ -406,10 +406,10 @@
    },
    "packages/desktop": {
      "name": "@opencode/desktop",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@zip.js/zip.js": "2.7.62",
-        "electron-context-menu": "5.0.0",
+        "electron-context-menu": "4.1.2",
        "electron-log": "^5",
        "electron-updater": "6.8.9",
        "lighthouse": "13.4.1",
@@ -436,7 +436,7 @@
        "drizzle-kit": "catalog:",
        "drizzle-orm": "catalog:",
        "effect": "catalog:",
-        "electron": "44.4.3",
+        "electron": "42.10.1",
        "electron-builder": "26.15.7",
        "electron-vite": "6.0.0-beta.1",
        "puppeteer-core": "25.9.0",
@@ -455,7 +455,7 @@
    },
    "packages/enterprise": {
      "name": "@opencode/enterprise",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@hono/standard-validator": "catalog:",
        "@opencode-ai/sdk": "1.18.21",
@@ -492,7 +492,7 @@
    },
    "packages/function": {
      "name": "@opencode/function",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@octokit/auth-app": "8.0.1",
        "@octokit/rest": "catalog:",
@@ -508,7 +508,7 @@
    },
    "packages/http-recorder": {
      "name": "@opencode/http-recorder",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@effect/platform-node-shared": "4.0.0-rc.112",
      },
@@ -527,7 +527,7 @@
    },
    "packages/httpapi-codegen": {
      "name": "@opencode/httpapi-codegen",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "effect": "catalog:",
        "prettier": "3.6.2",
@@ -540,7 +540,7 @@
    },
    "packages/latex": {
      "name": "@opencode/latex",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@opencode/plugin": "workspace:*",
        "@opentui/core": "catalog:",
@@ -554,7 +554,7 @@
    },
    "packages/merman": {
      "name": "@opencode/merman",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@opencode/plugin": "workspace:*",
        "@opentui/core": "catalog:",
@@ -569,7 +569,7 @@
    },
    "packages/plugin": {
      "name": "@opencode/plugin",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@ai-sdk/provider": "3.0.8",
        "@opencode/ai": "workspace:*",
@@ -608,7 +608,7 @@
    },
    "packages/plugin-browser": {
      "name": "@opencode/plugin-browser",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@opencode/plugin": "workspace:*",
        "@opencode/schema": "workspace:*",
@@ -638,7 +638,7 @@
    },
    "packages/protocol": {
      "name": "@opencode/protocol",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@opencode/schema": "workspace:*",
        "effect": "catalog:",
@@ -653,7 +653,7 @@
    },
    "packages/schema": {
      "name": "@opencode/schema",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@standard-schema/spec": "catalog:",
        "effect": "catalog:",
@@ -677,7 +677,7 @@
    },
    "packages/sdk": {
      "name": "@opencode/sdk",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@opencode/client": "workspace:*",
        "@opencode/core": "workspace:*",
@@ -698,7 +698,7 @@
    },
    "packages/server": {
      "name": "@opencode/server",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@effect/platform-node": "catalog:",
        "@effect/platform-node-shared": "catalog:",
@@ -720,7 +720,7 @@
    },
    "packages/session-ui": {
      "name": "@opencode/session-ui",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@kobalte/core": "catalog:",
        "@opencode/client": "workspace:*",
@@ -755,7 +755,7 @@
    },
    "packages/simulation": {
      "name": "@opencode/simulation",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@opencode/ai": "workspace:*",
        "@opencode/core": "workspace:*",
@@ -775,7 +775,7 @@
    },
    "packages/stats/app": {
      "name": "@opencode/stats-app",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@ibm/plex": "6.4.1",
        "@kobalte/core": "catalog:",
@@ -809,7 +809,7 @@
    },
    "packages/stats/core": {
      "name": "@opencode/stats-core",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@aws-sdk/client-athena": "3.933.0",
        "@planetscale/database": "1.19.0",
@@ -828,7 +828,7 @@
    },
    "packages/stats/server": {
      "name": "@opencode/stats-server",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@aws-sdk/client-firehose": "3.933.0",
        "@effect/platform-node": "catalog:",
@@ -874,7 +874,7 @@
    },
    "packages/theme": {
      "name": "@opencode/theme",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@opentui/core": "catalog:",
        "effect": "catalog:",
@@ -888,7 +888,7 @@
    },
    "packages/tui": {
      "name": "@opencode/tui",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@opencode/client": "workspace:*",
        "@opencode/core": "workspace:*",
@@ -923,7 +923,7 @@
    },
    "packages/ui": {
      "name": "@opencode/ui",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@kobalte/core": "catalog:",
        "@pierre/diffs": "catalog:",
@@ -958,7 +958,7 @@
    },
    "packages/util": {
      "name": "@opencode/util",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@effect/opentelemetry": "catalog:",
        "@effect/platform-node": "catalog:",
@@ -991,7 +991,7 @@
    },
    "packages/web": {
      "name": "@opencode/web",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "@astrojs/cloudflare": "12.6.3",
        "@astrojs/markdown-remark": "6.3.1",
@@ -1032,7 +1032,7 @@
    },
    "services/update": {
      "name": "@opencode/update",
-      "version": "2.0.12",
+      "version": "2.0.10",
      "dependencies": {
        "jose": "6.0.11",
        "semver": "catalog:",
@@ -3880,13 +3880,13 @@

    "ejs": ["ejs@3.1.10", "", { "dependencies": { "jake": "^10.8.5" }, "bin": { "ejs": "bin/cli.js" } }, "sha512-UeJmFfOrAQS8OJWPZ4qtgHyWExa088/MtK5UEyoJGFH67cDEXkZSviOiKRCZ4Xij0zxI3JECgYs3oKx+AizQBA=="],

-    "electron": ["electron@44.4.3", "", { "dependencies": { "@electron-internal/extract-zip": "^1.0.1", "@electron/get": "^5.0.0", "@types/node": "^24.9.0" }, "bin": { "electron": "cli.js", "install-electron": "install.js" } }, "sha512-LTpSFTB40qVCXIX5xMo+cgHI/Jjkbjw7VpB26PccEbroqOn72LBukeaDwPVo1fBYzSzs0c9iPuAucFCO7Tw81Q=="],
+    "electron": ["electron@42.10.1", "", { "dependencies": { "@electron-internal/extract-zip": "^1.0.1", "@electron/get": "^5.0.0", "@types/node": "^24.9.0" }, "bin": { "electron": "cli.js", "install-electron": "install.js" } }, "sha512-ITc1HPeoDzsxCCaH6MFsN67Nq2nUiJf5N9pBWxzhUpFfKJF0IwiAkKT3emg1lPbvC4OfFE+Cdwe4vhgdOZ1YKg=="],

    "electron-builder": ["electron-builder@26.15.7", "", { "dependencies": { "app-builder-lib": "26.15.7", "builder-util": "26.15.3", "builder-util-runtime": "9.7.0", "chalk": "^4.1.2", "ci-info": "^4.2.0", "dmg-builder": "26.15.7", "fs-extra": "^10.1.0", "lazy-val": "^1.0.5", "simple-update-notifier": "2.0.0", "yargs": "^17.6.2" }, "bin": { "electron-builder": "./cli.js", "install-app-deps": "./install-app-deps.js" } }, "sha512-DBpaNzxsPs1BvEblzFoNriSbzsBqDCy/gseIngeEhYzQG1IxfB7Hvc2tBBVmpWE2BTQGP9J1RrAvDT+Vc/uAxg=="],

    "electron-builder-squirrel-windows": ["electron-builder-squirrel-windows@26.15.7", "", { "dependencies": { "app-builder-lib": "26.15.7", "builder-util": "26.15.3", "electron-winstaller": "5.4.0" } }, "sha512-B4uvn2NzFSuf084udWqugludFull6CRJiWe2dLzMnZLl6G5hdAGk0fsBMGlBSpKjvQCJn8IPc+S7OnJ+GXqwLA=="],

-    "electron-context-menu": ["electron-context-menu@5.0.0", "", { "dependencies": { "cli-truncate": "^4.0.0", "electron-dl": "^4.0.0", "electron-is-dev": "^3.0.1" } }, "sha512-rgFpRtwY0/rhsRCoz9rE6VM4WueEsLbIpca7ucOhERVrbGB2dQrxa9xwBNLplU54jRgPuv6nTEbxoplE5bzy2A=="],
+    "electron-context-menu": ["electron-context-menu@4.1.2", "", { "dependencies": { "cli-truncate": "^4.0.0", "electron-dl": "^4.0.0", "electron-is-dev": "^3.0.1" } }, "sha512-9xYTUV0oRqKL50N9W71IrXNdVRB0LuBp3R1zkUdUc2wfIa2/QZwYYj5RLuO7Tn7ZSLVIaO3X6u+EIBK+cBvzrQ=="],

    "electron-dl": ["electron-dl@4.0.0", "", { "dependencies": { "ext-name": "^5.0.0", "pupa": "^3.1.0", "unused-filename": "^4.0.1" } }, "sha512-USiB9816d2JzKv0LiSbreRfTg5lDk3lWh0vlx/gugCO92ZIJkHVH0UM18EHvKeadErP6Xn4yiTphWzYfbA2Ong=="],

@@ -1,8 +1,8 @@
 {
  "nodeModules": {
-    "x86_64-linux": "sha256-/jah4P2a0aGJNJ0aMdlFEbGHAXx33lqxHbc7UmpLFDg=",
-    "aarch64-linux": "sha256-L3SoZ24qNXicsE2FK6LATQjOmjPxY679RjugrUyO/1Y=",
-    "aarch64-darwin": "sha256-pI9NT8KWUPi+JCk6DYMqIAYmBqTbi13uL4VdNV3WS6Y=",
-    "x86_64-darwin": "sha256-rMAGhTTz46KA5Ya7E5J0af7Bn1QzTDhTaNfNJm8qfsw="
+    "x86_64-linux": "sha256-8mOzCscBAuogG4tm8CroqjTX5E5yzCvTobbhKvxQP0U=",
+    "aarch64-linux": "sha256-drrRSpzxC8bfaTXBpOyaN0QAyBVV7WJzm0NstJ+8sAE=",
+    "aarch64-darwin": "sha256-YY5A/zxLPONvgnI+DZlzcD2K5Q9PIw4F2YbDxKbT4UU=",
+    "x86_64-darwin": "sha256-/c/Ew4onA+9+l6GRKXz3zWq3QFESM7j5RyGLCWRPQFw="
  }
 }
@@ -2,7 +2,7 @@
  "$schema": "https://json.schemastore.org/package.json",
  "name": "opencode",
  "description": "AI-powered development tool",
-  "version": "2.0.12",
+  "version": "2.0.10",
  "private": true,
  "type": "module",
  "packageManager": "bun@1.4.2",
@@ -29,47 +29,6 @@ await Effect.runPromise(program.pipe(Effect.provide(llmLayer)))

 Run `LLMClient.stream(request)` instead of `generate` when you want incremental `LLMEvent`s. The event stream is provider-neutral — same shape across OpenAI Chat, OpenAI Responses, Anthropic Messages, Gemini, Bedrock Converse, and any OpenAI-compatible deployment.

-## Experimental evaluation
-
-Evaluation models compare shared state with typed choice, score, and boolean questions. The API is
-isolated under an experimental entrypoint and provider namespace while the contract evolves:
-
-```ts
-import { Effect } from "effect"
-import { Evaluation, EvaluationClient } from "@opencode/ai/experimental"
-import { TypeSafeAI } from "@opencode/ai/providers"
-
-const model = TypeSafeAI.configure().experimental.evaluation("jev-latest")
-
-const program = Evaluation.evaluate({
-  model,
-  state: "I was charged twice. Please refund the duplicate payment.",
-  questions: {
-    department: {
-      type: "choice",
-      instructions: "Which team should handle this?",
-      criteria: { billing: "Payments and refunds", technical: "Bugs and outages" },
-    },
-    urgency: {
-      type: "score",
-      instructions: "How urgent is this?",
-      criteria: ["Can wait", "Needs prompt attention", "Blocking revenue"],
-    },
-    refund: { type: "boolean", instructions: "Is the customer asking for a refund?" },
-  },
-})
-
-const response = await Effect.runPromise(program.pipe(Effect.provide(EvaluationClient.fetchLayer)))
-
-console.log(response.answers.department.choice)
-console.log(response.answers.refund.probability)
-```
-
-`TypeSafeAI` reads `TYPESAFE_API_KEY`. `OpenCodeZen` exposes the same selector and reads
-`OPENCODE_API_KEY`. The common API uses `boolean`; System One routes lower it to native `noul`.
-Choice and score confidence plus score legends remain available in provider metadata, and the
-provider's rounded probabilities are returned unchanged.
-
 ## Alibaba Cloud Model Studio

 `Alibaba` provides standard Model Studio inference. Configure a region explicitly, then select
@@ -1,6 +1,6 @@
 {
  "$schema": "https://json.schemastore.org/package.json",
-  "version": "2.0.12",
+  "version": "2.0.10",
  "name": "@opencode/ai",
  "type": "module",
  "license": "MIT",
@@ -1,29 +0,0 @@
-export { EvaluationClient } from "./experimental/evaluation-client.js"
-export {
-  BooleanAnswer,
-  BooleanQuestion,
-  ChoiceAnswer,
-  ChoiceQuestion,
-  Evaluation,
-  EvaluationAnswer,
-  EvaluationInput,
-  EvaluationModel,
-  EvaluationModelSchema,
-  EvaluationQuestion,
-  EvaluationRequest,
-  EvaluationResponse,
-  EvaluationRounding,
-  ScoreAnswer,
-  ScoreQuestion,
-} from "./experimental/evaluation.js"
-export type {
-  AnswerFor,
-  AnswersFor,
-  EvaluationModelOptions,
-  EvaluationOptions,
-  EvaluationQuestions,
-  EvaluationRequestFor,
-  EvaluationRequestInput,
-  EvaluationResponseFor,
-  EvaluationRoute,
-} from "./experimental/evaluation.js"
@@ -1,54 +0,0 @@
-import { Context, Effect, Layer } from "effect"
-import { RequestExecutor } from "../route/executor.js"
-import { mergeHttpOptions, type AIError } from "../schema/index.js"
-import { sanitizeSurrogates } from "../utils/sanitize.js"
-import {
-  type EvaluationOptions,
-  type EvaluationQuestions,
-  type EvaluationRequestFor,
-  type EvaluationResponseFor,
-} from "./evaluation.js"
-
-export type Execute = RequestExecutor.Interface["execute"]
-
-export interface Interface {
-  readonly evaluate: <Options extends EvaluationOptions, const Questions extends EvaluationQuestions>(
-    request: EvaluationRequestFor<Options, Questions>,
-  ) => Effect.Effect<EvaluationResponseFor<Questions>, AIError>
-}
-
-export class Service extends Context.Service<Service, Interface>()("@opencode/AI/Experimental/EvaluationClient") {}
-
-export const evaluate = <Options extends EvaluationOptions, const Questions extends EvaluationQuestions>(
-  request: EvaluationRequestFor<Options, Questions>,
-): Effect.Effect<EvaluationResponseFor<Questions>, AIError, Service> =>
-  Effect.flatMap(Service, (client) => client.evaluate(request))
-
-export const layer: Layer.Layer<Service, never, RequestExecutor.Service> = Layer.effect(
-  Service,
-  Effect.gen(function* () {
-    const executor = yield* RequestExecutor.Service
-    return Service.of({
-      evaluate: (request) =>
-        request.model.route.evaluate(
-          {
-            ...sanitizeSurrogates({
-              ...request,
-              model: undefined,
-              http: mergeHttpOptions(request.model.http, request.http),
-            }),
-            model: request.model,
-          },
-          executor.execute,
-        ),
-    })
-  }),
-)
-export const fetchLayer = layer.pipe(Layer.provide(RequestExecutor.fetchLayer))
-
-export const EvaluationClient = {
-  Service,
-  layer,
-  fetchLayer,
-  evaluate,
-} as const
@@ -1,245 +0,0 @@
-import { Effect, Schema } from "effect"
-import {
-  AIError,
-  HttpOptions,
-  InvalidRequestError,
-  ModelID,
-  ProviderID,
-  ProviderMetadata,
-  Usage,
-} from "../schema/index.js"
-import { EvaluationClient, Service, type Execute } from "./evaluation-client.js"
-
-export const EvaluationInput = Schema.Union([Schema.String, Schema.JsonObject, Schema.Array(Schema.Json)])
-export type EvaluationInput = Schema.Schema.Type<typeof EvaluationInput>
-
-const EvaluationCriterion = Schema.NullOr(EvaluationInput)
-const ChoiceCriteria = Schema.Record(Schema.String, EvaluationCriterion).pipe(
-  Schema.refine((x): x is typeof x => Object.keys(x).length > 0, {
-    message: "Choice criteria must be a nonempty option map",
-  }),
-)
-
-export const ChoiceQuestion = Schema.Struct({
-  type: Schema.Literal("choice"),
-  instructions: EvaluationInput,
-  criteria: ChoiceCriteria,
-})
-export type ChoiceQuestion = Schema.Schema.Type<typeof ChoiceQuestion>
-
-export const ScoreQuestion = Schema.Struct({
-  type: Schema.Literal("score"),
-  instructions: EvaluationInput,
-  criteria: Schema.Array(EvaluationCriterion).check(Schema.isMinLength(2)),
-})
-export type ScoreQuestion = Schema.Schema.Type<typeof ScoreQuestion>
-
-export const BooleanQuestion = Schema.Struct({
-  type: Schema.Literal("boolean"),
-  instructions: EvaluationInput,
-  criteria: Schema.optional(
-    Schema.Struct({
-      true: Schema.optional(EvaluationCriterion),
-      false: Schema.optional(EvaluationCriterion),
-    }),
-  ),
-})
-export type BooleanQuestion = Schema.Schema.Type<typeof BooleanQuestion>
-
-export const EvaluationQuestion = Schema.Union([ChoiceQuestion, ScoreQuestion, BooleanQuestion]).pipe(
-  Schema.toTaggedUnion("type"),
-)
-export type EvaluationQuestion = Schema.Schema.Type<typeof EvaluationQuestion>
-export type EvaluationQuestions = Readonly<Record<string, EvaluationQuestion>>
-const EvaluationQuestions = Schema.Record(Schema.String, EvaluationQuestion).pipe(
-  Schema.refine((x): x is typeof x => Object.keys(x).length > 0, {
-    message: "Evaluation questions must be a nonempty map",
-  }),
-)
-
-const Probability = Schema.Number.check(Schema.isBetween({ minimum: 0, maximum: 1 }))
-
-export const ChoiceAnswer = Schema.Struct({
-  type: Schema.Literal("choice"),
-  choice: Schema.String,
-  probabilities: Schema.optional(Schema.Record(Schema.String, Probability)),
-})
-export type ChoiceAnswer = Schema.Schema.Type<typeof ChoiceAnswer>
-
-export const ScoreAnswer = Schema.Struct({
-  type: Schema.Literal("score"),
-  score: Schema.Number,
-  probabilities: Schema.optional(Schema.Record(Schema.String, Probability)),
-})
-export type ScoreAnswer = Schema.Schema.Type<typeof ScoreAnswer>
-
-export const BooleanAnswer = Schema.Struct({
-  type: Schema.Literal("boolean"),
-  probability: Probability,
-})
-export type BooleanAnswer = Schema.Schema.Type<typeof BooleanAnswer>
-
-export const EvaluationAnswer = Schema.Union([ChoiceAnswer, ScoreAnswer, BooleanAnswer]).pipe(
-  Schema.toTaggedUnion("type"),
-)
-export type EvaluationAnswer = Schema.Schema.Type<typeof EvaluationAnswer>
-
-export type AnswerFor<Question extends EvaluationQuestion> = Question extends {
-  readonly type: "choice"
-  readonly criteria: infer Criteria
-}
-  ? {
-      readonly type: "choice"
-      readonly choice: Extract<keyof Criteria, string>
-      readonly probabilities?: Readonly<Record<Extract<keyof Criteria, string>, number>>
-    }
-  : Question extends { readonly type: "score" }
-    ? ScoreAnswer
-    : BooleanAnswer
-
-export type AnswersFor<Questions extends EvaluationQuestions> = {
-  readonly [ID in keyof Questions]: AnswerFor<Questions[ID]>
-}
-
-export type EvaluationOptions = Record<string, unknown>
-
-export interface EvaluationRoute<Options extends EvaluationOptions = EvaluationOptions> {
-  readonly id: string
-  readonly evaluate: <const Questions extends EvaluationQuestions>(
-    request: EvaluationRequestFor<Options, Questions>,
-    execute: Execute,
-  ) => Effect.Effect<EvaluationResponseFor<Questions>, AIError>
-}
-
-export class EvaluationModel<Options extends EvaluationOptions = EvaluationOptions> {
-  declare protected readonly _Options: (options: Options) => Options
-  readonly id: ModelID
-  readonly provider: ProviderID
-  readonly route: EvaluationRoute<Options>
-  readonly http?: HttpOptions
-
-  constructor(input: EvaluationModel.Input<Options>) {
-    this.id = input.id
-    this.provider = input.provider
-    this.route = input.route
-    this.http = input.http
-  }
-
-  static make<Options extends EvaluationOptions = EvaluationOptions>(input: EvaluationModel.MakeInput<Options>) {
-    return new EvaluationModel<Options>({
-      id: ModelID.make(input.id),
-      provider: ProviderID.make(input.provider),
-      route: input.route,
-      http: input.http,
-    })
-  }
-}
-
-export namespace EvaluationModel {
-  export interface Input<Options extends EvaluationOptions = EvaluationOptions> {
-    readonly id: ModelID
-    readonly provider: ProviderID
-    readonly route: EvaluationRoute<Options>
-    readonly http?: HttpOptions
-  }
-
-  export interface MakeInput<Options extends EvaluationOptions = EvaluationOptions>
-    extends Omit<Input<Options>, "id" | "provider"> {
-    readonly id: string | ModelID
-    readonly provider: string | ProviderID
-  }
-}
-
-export const EvaluationModelSchema = Schema.declare(
-  (value): value is EvaluationModel => value instanceof EvaluationModel,
-  {
-    expected: "Evaluation.Model",
-  },
-)
-
-export class EvaluationRequest extends Schema.Class<EvaluationRequest>("Evaluation.Request")({
-  model: EvaluationModelSchema,
-  state: EvaluationInput,
-  questions: EvaluationQuestions,
-  options: Schema.optional(Schema.Record(Schema.String, Schema.Unknown)),
-  http: Schema.optional(HttpOptions),
-}) {
-  declare protected readonly _EvaluationRequest: void
-}
-
-export type EvaluationModelOptions<Model> = Model extends EvaluationModel<infer Options> ? Options : never
-
-export type EvaluationRequestFor<
-  Options extends EvaluationOptions = EvaluationOptions,
-  Questions extends EvaluationQuestions = EvaluationQuestions,
-> = Omit<EvaluationRequest, "model" | "questions" | "options"> & {
-  readonly model: EvaluationModel<Options>
-  readonly questions: Questions
-  readonly options?: Options
-}
-
-export type EvaluationRequestInput<
-  Model extends object = EvaluationModel,
-  Questions extends EvaluationQuestions = EvaluationQuestions,
-> = Omit<ConstructorParameters<typeof EvaluationRequest>[0], "model" | "questions" | "options" | "http"> & {
-  readonly model: Model
-  readonly questions: Questions
-  readonly options?: NoInfer<EvaluationModelOptions<Model>>
-  readonly http?: HttpOptions.Input
-} & (Model extends EvaluationModel<EvaluationModelOptions<Model>> ? unknown : never)
-
-export class EvaluationRounding extends Schema.Class<EvaluationRounding>("Evaluation.Rounding")({
-  probabilityDecimals: Schema.optional(Schema.Int),
-  scoreDecimals: Schema.optional(Schema.Int),
-}) {}
-
-export class EvaluationResponse extends Schema.Class<EvaluationResponse>("Evaluation.Response")({
-  model: ModelID,
-  answers: Schema.Record(Schema.String, EvaluationAnswer),
-  usage: Schema.optional(Usage),
-  rounding: Schema.optional(EvaluationRounding),
-  providerMetadata: Schema.optional(ProviderMetadata),
-}) {}
-
-export type EvaluationResponseFor<Questions extends EvaluationQuestions> = Omit<EvaluationResponse, "answers"> & {
-  readonly answers: AnswersFor<Questions>
-}
-
-export function request<const Model extends object, const Questions extends EvaluationQuestions>(
-  input: EvaluationRequestInput<Model, Questions>,
-): EvaluationRequestFor<EvaluationModelOptions<Model>, Questions>
-export function request(input: EvaluationRequest): EvaluationRequest
-export function request(input: EvaluationRequest | EvaluationRequestInput) {
-  if (input instanceof EvaluationRequest) return input
-  return new EvaluationRequest({
-    ...input,
-    model: input.model as unknown as EvaluationModel,
-    http: input.http === undefined ? undefined : HttpOptions.make(input.http),
-  })
-}
-
-export function evaluate<const Model extends object, const Questions extends EvaluationQuestions>(
-  input: EvaluationRequestInput<Model, Questions>,
-): Effect.Effect<EvaluationResponseFor<Questions>, AIError, Service>
-export function evaluate(input: EvaluationRequest): Effect.Effect<EvaluationResponse, AIError, Service>
-export function evaluate(input: EvaluationRequest | EvaluationRequestInput) {
-  return Effect.try({
-    try: () => (input instanceof EvaluationRequest ? input : request(input)),
-    catch: (cause) =>
-      new AIError({
-        reason: new InvalidRequestError({
-          message: cause instanceof Error ? cause.message : String(cause),
-          cause,
-        }),
-      }),
-  }).pipe(
-    Effect.flatMap((request) =>
-      EvaluationClient.evaluate(request as EvaluationRequestFor<EvaluationOptions, EvaluationQuestions>),
-    ),
-  )
-}
-
-export const Evaluation = {
-  request,
-  evaluate,
-} as const
@@ -1,222 +0,0 @@
-import { Effect, Schema } from "effect"
-import { Headers, HttpClientRequest } from "effect/unstable/http"
-import {
-  BooleanAnswer,
-  ChoiceAnswer,
-  ChoiceQuestion,
-  EvaluationInput,
-  EvaluationModel,
-  EvaluationResponse,
-  EvaluationRounding,
-  ScoreAnswer,
-  ScoreQuestion,
-  type EvaluationResponseFor,
-  type EvaluationRoute,
-} from "./evaluation.js"
-import { Auth, type Definition as AuthDefinition } from "../route/auth.js"
-import {
-  AIError,
-  HttpContext,
-  HttpOptions,
-  InvalidProviderOutputError,
-  InvalidRequestError,
-  ModelID,
-  Usage,
-  mergeJsonRecords,
-} from "../schema/index.js"
-
-const Noul = Schema.Struct({
-  type: Schema.Literal("noul"),
-  instructions: EvaluationInput,
-  criteria: Schema.optional(
-    Schema.Struct({
-      true: Schema.optional(Schema.NullOr(EvaluationInput)),
-      false: Schema.optional(Schema.NullOr(EvaluationInput)),
-    }),
-  ),
-})
-const Question = Schema.Union([
-  ChoiceQuestion.pipe(
-    Schema.refine((x): x is typeof x => Object.keys(x.criteria).length <= 255, {
-      message: "System One Choice questions support at most 255 options",
-    }),
-  ),
-  ScoreQuestion.pipe(
-    Schema.refine((x): x is typeof x => x.criteria.length <= 10, {
-      message: "System One Score questions support at most 10 levels",
-    }),
-  ),
-  Noul,
-])
-const Request = Schema.StructWithRest(
-  Schema.Struct({
-    model: Schema.String,
-    state: EvaluationInput,
-    questions: Schema.Record(Schema.String, Question),
-  }),
-  [Schema.Record(Schema.String, Schema.Any)],
-)
-
-const Probability = Schema.Number.check(Schema.isBetween({ minimum: 0, maximum: 1 }))
-const NoulAnswer = Schema.Struct({ type: Schema.Literal("noul"), noul: Probability })
-const Choice = Schema.Struct({
-  type: Schema.Literal("choice"),
-  choice: Schema.String,
-  probabilities: Schema.Record(Schema.String, Probability),
-  confidence: Schema.optional(Probability),
-})
-const Score = Schema.Struct({
-  type: Schema.Literal("score"),
-  score: Schema.Number,
-  probabilities: Schema.Record(Schema.String, Probability),
-  legend: Schema.optional(Schema.Record(Schema.String, Schema.Json)),
-  confidence: Schema.optional(Probability),
-})
-const NativeUsage = Schema.Struct({
-  input_tokens: Schema.optional(Schema.Number),
-  output_tokens: Schema.optional(Schema.Number),
-})
-
-const encode = Schema.encodeUnknownEffect(Schema.fromJsonString(Request))
-const exact = (x: Readonly<Record<string, unknown>>, keys: ReadonlyArray<string>) =>
-  Object.keys(x).length === keys.length && keys.every((key) => Object.hasOwn(x, key))
-
-export interface ModelInput {
-  readonly id: string | ModelID
-  readonly provider: string
-  readonly providerMetadataKey: string
-  readonly auth: AuthDefinition
-  readonly baseURL: string
-  readonly headers?: Record<string, string>
-  readonly http?: HttpOptions
-}
-
-export const model = (cfg: ModelInput) => {
-  const route: EvaluationRoute = {
-    id: "system-one",
-    evaluate: (req, send) =>
-      Effect.gen(function* () {
-        const url = new URL(`${cfg.baseURL.replace(/\/$/, "")}/systemone`)
-        Object.entries(req.http?.query ?? {}).forEach(([key, value]) => url.searchParams.set(key, value))
-        const body = yield* encode({
-          ...mergeJsonRecords(req.options, req.http?.body),
-          model: req.model.id,
-          state: req.state,
-          questions: Object.fromEntries(
-            Object.entries(req.questions).map(([id, x]) => [id, x.type === "boolean" ? { ...x, type: "noul" } : x]),
-          ),
-        }).pipe(
-          Effect.mapError(
-            (cause) => new AIError({ reason: new InvalidRequestError({ message: cause.message, cause }) }),
-          ),
-        )
-        const headers = yield* Auth.toEffect(cfg.auth)({
-          request: req,
-          method: "POST",
-          url: url.toString(),
-          body,
-          headers: Headers.fromInput({ ...cfg.headers, ...req.http?.headers }),
-        })
-        const res = yield* send(
-          HttpClientRequest.post(url).pipe(
-            HttpClientRequest.setHeaders(headers),
-            HttpClientRequest.bodyText(body, "application/json"),
-          ),
-        )
-        const http = new HttpContext({ url: res.request.url, status: res.status, headers: res.headers })
-        const fail = (message: string, cause: unknown, body?: string) =>
-          new AIError({ reason: new InvalidProviderOutputError({ route: route.id, message, body, http, cause }) })
-        const text = yield* res.text.pipe(
-          Effect.mapError((cause) => fail("Failed to read the System One response", cause)),
-        )
-        const entries = Object.entries(req.questions)
-        const output = Schema.Struct({
-          model: Schema.String,
-          answers: Schema.Struct(
-            Object.fromEntries(
-              entries.map(([id, question]) => {
-                if (question.type === "boolean") return [id, NoulAnswer]
-                if (question.type === "choice") {
-                  const keys = Object.keys(question.criteria)
-                  return [
-                    id,
-                    Choice.pipe(
-                      Schema.refine(
-                        (x): x is typeof x =>
-                          Object.hasOwn(question.criteria, x.choice) && exact(x.probabilities, keys),
-                        { message: `Question "${id}" returned an invalid choice answer` },
-                      ),
-                    ),
-                  ]
-                }
-                const keys = question.criteria.map((_, index) => String(index))
-                return [
-                  id,
-                  Score.pipe(
-                    Schema.refine(
-                      (x): x is typeof x =>
-                        x.score >= 0 && x.score <= question.criteria.length - 1 && exact(x.probabilities, keys),
-                      { message: `Question "${id}" returned an invalid score answer` },
-                    ),
-                  ),
-                ]
-              }),
-            ) as Record<string, Schema.Codec<unknown>>,
-          ),
-          usage: Schema.optional(NativeUsage),
-        })
-        const data = yield* Schema.decodeUnknownEffect(Schema.fromJsonString(output))(text).pipe(
-          Effect.mapError((cause) => fail("System One returned an invalid response", cause, text)),
-        )
-
-        const confidence: Record<string, number> = {}
-        const legend: Record<string, Record<string, Schema.Json>> = {}
-        const answers = Object.fromEntries(
-          entries.map(([id, question]) => {
-            const answer = data.answers[id]
-            if (question.type === "boolean")
-              return [
-                id,
-                { type: "boolean", probability: (answer as typeof NoulAnswer.Type).noul } satisfies BooleanAnswer,
-              ]
-            if (question.type === "choice") {
-              const value = answer as typeof Choice.Type
-              if (value.confidence !== undefined) confidence[id] = value.confidence
-              return [
-                id,
-                { type: "choice", choice: value.choice, probabilities: value.probabilities } satisfies ChoiceAnswer,
-              ]
-            }
-            const value = answer as typeof Score.Type
-            if (value.confidence !== undefined) confidence[id] = value.confidence
-            if (value.legend !== undefined) legend[id] = value.legend
-            return [id, { type: "score", score: value.score, probabilities: value.probabilities } satisfies ScoreAnswer]
-          }),
-        )
-        const meta = {
-          ...(Object.keys(confidence).length === 0 ? {} : { confidence }),
-          ...(Object.keys(legend).length === 0 ? {} : { legend }),
-        }
-        return new EvaluationResponse({
-          model: ModelID.make(data.model),
-          answers,
-          usage: data.usage
-            ? new Usage({
-                inputTokens: data.usage.input_tokens,
-                outputTokens: data.usage.output_tokens,
-                totalTokens:
-                  data.usage.input_tokens === undefined && data.usage.output_tokens === undefined
-                    ? undefined
-                    : (data.usage.input_tokens ?? 0) + (data.usage.output_tokens ?? 0),
-                providerMetadata: { [cfg.providerMetadataKey]: data.usage },
-              })
-            : undefined,
-          rounding: new EvaluationRounding({ probabilityDecimals: 2, scoreDecimals: 2 }),
-          providerMetadata: Object.keys(meta).length === 0 ? undefined : { [cfg.providerMetadataKey]: meta },
-        }) as EvaluationResponseFor<typeof req.questions>
-      }),
-  }
-  return EvaluationModel.make({ id: cfg.id, provider: cfg.provider, route, http: cfg.http })
-}
-
-export const SystemOne = { model } as const
@@ -38,13 +38,23 @@ export type Settings = ProviderPackage.Settings &

 const fromRequest = Effect.fn("GoogleVertex.fromRequest")(function* (request: LLMRequest) {
  const { serviceTier: _, ...body } = yield* Gemini.protocol.body.from(request)
+  // Vertex's native REST schema rejects `id` on FunctionCall/FunctionResponse parts with HTTP 400,
+  // unlike AI Studio, so history minted there cannot be lowered verbatim.
+  const contents = body.contents.map((content) => ({
+    ...content,
+    parts: (content.parts ?? []).map((part) => {
+      if ("functionCall" in part) return { ...part, functionCall: { ...part.functionCall, id: undefined } }
+      if ("functionResponse" in part) return { ...part, functionResponse: { ...part.functionResponse, id: undefined } }
+      return part
+    }),
+  }))
  const value = request.providerOptions?.labels
  const labels = ProviderShared.isRecord(value)
    ? Object.fromEntries(
        Object.entries(value).filter((entry): entry is [string, string] => typeof entry[1] === "string"),
      )
    : undefined
-  return { ...body, labels }
+  return { ...body, contents, labels }
 })

 const protocol = {
@@ -24,10 +24,8 @@ export * as Moonshot from "./moonshot.js"
 export * as OpenAI from "./openai.js"
 export * as OpenAICompatible from "./openai-compatible.js"
 export * as OpenAICompatibleResponses from "./openai-compatible-responses.js"
-export * as OpenCodeZen from "./opencode-zen.js"
 export * as OpenRouter from "./openrouter.js"
 export * as TogetherAI from "./togetherai.js"
-export * as TypeSafeAI from "./typesafe-ai.js"
 export * as XAI from "./xai.js"
 export * as ZAI from "./zai.js"
 export * as ZAICodingPlan from "./zai-coding-plan.js"
@@ -1,31 +0,0 @@
-import { HttpOptions, ProviderID, type ModelID } from "../schema/index.js"
-import { AuthOptions, type ProviderAuthOption } from "../route/auth-options.js"
-import { SystemOne } from "../experimental/system-one.js"
-
-export const id = ProviderID.make("opencode")
-const baseURL = "https://opencode.ai/zen/v1"
-
-export type Options = ProviderAuthOption<"optional"> & {
-  readonly baseURL?: string
-  readonly headers?: Record<string, string>
-  readonly http?: HttpOptions.Input
-}
-
-export const configure = (input: Options = {}) => {
-  const evaluation = (modelID: string | ModelID) =>
-    SystemOne.model({
-      id: modelID,
-      provider: id,
-      providerMetadataKey: "opencode",
-      auth: AuthOptions.bearer(input, "OPENCODE_API_KEY"),
-      baseURL: input.baseURL ?? baseURL,
-      headers: input.headers,
-      http: input.http === undefined ? undefined : HttpOptions.make(input.http),
-    })
-  return { id, experimental: { evaluation }, configure }
-}
-
-export const provider = configure()
-export const experimental = provider.experimental
-
-export * as OpenCodeZen from "./opencode-zen.js"
@@ -1,31 +0,0 @@
-import { HttpOptions, ProviderID, type ModelID } from "../schema/index.js"
-import { AuthOptions, type ProviderAuthOption } from "../route/auth-options.js"
-import { SystemOne } from "../experimental/system-one.js"
-
-export const id = ProviderID.make("typesafe-ai")
-const baseURL = "https://api.typesafe.ai/v1"
-
-export type Options = ProviderAuthOption<"optional"> & {
-  readonly baseURL?: string
-  readonly headers?: Record<string, string>
-  readonly http?: HttpOptions.Input
-}
-
-export const configure = (input: Options = {}) => {
-  const evaluation = (modelID: string | ModelID) =>
-    SystemOne.model({
-      id: modelID,
-      provider: id,
-      providerMetadataKey: "typesafe",
-      auth: AuthOptions.bearer(input, "TYPESAFE_API_KEY"),
-      baseURL: input.baseURL ?? baseURL,
-      headers: input.headers,
-      http: input.http === undefined ? undefined : HttpOptions.make(input.http),
-    })
-  return { id, experimental: { evaluation }, configure }
-}
-
-export const provider = configure()
-export const experimental = provider.experimental
-
-export * as TypeSafeAI from "./typesafe-ai.js"
@@ -1,173 +0,0 @@
-import { describe, expect } from "bun:test"
-import { Effect, Layer } from "effect"
-import { HttpClientRequest } from "effect/unstable/http"
-import { Evaluation, EvaluationClient } from "../src/experimental.js"
-import { OpenCodeZen, TypeSafeAI } from "../src/providers.js"
-import { it } from "./lib/effect.js"
-import { dynamicResponse } from "./lib/http.js"
-
-describe("experimental Evaluation", () => {
-  it.effect("evaluates typed questions through System One", () =>
-    Effect.gen(function* () {
-      const response = yield* Evaluation.evaluate({
-        model: TypeSafeAI.configure({
-          apiKey: "test",
-          baseURL: "https://typesafe.test/v1/",
-          headers: { "x-default": "yes" },
-          http: { body: { deployment: "test" }, query: { api: "v1" } },
-        }).experimental.evaluation("jev-latest"),
-        state: { ticket: "Please refund the duplicate charge." },
-        questions: {
-          department: {
-            type: "choice",
-            instructions: "Which team should handle this?",
-            criteria: { billing: "Payments and refunds", technical: "Bugs and outages" },
-          },
-          urgency: {
-            type: "score",
-            instructions: "How urgent is this?",
-            criteria: ["Can wait", "Needs attention", "Blocking"],
-          },
-          refund: { type: "boolean", instructions: "Is the customer asking for a refund?" },
-        },
-        options: { trace: { enabled: true } },
-        http: { body: { request_metadata: "value" }, headers: { "x-request": "yes" }, query: { trace: "1" } },
-      })
-
-      expect(response.model).toBe("jev-1.13.0")
-      expect(response.answers.department).toEqual({
-        type: "choice",
-        choice: "billing",
-        probabilities: { billing: 0.9, technical: 0.1 },
-      })
-      expect(response.answers.urgency).toEqual({
-        type: "score",
-        score: 1.2,
-        probabilities: { "0": 0, "1": 0.8, "2": 0.2 },
-      })
-      expect(response.answers.refund).toEqual({ type: "boolean", probability: 0.97 })
-      expect(response.usage?.totalTokens).toBe(36)
-      expect(response.providerMetadata).toEqual({
-        typesafe: {
-          confidence: { department: 0.8, urgency: 0.6 },
-          legend: { urgency: { "0": "Can wait", "1": "Needs attention", "2": "Blocking" } },
-        },
-      })
-    }).pipe(
-      Effect.provide(
-        EvaluationClient.layer.pipe(
-          Layer.provide(
-            dynamicResponse((input) =>
-              Effect.gen(function* () {
-                const request = yield* HttpClientRequest.toWeb(input.request).pipe(Effect.orDie)
-                expect(request.url).toBe("https://typesafe.test/v1/systemone?api=v1&trace=1")
-                expect(request.headers.get("authorization")).toBe("Bearer test")
-                expect(request.headers.get("x-default")).toBe("yes")
-                expect(request.headers.get("x-request")).toBe("yes")
-                expect(JSON.parse(input.text)).toEqual({
-                  deployment: "test",
-                  request_metadata: "value",
-                  trace: { enabled: true },
-                  model: "jev-latest",
-                  state: { ticket: "Please refund the duplicate charge." },
-                  questions: {
-                    department: {
-                      type: "choice",
-                      instructions: "Which team should handle this?",
-                      criteria: { billing: "Payments and refunds", technical: "Bugs and outages" },
-                    },
-                    urgency: {
-                      type: "score",
-                      instructions: "How urgent is this?",
-                      criteria: ["Can wait", "Needs attention", "Blocking"],
-                    },
-                    refund: { type: "noul", instructions: "Is the customer asking for a refund?" },
-                  },
-                })
-                return input.respond(
-                  JSON.stringify({
-                    model: "jev-1.13.0",
-                    answers: {
-                      department: {
-                        type: "choice",
-                        choice: "billing",
-                        probabilities: { billing: 0.9, technical: 0.1 },
-                        confidence: 0.8,
-                      },
-                      urgency: {
-                        type: "score",
-                        score: 1.2,
-                        probabilities: { "0": 0, "1": 0.8, "2": 0.2 },
-                        legend: { "0": "Can wait", "1": "Needs attention", "2": "Blocking" },
-                        confidence: 0.6,
-                      },
-                      refund: { type: "noul", noul: 0.97 },
-                    },
-                    usage: { input_tokens: 30, output_tokens: 6 },
-                  }),
-                  { headers: { "content-type": "application/json" } },
-                )
-              }),
-            ),
-          ),
-        ),
-      ),
-    ),
-  )
-
-  it.effect("configures the OpenCode Zen System One endpoint", () =>
-    Evaluation.evaluate({
-      model: OpenCodeZen.configure({ apiKey: "zen-key", baseURL: "https://zen.test/v1" }).experimental.evaluation(
-        "jev-1.13",
-      ),
-      state: "hello",
-      questions: { greeting: { type: "boolean", instructions: "Is this a greeting?" } },
-    }).pipe(
-      Effect.tap((response) =>
-        Effect.sync(() => {
-          expect(response.answers.greeting.probability).toBe(0.99)
-          expect(response.usage?.providerMetadata).toEqual({
-            opencode: { input_tokens: 10, output_tokens: 2 },
-          })
-        }),
-      ),
-      Effect.provide(
-        EvaluationClient.layer.pipe(
-          Layer.provide(
-            dynamicResponse((input) => {
-              expect(input.request.url).toBe("https://zen.test/v1/systemone")
-              expect(input.request.headers.authorization).toBe("Bearer zen-key")
-              return Effect.succeed(
-                input.respond(
-                  JSON.stringify({
-                    model: "jev-1.13.0",
-                    answers: { greeting: { type: "noul", noul: 0.99 } },
-                    usage: { input_tokens: 10, output_tokens: 2 },
-                  }),
-                  { headers: { "content-type": "application/json" } },
-                ),
-              )
-            }),
-          ),
-        ),
-      ),
-    ),
-  )
-
-  it.effect("rejects malformed questions before network I/O", () =>
-    Effect.gen(function* () {
-      const error = yield* Evaluation.evaluate({
-        model: TypeSafeAI.experimental.evaluation("jev-latest"),
-        state: "hello",
-        questions: { score: { type: "score", instructions: "How much?", criteria: ["only"] } },
-      }).pipe(Effect.flip)
-      expect(error.reason._tag).toBe("InvalidRequest")
-    }).pipe(
-      Effect.provide(
-        EvaluationClient.layer.pipe(
-          Layer.provide(dynamicResponse(() => Effect.die("invalid evaluation reached the network"))),
-        ),
-      ),
-    ),
-  )
-})
@@ -1,60 +0,0 @@
-import { Effect } from "effect"
-import { Evaluation, EvaluationClient, EvaluationModel, type EvaluationRoute } from "../src/experimental.js"
-import type { Service } from "../src/experimental/evaluation-client.js"
-import { OpenCodeZen, TypeSafeAI } from "../src/providers.js"
-
-type Requirements<T> = T extends Effect.Effect<infer _A, infer _E, infer R> ? R : never
-type Success<T> = T extends Effect.Effect<infer A, infer _E, infer _R> ? A : never
-type Equal<A, B> = [A, B] extends [B, A] ? true : false
-type Assert<T extends true> = T
-
-const model = TypeSafeAI.configure({ apiKey: "test" }).experimental.evaluation("jev-latest")
-const request = Evaluation.request({
-  model,
-  state: { ticket: "refund" },
-  questions: {
-    topic: {
-      type: "choice",
-      instructions: "Which team?",
-      criteria: { billing: null, support: { includes: ["help"] } },
-    },
-    severity: { type: "score", instructions: "How severe?", criteria: ["Low", "High"] },
-    refund: { type: "boolean", instructions: "Refund?" },
-  },
-})
-
-const result = EvaluationClient.evaluate(request)
-type Result = Success<typeof result>
-type Choice = Assert<Equal<Result["answers"]["topic"]["choice"], "billing" | "support">>
-type ClientRequirements = Assert<Equal<Requirements<typeof result>, Service>>
-void (true satisfies Choice)
-void (true satisfies ClientRequirements)
-
-Effect.gen(function* () {
-  const response = yield* Evaluation.evaluate({
-    model: OpenCodeZen.experimental.evaluation("jev-1.13"),
-    state: ["hello"],
-    questions: { greeting: { type: "boolean", instructions: "Greeting?" } },
-  })
-  response.answers.greeting.probability satisfies number
-  // @ts-expect-error Boolean answers do not contain a selected choice.
-  response.answers.greeting.choice
-  // @ts-expect-error Unknown question IDs are not exposed.
-  response.answers.missing
-})
-
-declare const route: EvaluationRoute<{ readonly temperature?: number }>
-const custom = EvaluationModel.make({ id: "custom", provider: "custom", route })
-Evaluation.evaluate({
-  model: custom,
-  state: "hello",
-  questions: { ok: { type: "boolean", instructions: "OK?" } },
-  options: { temperature: 0.5 },
-})
-// @ts-expect-error Selected evaluation models retain their request option types.
-Evaluation.evaluate({
-  model: custom,
-  state: "hello",
-  questions: { ok: { type: "boolean", instructions: "OK?" } },
-  options: { temperature: "high" },
-})
@@ -8,11 +8,9 @@ import {
  CloudflareWorkersAI,
  DeepSeek,
  Fireworks,
-  OpenCodeZen,
  OpenAI,
  OpenAICompatible,
  OpenRouter,
-  TypeSafeAI,
  XAI,
 } from "@opencode/ai/providers"
 import {
@@ -25,7 +23,6 @@ import {
 } from "@opencode/ai/protocols"
 import * as AnthropicMessages from "@opencode/ai/protocols/anthropic-messages"
 import { TestLLM } from "@opencode/ai/testing"
-import { Evaluation, EvaluationClient } from "@opencode/ai/experimental"

 describe("public exports", () => {
  test("root exposes app-facing runtime APIs", () => {
@@ -40,9 +37,6 @@ describe("public exports", () => {
    expect(TestLLM.layer).toBeFunction()
    expect(TestLLM.testLayer).toBeFunction()
    expect(TestLLM.Test.of).toBeFunction()
-    expect(Evaluation.evaluate).toBeFunction()
-    expect(EvaluationClient.layer).toBeDefined()
-    expect(EvaluationClient.fetchLayer).toBeDefined()
  })

  test("route barrel exposes route-authoring APIs", () => {
@@ -72,8 +66,6 @@ describe("public exports", () => {
    expect(CloudflareWorkersAI.configure).toBeFunction()
    expect(CloudflareWorkersAI.configure({ accountId: "fixture", apiKey: "fixture" }).model).toBeFunction()
    expect(OpenRouter.model).toBeFunction()
-    expect(TypeSafeAI.experimental.evaluation).toBeFunction()
-    expect(OpenCodeZen.experimental.evaluation).toBeFunction()
    expect(XAI.model).toBeFunction()
    expect(XAI.provider.responses).toBe(XAI.responses)
    expect(XAI.provider.chat).toBe(XAI.chat)
@@ -1,13 +1,9 @@
 {
  "version": 1,
  "metadata": {
-    "tags": [
-      "prefix:google-vertex",
-      "provider:google-vertex",
-      "protocol:gemini"
-    ],
+    "tags": ["prefix:google-vertex", "provider:google-vertex", "protocol:gemini"],
    "name": "google-vertex/calls-a-tool",
-    "recordedAt": "2026-09-22T03:46:29.725Z"
+    "recordedAt": "2026-08-23T17:21:51.036Z"
  },
  "interactions": [
    {
@@ -25,7 +21,7 @@
        "headers": {
          "content-type": "text/event-stream"
        },
-        "body": "data: {\"candidates\": [{\"content\": {\"role\": \"model\",\"parts\": [{\"functionCall\": {\"name\": \"lookup_weather\",\"args\": {\"city\": \"Paris\"},\"id\": \"call_28936\"},\"thoughtSignature\": \"AY89a1/MVeBxtwu9l/96clFobOrrd7Q5MTf5o8/A22fc++1EsFYVeCFx9WCGmJ+D3yW3FWlRXKtJECYfprSoxixCSOYBNiV9g8/IkejbAxF26k1vxTsHkoqts0O2s8GqqBSRAavJfKQ/taTRbPuIq+b+RKZ8SDJFoWDnFjXpdS5S164uJTjmgs4ALd8oB1oQRycMsTbAY51TmkcNUnhARpjKQfqiizz4KfSRFjx7xDnza0v4jj73m2GV86eLDhVT7trIT+Dl5DsJt6RBLOE2Amse54mcpIbsYaANlY1YDU6FKuUBqnuwpl0OfhMXwWuYMogv1tH/0rTXsqNwmHyt/b9ZZXqYCdFXpMGt8udmoZ0d\"}]}}],\"usageMetadata\": {\"trafficType\": \"ON_DEMAND\"},\"modelVersion\": \"gemini-3.5-flash\",\"createTime\": \"2026-09-22T03:46:28.953809Z\",\"responseId\": \"FPqxatGbOsSorb8PtY2z8Q4\"}\r\n\r\ndata: {\"candidates\": [{\"content\": {\"role\": \"model\",\"parts\": [{\"text\": \"\"}]},\"finishReason\": \"STOP\"}],\"usageMetadata\": {\"promptTokenCount\": 39,\"candidatesTokenCount\": 16,\"totalTokenCount\": 93,\"trafficType\": \"ON_DEMAND\",\"promptTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 39}],\"candidatesTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 16}],\"thoughtsTokenCount\": 38},\"modelVersion\": \"gemini-3.5-flash\",\"createTime\": \"2026-09-22T03:46:28.953809Z\",\"responseId\": \"FPqxatGbOsSorb8PtY2z8Q4\"}\r\n\r\n"
+        "body": "data: {\"candidates\": [{\"content\": {\"role\": \"model\",\"parts\": [{\"functionCall\": {\"name\": \"lookup_weather\",\"args\": {\"city\": \"Paris\"},\"id\": \"call_425130\"},\"thoughtSignature\": \"AY89a1+1fXnLgYhHMuN3Ak6LBhT6PcrYOW7iPav4LfsacvG/Z6l1yJ+AsU7vWhFj/JyPIbsJJQ+GjohM9sCIZ6nqUOIg3reo/7osmrCvFrVHedTHQcwiPzoz2Kp3gb+uWjFAXxk1EX4IRAKcu0ox1W/Z9PpuZvHkTerGO2a82e02N6MAF1YhhtbXFvSdqLRih2Os68rdOk5/Bcld7ol8qUgeyIZ3CtI3OJ5jwRcD8LjvK33A7ZFzH5Bxp/peUmXvqnu5iNhnGBxZaJy/vupCtxRZxjaS+ojG0/UhyrnRiKIpbzQ0FBkxePPn8GCX/LOe2y3GUc98co8lN8OOuCd9ZmEdx5AjHmQkPO9fAV9SxG6Bda6SDWVL8o/Uz3WSQYoUEfAdoajEWIBvcisoeCJjb7zgmRRZ9VQSPl3RXj5LFRvX8jn0YKV1CahYbc24jA==\"}]}}],\"usageMetadata\": {\"trafficType\": \"ON_DEMAND\"},\"modelVersion\": \"gemini-3.5-flash\",\"createTime\": \"2026-08-23T17:21:50.308576Z\",\"responseId\": \"LiyLauDqErCErb8Pj8aWkAs\"}\r\n\r\ndata: {\"candidates\": [{\"content\": {\"role\": \"model\",\"parts\": [{\"text\": \"\"}]},\"finishReason\": \"STOP\"}],\"usageMetadata\": {\"promptTokenCount\": 39,\"candidatesTokenCount\": 16,\"totalTokenCount\": 102,\"trafficType\": \"ON_DEMAND\",\"promptTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 39}],\"candidatesTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 16}],\"thoughtsTokenCount\": 47},\"modelVersion\": \"gemini-3.5-flash\",\"createTime\": \"2026-08-23T17:21:50.308576Z\",\"responseId\": \"LiyLauDqErCErb8Pj8aWkAs\"}\r\n\r\n"
      }
    }
  ]
@@ -1,13 +1,9 @@
 {
  "version": 1,
  "metadata": {
-    "tags": [
-      "prefix:google-vertex",
-      "provider:google-vertex",
-      "protocol:gemini"
-    ],
+    "tags": ["prefix:google-vertex", "provider:google-vertex", "protocol:gemini"],
    "name": "google-vertex/continues-after-a-tool-result",
-    "recordedAt": "2026-09-22T03:46:30.691Z"
+    "recordedAt": "2026-08-23T17:21:51.853Z"
  },
  "interactions": [
    {
@@ -18,14 +14,14 @@
        "headers": {
          "content-type": "application/json"
        },
-        "body": "{\"contents\":[{\"role\":\"user\",\"parts\":[{\"text\":\"What is the weather in Paris?\"}]},{\"role\":\"model\",\"parts\":[{\"functionCall\":{\"id\":\"call_paris_1\",\"name\":\"lookup_weather\",\"args\":{\"city\":\"Paris\"}},\"thoughtSignature\":\"skip_thought_signature_validator\"}]},{\"role\":\"user\",\"parts\":[{\"functionResponse\":{\"id\":\"call_paris_1\",\"name\":\"lookup_weather\",\"response\":{\"name\":\"lookup_weather\",\"content\":\"18C, light rain\"}}}]}],\"tools\":[{\"functionDeclarations\":[{\"name\":\"lookup_weather\",\"description\":\"Look up the current weather for a city\",\"parameters\":{\"required\":[\"city\"],\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}}}}]}]}"
+        "body": "{\"contents\":[{\"role\":\"user\",\"parts\":[{\"text\":\"What is the weather in Paris?\"}]},{\"role\":\"model\",\"parts\":[{\"functionCall\":{\"name\":\"lookup_weather\",\"args\":{\"city\":\"Paris\"}},\"thoughtSignature\":\"skip_thought_signature_validator\"}]},{\"role\":\"user\",\"parts\":[{\"functionResponse\":{\"name\":\"lookup_weather\",\"response\":{\"name\":\"lookup_weather\",\"content\":\"18C, light rain\"}}}]}],\"tools\":[{\"functionDeclarations\":[{\"name\":\"lookup_weather\",\"description\":\"Look up the current weather for a city\",\"parameters\":{\"required\":[\"city\"],\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}}}}]}]}"
      },
      "response": {
        "status": 200,
        "headers": {
          "content-type": "text/event-stream"
        },
-        "body": "data: {\"candidates\": [{\"content\": {\"role\": \"model\",\"parts\": [{\"text\": \"The weather\"}]}}],\"usageMetadata\": {\"trafficType\": \"ON_DEMAND\"},\"modelVersion\": \"gemini-3.5-flash\",\"createTime\": \"2026-09-22T03:46:29.830958Z\",\"responseId\": \"Ffqxau7bMoCOrb8P_Iu5sA0\"}\r\n\r\ndata: {\"candidates\": [{\"content\": {\"role\": \"model\",\"parts\": [{\"text\": \" in Paris is currently 18°C with light rain.\"}]}}],\"usageMetadata\": {\"trafficType\": \"ON_DEMAND\"},\"modelVersion\": \"gemini-3.5-flash\",\"createTime\": \"2026-09-22T03:46:29.830958Z\",\"responseId\": \"Ffqxau7bMoCOrb8P_Iu5sA0\"}\r\n\r\ndata: {\"candidates\": [{\"content\": {\"role\": \"model\",\"parts\": [{\"text\": \"\",\"thoughtSignature\": \"AY89a18aVI8Uxr2VaOI822u0DyuQdy4B00uhLnjqYb5Qb6Mkscccm018knLtYThB5UX8dRv1VFsORSQ0Qo6Gx9RCng2AK9EPce7p\"}]},\"finishReason\": \"STOP\"}],\"usageMetadata\": {\"promptTokenCount\": 59,\"candidatesTokenCount\": 15,\"totalTokenCount\": 74,\"trafficType\": \"ON_DEMAND\",\"promptTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 59}],\"candidatesTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 15}]},\"modelVersion\": \"gemini-3.5-flash\",\"createTime\": \"2026-09-22T03:46:29.830958Z\",\"responseId\": \"Ffqxau7bMoCOrb8P_Iu5sA0\"}\r\n\r\n"
+        "body": "data: {\"candidates\": [{\"content\": {\"role\": \"model\",\"parts\": [{\"text\": \"The weather in Paris is currently 18°C with light rain.\"}]}}],\"usageMetadata\": {\"trafficType\": \"ON_DEMAND\"},\"modelVersion\": \"gemini-3.5-flash\",\"createTime\": \"2026-08-23T17:21:51.220919Z\",\"responseId\": \"LyyLave9DbWnrb8P1IjLmQQ\"}\r\n\r\ndata: {\"candidates\": [{\"content\": {\"role\": \"model\",\"parts\": [{\"text\": \"\",\"thoughtSignature\": \"AY89a197c+fpHJftPtcufnqMAyoRQKVEQK+KeG+RVHVx2wKil3L4jP4YWvfVbcuOFr2jio4Kre/hCrDANAoMFSvaZrdaPeo1b5bXQSmJKMH03yM5M6q6ME6JiBvXym143U4exIde4UbOh2tMeyXMvB3aWxcavIHd78g5G5QPLreo6A3LO5871cYYVeRwteY+/zbEdqfaAq1hlk6WYpWkNljYpjMyKwr15YC8rFLh3HYayS9tTN++GGrk/reZn6C3OEPlzPou/pXRATzcEAGVl/TW\"}]},\"finishReason\": \"STOP\"}],\"usageMetadata\": {\"promptTokenCount\": 59,\"candidatesTokenCount\": 15,\"totalTokenCount\": 98,\"trafficType\": \"ON_DEMAND\",\"promptTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 59}],\"candidatesTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 15}],\"thoughtsTokenCount\": 24},\"modelVersion\": \"gemini-3.5-flash\",\"createTime\": \"2026-08-23T17:21:51.220919Z\",\"responseId\": \"LyyLave9DbWnrb8P1IjLmQQ\"}\r\n\r\n"
      }
    }
  ]
@@ -1,13 +1,9 @@
 {
  "version": 1,
  "metadata": {
-    "tags": [
-      "prefix:google-vertex",
-      "provider:google-vertex",
-      "protocol:gemini"
-    ],
+    "tags": ["prefix:google-vertex", "provider:google-vertex", "protocol:gemini"],
    "name": "google-vertex/streams-text",
-    "recordedAt": "2026-09-22T03:46:28.840Z"
+    "recordedAt": "2026-08-23T17:21:50.112Z"
  },
  "interactions": [
    {
@@ -25,7 +21,7 @@
        "headers": {
          "content-type": "text/event-stream"
        },
-        "body": "data: {\"candidates\": [{\"content\": {\"role\": \"model\",\"parts\": [{\"text\": \"Hello\"}]}}],\"usageMetadata\": {\"trafficType\": \"ON_DEMAND\"},\"modelVersion\": \"gemini-3.5-flash\",\"createTime\": \"2026-09-22T03:46:26.748531Z\",\"responseId\": \"EvqxavPXLbqerb8P1eSViQs\"}\r\n\r\ndata: {\"candidates\": [{\"content\": {\"role\": \"model\",\"parts\": [{\"text\": \"\",\"thoughtSignature\": \"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\"}]},\"finishReason\": \"STOP\"}],\"usageMetadata\": {\"promptTokenCount\": 7,\"candidatesTokenCount\": 1,\"totalTokenCount\": 285,\"trafficType\": \"ON_DEMAND\",\"promptTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 7}],\"candidatesTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 1}],\"thoughtsTokenCount\": 277},\"modelVersion\": \"gemini-3.5-flash\",\"createTime\": \"2026-09-22T03:46:26.748531Z\",\"responseId\": \"EvqxavPXLbqerb8P1eSViQs\"}\r\n\r\n"
+        "body": "data: {\"candidates\": [{\"content\": {\"role\": \"model\",\"parts\": [{\"text\": \"Hello\"}]}}],\"usageMetadata\": {\"trafficType\": \"ON_DEMAND\"},\"modelVersion\": \"gemini-3.5-flash\",\"createTime\": \"2026-08-23T17:21:48.528714Z\",\"responseId\": \"LCyLasqiIO6crb8P1sDboQc\"}\r\n\r\ndata: {\"candidates\": [{\"content\": {\"role\": \"model\",\"parts\": [{\"text\": \"\",\"thoughtSignature\": \"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\"}]},\"finishReason\": \"STOP\"}],\"usageMetadata\": {\"promptTokenCount\": 7,\"candidatesTokenCount\": 1,\"totalTokenCount\": 150,\"trafficType\": \"ON_DEMAND\",\"promptTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 7}],\"candidatesTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 1}],\"thoughtsTokenCount\": 142},\"modelVersion\": \"gemini-3.5-flash\",\"createTime\": \"2026-08-23T17:21:48.528714Z\",\"responseId\": \"LCyLasqiIO6crb8P1sDboQc\"}\r\n\r\n"
      }
    }
  ]
@@ -1,33 +0,0 @@
-{
-  "version": 1,
-  "metadata": {
-    "model": "jev-1.13-free",
-    "tags": [
-      "prefix:opencode-zen-evaluation",
-      "provider:opencode",
-      "protocol:system-one"
-    ],
-    "name": "opencode-zen-evaluation/evaluates-choice-score-and-boolean-questions",
-    "recordedAt": "2026-09-22T03:44:57.511Z"
-  },
-  "interactions": [
-    {
-      "transport": "http",
-      "request": {
-        "method": "POST",
-        "url": "https://opencode.ai/zen/v1/systemone",
-        "headers": {
-          "content-type": "application/json"
-        },
-        "body": "{\"model\":\"jev-1.13-free\",\"state\":\"I was charged twice for the same invoice. Please refund the duplicate payment today.\",\"questions\":{\"department\":{\"type\":\"choice\",\"instructions\":\"Which team should handle this support request?\",\"criteria\":{\"billing\":\"Payments, invoices, refunds, or failed charges\",\"technical\":\"Bugs, outages, or integrations\",\"sales\":\"Pricing, upgrades, or new accounts\"}},\"urgency\":{\"type\":\"score\",\"instructions\":\"How urgent is this support request?\",\"criteria\":[\"Can wait for normal support\",\"Needs prompt attention\",\"Actively blocking revenue\"]},\"refund\":{\"type\":\"noul\",\"instructions\":\"Is the customer asking for a refund?\"}}}"
-      },
-      "response": {
-        "status": 200,
-        "headers": {
-          "content-type": "application/json"
-        },
-        "body": "{\"model\":\"jev-1.13-free\",\"answers\":{\"department\":{\"type\":\"choice\",\"choice\":\"billing\",\"confidence\":1,\"probabilities\":{\"technical\":0,\"sales\":0,\"billing\":1}},\"urgency\":{\"type\":\"score\",\"score\":1.02,\"confidence\":0.95,\"legend\":{\"0\":\"Can wait for normal support\",\"1\":\"Needs prompt attention\",\"2\":\"Actively blocking revenue\"},\"probabilities\":{\"0\":0,\"1\":0.97,\"2\":0.03}},\"refund\":{\"type\":\"noul\",\"noul\":0.99}},\"usage\":{\"input_tokens\":422,\"output_tokens\":69}}"
-      }
-    }
-  ]
-}
@@ -1,33 +0,0 @@
-{
-  "version": 1,
-  "metadata": {
-    "model": "jev-latest",
-    "tags": [
-      "prefix:typesafe-evaluation",
-      "provider:typesafe-ai",
-      "protocol:system-one"
-    ],
-    "name": "typesafe-evaluation/evaluates-choice-score-and-boolean-questions",
-    "recordedAt": "2026-09-22T03:44:28.626Z"
-  },
-  "interactions": [
-    {
-      "transport": "http",
-      "request": {
-        "method": "POST",
-        "url": "https://api.typesafe.ai/v1/systemone",
-        "headers": {
-          "content-type": "application/json"
-        },
-        "body": "{\"model\":\"jev-latest\",\"state\":\"I was charged twice for the same invoice. Please refund the duplicate payment today.\",\"questions\":{\"department\":{\"type\":\"choice\",\"instructions\":\"Which team should handle this support request?\",\"criteria\":{\"billing\":\"Payments, invoices, refunds, or failed charges\",\"technical\":\"Bugs, outages, or integrations\",\"sales\":\"Pricing, upgrades, or new accounts\"}},\"urgency\":{\"type\":\"score\",\"instructions\":\"How urgent is this support request?\",\"criteria\":[\"Can wait for normal support\",\"Needs prompt attention\",\"Actively blocking revenue\"]},\"refund\":{\"type\":\"noul\",\"instructions\":\"Is the customer asking for a refund?\"}}}"
-      },
-      "response": {
-        "status": 200,
-        "headers": {
-          "content-type": "application/json"
-        },
-        "body": "{\"model\":\"jev-1.13.0\",\"answers\":{\"department\":{\"type\":\"choice\",\"choice\":\"billing\",\"confidence\":1.0,\"probabilities\":{\"billing\":1.0,\"sales\":0.0,\"technical\":0.0}},\"urgency\":{\"type\":\"score\",\"score\":1.01,\"confidence\":0.97,\"legend\":{\"0\":\"Can wait for normal support\",\"1\":\"Needs prompt attention\",\"2\":\"Actively blocking revenue\"},\"probabilities\":{\"0\":0.0,\"1\":0.98,\"2\":0.02}},\"refund\":{\"type\":\"noul\",\"noul\":0.99}},\"usage\":{\"input_tokens\":422,\"output_tokens\":69}}"
-      }
-    }
-  ]
-}
@@ -1,79 +0,0 @@
-import { describe, expect } from "bun:test"
-import { Effect } from "effect"
-import { Evaluation } from "../../src/experimental.js"
-import { OpenCodeZen, TypeSafeAI } from "../../src/providers.js"
-import { recordedTests } from "../recorded-test.js"
-
-const questions = {
-  department: {
-    type: "choice",
-    instructions: "Which team should handle this support request?",
-    criteria: {
-      billing: "Payments, invoices, refunds, or failed charges",
-      technical: "Bugs, outages, or integrations",
-      sales: "Pricing, upgrades, or new accounts",
-    },
-  },
-  urgency: {
-    type: "score",
-    instructions: "How urgent is this support request?",
-    criteria: ["Can wait for normal support", "Needs prompt attention", "Actively blocking revenue"],
-  },
-  refund: { type: "boolean", instructions: "Is the customer asking for a refund?" },
-} as const
-
-const state = "I was charged twice for the same invoice. Please refund the duplicate payment today."
-
-const typesafe = recordedTests({
-  prefix: "typesafe-evaluation",
-  provider: "typesafe-ai",
-  protocol: "system-one",
-  requires: ["TYPESAFE_API_KEY"],
-  metadata: { model: "jev-latest" },
-})
-
-const zen = recordedTests({
-  prefix: "opencode-zen-evaluation",
-  provider: "opencode",
-  protocol: "system-one",
-  requires: ["OPENCODE_API_KEY"],
-  metadata: { model: "jev-1.13-free" },
-})
-
-describe("experimental Evaluation recorded", () => {
-  typesafe.effect("evaluates choice score and boolean questions", () =>
-    assertEvaluation(
-      TypeSafeAI.configure({ apiKey: process.env.TYPESAFE_API_KEY ?? "fixture" }).experimental.evaluation("jev-latest"),
-      "typesafe",
-    ),
-  )
-
-  zen.effect("evaluates choice score and boolean questions", () =>
-    assertEvaluation(
-      OpenCodeZen.configure({ apiKey: process.env.OPENCODE_API_KEY ?? "fixture" }).experimental.evaluation(
-        "jev-1.13-free",
-      ),
-      "opencode",
-    ),
-  )
-})
-
-const assertEvaluation = (
-  model: ReturnType<typeof TypeSafeAI.experimental.evaluation>,
-  metadataKey: "typesafe" | "opencode",
-) =>
-  Effect.gen(function* () {
-    const response = yield* Evaluation.evaluate({ model, state, questions })
-    expect(response.model).toStartWith("jev-")
-    expect(response.answers.department.type).toBe("choice")
-    expect(response.answers.department.choice).toBe("billing")
-    expect(response.answers.department.probabilities?.billing).toBeGreaterThan(0.5)
-    expect(response.answers.urgency.type).toBe("score")
-    expect(response.answers.urgency.score).toBeGreaterThanOrEqual(0)
-    expect(response.answers.urgency.score).toBeLessThanOrEqual(2)
-    expect(response.answers.refund.type).toBe("boolean")
-    expect(response.answers.refund.probability).toBeGreaterThan(0.5)
-    expect(response.usage?.inputTokens).toBeGreaterThan(0)
-    expect(response.usage?.outputTokens).toBeGreaterThan(0)
-    expect(response.providerMetadata?.[metadataKey]?.confidence).toBeDefined()
-  })
@@ -114,7 +114,7 @@ describe("Google Vertex providers", () => {
    }),
  )

-  it.effect("preserves function call ids in lowered Vertex bodies", () =>
+  it.effect("strips function call ids Vertex does not accept from lowered bodies", () =>
    Effect.gen(function* () {
      const prepared = yield* compileRequest(
        LLM.request({
@@ -142,14 +142,15 @@ describe("Google Vertex providers", () => {
        }),
      )

+      expect(JSON.stringify(prepared.body.contents)).not.toContain('"id"')
      expect(prepared.body.contents).toMatchObject([
-        { role: "model", parts: [{ functionCall: { id: "call_1", name: "lookup", args: { query: "weather" } } }] },
+        { role: "model", parts: [{ functionCall: { id: undefined, name: "lookup", args: { query: "weather" } } }] },
        {
          role: "user",
          parts: [
            {
              functionResponse: {
-                id: "call_1",
+                id: undefined,
                name: "lookup",
                response: { name: "lookup", content: "sunny" },
              },
@@ -234,23 +235,12 @@ describe("Google Vertex providers", () => {
          parts: [
            { text: "Thinking.", thought: true, thoughtSignature: "reasoning_sig" },
            { text: "Checking.", thoughtSignature: "text_sig" },
-            {
-              functionCall: { id: "provider_call_1", name: "lookup", args: { query: "weather" } },
-              thoughtSignature: "tool_sig",
-            },
+            { functionCall: { name: "lookup", args: { query: "weather" } }, thoughtSignature: "tool_sig" },
          ],
        },
        {
          role: "user",
-          parts: [
-            {
-              functionResponse: {
-                id: "provider_call_1",
-                name: "lookup",
-                response: { name: "lookup", content: "sunny" },
-              },
-            },
-          ],
+          parts: [{ functionResponse: { name: "lookup", response: { name: "lookup", content: "sunny" } } }],
        },
      ])
    }),
@@ -6,8 +6,6 @@ import * as path from "node:path"
 import { fileURLToPath } from "node:url"
 import { LLMClient, RequestExecutor } from "../src/route.js"
 import { ImageClient } from "../src/image-client.js"
-import { EvaluationClient } from "../src/experimental/evaluation-client.js"
-import type { Service as EvaluationClientService } from "../src/experimental/evaluation-client.js"
 import type { Service as ImageClientService } from "../src/image-client.js"
 import type { Service as LLMClientService } from "../src/route/client.js"
 import type { Service as RequestExecutorService } from "../src/route/executor.js"
@@ -20,12 +18,7 @@ import {
 const __dirname = path.dirname(fileURLToPath(import.meta.url))
 const FIXTURES_DIR = path.resolve(__dirname, "fixtures", "recordings")

-type RecordedEnv =
-  | RequestExecutorService
-  | LLMClientService
-  | ImageClientService
-  | EvaluationClientService
-  | Socket.WebSocketConstructor
+type RecordedEnv = RequestExecutorService | LLMClientService | ImageClientService | Socket.WebSocketConstructor

 type RecordedTestsOptions = RecordedGroupOptions & {
  readonly options?: HttpRecorder.RecorderOptions
@@ -99,7 +92,6 @@ export const recordedTests = (options: RecordedTestsOptions) =>
        requestExecutor,
        LLMClient.layer.pipe(Layer.provide(requestExecutor)),
        ImageClient.layer.pipe(Layer.provide(requestExecutor)),
-        EvaluationClient.layer.pipe(Layer.provide(requestExecutor)),
        webSocket,
      )
    },
@@ -19,13 +19,6 @@ export function mountBrowserPane() {
      session: "Alpha",
      mounted: true,
      visible: true,
-      url: undefined as string | undefined,
-      loading: false,
-      generation: 0,
-      delayNavigation: false,
-      pendingURL: undefined as string | undefined,
-      loadErrors: {} as Record<string, string | undefined>,
-      error: undefined as string | undefined,
      layouts: {} as Record<string, BrowserPaneLayout | undefined>,
    })
    const tabs = ["Alpha", "Beta"].map((name) => ({
@@ -54,33 +47,13 @@ export function mountBrowserPane() {
      opened: () => !!registrations.get(store.session),
      state: () => ({ tabs: tabs.filter((tab) => tab.title === store.session), focusedTabID: null }),
      tabs: () => tabs.filter((tab) => tab.title === store.session),
-      active: () => {
-        const tab = tabs.find((tab) => tab.title === store.session) ?? tabs[0]
-        return {
-          ...tab,
-          url: store.url ?? tab.url,
-          loading: store.loading,
-          generation: store.generation,
-          loadError: store.loadErrors[store.session],
-        }
-      },
+      active: () => tabs.find((tab) => tab.title === store.session) ?? tabs[0],
      registration: () => registrations.get(store.session),
-      error: () => store.error ?? (store.loadErrors[store.session] ? "Request failed" : undefined),
+      error: () => undefined,
      suspended: () => false,
      close: () => undefined,
      open: () => undefined,
-      command: (command) => {
-        setStore("error", undefined)
-        if (command.type === "navigate" || command.type === "reload") setStore("loadErrors", store.session, undefined)
-        if (command.type === "navigate") {
-          if (store.delayNavigation) {
-            setStore("pendingURL", command.url)
-            return
-          }
-          setStore({ url: command.url, loading: false, generation: store.generation + 1 })
-        }
-        if (command.type === "stop") setStore("loading", false)
-      },
+      command: () => undefined,
    }
    return (
      <>
@@ -91,32 +64,6 @@ export function mountBrowserPane() {
            {(name) => <button onClick={() => setStore({ session: name, mounted: name !== "Empty" })}>{name}</button>}
          </For>
          <button onClick={() => setStore("mounted", false)}>Unmount pane</button>
-          <button onClick={() => setStore({ url: "about:blank", loading: false })}>Blank page</button>
-          <button onClick={() => setStore({ url: "about:blank", loading: true })}>Loading page</button>
-          <button
-            onClick={() =>
-              setStore({ loading: true, generation: store.generation + 1, loadErrors: { [store.session]: undefined } })
-            }
-          >
-            Load current page
-          </button>
-          <button onClick={() => setStore("loadErrors", store.session, "ERR_CONNECTION_REFUSED")}>Failed page</button>
-          <button onClick={() => setStore("delayNavigation", true)}>Delay navigation</button>
-          <button onClick={() => setStore({ error: "ERR_BLOCKED_BY_CLIENT", pendingURL: undefined })}>
-            Block navigation
-          </button>
-          <button
-            onClick={() =>
-              setStore({
-                url: store.pendingURL,
-                pendingURL: undefined,
-                loading: false,
-                generation: store.generation + 1,
-              })
-            }
-          >
-            Complete navigation
-          </button>
          <button onClick={() => setStore("visible", (visible) => !visible)}>Toggle Review tab</button>
        </nav>
        <div style={{ width: "640px", height: "360px", border: "1px solid #555" }}>
@@ -57,153 +57,3 @@ story("hides the native view immediately while the pane stays mounted", async ({
  await toggle.click()
  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "true")
 })
-
-story("shows the empty state over a blank native page and restores navigation", async ({ page }) => {
-  const root = page.getByTestId("browser-pane-fixture")
-  await root.getByRole("button", { name: "Blank page", exact: true }).click()
-  await expect(root.getByText("Enter URL", { exact: true })).toBeVisible()
-  await expect(root.getByText('Or prompt "Open in the app browser"', { exact: true })).toBeVisible()
-  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "false")
-  await expect(root.getByRole("button", { name: "Reload", exact: true })).toBeDisabled()
-
-  const address = root.getByRole("textbox", { name: "Browser address", exact: true })
-  await address.fill("https://example.com/")
-  await expect(root.getByText("Enter URL", { exact: true })).toBeVisible()
-  await address.press("Enter")
-  await expect(address).not.toBeFocused()
-  await expect(root.getByText("Enter URL", { exact: true })).toBeHidden()
-  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "true")
-  await expect(root.getByRole("button", { name: "Reload", exact: true })).toBeEnabled()
-})
-
-story("keeps Stop available and hides the empty state while a blank page loads", async ({ page }) => {
-  const root = page.getByTestId("browser-pane-fixture")
-  await root.getByRole("button", { name: "Loading page", exact: true }).click()
-  await expect(root.getByText("Enter URL", { exact: true })).toBeHidden()
-  await root.getByRole("button", { name: "Stop", exact: true }).click()
-  await expect(root.getByText("Enter URL", { exact: true })).toBeVisible()
-  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "false")
-})
-
-story("keeps the submitted URL visible until the browser reports navigation", async ({ page }) => {
-  const root = page.getByTestId("browser-pane-fixture")
-  await root.getByRole("button", { name: "Blank page", exact: true }).click()
-  await root.getByRole("button", { name: "Delay navigation", exact: true }).click()
-  const address = root.getByRole("textbox", { name: "Browser address", exact: true })
-  await address.fill("https://example.com/")
-  await address.press("Enter")
-  await expect(address).not.toBeFocused()
-  await expect(address).toHaveValue("https://example.com/")
-  await expect(root.getByText("Enter URL", { exact: true })).toBeHidden()
-
-  await root.getByRole("button", { name: "Complete navigation", exact: true }).click()
-  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "true")
-  await expect(address).toHaveValue("https://example.com/")
-
-  await address.fill("https://unsubmitted.example/")
-  await root.getByRole("button", { name: "Delay navigation", exact: true }).click()
-  await expect(address).toHaveValue("https://example.com/")
-})
-
-story("restores the current URL when a submitted navigation is blocked", async ({ page }) => {
-  const root = page.getByTestId("browser-pane-fixture")
-  await root.getByRole("button", { name: "Delay navigation", exact: true }).click()
-  const address = root.getByRole("textbox", { name: "Browser address", exact: true })
-  await address.fill("https://blocked.example/")
-  await address.press("Enter")
-  await expect(address).toHaveValue("https://blocked.example/")
-  await root.getByRole("button", { name: "Block navigation", exact: true }).click()
-  await expect(root.getByText("ERR_BLOCKED_BY_CLIENT", { exact: true })).toBeVisible()
-  await expect(address).toHaveValue("https://alpha.example/")
-  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "true")
-})
-
-story("shows a themed failure state for only the failed tab and allows retry", async ({ page }) => {
-  const root = page.getByTestId("browser-pane-fixture")
-  await root.getByRole("button", { name: "Failed page", exact: true }).click()
-  await expect(root.getByText("URL can't be reached", { exact: true })).toBeVisible()
-  await expect(root.getByText("Check the URL and your connection, then try again.", { exact: true })).toBeVisible()
-  await expect(root.getByText("Request failed", { exact: true })).toBeHidden()
-  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "false")
-  await expect(root.getByRole("textbox", { name: "Browser address", exact: true })).toHaveValue(
-    "https://alpha.example/",
-  )
-
-  await root.getByRole("button", { name: "Beta", exact: true }).click()
-  await expect(root.getByText("URL can't be reached", { exact: true })).toBeHidden()
-  await expect(root.getByTestId("native-Beta")).toHaveAttribute("data-visible", "true")
-  await root.getByRole("button", { name: "Alpha", exact: true }).click()
-  await expect(root.getByText("URL can't be reached", { exact: true })).toBeVisible()
-
-  await root.getByRole("button", { name: "Reload", exact: true }).click()
-  await expect(root.getByText("URL can't be reached", { exact: true })).toBeHidden()
-  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "true")
-})
-
-story("returns a failed tab to the empty state when an empty URL is submitted", async ({ page }) => {
-  const root = page.getByTestId("browser-pane-fixture")
-  await root.getByRole("button", { name: "Failed page", exact: true }).click()
-  await expect(root.getByText("URL can't be reached", { exact: true })).toBeVisible()
-  await root.getByRole("button", { name: "Delay navigation", exact: true }).click()
-
-  const address = root.getByRole("textbox", { name: "Browser address", exact: true })
-  await address.fill("")
-  await address.press("Enter")
-  await expect(address).not.toBeFocused()
-  await expect(address).toHaveValue("")
-  await root.getByRole("button", { name: "Load current page", exact: true }).click()
-  await expect(root.getByRole("button", { name: "Stop", exact: true })).toBeEnabled()
-  await root.getByRole("button", { name: "Complete navigation", exact: true }).click()
-  await expect(root.getByText("URL can't be reached", { exact: true })).toBeHidden()
-  await expect(root.getByText("Enter URL", { exact: true })).toBeVisible()
-  await expect(root.getByRole("button", { name: "Reload", exact: true })).toBeDisabled()
-  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "false")
-})
-
-story("selects the full URL when the address field gains focus", async ({ page }) => {
-  const root = page.getByTestId("browser-pane-fixture")
-  const address = root.getByRole("textbox", { name: "Browser address", exact: true })
-  await address.click()
-  await expect(address).toHaveJSProperty("selectionStart", 0)
-  await expect(address).toHaveJSProperty("selectionEnd", "https://alpha.example/".length)
-  await address.pressSequentially("https://example.com/")
-  await expect(address).toHaveValue("https://example.com/")
-  await address.press("Enter")
-  await expect(address).not.toBeFocused()
-  await address.focus()
-  await expect(address).toHaveJSProperty("selectionStart", 0)
-  await expect(address).toHaveJSProperty("selectionEnd", "https://example.com/".length)
-  await address.press("ArrowRight")
-  await address.click()
-  await expect(address).toHaveJSProperty("selectionStart", 0)
-  await expect(address).toHaveJSProperty("selectionEnd", "https://example.com/".length)
-})
-
-story("keeps the current page visible while a submitted URL loads", async ({ page }) => {
-  const root = page.getByTestId("browser-pane-fixture")
-  await root.getByRole("button", { name: "Delay navigation", exact: true }).click()
-  const address = root.getByRole("textbox", { name: "Browser address", exact: true })
-  await address.fill("https://example.com/")
-  await address.press("Enter")
-  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "true")
-  await expect(address).toHaveValue("https://example.com/")
-
-  await root.getByRole("button", { name: "Load current page", exact: true }).click()
-  await expect(root.getByRole("button", { name: "Stop", exact: true })).toBeEnabled()
-  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "true")
-  await root.getByRole("button", { name: "Complete navigation", exact: true }).click()
-  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "true")
-  await expect(address).toHaveValue("https://example.com/")
-})
-
-story("keeps the current page and restores its URL when an empty address is submitted", async ({ page }) => {
-  const root = page.getByTestId("browser-pane-fixture")
-  const address = root.getByRole("textbox", { name: "Browser address", exact: true })
-  await address.fill("")
-  await address.press("Enter")
-  await expect(address).not.toBeFocused()
-  await expect(address).toHaveValue("https://alpha.example/")
-  await expect(root.getByTestId("native-Alpha")).toHaveAttribute("data-visible", "true")
-  await expect(root.getByText("Enter URL", { exact: true })).toBeHidden()
-  await expect(root.getByRole("button", { name: "Reload", exact: true })).toBeEnabled()
-})
@@ -17,12 +17,14 @@ const milestones = [
  "electronSpawnStarted",
  "debugEndpointReady",
  "electronStarted",
-  "layersReady",
-  "windowVisible",
  "serviceEnsureStarted",
  "serviceSpawnRequested",
  "serviceReady",
+  "backgroundLoadingReady",
  "rendererViteConnected",
+  "rendererInitializationStarted",
+  "rendererInitializationReady",
+  "windowVisible",
  "homeReady",
 ] as const
 const phases = [
@@ -126,12 +128,14 @@ const milestonePatterns: ReadonlyArray<{ name: Milestone; text: string }> = [
  { name: "electronSpawnStarted", text: "starting electron app..." },
  { name: "debugEndpointReady", text: "DevTools listening on ws://" },
  { name: "electronStarted", text: "app starting" },
-  { name: "layersReady", text: "layers ready" },
-  { name: "windowVisible", text: "main window visible" },
  { name: "serviceEnsureStarted", text: "starting v2 background service" },
  { name: "serviceSpawnRequested", text: "v2 CLI background service starting" },
  { name: "serviceReady", text: "v2 CLI background service ready" },
+  { name: "backgroundLoadingReady", text: "loading task finished" },
  { name: "rendererViteConnected", text: "[vite] connected." },
+  { name: "rendererInitializationStarted", text: "awaiting server ready" },
+  { name: "rendererInitializationReady", text: "server ready" },
+  { name: "windowVisible", text: "main window visible" },
 ]

 async function createColdProfile() {
@@ -400,12 +404,14 @@ function requireMilestones(observed: Partial<Record<Milestone, number>>) {
    electronSpawnStarted: get("electronSpawnStarted"),
    debugEndpointReady: get("debugEndpointReady"),
    electronStarted: get("electronStarted"),
-    layersReady: get("layersReady"),
-    windowVisible: get("windowVisible"),
    serviceEnsureStarted: get("serviceEnsureStarted"),
    serviceSpawnRequested: get("serviceSpawnRequested"),
    serviceReady: get("serviceReady"),
+    backgroundLoadingReady: get("backgroundLoadingReady"),
    rendererViteConnected: get("rendererViteConnected"),
+    rendererInitializationStarted: get("rendererInitializationStarted"),
+    rendererInitializationReady: get("rendererInitializationReady"),
+    windowVisible: get("windowVisible"),
    homeReady: get("homeReady"),
  }
 }
@@ -703,7 +703,7 @@ function messageContent(
    return {
      type: "reasoning",
      text: part.text,
-      native: jsonRecord(part.metadata),
+      state: jsonRecord(part.metadata),
      time: part.time
        ? { created: part.time.start, ...(part.time.end === undefined ? {} : { completed: part.time.end }) }
        : undefined,
@@ -20,12 +20,14 @@ describe("desktop startup benchmark", () => {
      ["electronSpawnStarted", "starting electron app..."],
      ["debugEndpointReady", "DevTools listening on ws://"],
      ["electronStarted", "app starting"],
-      ["layersReady", "layers ready"],
-      ["windowVisible", "main window visible"],
      ["serviceEnsureStarted", "starting v2 background service"],
      ["serviceSpawnRequested", "v2 CLI background service starting"],
      ["serviceReady", "v2 CLI background service ready"],
+      ["backgroundLoadingReady", "loading task finished"],
      ["rendererViteConnected", "[vite] connected."],
+      ["rendererInitializationStarted", "awaiting server ready"],
+      ["rendererInitializationReady", "server ready"],
+      ["windowVisible", "main window visible"],
    ] as const
    cases.forEach(([milestone, line]) => {
      expect(milestoneForLine(`\u001b[32m${line}\u001b[39m`)).toBe(milestone)
@@ -56,12 +58,14 @@ function sample(run: number, commandToHomeReadyMs: number): DesktopStartupSample
    electronSpawnStarted: 7,
    debugEndpointReady: 8,
    electronStarted: 9,
-    layersReady: 10,
-    windowVisible: 11,
-    serviceEnsureStarted: 12,
-    serviceSpawnRequested: 13,
-    serviceReady: 14,
-    rendererViteConnected: 15,
+    serviceEnsureStarted: 10,
+    serviceSpawnRequested: 11,
+    serviceReady: 12,
+    backgroundLoadingReady: 13,
+    rendererViteConnected: 14,
+    rendererInitializationStarted: 15,
+    rendererInitializationReady: 16,
+    windowVisible: 17,
    homeReady: commandToHomeReadyMs,
  }
  return {
@@ -76,8 +80,8 @@ function sample(run: number, commandToHomeReadyMs: number): DesktopStartupSample
      electronStartup: 2,
      serviceSpawnWait: 1,
      serviceProcessStartup: 1,
-      rendererStartup: commandToHomeReadyMs - 15,
-      visibleWindowToHome: commandToHomeReadyMs - 11,
+      rendererStartup: commandToHomeReadyMs - 14,
+      visibleWindowToHome: commandToHomeReadyMs - 17,
    },
    service: { version: "2.0.0-local-test", url: "http://127.0.0.1:3000", pid: run },
  }
@@ -71,7 +71,7 @@ for (const direction of ["ltr", "rtl"] as const) {
    const shifted = await content.evaluate((element) => getComputedStyle(element).translate)
    await content.evaluate((element) => element.setAttribute("data-summary-motion", ""))
    // Keep issuing resize events before the idle timer expires, including crossing the width cutoff.
-    for (const width of [1520, 1280, 1800]) {
+    for (const width of [1520, 1280, 1600]) {
      await page.setViewportSize({ width, height: 900 })
      await expect(panel).toHaveAttribute("data-summary-resizing", "true")
      await page.clock.runFor(100)
@@ -84,7 +84,6 @@ for (const direction of ["ltr", "rtl"] as const) {
    await expect(content).toHaveAttribute("data-summary-motion", "transitionrun,transitionend,")
    await expect(content).not.toHaveCSS("translate", shifted)
    await page.setViewportSize({ width: 1440, height: 900 })
-    await expect(panel).toHaveAttribute("data-summary-resizing", "false")
    await expect(content).toHaveCSS("translate", shifted)

    await content.evaluate((element) => element.setAttribute("data-summary-motion", ""))
@@ -113,8 +112,7 @@ for (const direction of ["ltr", "rtl"] as const) {
    await expect(summary).toBeVisible()

    await page.setViewportSize({ width: 1800, height: 900 })
-    await expect(panel).toHaveAttribute("data-summary-resizing", "false")
-    await expect(content).toHaveCSS("translate", "none")
+    await expect(content).toHaveCSS("translate", "0px")
    await expect(summary).toBeVisible()

    await page.emulateMedia({ reducedMotion: "reduce" })
@@ -116,7 +116,7 @@ test("single-server settings expose scoped pages without a server picker", async
  await expect(connection.getByRole("heading", { name: "Connection", exact: true })).toBeVisible()
  await expect(connection.locator('[data-component="settings-list"]')).toHaveCSS("padding-left", "16px")
  await expect(connection.locator(".settings-servers-row")).toHaveCSS("padding-top", "20px")
-  await expect(connection.locator(".settings-servers-lead")).toHaveCSS("column-gap", "10px")
+  await expect(connection.locator(".settings-servers-lead")).toHaveCSS("column-gap", "4px")
  await expect(connection.locator(".settings-servers-copy")).toHaveCSS("row-gap", "6px")
  await expect(settings.getByRole("heading", { name: "Preferences", exact: true })).toBeVisible()
  await expect(settings.getByText("Terminal shell", { exact: true })).toBeVisible()
@@ -1,6 +1,6 @@
 {
  "name": "@opencode/app",
-  "version": "2.0.12",
+  "version": "2.0.10",
  "description": "",
  "type": "module",
  "exports": {
@@ -10,7 +10,8 @@
    "./i18n/desktop-native": "./src/runtime/i18n/desktop-native.ts",
    "./updater": "./src/shell/updates/types.ts",
    "./wsl/types": "./src/servers/wsl/types.ts",
-    "./ssh": "./src/servers/ssh/types.ts",
+    "./ssh": "./src/servers/ssh/types.ts",
+    "./ssh/schema": "./src/servers/ssh/schema.ts",
    "./vite": "./vite.js",
    "./index.css": "./src/index.css"
  },
@@ -94,3 +95,4 @@
    "tailwindcss": "4.3.3"
  }
 }
+
@@ -1,9 +1,8 @@
 import { describe, expect, test } from "bun:test"
 import type { Prompt } from "@/composer/state"
 import { prependHistoryEntry, removeHistoryEntry, type PromptHistoryComment } from "./entry"
-import { Schema } from "effect"
 import { PromptHistoryState } from "../schema"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"

 const DEFAULT_PROMPT: Prompt = [{ type: "text", content: "", start: 0, end: 0 }]

@@ -79,7 +78,7 @@ describe("Composer history", () => {

  test("upgrades stored prompt arrays once at the persistence boundary", () => {
    expect(
-      Schema.decodeUnknownSync(Persistence.withInitial(PromptHistoryState, { entries: [] }))({
+      Codec.decodeOrThrow(Codec.withInitial(PromptHistoryState, { entries: [] }), {
        entries: [text("stored")],
      }),
    ).toEqual({
@@ -1,6 +1,5 @@
 import { describe, expect, test } from "bun:test"
-import { Schema } from "effect"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"
 import { SessionMessage } from "@opencode/schema/session-message"
 import {
  CommentStore,
@@ -24,9 +23,8 @@ const comment = { id: "comment", path: "src/app.ts", selection: { start: 1, end:

 describe("composer persistence schemas", () => {
  test("defaults missing or invalid fields independently and normalizes the cursor", () => {
-    const decode = Schema.decodeUnknownSync(
-      Persistence.withInitial(ComposerStore, { prompt: DEFAULT_PROMPT, context: { items: [] } }),
-    )
+    const decode = (input: unknown) =>
+      Codec.decodeOrThrow(Codec.withInitial(ComposerStore, { prompt: DEFAULT_PROMPT, context: { items: [] } }), input)
    expect(decode({})).toEqual({ prompt: DEFAULT_PROMPT, context: { items: [] } })
    const value = decode({
      prompt: [null, { type: "unknown" }],
@@ -54,29 +52,30 @@ describe("composer persistence schemas", () => {
  })

  test("drops invalid parts without losing valid mentions or optional field recovery", () => {
-    const value = Schema.decodeUnknownSync(
-      Persistence.withInitial(ComposerStore, { prompt: DEFAULT_PROMPT, context: { items: [] } }),
-    )({
-      prompt: [
-        text,
-        { type: "agent", content: "@build", start: 5, end: 11, name: "build" },
-        { type: "skill", content: "@effect", start: 11, end: 18, id: "effect", name: "Effect" },
-        { type: "agent", content: "@broken", start: 18, end: 25, name: 42 },
-        {
-          type: "file",
-          path: "src/app.ts",
-          content: "@src/app.ts",
-          start: 18,
-          end: 29,
-          selection: { startLine: "broken" },
-          mime: 42,
-          filename: "app.ts",
-          source: { type: "invalid" },
-        },
-      ],
-      model: { providerID: "provider", modelID: "model", variant: null },
-      retry: { id: "msg_retry", agent: "build", providerID: "provider", modelID: "model", variant: false },
-    })
+    const value = Codec.decodeOrThrow(
+      Codec.withInitial(ComposerStore, { prompt: DEFAULT_PROMPT, context: { items: [] } }),
+      {
+        prompt: [
+          text,
+          { type: "agent", content: "@build", start: 5, end: 11, name: "build" },
+          { type: "skill", content: "@effect", start: 11, end: 18, id: "effect", name: "Effect" },
+          { type: "agent", content: "@broken", start: 18, end: 25, name: 42 },
+          {
+            type: "file",
+            path: "src/app.ts",
+            content: "@src/app.ts",
+            start: 18,
+            end: 29,
+            selection: { startLine: "broken" },
+            mime: 42,
+            filename: "app.ts",
+            source: { type: "invalid" },
+          },
+        ],
+        model: { providerID: "provider", modelID: "model", variant: null },
+        retry: { id: "msg_retry", agent: "build", providerID: "provider", modelID: "model", variant: false },
+      },
+    )
    expect(value.prompt.map((part) => part.type)).toEqual(["text", "agent", "skill", "file"])
    expect(value.prompt[3]).toEqual({
      type: "file",
@@ -94,9 +93,10 @@ describe("composer persistence schemas", () => {
      modelID: "model",
    })
    expect(
-      Schema.decodeUnknownSync(
-        Persistence.withInitial(ComposerStore, { prompt: DEFAULT_PROMPT, context: { items: [] } }),
-      )(Schema.encodeSync(ComposerStore)(value)),
+      Codec.decodeOrThrow(
+        Codec.withInitial(ComposerStore, { prompt: DEFAULT_PROMPT, context: { items: [] } }),
+        ComposerStore.encode(value),
+      ),
    ).toEqual(value)
  })

@@ -114,41 +114,44 @@ describe("composer persistence schemas", () => {
        text: sourceText,
      },
    ]
-    const value = Schema.decodeUnknownSync(
-      Persistence.withInitial(ComposerStore, { prompt: DEFAULT_PROMPT, context: { items: [] } }),
-    )({
-      prompt: sources.map((source) => ({
-        type: "file",
-        path: "src/app.ts",
-        content: "@source",
-        start: 0,
-        end: 7,
-        source,
-        selection: { startLine: 1, startChar: 0, endLine: 2, endChar: 1 },
-      })),
-    })
+    const value = Codec.decodeOrThrow(
+      Codec.withInitial(ComposerStore, { prompt: DEFAULT_PROMPT, context: { items: [] } }),
+      {
+        prompt: sources.map((source) => ({
+          type: "file",
+          path: "src/app.ts",
+          content: "@source",
+          start: 0,
+          end: 7,
+          source,
+          selection: { startLine: 1, startChar: 0, endLine: 2, endChar: 1 },
+        })),
+      },
+    )
    expect(value.prompt).toHaveLength(3)
    expect(value.prompt.map((part) => part.type === "file" && part.source)).toEqual(sources)
    expect(
-      Schema.decodeUnknownSync(
-        Persistence.withInitial(ComposerStore, { prompt: DEFAULT_PROMPT, context: { items: [] } }),
-      )(Schema.encodeSync(ComposerStore)(value)),
+      Codec.decodeOrThrow(
+        Codec.withInitial(ComposerStore, { prompt: DEFAULT_PROMPT, context: { items: [] } }),
+        ComposerStore.encode(value),
+      ),
    ).toEqual(value)
  })

  test("migrates inline images, keeps store references without a URL, and never encodes dataUrl", () => {
-    const value = Schema.decodeUnknownSync(
-      Persistence.withInitial(ComposerStore, { prompt: DEFAULT_PROMPT, context: { items: [] } }),
-    )({
-      prompt: [
-        { ...image, dataUrl: "data:image/png;base64,YQ==", sourcePath: "/image.png" },
-        { ...image, blob: { id: "data:image/png;base64,Yg==" } },
-        { ...image, blob: { id: "hash", url: "blob:hydrated" } },
-        { ...image, blob: { id: "missing" } },
-        { ...image, blob: { id: "bad", url: "https://example.com/image.png" } },
-        { ...image, blob: { id: "missing" }, dataUrl: "data:image/png;base64,YQ==" },
-      ],
-    })
+    const value = Codec.decodeOrThrow(
+      Codec.withInitial(ComposerStore, { prompt: DEFAULT_PROMPT, context: { items: [] } }),
+      {
+        prompt: [
+          { ...image, dataUrl: "data:image/png;base64,YQ==", sourcePath: "/image.png" },
+          { ...image, blob: { id: "data:image/png;base64,Yg==" } },
+          { ...image, blob: { id: "hash", url: "blob:hydrated" } },
+          { ...image, blob: { id: "missing" } },
+          { ...image, blob: { id: "bad", url: "https://example.com/image.png" } },
+          { ...image, blob: { id: "missing" }, dataUrl: "data:image/png;base64,YQ==" },
+        ],
+      },
+    )
    expect(value.prompt).toHaveLength(6)
    expect(value.prompt[0]).toEqual({
      ...image,
@@ -159,17 +162,18 @@ describe("composer persistence schemas", () => {
    expect(value.prompt[3]).toEqual({ ...image, blob: { id: "missing", url: "" } })
    expect(value.prompt[4]).toEqual({ ...image, blob: { id: "bad", url: "" } })
    expect(value.prompt[5]).toEqual({ ...image, blob: { id: "missing", url: "" } })
-    const encoded = Schema.encodeSync(ComposerStore)(value)
+    const encoded = ComposerStore.encode(value)
    expect(JSON.stringify(encoded)).not.toContain("dataUrl")
    expect(
-      Schema.decodeUnknownSync(
-        Persistence.withInitial(ComposerStore, { prompt: DEFAULT_PROMPT, context: { items: [] } }),
-      )(encoded),
+      Codec.decodeOrThrow(
+        Codec.withInitial(ComposerStore, { prompt: DEFAULT_PROMPT, context: { items: [] } }),
+        encoded,
+      ),
    ).toEqual(value)
  })

  test("migrates legacy history arrays and recovers entries, parts, and comments independently", () => {
-    const value = Schema.decodeUnknownSync(Persistence.withInitial(PromptHistoryState, { entries: [] }))({
+    const value = Codec.decodeOrThrow(Codec.withInitial(PromptHistoryState, { entries: [] }), {
      entries: [
        [text, null, { ...image, dataUrl: "data:image/png;base64,YQ==" }],
        null,
@@ -184,15 +188,13 @@ describe("composer persistence schemas", () => {
    expect(value.entries[0].comments).toEqual([])
    expect(value.entries[1]).toEqual({ prompt: [text], comments: [comment] })
    expect(value.entries[2]).toEqual({ prompt: [text], comments: [] })
-    const encoded = Schema.encodeSync(PromptHistoryState)(value)
+    const encoded = PromptHistoryState.encode(value)
    expect(encoded.entries?.every((entry) => !Array.isArray(entry))).toBe(true)
    expect(JSON.stringify(encoded)).not.toContain("dataUrl")
-    expect(Schema.decodeUnknownSync(Persistence.withInitial(PromptHistoryState, { entries: [] }))(encoded)).toEqual(
-      value,
+    expect(Codec.decodeOrThrow(Codec.withInitial(PromptHistoryState, { entries: [] }), encoded)).toEqual(value)
+    expect(Codec.decodeOrThrow(Codec.withInitial(PromptHistoryState, { entries: [] }), { entries: "invalid" })).toEqual(
+      { entries: [] },
    )
-    expect(
-      Schema.decodeUnknownSync(Persistence.withInitial(PromptHistoryState, { entries: [] }))({ entries: "invalid" }),
-    ).toEqual({ entries: [] })
  })

  test("recovers comments per file and entry without discarding healthy siblings", () => {
@@ -203,7 +205,7 @@ describe("composer persistence schemas", () => {
      comment: "note",
      time: 1,
    }
-    const value = Schema.decodeUnknownSync(Persistence.withInitial(CommentStore, { comments: {} }))({
+    const value = Codec.decodeOrThrow(Codec.withInitial(CommentStore, { comments: {} }), {
      comments: {
        "src/app.ts": [line, null, { ...line, time: "bad" }, { ...line, selection: { start: 2, end: 4, side: "bad" } }],
        "broken.ts": { invalid: true },
@@ -213,16 +215,14 @@ describe("composer persistence schemas", () => {
    expect(value.comments["src/app.ts"]).toEqual([line, { ...line, selection: { start: 2, end: 4 } }])
    expect(value.comments["broken.ts"]).toEqual([])
    expect(value.comments["healthy.ts"]).toEqual([{ ...line, file: "healthy.ts" }])
-    expect(
-      Schema.decodeUnknownSync(Persistence.withInitial(CommentStore, { comments: {} }))(
-        Schema.encodeSync(CommentStore)(value),
-      ),
-    ).toEqual(value)
-    expect(Schema.decodeUnknownSync(Persistence.withInitial(CommentStore, { comments: {} }))({})).toEqual({
+    expect(Codec.decodeOrThrow(Codec.withInitial(CommentStore, { comments: {} }), CommentStore.encode(value))).toEqual(
+      value,
+    )
+    expect(Codec.decodeOrThrow(Codec.withInitial(CommentStore, { comments: {} }), {})).toEqual({
+      comments: {},
+    })
+    expect(Codec.decodeOrThrow(Codec.withInitial(CommentStore, { comments: {} }), { comments: [] })).toEqual({
      comments: {},
    })
-    expect(Schema.decodeUnknownSync(Persistence.withInitial(CommentStore, { comments: {} }))({ comments: [] })).toEqual(
-      { comments: {} },
-    )
  })
 })
@@ -1,111 +1,133 @@
-import { Schema, SchemaGetter } from "effect"
 import { checksum } from "@opencode/util/encode"
-import { SessionMessage } from "@opencode/schema/session-message"
-import { Skill } from "@opencode/schema/skill"
-import { Persistence } from "@/runtime/persistence/schema"
+import type { SessionMessage } from "@opencode/schema/session-message"
+import type { Skill } from "@opencode/schema/skill"
+import { Codec } from "@/runtime/persistence/codec"
 import { FileSelection, SelectedLineRange } from "@/workspaces/files/types"

+// Identifiers defined by the shared Effect schemas keep their branded types; the renderer checks
+// them as strings so the shared schema module stays out of its startup path.
+const branded = <T extends string>() =>
+  Codec.make<T, string>(
+    (v) => (typeof v === "string" ? (v as T) : Codec.INVALID),
+    (v) => v,
+  )
+const SkillID = branded<typeof Skill.ID.Type>()
+const SkillName = branded<typeof Skill.Name.Type>()
+const MessageID = Codec.make<typeof SessionMessage.ID.Type, string>(
+  (v) => (typeof v === "string" && v.startsWith("msg_") ? (v as typeof SessionMessage.ID.Type) : Codec.INVALID),
+  (v) => v,
+)
+const nonEmptyString = Codec.make<string, string>(
+  (v) => (typeof v === "string" && v.length > 0 ? v : Codec.INVALID),
+  (v) => v,
+)
+
 const PartBase = {
-  content: Schema.String,
-  start: Schema.Number,
-  end: Schema.Number,
+  content: Codec.string,
+  start: Codec.number,
+  end: Codec.number,
 }

-const SourceText = Schema.Struct({ value: Schema.String, start: Schema.Number, end: Schema.Number })
-const Position = Schema.Struct({ line: Schema.Number, character: Schema.Number })
-const FilePartSource = Schema.Union([
-  Schema.Struct({ type: Schema.Literal("file"), text: SourceText, path: Schema.String }),
-  Schema.Struct({
-    type: Schema.Literal("symbol"),
+const SourceText = Codec.struct({ value: Codec.string, start: Codec.number, end: Codec.number })
+const Position = Codec.struct({ line: Codec.number, character: Codec.number })
+const FilePartSource = Codec.union([
+  Codec.struct({ type: Codec.literal("file"), text: SourceText, path: Codec.string }),
+  Codec.struct({
+    type: Codec.literal("symbol"),
    text: SourceText,
-    path: Schema.String,
-    range: Schema.Struct({ start: Position, end: Position }),
-    name: Schema.String,
-    kind: Schema.Number,
+    path: Codec.string,
+    range: Codec.struct({ start: Position, end: Position }),
+    name: Codec.string,
+    kind: Codec.number,
  }),
-  Schema.Struct({ type: Schema.Literal("resource"), text: SourceText, clientName: Schema.String, uri: Schema.String }),
+  Codec.struct({ type: Codec.literal("resource"), text: SourceText, clientName: Codec.string, uri: Codec.string }),
 ])

-export const TextPart = Persistence.struct({ type: Schema.Literal("text"), ...PartBase })
+export const TextPart = Codec.struct({ type: Codec.literal("text"), ...PartBase })
 export type TextPart = typeof TextPart.Type

-export const FileAttachmentPart = Persistence.struct({
-  type: Schema.Literal("file"),
+export const FileAttachmentPart = Codec.struct({
+  type: Codec.literal("file"),
  ...PartBase,
-  path: Schema.String,
-  selection: Persistence.optional(FileSelection),
-  mime: Persistence.optional(Schema.String),
-  filename: Persistence.optional(Schema.String),
-  url: Persistence.optional(Schema.String),
-  source: Persistence.optional(FilePartSource),
+  path: Codec.string,
+  selection: Codec.lenientOptional(FileSelection),
+  mime: Codec.lenientOptional(Codec.string),
+  filename: Codec.lenientOptional(Codec.string),
+  url: Codec.lenientOptional(Codec.string),
+  source: Codec.lenientOptional(FilePartSource),
 })
 export type FileAttachmentPart = typeof FileAttachmentPart.Type

-export const AgentPart = Persistence.struct({ type: Schema.Literal("agent"), ...PartBase, name: Schema.String })
+export const AgentPart = Codec.struct({ type: Codec.literal("agent"), ...PartBase, name: Codec.string })
 export type AgentPart = typeof AgentPart.Type

-export const SkillPart = Persistence.struct({
-  type: Schema.Literal("skill"),
+export const SkillPart = Codec.struct({
+  type: Codec.literal("skill"),
  ...PartBase,
-  id: Skill.ID,
-  name: Skill.Name,
+  id: SkillID,
+  name: SkillName,
 })
 export type SkillPart = typeof SkillPart.Type

 const ImageFields = {
-  type: Schema.Literal("image"),
-  id: Schema.String,
-  filename: Schema.String,
-  sourcePath: Persistence.optional(Schema.String),
-  mime: Schema.String,
+  type: Codec.literal("image"),
+  id: Codec.string,
+  filename: Codec.string,
+  sourcePath: Codec.lenientOptional(Codec.string),
+  mime: Codec.string,
 }
-const Image = Persistence.struct({
+const Image = Codec.struct({
  ...ImageFields,
  // An empty URL is an image whose bytes are still in the draft store; see `resolveBlobUrl`.
-  blob: Schema.Struct({ id: Schema.NonEmptyString, url: Schema.String.check(Schema.isPattern(/^(blob:|data:|$)/)) }),
+  blob: Codec.struct({
+    id: nonEmptyString,
+    url: Codec.make<string, string>(
+      (v) => (typeof v === "string" && /^(blob:|data:|$)/.test(v) ? v : Codec.INVALID),
+      (v) => v,
+    ),
+  }),
+})
+const StoredImage = Codec.struct({
+  ...ImageFields,
+  blob: Codec.lenientOptional(
+    Codec.struct({ id: Codec.lenientOptional(Codec.string), url: Codec.lenientOptional(Codec.string) }),
+  ),
+  dataUrl: Codec.lenientOptional(Codec.string),
 })

 // Draft storage keeps content-addressed blobs in the store until an image is shown or sent; a
 // reference without a URL resolves through `resolveBlobUrl`. Legacy inline data remains usable.
-export const ImageAttachmentPart = Schema.Struct({
-  ...ImageFields,
-  blob: Persistence.optional(
-    Schema.Struct({ id: Persistence.optional(Schema.String), url: Persistence.optional(Schema.String) }),
-  ),
-  dataUrl: Persistence.optional(Schema.String),
-}).pipe(
-  Schema.decodeTo(Schema.toType(Image), {
-    decode: SchemaGetter.transform((value) => {
-      const id = value.blob?.id ?? value.dataUrl ?? ""
-      const url = value.blob?.url
-      return {
-        type: value.type,
-        id: value.id,
-        filename: value.filename,
-        sourcePath: value.sourcePath,
-        mime: value.mime,
-        blob: {
-          id,
-          url: url?.startsWith("blob:") || url?.startsWith("data:") ? url : id.startsWith("data:") ? id : "",
-        },
-      }
-    }),
-    encode: SchemaGetter.transform((value) => value),
-  }),
-)
+export const ImageAttachmentPart = Codec.decodeTo(StoredImage, Image, {
+  decode: (value) => {
+    const id = value.blob?.id ?? value.dataUrl ?? ""
+    const url = value.blob?.url
+    return {
+      type: value.type,
+      id: value.id,
+      filename: value.filename,
+      sourcePath: value.sourcePath,
+      mime: value.mime,
+      blob: {
+        id,
+        url: url?.startsWith("blob:") || url?.startsWith("data:") ? url : id.startsWith("data:") ? id : "",
+      },
+    }
+  },
+  encode: (value) => value,
+})
 export type ImageAttachmentPart = typeof ImageAttachmentPart.Type

 // A file the model receives as a path on the server: its bytes never enter the draft store.
-export const PathAttachmentPart = Persistence.struct({
-  type: Schema.Literal("path"),
-  id: Schema.String,
-  filename: Schema.String,
-  mime: Schema.String,
-  path: Schema.String,
+export const PathAttachmentPart = Codec.struct({
+  type: Codec.literal("path"),
+  id: Codec.string,
+  filename: Codec.string,
+  mime: Codec.string,
+  path: Codec.string,
 })
 export type PathAttachmentPart = typeof PathAttachmentPart.Type

-export const ContentPart = Schema.Union([
+export const ContentPart = Codec.union([
  TextPart,
  FileAttachmentPart,
  AgentPart,
@@ -114,24 +136,24 @@ export const ContentPart = Schema.Union([
  PathAttachmentPart,
 ])
 export type ContentPart = typeof ContentPart.Type
-export const Prompt = Persistence.array(ContentPart)
+export const Prompt = Codec.lenientArray(ContentPart)
 export type Prompt = typeof Prompt.Type

-export const PromptModel = Persistence.struct({
-  providerID: Schema.String,
-  modelID: Schema.String,
-  variant: Persistence.optional(Schema.NullOr(Schema.String)),
+export const PromptModel = Codec.struct({
+  providerID: Codec.string,
+  modelID: Codec.string,
+  variant: Codec.lenientOptional(Codec.nullOr(Codec.string)),
 })
 export type PromptModel = typeof PromptModel.Type

-export const FileContextItem = Persistence.struct({
-  type: Schema.Literal("file"),
-  path: Schema.String,
-  selection: Persistence.optional(FileSelection),
-  comment: Persistence.optional(Schema.String),
-  commentID: Persistence.optional(Schema.String),
-  commentOrigin: Persistence.optional(Schema.Literals(["review", "file"])),
-  preview: Persistence.optional(Schema.String),
+export const FileContextItem = Codec.struct({
+  type: Codec.literal("file"),
+  path: Codec.string,
+  selection: Codec.lenientOptional(FileSelection),
+  comment: Codec.lenientOptional(Codec.string),
+  commentID: Codec.lenientOptional(Codec.string),
+  commentOrigin: Codec.lenientOptional(Codec.literals(["review", "file"])),
+  preview: Codec.lenientOptional(Codec.string),
 })
 export type FileContextItem = typeof FileContextItem.Type
 export type ContextItem = FileContextItem
@@ -145,86 +167,73 @@ export function contextItemKey(item: ContextItem) {
  return `${key}:c=${digest.slice(0, 8)}`
 }

-const ContextEntry = Schema.Struct({ ...FileContextItem.fields, key: Persistence.optional(Schema.String) }).pipe(
-  Schema.decodeTo(Persistence.struct({ ...FileContextItem.fields, key: Schema.String }).pipe(Schema.toType), {
-    decode: SchemaGetter.transform((item) => ({ ...item, key: contextItemKey(item) })),
-    encode: SchemaGetter.transform((item) => item),
-  }),
-)
+const StoredContextEntry = Codec.struct({ ...FileContextItem.fields, key: Codec.lenientOptional(Codec.string) })
+const ContextEntry = Codec.transform(StoredContextEntry, {
+  decode: (item) => ({ ...item, key: contextItemKey(item) }),
+  encode: (item) => item,
+})

 export const DEFAULT_PROMPT: Prompt = [{ type: "text", content: "", start: 0, end: 0 }]

-export const ComposerStore = Persistence.struct({
-  prompt: Prompt.pipe(
-    Schema.decode({
-      decode: SchemaGetter.transform((prompt) =>
-        prompt.length ? prompt : DEFAULT_PROMPT.map((part) => ({ ...part })),
-      ),
-      encode: SchemaGetter.transform((prompt) => prompt),
+const Cursor = Codec.transform(Codec.number, { decode: (cursor) => Math.max(0, cursor), encode: (cursor) => cursor })
+
+export const ComposerStore = Codec.struct({
+  prompt: Codec.transform(Prompt, {
+    decode: (prompt) => (prompt.length ? prompt : DEFAULT_PROMPT.map((part) => ({ ...part }))),
+    encode: (prompt) => prompt,
+  }),
+  cursor: Codec.lenientOptional(Cursor),
+  model: Codec.lenientOptional(PromptModel),
+  mode: Codec.lenientOptional(Codec.literals(["normal", "shell"])),
+  retry: Codec.lenientOptional(
+    Codec.struct({
+      id: MessageID,
+      agent: Codec.string,
+      providerID: Codec.string,
+      modelID: Codec.string,
+      variant: Codec.lenientOptional(Codec.string),
    }),
  ),
-  cursor: Persistence.optional(
-    Schema.Finite.pipe(
-      Schema.decode({
-        decode: SchemaGetter.transform((cursor) => Math.max(0, cursor)),
-        encode: SchemaGetter.transform((cursor) => cursor),
-      }),
-    ),
-  ),
-  model: Persistence.optional(PromptModel),
-  mode: Persistence.optional(Schema.Literals(["normal", "shell"])),
-  retry: Persistence.optional(
-    Schema.Struct({
-      id: SessionMessage.ID,
-      agent: Schema.String,
-      providerID: Schema.String,
-      modelID: Schema.String,
-      variant: Persistence.optional(Schema.String),
-    }),
-  ),
-  context: Persistence.struct({ items: Persistence.array(ContextEntry) }),
+  context: Codec.struct({ items: Codec.lenientArray(ContextEntry) }),
 })
 export type ComposerStore = typeof ComposerStore.Type

-export const LineComment = Persistence.struct({
-  id: Schema.String,
-  file: Schema.String,
+export const LineComment = Codec.struct({
+  id: Codec.string,
+  file: Codec.string,
  selection: SelectedLineRange,
-  comment: Schema.String,
-  time: Schema.Number,
+  comment: Codec.string,
+  time: Codec.number,
 })
 export type LineComment = typeof LineComment.Type

-export const CommentStore = Persistence.struct({
-  comments: Schema.Record(Schema.String, Schema.mutableKey(Persistence.array(LineComment))),
+export const CommentStore = Codec.struct({
+  comments: Codec.record(Codec.lenientArray(LineComment)),
 })
 export type CommentStore = typeof CommentStore.Type

-export const PromptHistoryComment = Persistence.struct({
-  id: Schema.String,
-  path: Schema.String,
+export const PromptHistoryComment = Codec.struct({
+  id: Codec.string,
+  path: Codec.string,
  selection: SelectedLineRange,
-  comment: Schema.String,
-  time: Schema.Number,
-  origin: Persistence.optional(Schema.Literals(["review", "file"])),
-  preview: Persistence.optional(Schema.String),
+  comment: Codec.string,
+  time: Codec.number,
+  origin: Codec.lenientOptional(Codec.literals(["review", "file"])),
+  preview: Codec.lenientOptional(Codec.string),
 })
 export type PromptHistoryComment = typeof PromptHistoryComment.Type

 // History entries require a prompt array; only its individual parts recover.
-const HistoryPrompt = Schema.Array(Persistence.fallback(Schema.UndefinedOr(ContentPart), () => undefined)).pipe(
-  Schema.decodeTo(Schema.toType(Prompt), {
-    decode: SchemaGetter.transform((parts) => parts.filter((part) => part !== undefined)),
-    encode: SchemaGetter.transform((parts) => parts),
-  }),
-)
-const HistoryEntry = Schema.Struct({ prompt: HistoryPrompt, comments: Persistence.array(PromptHistoryComment) })
-export const PromptHistoryEntry = Schema.Union([HistoryEntry, HistoryPrompt]).pipe(
-  Schema.decodeTo(Schema.toType(HistoryEntry), {
-    decode: SchemaGetter.transform((entry) => ("prompt" in entry ? entry : { prompt: entry, comments: [] })),
-    encode: SchemaGetter.transform((entry) => entry),
-  }),
-)
+const HistoryPrompt = Codec.transform(Codec.array(Codec.fallback(Codec.undefinedOr(ContentPart), () => undefined)), {
+  decode: (parts): Prompt => parts.filter((part) => part !== undefined),
+  encode: (parts) => parts,
+})
+const HistoryEntry = Codec.struct({ prompt: HistoryPrompt, comments: Codec.lenientArray(PromptHistoryComment) })
+export const PromptHistoryEntry = Codec.transform(Codec.union([HistoryEntry, HistoryPrompt]), {
+  decode: (entry): typeof HistoryEntry.Type => ("prompt" in entry ? entry : { prompt: entry, comments: [] }),
+  encode: (entry) => entry,
+})
 export type PromptHistoryEntry = typeof PromptHistoryEntry.Type

-export const PromptHistoryState = Persistence.struct({ entries: Persistence.array(PromptHistoryEntry) })
+export const PromptHistoryState = Codec.struct({ entries: Codec.lenientArray(PromptHistoryEntry) })
+
@@ -1,8 +1,7 @@
 import { describe, expect, test } from "bun:test"
 import { createRoot } from "solid-js"
 import { Skill } from "@opencode/schema/skill"
-import { Schema, Option } from "effect"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"
 import { createMemoryComposerState, DEFAULT_PROMPT } from "./state"
 import { ComposerStore } from "./schema"

@@ -32,51 +31,52 @@ describe("prompt state initialization", () => {
  })

  test("parses persisted state into one trusted current shape", () => {
-    const parsed = Schema.decodeUnknownSync(
-      Persistence.withInitial(ComposerStore, { prompt: DEFAULT_PROMPT, context: { items: [] } }),
-    )({
-      prompt: [
-        { type: "text", content: "hello", start: 0, end: 5 },
-        { type: "skill", id: "effect", name: "Effect", content: "@effect", start: 5, end: 12 },
-        { type: "image", id: "broken", filename: "broken.png", mime: "image/png", blob: { id: 42 } },
-        {
-          type: "image",
-          id: "missing-blob",
-          filename: "missing.png",
-          mime: "image/png",
-          blob: { id: "content-hash-without-a-url" },
-        },
-        {
-          type: "image",
-          id: "invalid-url",
-          filename: "invalid.png",
-          mime: "image/png",
-          blob: { id: "hash", url: "relative-url" },
-        },
-        {
-          type: "image",
-          id: "legacy",
-          filename: "legacy.png",
-          mime: "image/png",
-          dataUrl: "data:image/png;base64,AAA",
-        },
-      ],
-      cursor: -2,
-      model: { providerID: "anthropic", modelID: "claude", variant: "high" },
-      retry: { id: "invalid", agent: "build", providerID: "anthropic", modelID: "claude" },
-      context: {
-        items: [
+    const parsed = Codec.decodeOrThrow(
+      Codec.withInitial(ComposerStore, { prompt: DEFAULT_PROMPT, context: { items: [] } }),
+      {
+        prompt: [
+          { type: "text", content: "hello", start: 0, end: 5 },
+          { type: "skill", id: "effect", name: "Effect", content: "@effect", start: 5, end: 12 },
+          { type: "image", id: "broken", filename: "broken.png", mime: "image/png", blob: { id: 42 } },
          {
-            type: "file",
-            path: "src/app.ts",
-            selection: { startLine: 1, startChar: 0, endLine: 2, endChar: 3 },
-            comment: "Check this",
-            key: "untrusted",
+            type: "image",
+            id: "missing-blob",
+            filename: "missing.png",
+            mime: "image/png",
+            blob: { id: "content-hash-without-a-url" },
+          },
+          {
+            type: "image",
+            id: "invalid-url",
+            filename: "invalid.png",
+            mime: "image/png",
+            blob: { id: "hash", url: "relative-url" },
+          },
+          {
+            type: "image",
+            id: "legacy",
+            filename: "legacy.png",
+            mime: "image/png",
+            dataUrl: "data:image/png;base64,AAA",
          },
-          { type: "file", path: 42 },
        ],
+        cursor: -2,
+        model: { providerID: "anthropic", modelID: "claude", variant: "high" },
+        retry: { id: "invalid", agent: "build", providerID: "anthropic", modelID: "claude" },
+        context: {
+          items: [
+            {
+              type: "file",
+              path: "src/app.ts",
+              selection: { startLine: 1, startChar: 0, endLine: 2, endChar: 3 },
+              comment: "Check this",
+              key: "untrusted",
+            },
+            { type: "file", path: 42 },
+          ],
+        },
      },
-    })
+    )
    expect(parsed).toEqual({
      prompt: [
        { type: "text", content: "hello", start: 0, end: 5 },
@@ -119,6 +119,6 @@ describe("prompt state initialization", () => {
        ],
      },
    })
-    expect(Option.isNone(Schema.decodeUnknownOption(ComposerStore)("not an object"))).toBe(true)
+    expect(Codec.decodeOption(ComposerStore, "not an object")).toBeUndefined()
  })
 })
@@ -1,186 +1,190 @@
-import { useDirectoryPicker } from "@/workspaces/selection/picker"
-import { useServerActionsController } from "@/servers/registry/controller"
-import { useSettingsCommand } from "@/settings/command"
-import { useSettingsSurface } from "@/settings/surface"
-import { type LocalProject } from "@/shell/state/layout"
-import { useLanguage } from "@/runtime/i18n/language"
-import { usePlatform } from "@/runtime/platform/platform"
-import { ServerConnection } from "@/runtime/server/registry"
-import { closeHomeProject, errorMessage, homeProjectDirectories } from "@/shell/layout/helpers"
-import { Persist, persisted } from "@/runtime/persistence/storage"
-import { showToast } from "@/shell/notifications/toast"
-import { useDialog } from "@opencode/ui/context/dialog"
-import { createResource } from "solid-js"
-import { Schema } from "effect"
-import { Persistence } from "@/runtime/persistence/schema"
-import type { HomeController } from "../model"
-import { useGlobal } from "@/runtime/server/runtime"
-import { SessionTransfer } from "@opencode/schema/session-transfer"
-import { useSshAuthenticate } from "@/servers/ssh/authenticate"
-
-export const HomeServersSchema = Schema.Struct({
-  collapsed: Persistence.record(Persistence.fallback(Schema.Boolean, () => false)),
-})
-
-export function createHomeProjectsController(home: HomeController) {
-  const platform = usePlatform()
-  const pickDirectory = useDirectoryPicker()
-  const dialog = useDialog()
-  const language = useLanguage()
-  const openSettings = useSettingsCommand()
-  const settings = useSettingsSurface()
-  const serverManagement = useServerActionsController()
-  const global = useGlobal()
-  const authenticate = useSshAuthenticate()
-  const [_state, setState, _, ready] = persisted(Persist.global("home.servers"), HomeServersSchema, { collapsed: {} })
-  const [state] = createResource(
-    () => ready.promise ?? Promise.resolve(),
-    (promise) => promise.then(() => _state),
-    { initialValue: _state },
-  )
-  function directories(project: LocalProject) {
-    return [project.worktree, ...(project.sandboxes ?? [])]
-  }
-
-  function canRevealProject(conn: ServerConnection.Any) {
-    return platform.platform === "desktop" && !!platform.openPath && ServerConnection.local(conn)
-  }
-
-  function choose(conn: ServerConnection.Any) {
-    pickDirectory({
-      server: conn,
-      title: language.t("command.project.open"),
-      multiple: true,
-      onSelect: (result) => home.project.add(conn, homeProjectDirectories(result)),
-    })
-  }
-
-  return {
-    copy: {
-      language,
-    },
-    selection: {
-      value: home.selection.value,
-    },
-    server: {
-      list: home.server.list,
-      health: home.server.health,
-      projects: home.project.forServer,
-      collapsed: (conn: ServerConnection.Any) => state().collapsed[ServerConnection.key(conn)] ?? false,
-      toggleCollapsed: (conn: ServerConnection.Any) => {
-        const key = ServerConnection.key(conn)
-        setState("collapsed", key, !state().collapsed[key])
-      },
-      canDefault: serverManagement.defaults.available,
-      defaultKey: serverManagement.defaults.key,
-      setDefault: (conn: ServerConnection.Any | undefined) =>
-        serverManagement.defaults.set(conn ? ServerConnection.key(conn) : null),
-      canRemove: (conn: ServerConnection.Any) => serverManagement.connection.canRemove(ServerConnection.key(conn)),
-      remove: (conn: ServerConnection.Any) => serverManagement.connection.remove(ServerConnection.key(conn)),
-      canHide: (conn: ServerConnection.Any) => serverManagement.connection.canHide(ServerConnection.key(conn)),
-      hide: (conn: ServerConnection.Any) => serverManagement.connection.setHidden(ServerConnection.key(conn), true),
-      edit: (conn: ServerConnection.Http) => {
-        void import("@/servers/connect/dialog").then(({ DialogServer }) => {
-          void dialog.show(() => <DialogServer mode="edit" server={conn} />)
-        })
-      },
-      authenticate: (conn: ServerConnection.Any) => authenticate(conn),
-      focus: (conn: ServerConnection.Any) => {
-        if (authenticate(conn, () => home.selection.focusServer(conn))) return
-        home.selection.focusServer(conn)
-      },
-    },
-    project: {
-      list: home.project.list,
-      recentlyClosed: home.project.recentlyClosed,
-      homedir: home.project.homedir,
-      select: (conn: ServerConnection.Any, directory: string) => {
-        if (authenticate(conn, () => home.project.select(conn, directory))) return
-        home.project.select(conn, directory)
-      },
-      add: home.project.add,
-      openNewSession: (conn: ServerConnection.Any, directory: string) => {
-        if (authenticate(conn, () => home.project.openProjectNewSession(conn, directory))) return
-        home.project.openProjectNewSession(conn, directory)
-      },
-      canImportSession: !!platform.openAttachmentPickerDialog,
-      importSession: (conn: ServerConnection.Any, project: LocalProject) => {
-        if (!platform.openAttachmentPickerDialog) return
-        void platform
-          .openAttachmentPickerDialog(
-            {
-              title: language.t("command.session.import"),
-              accept: ["application/json"],
-              extensions: ["json"],
-            },
-            async (file) => {
-              const data = await Schema.decodeUnknownPromise(Schema.fromJsonString(SessionTransfer.Data))(
-                await file.text(),
-              )
-              const api = home.server.context(conn).sdk.api.session
-              const imported = await api.import({
-                ...Schema.encodeSync(SessionTransfer.Data)(data),
-                location: { directory: project.worktree },
-              } as Parameters<typeof api.import>[0])
-              home.project.openProjectSession(conn, project.worktree, imported)
-            },
-          )
-          .catch((cause: unknown) => {
-            showToast({
-              title: language.t("common.requestFailed"),
-              description: errorMessage(cause, language.t("common.requestFailed")),
-            })
-          })
-      },
-      edit: (conn: ServerConnection.Any, project: LocalProject) => {
-        settings.openProject({
-          server: ServerConnection.key(conn),
-          project: project.worktree,
-        })
-      },
-      unseenCount: (conn: ServerConnection.Any, project: LocalProject) => {
-        const notification = global.ensureServerCtx(conn).notification
-        return directories(project).reduce((total, directory) => total + notification.project.unseenCount(directory), 0)
-      },
-      clearNotifications: (conn: ServerConnection.Any, project: LocalProject) => {
-        const notification = global.ensureServerCtx(conn).notification
-        directories(project)
-          .filter((directory) => notification.project.unseenCount(directory) > 0)
-          .forEach((directory) => notification.project.markViewed(directory))
-      },
-      choose: (conn: ServerConnection.Any) => {
-        if (authenticate(conn, () => choose(conn))) return
-        if (home.server.health(conn)?.healthy === false) return
-        choose(conn)
-      },
-      close: (conn: ServerConnection.Any, directory: string) => {
-        const next = closeHomeProject(
-          home.selection.value(),
-          ServerConnection.key(conn),
-          home.server.context(conn).projects,
-          directory,
-        )
-        if (next) home.selection.set(next)
-      },
-      move: (conn: ServerConnection.Any, worktree: string, index: number) => {
-        home.server.context(conn).projects.move(worktree, index)
-      },
-      canReveal: canRevealProject,
-      reveal: (conn: ServerConnection.Any, project: LocalProject) => {
-        if (!platform.openPath || !canRevealProject(conn)) return
-        platform.openPath(project.worktree).catch((cause: unknown) =>
-          showToast({
-            title: language.t("common.requestFailed"),
-            description: errorMessage(cause, language.t("common.requestFailed")),
-          }),
-        )
-      },
-    },
-    utility: {
-      settings: openSettings,
-      help: () => platform.openExternal("https://opencode.ai/desktop-feedback"),
-    },
-  }
-}
-
-export type HomeProjectsController = ReturnType<typeof createHomeProjectsController>
+import { useDirectoryPicker } from "@/workspaces/selection/picker"
+import { useServerActionsController } from "@/servers/registry/controller"
+import { useSettingsCommand } from "@/settings/command"
+import { useSettingsSurface } from "@/settings/surface"
+import { type LocalProject } from "@/shell/state/layout"
+import { useLanguage } from "@/runtime/i18n/language"
+import { usePlatform } from "@/runtime/platform/platform"
+import { ServerConnection } from "@/runtime/server/registry"
+import { closeHomeProject, errorMessage, homeProjectDirectories } from "@/shell/layout/helpers"
+import { Persist, persisted } from "@/runtime/persistence/storage"
+import { showToast } from "@/shell/notifications/toast"
+import { useDialog } from "@opencode/ui/context/dialog"
+import { createResource } from "solid-js"
+import { Codec } from "@/runtime/persistence/codec"
+
+import type { HomeController } from "../model"
+import { useGlobal } from "@/runtime/server/runtime"
+
+import { useSshAuthenticate } from "@/servers/ssh/authenticate"
+
+export const HomeServersSchema = Codec.struct({
+  collapsed: Codec.lenientRecord(Codec.fallback(Codec.boolean, () => false)),
+})
+
+export function createHomeProjectsController(home: HomeController) {
+  const platform = usePlatform()
+  const pickDirectory = useDirectoryPicker()
+  const dialog = useDialog()
+  const language = useLanguage()
+  const openSettings = useSettingsCommand()
+  const settings = useSettingsSurface()
+  const serverManagement = useServerActionsController()
+  const global = useGlobal()
+  const authenticate = useSshAuthenticate()
+  const [_state, setState, _, ready] = persisted(Persist.global("home.servers"), HomeServersSchema, { collapsed: {} })
+  const [state] = createResource(
+    () => ready.promise ?? Promise.resolve(),
+    (promise) => promise.then(() => _state),
+    { initialValue: _state },
+  )
+  function directories(project: LocalProject) {
+    return [project.worktree, ...(project.sandboxes ?? [])]
+  }
+
+  function canRevealProject(conn: ServerConnection.Any) {
+    return platform.platform === "desktop" && !!platform.openPath && ServerConnection.local(conn)
+  }
+
+  function choose(conn: ServerConnection.Any) {
+    pickDirectory({
+      server: conn,
+      title: language.t("command.project.open"),
+      multiple: true,
+      onSelect: (result) => home.project.add(conn, homeProjectDirectories(result)),
+    })
+  }
+
+  return {
+    copy: {
+      language,
+    },
+    selection: {
+      value: home.selection.value,
+    },
+    server: {
+      list: home.server.list,
+      health: home.server.health,
+      projects: home.project.forServer,
+      collapsed: (conn: ServerConnection.Any) => state().collapsed[ServerConnection.key(conn)] ?? false,
+      toggleCollapsed: (conn: ServerConnection.Any) => {
+        const key = ServerConnection.key(conn)
+        setState("collapsed", key, !state().collapsed[key])
+      },
+      canDefault: serverManagement.defaults.available,
+      defaultKey: serverManagement.defaults.key,
+      setDefault: (conn: ServerConnection.Any | undefined) =>
+        serverManagement.defaults.set(conn ? ServerConnection.key(conn) : null),
+      canRemove: (conn: ServerConnection.Any) => serverManagement.connection.canRemove(ServerConnection.key(conn)),
+      remove: (conn: ServerConnection.Any) => serverManagement.connection.remove(ServerConnection.key(conn)),
+      canHide: (conn: ServerConnection.Any) => serverManagement.connection.canHide(ServerConnection.key(conn)),
+      hide: (conn: ServerConnection.Any) => serverManagement.connection.setHidden(ServerConnection.key(conn), true),
+      edit: (conn: ServerConnection.Http) => {
+        void import("@/servers/connect/dialog").then(({ DialogServer }) => {
+          void dialog.show(() => <DialogServer mode="edit" server={conn} />)
+        })
+      },
+      authenticate: (conn: ServerConnection.Any) => authenticate(conn),
+      focus: (conn: ServerConnection.Any) => {
+        if (authenticate(conn, () => home.selection.focusServer(conn))) return
+        home.selection.focusServer(conn)
+      },
+    },
+    project: {
+      list: home.project.list,
+      recentlyClosed: home.project.recentlyClosed,
+      homedir: home.project.homedir,
+      select: (conn: ServerConnection.Any, directory: string) => {
+        if (authenticate(conn, () => home.project.select(conn, directory))) return
+        home.project.select(conn, directory)
+      },
+      add: home.project.add,
+      openNewSession: (conn: ServerConnection.Any, directory: string) => {
+        if (authenticate(conn, () => home.project.openProjectNewSession(conn, directory))) return
+        home.project.openProjectNewSession(conn, directory)
+      },
+      canImportSession: !!platform.openAttachmentPickerDialog,
+      importSession: (conn: ServerConnection.Any, project: LocalProject) => {
+        if (!platform.openAttachmentPickerDialog) return
+        void platform
+          .openAttachmentPickerDialog(
+            {
+              title: language.t("command.session.import"),
+              accept: ["application/json"],
+              extensions: ["json"],
+            },
+            async (file) => {
+              const { decodeSessionTransfer } = await import("./import-session")
+              const data = await decodeSessionTransfer(await file.text())
+              const api = home.server.context(conn).sdk.api.session
+              const imported = await api.import({
+                ...data,
+                location: { directory: project.worktree },
+              } as Parameters<typeof api.import>[0])
+              home.project.openProjectSession(conn, project.worktree, imported)
+            },
+          )
+          .catch((cause: unknown) => {
+            showToast({
+              title: language.t("common.requestFailed"),
+              description: errorMessage(cause, language.t("common.requestFailed")),
+            })
+          })
+      },
+      edit: (conn: ServerConnection.Any, project: LocalProject) => {
+        settings.openProject({
+          server: ServerConnection.key(conn),
+          project: project.worktree,
+        })
+      },
+      unseenCount: (conn: ServerConnection.Any, project: LocalProject) => {
+        const notification = global.ensureServerCtx(conn).notification
+        return directories(project).reduce((total, directory) => total + notification.project.unseenCount(directory), 0)
+      },
+      clearNotifications: (conn: ServerConnection.Any, project: LocalProject) => {
+        const notification = global.ensureServerCtx(conn).notification
+        directories(project)
+          .filter((directory) => notification.project.unseenCount(directory) > 0)
+          .forEach((directory) => notification.project.markViewed(directory))
+      },
+      choose: (conn: ServerConnection.Any) => {
+        if (authenticate(conn, () => choose(conn))) return
+        if (home.server.health(conn)?.healthy === false) return
+        choose(conn)
+      },
+      close: (conn: ServerConnection.Any, directory: string) => {
+        const next = closeHomeProject(
+          home.selection.value(),
+          ServerConnection.key(conn),
+          home.server.context(conn).projects,
+          directory,
+        )
+        if (next) home.selection.set(next)
+      },
+      move: (conn: ServerConnection.Any, worktree: string, index: number) => {
+        home.server.context(conn).projects.move(worktree, index)
+      },
+      canReveal: canRevealProject,
+      reveal: (conn: ServerConnection.Any, project: LocalProject) => {
+        if (!platform.openPath || !canRevealProject(conn)) return
+        platform.openPath(project.worktree).catch((cause: unknown) =>
+          showToast({
+            title: language.t("common.requestFailed"),
+            description: errorMessage(cause, language.t("common.requestFailed")),
+          }),
+        )
+      },
+    },
+    utility: {
+      settings: openSettings,
+      help: () => platform.openExternal("https://opencode.ai/desktop-feedback"),
+    },
+  }
+}
+
+export type HomeProjectsController = ReturnType<typeof createHomeProjectsController>
+
+
+
+
+
@@ -0,0 +1,9 @@
+import { Schema } from "effect"
+import { SessionTransfer } from "@opencode/schema/session-transfer"
+
+// Loaded on demand when a session file is imported: validating it needs the shared Effect schema,
+// which stays out of the renderer's startup path this way.
+export async function decodeSessionTransfer(text: string) {
+  const data = await Schema.decodeUnknownPromise(Schema.fromJsonString(SessionTransfer.Data))(text)
+  return Schema.encodeSync(SessionTransfer.Data)(data)
+}
@@ -65,14 +65,14 @@
  }

  /* Keep the 1000px conversation intact, with 320px for the summary and its gutters.
-     When they overlap, center the conversation in the space that remains beside the summary. */
-  @container session-chat (min-width: 1320px) and (width < 1640px) {
+     Move only as far as needed; wider panels already have enough space in the margin. */
+  @container session-chat (min-width: 1320px) {
    [data-slot="session-chat-panel"][data-summary-open="true"]
      :is([data-timeline-virtual-content], [data-component="session-composer-dock"] > div) {
-      --session-summary-translate: -160px;
+      --session-summary-translate: min(0px, calc(50cqi - 820px));

      &:dir(rtl) {
-        --session-summary-translate: 160px;
+        --session-summary-translate: max(0px, calc(820px - 50cqi));
      }
    }
  }
@@ -5,7 +5,7 @@ import { Show, Suspense, createMemo, createSignal, lazy, onMount } from "solid-j
 import { createStore } from "solid-js/store"
 import { makeEventListener } from "@solid-primitives/event-listener"
 import { debounce } from "@solid-primitives/scheduled"
-import { Schema } from "effect"
+import { Codec } from "@/runtime/persistence/codec"
 import createPresence from "solid-presence"
 import { Composer } from "@/composer/composer"
 import { ComposerDropzone } from "@/composer/dropzone"
@@ -21,7 +21,6 @@ import { useWorkspaceLocation } from "@/workspaces/location"
 import { useProviders } from "@/providers/catalog/providers"
 import { NEW_SESSION_CONTENT_WIDTH } from "@/new-session/layout"
 import { Persist, persisted } from "@/runtime/persistence/storage"
-import { Persistence } from "@/runtime/persistence/schema"
 import type { NewSessionWorkspaceController } from "./workspace/controller"
 import { NewSessionWordmark } from "./wordmark"
 import { SummaryPopover } from "@/session/summary/popover"
@@ -34,12 +33,12 @@ const NewSessionSummary = lazy(async () => {

 const providerTipDismissalDuration = 30 * 24 * 60 * 60 * 1000

-export const WorkspaceOnboardingSchema = Persistence.struct({
-  used: Schema.Boolean,
+export const WorkspaceOnboardingSchema = Codec.struct({
+  used: Codec.boolean,
 })

-export const ProviderTipSchema = Persistence.struct({
-  dismissedAt: Schema.Finite,
+export const ProviderTipSchema = Codec.struct({
+  dismissedAt: Codec.number,
 })

 export const WorkspaceTipSchema = ProviderTipSchema
@@ -267,3 +266,4 @@ function NewSessionTips(props: { workspaceEligible: boolean; onWorkspace: () =>
    </Show>
  )
 }
+
@@ -1,7 +1,6 @@
 import { useData } from "@/runtime/server/current"
 import { useServerSDK } from "@/runtime/server/client"
 import { normalizeProviderList } from "@/runtime/server/global-sync/utils"
-import { Iterable, pipe } from "effect"
 import { createEffect, createMemo, type Accessor } from "solid-js"
 import type { ProviderListResponse } from "@/runtime/server/types"
 import { useIntegrations } from "./integrations"
@@ -53,34 +52,24 @@ export function useProviders(directory: Accessor<string | undefined>) {
        .filter((integration) => popularProviderSet.has(integration.id))
        .map((integration) => ({ id: integration.id, name: integration.name }))
      const seen = new Set(catalog.map((integration) => integration.id))
-      return pipe(
-        providers().all,
-        Iterable.map(([, p]) => p),
-        Iterable.filter((p) => popularProviderSet.has(p.id) && !seen.has(p.id)),
-        Iterable.map((p) => ({ id: p.id, name: p.name })),
-        (v) => [...catalog, ...v],
-      )
+      const more = [...providers().all.values()]
+        .filter((p) => popularProviderSet.has(p.id) && !seen.has(p.id))
+        .map((p) => ({ id: p.id, name: p.name }))
+      return [...catalog, ...more]
    },
    connected: () => {
      const connected = new Set(providers().connected)
-      return pipe(
-        providers().all,
-        Iterable.map(([, p]) => p),
-        Iterable.filter((p) => connected.has(p.id)),
-        (v) => Array.from(v),
-      )
+      return [...providers().all.values()].filter((p) => connected.has(p.id))
    },
    paid: () => {
      const connected = new Set(providers().connected)
-      const paid = [
-        ...Iterable.filter(
-          providers().all,
-          ([id]) =>
-            connected.has(id) &&
-            (id !== "opencode" || Object.values(providers().all.get(id)?.models ?? {}).some((m) => m.cost?.input)),
-        ),
-      ]
+      const paid = [...providers().all].filter(
+        ([id]) =>
+          connected.has(id) &&
+          (id !== "opencode" || Object.values(providers().all.get(id)?.models ?? {}).some((m) => m.cost?.input)),
+      )
      return paid
    },
  }
 }
+
@@ -3,12 +3,11 @@ import { base64Encode } from "@opencode/util/encode"
 import { useParams } from "@solidjs/router"
 import { batch, createEffect, createMemo, onCleanup } from "solid-js"
 import { createStore } from "solid-js/store"
-import { Schema, SchemaGetter } from "effect"
+import { Codec } from "@/runtime/persistence/codec"
 import { useModels } from "@/providers/models/models"
 import { useSettings } from "@/settings/model"
 import { useProviders } from "@/providers/catalog/providers"
 import { Persist, persisted } from "@/runtime/persistence/storage"
-import { Persistence } from "@/runtime/persistence/schema"
 import { hasCustomAgent, resolveAgent } from "./agent"
 import { cycleModelVariant, getConfiguredAgentVariant, resolveModelVariant } from "./variant"
 import { useWorkspaceLocation } from "@/workspaces/location"
@@ -18,46 +17,45 @@ import { useServerSDK } from "@/runtime/server/client"
 import { ScopedKey, type ServerScope } from "@/runtime/server/scope"
 import { useConfiguredModel } from "./configured"

-const ModelKeySchema = Schema.Struct({
-  providerID: Schema.String,
-  modelID: Schema.String,
-  variant: Schema.optional(Schema.String),
+const ModelKeySchema = Codec.struct({
+  providerID: Codec.string,
+  modelID: Codec.string,
+  variant: Codec.optional(Codec.string),
 })
 export type ModelKey = typeof ModelKeySchema.Type

-const ChoiceSchema = Schema.Struct({
-  model: Persistence.optional(ModelKeySchema),
-  variant: Persistence.optional(Schema.NullOr(Schema.String)),
+const ChoiceSchema = Codec.struct({
+  model: Codec.lenientOptional(ModelKeySchema),
+  variant: Codec.lenientOptional(Codec.nullOr(Codec.string)),
 })
-const StateSchema = Schema.Struct({
+const StateSchema = Codec.struct({
  ...ChoiceSchema.fields,
-  agent: Persistence.optional(Schema.String),
-  choices: Persistence.optional(Schema.Record(Schema.String, ChoiceSchema)),
+  agent: Codec.lenientOptional(Codec.string),
+  choices: Codec.lenientOptional(Codec.record(ChoiceSchema)),
 })
 type State = typeof StateSchema.Type

-const SessionsSchema = Schema.Record(
-  Schema.String,
-  Schema.mutableKey(Persistence.fallback(Schema.UndefinedOr(StateSchema), () => undefined)),
+const SessionsSchema = Codec.record(Codec.fallback(Codec.undefinedOr(StateSchema), () => undefined))
+
+const Current = Codec.struct({ session: SessionsSchema })
+const StoredSelection = Codec.struct(
+  {
+    session: Codec.lenientOptional(Codec.record(Codec.unknown)),
+    pick: Codec.lenientOptional(Codec.record(Codec.unknown)),
+  },
+  { preserve: true },
 )

-const Current = Persistence.struct({ session: SessionsSchema })
-
-export const ModelSelectionSchema = Persistence.migrate(
+export const ModelSelectionSchema = Codec.migrate(
  Current,
-  Schema.Struct({
-    session: Persistence.optional(Schema.Record(Schema.String, Schema.Unknown)),
-    pick: Persistence.optional(Schema.Record(Schema.String, Schema.Unknown)),
-  }).pipe(
-    Schema.decode({
-      decode: SchemaGetter.transform((value) => ({
-        session:
-          value.session ??
-          Object.fromEntries(Object.entries(value.pick ?? {}).filter(([key]) => key !== WORKSPACE_KEY)),
-      })),
-      encode: SchemaGetter.transform((value) => value),
+  Codec.transform(StoredSelection, {
+    decode: (value) => ({
+      ...value,
+      session:
+        value.session ?? Object.fromEntries(Object.entries(value.pick ?? {}).filter(([key]) => key !== WORKSPACE_KEY)),
    }),
-  ),
+    encode: (value) => value,
+  }),
 )

 const WORKSPACE_KEY = "__workspace__"
@@ -625,16 +625,6 @@ export const dict = {
  "toast.file.loadFailed.title": "Failed to load file",
  "file.error.notFound": "File not found: {{name}}",
  "toast.file.listFailed.title": "Failed to list files",
-  "file.view.preview": "Preview",
-  "file.view.source": "Source",
-  "file.view.openInBrowser": "Open in browser",
-  "file.view.binary": "Binary file · {{size}}",
-  "file.view.table.rows.one": "{{count}} row",
-  "file.view.table.rows.other": "{{count}} rows",
-  "file.view.table.columns.one": "{{count}} column",
-  "file.view.table.columns.other": "{{count}} columns",
-  "file.view.table.truncated": "Showing the first {{shown}} of {{total}} rows.",
-  "file.view.fontSample": "Sphinx of black quartz, judge my vow.",

  "toast.context.noLineSelection.title": "No line selection",
  "toast.context.noLineSelection.description": "Select a line range in a file tab first.",
@@ -916,10 +906,6 @@ export const dict = {
  "session.browser.replaced": "Browser control moved to another desktop window.",
  "session.browser.suspended": "Browser suspended. Interact with this session to reconnect.",
  "session.browser.address.placeholder": "Enter URL",
-  "session.browser.empty.title": "Enter URL",
-  "session.browser.empty.description": 'Or prompt "Open in the app browser"',
-  "session.browser.failed.title": "URL can't be reached",
-  "session.browser.failed.description": "Check the URL and your connection, then try again.",

  "titlebar.update": "Update",
  "titlebar.tabs": "Tabs",
@@ -1,7 +1,7 @@
 import { flatten, resolveTemplate, translator, type Flatten } from "@solid-primitives/i18n"
 import { createEffect, createMemo, createResource, type JSX } from "solid-js"
 import { createStore } from "solid-js/store"
-import { Option, Schema, SchemaGetter } from "effect"
+import { Codec } from "@/runtime/persistence/codec"
 import { createSimpleContext } from "@opencode/ui/context"
 import {
  I18nProvider,
@@ -12,7 +12,6 @@ import {
  type UiPluralCategory,
 } from "@opencode/ui/context/i18n"
 import { Persist, persisted } from "@/runtime/persistence/storage"
-import { Persistence } from "@/runtime/persistence/schema"
 import en from "@/runtime/i18n/en"
 import { dict } from "@opencode/ui/i18n/en"
 import {
@@ -56,14 +55,9 @@ function cookie(locale: Locale) {

 const LOCALES: readonly Locale[] = DESKTOP_NATIVE_LOCALES

-const LocaleSchema = Schema.Literals(DESKTOP_NATIVE_LOCALES)
-const StoredLocaleSchema = Schema.Struct({
-  locale: Schema.String.pipe(
-    Schema.decodeTo(LocaleSchema, {
-      decode: SchemaGetter.transform(normalizeLocale),
-      encode: SchemaGetter.transform((locale) => locale),
-    }),
-  ),
+const LocaleSchema = Codec.literals(DESKTOP_NATIVE_LOCALES)
+const StoredLocaleSchema = Codec.struct({
+  locale: Codec.transform(Codec.string, { decode: normalizeLocale, encode: (locale) => locale }),
 })

 const INTL = DESKTOP_NATIVE_LOCALE_TAGS
@@ -160,11 +154,11 @@ function detectLocale(): Locale {
 }

 export function normalizeLocale(value: string): Locale {
-  return Option.getOrElse(Schema.decodeUnknownOption(LocaleSchema)(value), () => "en")
+  return Codec.decodeOption(LocaleSchema, value) ?? "en"
 }

-export const languageSchema = Persistence.struct({
-  locale: StoredLocaleSchema.fields.locale,
+export const languageSchema = Codec.struct({
+  locale: StoredLocaleSchema.fields.locale,
 })

 function readStoredLocale() {
@@ -172,9 +166,7 @@ function readStoredLocale() {
  try {
    const raw = localStorage.getItem("opencode.global.dat:language")
    if (!raw) return
-    const next = Schema.decodeUnknownOption(Schema.fromJsonString(StoredLocaleSchema))(raw)
-    if (Option.isNone(next)) return
-    return next.value.locale
+    return Codec.decodeOption(Codec.fromJsonString(StoredLocaleSchema), raw)?.locale
  } catch {
    return
  }
@@ -296,3 +288,4 @@ export function UiI18nBridge(props: { children?: JSX.Element }) {
    </I18nProvider>
  )
 }
+
@@ -0,0 +1,17 @@
+import { expect, test } from "bun:test"
+import { Codec } from "./codec"
+
+// Type-level checks: these compile only if inference matches what `typeof schema.Type` gave callers.
+test("struct types infer optional and required fields", () => {
+  const s = Codec.struct({ id: Codec.string, tab: Codec.optional(Codec.string), n: Codec.lenientOptional(Codec.number) })
+  const value: typeof s.Type = { id: "x" }
+  const tab: string | undefined = value.tab
+  const n: number | undefined = value.n
+  const t = Codec.transform(s, { decode: (old) => old.tab ?? old.id, encode: (v) => ({ id: v }) })
+  const out: string | Codec.Invalid = t.decode({ id: "a" })
+  const onlyOptional = Codec.struct({ tab: Codec.optional(Codec.string) })
+  const empty: typeof onlyOptional.Type = {}
+  const maybe: string | undefined = empty.tab
+  const viaTransform = Codec.transform(onlyOptional, { decode: (old) => old.tab, encode: (tab) => ({ tab }) })
+  expect([tab, n, out, maybe, viaTransform.decode({})]).toEqual([undefined, undefined, "a", undefined, undefined])
+})
@@ -0,0 +1,85 @@
+import { describe, expect, test } from "bun:test"
+import { Codec } from "./codec"
+
+describe("Codec", () => {
+  test("primitives reject the wrong shape and finite numbers only", () => {
+    expect(Codec.string.decode("a")).toBe("a")
+    expect(Codec.string.decode(1)).toBe(Codec.INVALID)
+    expect(Codec.number.decode(1.5)).toBe(1.5)
+    expect(Codec.number.decode(Number.NaN)).toBe(Codec.INVALID)
+    expect(Codec.nonNegativeInt.decode(-1)).toBe(Codec.INVALID)
+    expect(Codec.literals(["a", "b"]).decode("c")).toBe(Codec.INVALID)
+    expect(Codec.literal("x").decode("x")).toBe("x")
+  })
+
+  test("struct keeps optional fields absent and rejects invalid required ones", () => {
+    const codec = Codec.struct({ id: Codec.string, title: Codec.optional(Codec.string), n: Codec.lenientOptional(Codec.number) })
+    expect(codec.decode({ id: "1" })).toEqual({ id: "1" })
+    expect(codec.decode({ id: "1", title: "t", n: "bad" })).toEqual({ id: "1", title: "t" })
+    expect(codec.decode({ id: "1", title: 3 })).toBe(Codec.INVALID)
+    expect(codec.decode({ title: "t" })).toBe(Codec.INVALID)
+    expect(codec.decode([])).toBe(Codec.INVALID)
+    expect(codec.encode({ id: "1" })).toEqual({ id: "1" })
+    const value: typeof codec.Type = { id: "1", title: undefined }
+    expect(value.id).toBe("1")
+  })
+
+  test("lenient collections recover what they can", () => {
+    const items = Codec.lenientArray(Codec.struct({ id: Codec.string }))
+    expect(items.decode([{ id: "a" }, { id: 1 }, "x", { id: "b" }])).toEqual([{ id: "a" }, { id: "b" }])
+    expect(items.decode("nope")).toEqual([])
+    expect(Codec.array(Codec.string).decode(["a", 1])).toBe(Codec.INVALID)
+    const map = Codec.lenientRecord(Codec.boolean)
+    expect(map.decode({ a: true, b: "x" })).toEqual({})
+    expect(map.decode({ a: true })).toEqual({ a: true })
+  })
+
+  test("union, transform and fallback compose", () => {
+    const session = Codec.struct({ type: Codec.literal("session"), id: Codec.string })
+    const draft = Codec.struct({ type: Codec.literal("draft"), directory: Codec.string })
+    const tab = Codec.union([session, draft])
+    expect(tab.decode({ type: "draft", directory: "/x" })).toEqual({ type: "draft", directory: "/x" })
+    expect(tab.decode({ type: "other" })).toBe(Codec.INVALID)
+    const upper = Codec.transform(Codec.string, { decode: (s) => s.toUpperCase(), encode: (s) => s.toLowerCase() })
+    expect(upper.decode("ab")).toBe("AB")
+    expect(upper.encode("AB")).toBe("ab")
+    const safe = Codec.fallback(Codec.number, () => 7)
+    expect(safe.decode("x")).toBe(7)
+    expect(safe.decode(undefined)).toBe(7)
+    expect(safe.decode(2)).toBe(2)
+  })
+
+  test("brand constructs and decodes as its base", () => {
+    const Key = Codec.brand<"ServerConnection.Key">()
+    const key = Key.make("http://a")
+    expect(Key.decode(key)).toBe(key)
+    expect(Key.decode(3)).toBe(Codec.INVALID)
+  })
+
+  test("withInitial recovers field by field and merges new defaults", () => {
+    const layout = Codec.struct({
+      sidebar: Codec.struct({ opened: Codec.boolean, width: Codec.number }),
+      theme: Codec.lenientOptional(Codec.literals(["light", "dark"])),
+    })
+    const initial: typeof layout.Type = { sidebar: { opened: true, width: 240 } }
+    const codec = Codec.fromJsonString(Codec.withInitial(layout, initial))
+    expect(codec.decode(JSON.stringify({ sidebar: { opened: false, width: "wide" }, theme: "dark" }))).toEqual({
+      sidebar: { opened: false, width: 240 },
+      theme: "dark",
+    })
+    expect(codec.decode(JSON.stringify({ sidebar: 5 }))).toEqual(initial)
+    expect(codec.decode("{not json")).toBe(Codec.INVALID)
+    expect(JSON.parse(codec.encode({ sidebar: { opened: true, width: 1 } }))).toEqual({ sidebar: { opened: true, width: 1 } })
+  })
+
+  test("migrate reads the old shape first", () => {
+    const current = Codec.struct({ tabs: Codec.array(Codec.string) })
+    const previous = Codec.struct({ tab: Codec.optional(Codec.string) })
+    const read = Codec.transform(previous, {
+      decode: (old) => ({ tabs: old.tab ? [old.tab] : [] }),
+      encode: (value) => ({ tab: value.tabs[0] }),
+    })
+    const codec = Codec.withInitial(Codec.migrate(current, read), { tabs: [] })
+    expect(codec.decode({ tab: "a" })).toEqual({ tabs: ["a"] })
+  })
+})
@@ -0,0 +1,369 @@
+export * as Codec from "./codec"
+
+// Plain codecs for persisted state. They replace Effect Schema in the renderer's initial module
+// graph, where Effect's own module initialisation was the single largest startup cost that was not
+// rendering. Semantics mirror the Persistence helpers: decoding never throws, `INVALID` marks a
+// value that cannot be recovered, and the lenient combinators recover what they can.
+
+export const INVALID: unique symbol = Symbol.for("opencode/persistence/codec/invalid")
+export type Invalid = typeof INVALID
+
+const tag: unique symbol = Symbol.for("opencode/persistence/codec")
+
+export interface Of<T, E = unknown> {
+  readonly [tag]: true
+  /** Phantom: `typeof codec.Type` is the decoded type, as with Effect schemas. */
+  readonly Type: T
+  readonly Encoded: E
+  readonly optional?: boolean
+  decode(input: unknown): T | Invalid
+  encode(value: T): E
+}
+
+export type Any = Of<any, any>
+export type Type<C extends Any> = C["Type"]
+
+export function isCodec(value: unknown): value is Any {
+  return typeof value === "object" && value !== null && tag in value
+}
+
+export function make<T, E = unknown>(decode: (input: unknown) => T | Invalid, encode: (value: T) => E): Of<T, E> {
+  return { [tag]: true, decode, encode } as Of<T, E>
+}
+
+export function is<T>(codec: Of<T>, input: unknown): input is T {
+  return codec.decode(input) !== INVALID
+}
+
+export function decodeOption<T>(codec: Of<T>, input: unknown): T | undefined {
+  const value = codec.decode(input)
+  return value === INVALID ? undefined : value
+}
+
+export function decodeOrThrow<T>(codec: Of<T>, input: unknown): T {
+  const value = codec.decode(input)
+  if (value === INVALID) throw new Error("Value does not match its codec")
+  return value
+}
+
+/** Encodes and checks the result decodes, so an invalid in-memory value fails loudly instead of persisting. */
+export function encodeOrThrow<T, E>(codec: Of<T, E>, value: T): E {
+  const encoded = codec.encode(value)
+  if (codec.decode(encoded) === INVALID) throw new Error("Value does not match its codec")
+  return encoded
+}
+
+const identity = <T>(value: T) => value
+
+export const string: Of<string, string> = make((v) => (typeof v === "string" ? v : INVALID), identity)
+export const boolean: Of<boolean, boolean> = make((v) => (typeof v === "boolean" ? v : INVALID), identity)
+export const unknown: Of<unknown, unknown> = make((v) => v, identity)
+/** Finite numbers only: NaN and infinities are not JSON and never valid state. */
+export const number: Of<number, number> = make((v) => (typeof v === "number" && Number.isFinite(v) ? v : INVALID), identity)
+export const int: Of<number, number> = make((v) => (typeof v === "number" && Number.isInteger(v) ? v : INVALID), identity)
+export const nonNegativeInt: Of<number, number> = make(
+  (v) => (typeof v === "number" && Number.isInteger(v) && v >= 0 ? v : INVALID),
+  identity,
+)
+
+export function literal<const L extends string | number | boolean | null>(value: L): Of<L, L> {
+  return make((v) => (v === value ? value : INVALID), identity)
+}
+
+export function literals<const L extends ReadonlyArray<string | number | boolean | null>>(values: L): Of<L[number], L[number]> {
+  const set = new Set<unknown>(values)
+  return make((v) => (set.has(v) ? (v as L[number]) : INVALID), identity)
+}
+
+/** A string carrying a nominal brand, with the constructor Effect's `Schema.brand` gave callers. */
+export function brand<B extends string>(): Of<string & { readonly [K in B]: B }, string> & {
+  make(value: string): string & { readonly [K in B]: B }
+} {
+  return Object.assign(make<string & { readonly [K in B]: B }, string>((v) => (typeof v === "string" ? (v as never) : INVALID), identity), {
+    make: (value: string) => value as never,
+  })
+}
+
+export function nullOr<T, E>(codec: Of<T, E>): Of<T | null, E | null> {
+  return make((v) => (v === null ? null : codec.decode(v)), (v) => (v === null ? null : codec.encode(v)))
+}
+
+export function undefinedOr<T, E>(codec: Of<T, E>): Of<T | undefined, E | undefined> {
+  return make((v) => (v === undefined ? undefined : codec.decode(v)), (v) => (v === undefined ? undefined : codec.encode(v)))
+}
+
+/** A struct field that may be absent. Present but invalid values make the struct invalid. */
+export function optional<T, E>(codec: Of<T, E>): Of<T | undefined, E | undefined> & { readonly optional: true } {
+  return { ...undefinedOr(codec), optional: true } as never
+}
+
+/** A struct field that may be absent, and whose invalid values are dropped rather than rejected. */
+export function lenientOptional<T, E>(codec: Of<T, E>): Of<T | undefined, E | undefined> & { readonly optional: true } {
+  return {
+    ...make<T | undefined, E | undefined>(
+      (v) => {
+        if (v === undefined) return undefined
+        const value = codec.decode(v)
+        return value === INVALID ? undefined : value
+      },
+      (v) => (v === undefined ? undefined : codec.encode(v)),
+    ),
+    optional: true,
+  } as never
+}
+
+type Fields = Record<string, Any>
+type OptionalKeys<F extends Fields> = { [K in keyof F]: F[K] extends { optional: true } ? K : never }[keyof F]
+type RequiredKeys<F extends Fields> = Exclude<keyof F, OptionalKeys<F>>
+type Simplify<T> = { [K in keyof T]: T[K] } & {}
+export type StructType<F extends Fields> = Simplify<
+  { [K in RequiredKeys<F>]: F[K]["Type"] } & { [K in OptionalKeys<F>]?: F[K]["Type"] }
+>
+export type StructEncoded<F extends Fields> = Simplify<
+  { [K in RequiredKeys<F>]: F[K]["Encoded"] } & { [K in OptionalKeys<F>]?: F[K]["Encoded"] }
+>
+
+export interface Struct<F extends Fields> extends Of<StructType<F>, StructEncoded<F>> {
+  readonly fields: F
+}
+
+// `preserve` keeps keys the struct does not declare, for migration shapes that only describe the
+// fields they rewrite (Effect's `onExcessProperty: "preserve"`); the current schema then decides.
+export function struct<const F extends Fields>(fields: F, options?: { preserve?: boolean }): Struct<F> {
+  const entries = Object.entries(fields)
+  return {
+    ...make<StructType<F>, StructEncoded<F>>(
+      (input) => {
+        if (typeof input !== "object" || input === null || Array.isArray(input)) return INVALID
+        const record = input as Record<string, unknown>
+        const out: Record<string, unknown> = options?.preserve ? { ...record } : {}
+        for (const [key, codec] of entries) {
+          const present = Object.hasOwn(record, key)
+          if (!present && codec.optional) continue
+          const value = codec.decode(record[key])
+          if (value === INVALID) return INVALID
+          // An optional field that decodes to undefined is absent, as with Effect's optional keys.
+          if (value !== undefined || (present && !codec.optional)) out[key] = value
+          else delete out[key]
+        }
+        return out as StructType<F>
+      },
+      (value) => {
+        const out: Record<string, unknown> = {}
+        for (const [key, codec] of entries) {
+          const field = (value as Record<string, unknown>)[key]
+          if (field === undefined && !Object.hasOwn(value as object, key)) continue
+          out[key] = codec.encode(field)
+        }
+        return out as StructEncoded<F>
+      },
+    ),
+    fields,
+  }
+}
+
+export function array<T, E>(codec: Of<T, E>): Of<T[], E[]> {
+  return make(
+    (input) => {
+      if (!Array.isArray(input)) return INVALID
+      const out: T[] = []
+      for (const item of input) {
+        const value = codec.decode(item)
+        if (value === INVALID) return INVALID
+        out.push(value)
+      }
+      return out
+    },
+    (value) => value.map((item) => codec.encode(item)),
+  )
+}
+
+/** Keeps the items that decode and drops the rest, like `Persistence.array`. */
+export function lenientArray<T, E>(codec: Of<T, E>): Of<T[], E[]> {
+  return make(
+    (input) => {
+      if (!Array.isArray(input)) return []
+      return input.flatMap((item) => {
+        const value = codec.decode(item)
+        return value === INVALID ? [] : [value]
+      })
+    },
+    (value) => value.map((item) => codec.encode(item)),
+  )
+}
+
+export function record<T, E>(codec: Of<T, E>): Of<Record<string, T>, Record<string, E>> {
+  return make(
+    (input) => {
+      if (typeof input !== "object" || input === null || Array.isArray(input)) return INVALID
+      const out: Record<string, T> = {}
+      for (const [key, item] of Object.entries(input)) {
+        const value = codec.decode(item)
+        if (value === INVALID) return INVALID
+        out[key] = value
+      }
+      return out
+    },
+    (value) => Object.fromEntries(Object.entries(value).map(([key, item]) => [key, codec.encode(item)])),
+  )
+}
+
+/** A record that drops entries whose values are invalid, the replacement for `catchDecoding` to none. */
+export function sparseRecord<T, E>(codec: Of<T, E>): Of<Record<string, T>, Record<string, E>> {
+  return make(
+    (input) => {
+      if (typeof input !== "object" || input === null || Array.isArray(input)) return INVALID
+      const out: Record<string, T> = {}
+      for (const [key, item] of Object.entries(input)) {
+        const value = codec.decode(item)
+        if (value !== INVALID) out[key] = value
+      }
+      return out
+    },
+    (value) => Object.fromEntries(Object.entries(value).map(([key, item]) => [key, codec.encode(item)])),
+  )
+}
+
+/** An invalid record becomes empty rather than failing the whole store, like `Persistence.record`. */
+export function lenientRecord<T, E>(codec: Of<T, E>): Of<Record<string, T>, Record<string, E>> {
+  const strict = record(codec)
+  return make(
+    (input) => {
+      const value = strict.decode(input)
+      return value === INVALID ? {} : value
+    },
+    strict.encode,
+  )
+}
+
+export function union<const C extends ReadonlyArray<Any>>(codecs: C): Of<C[number]["Type"], C[number]["Encoded"]> {
+  return make(
+    (input) => {
+      for (const codec of codecs) {
+        const value = codec.decode(input)
+        if (value !== INVALID) return value
+      }
+      return INVALID
+    },
+    (value) => {
+      // Encode with the first member that accepts the value's shape; members are disjoint in practice.
+      for (const codec of codecs) if (codec.decode(value) !== INVALID) return codec.encode(value)
+      return value as C[number]["Encoded"]
+    },
+  )
+}
+
+/** Maps a decoded value into another shape, the replacement for `decodeTo` + `SchemaGetter.transform`. */
+export function transform<T, E, T2>(
+  codec: Of<T, E>,
+  options: { decode: (value: T) => T2; encode: (value: T2) => T },
+): Of<T2, E> {
+  return make(
+    (input) => {
+      const value = codec.decode(input)
+      return value === INVALID ? INVALID : options.decode(value)
+    },
+    (value) => codec.encode(options.encode(value)),
+  )
+}
+
+/** Decodes with `source`, maps, then validates with `target`: Effect's `decodeTo` with a transform. */
+export function decodeTo<T, E, T2, E2>(
+  source: Of<T, E>,
+  target: Of<T2, E2>,
+  options: { decode: (value: T) => E2; encode: (value: T2) => T },
+): Of<T2, E> {
+  return make(
+    (input) => {
+      const value = source.decode(input)
+      return value === INVALID ? INVALID : target.decode(options.decode(value))
+    },
+    (value) => source.encode(options.encode(value)),
+  )
+}
+
+/** Invalid and missing values become `value()`, like `Persistence.fallback`. */
+export function fallback<T, E>(codec: Of<T, E>, value: () => NoInfer<T>): Of<T, E> {
+  return make(
+    (input) => {
+      if (input === undefined) return value()
+      const decoded = codec.decode(input)
+      return decoded === INVALID ? value() : decoded
+    },
+    codec.encode,
+  )
+}
+
+export function fromJsonString<T, E>(codec: Of<T, E>): Of<T, string> {
+  return make(
+    (input) => {
+      if (typeof input !== "string") return INVALID
+      try {
+        return codec.decode(JSON.parse(input))
+      } catch {
+        return INVALID
+      }
+    },
+    (value) => JSON.stringify(codec.encode(value)),
+  )
+}
+
+export type Decoder = Pick<Of<unknown>, "decode">
+export type Migrated<C extends Any> = { readonly current: C; readonly read: Decoder }
+
+/** Older stored shapes go through `read` first; `current` describes what the store holds today. */
+export function migrate<C extends Any>(current: C, read: Decoder): Migrated<C> {
+  return { current, read }
+}
+
+function isMigrated<C extends Any>(definition: C | Migrated<C>): definition is Migrated<C> {
+  return !isCodec(definition) && "current" in definition
+}
+
+// Stored values recover field by field against the initial value: an object's valid fields are
+// kept, invalid or missing ones take their initial counterpart, and the result is merged over the
+// initial so new fields appear with their defaults. Mirrors `Persistence.withInitial`.
+export function withInitial<C extends Any>(definition: C | Migrated<C>, initial: Type<C>): Of<Type<C>, unknown> {
+  const codec = isMigrated(definition) ? definition.current : definition
+  const read = isMigrated(definition) ? definition.read : unknown
+  return make(
+    (input) => {
+      const stored = read.decode(input)
+      if (stored === INVALID) return INVALID
+      // Re-decoding validates the merged value and copies it, so the store never aliases `initial`.
+      return codec.decode(codec.encode(merge(initial, recover(codec, stored, initial)) as Type<C>))
+    },
+    (value) => codec.encode(value),
+  )
+}
+
+function recover(codec: Any, value: unknown, initial: unknown): unknown {
+  if (value === undefined) return initial
+  if ("fields" in codec && isObject(value)) {
+    const fields = (codec as Struct<Fields>).fields
+    return Object.fromEntries(
+      Object.entries(fields).flatMap(([name, field]) => {
+        const defaults = isObject(initial) ? initial[name] : undefined
+        const next = recover(field, value[name], defaults)
+        if (next === undefined && !Object.hasOwn(value, name) && defaults === undefined) return []
+        return [[name, next]]
+      }),
+    )
+  }
+  const decoded = codec.decode(value)
+  return decoded === INVALID ? initial : decoded
+}
+
+function merge(initial: unknown, value: unknown): unknown {
+  if (value === undefined) return initial
+  if (!isObject(initial) || !isObject(value)) return value
+  return Object.fromEntries(
+    [...new Set([...Object.keys(initial), ...Object.keys(value)])].map((key) => [key, merge(initial[key], value[key])]),
+  )
+}
+
+function isObject(value: unknown): value is Record<string, unknown> {
+  return typeof value === "object" && value !== null && !Array.isArray(value)
+}
+
+
@@ -1,8 +1,7 @@
 import { describe, expect, test } from "bun:test"
-import { Schema } from "effect"
 import { WorkspaceOnboardingSchema, ProviderTipSchema, WorkspaceTipSchema } from "@/new-session/view"
 import { ModelSelectionSchema } from "@/providers/models/selection"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"
 import { FileViewsSchema } from "@/workspaces/files/view-cache"
 import { languageSchema } from "@/runtime/i18n/language"
 import { HomeServersSchema } from "@/home/projects/controller"
@@ -10,9 +9,9 @@ import { ModelProvidersSchema } from "@/settings/models/models"

 describe("persisted consumer schemas", () => {
  test("onboarding and provider tip retain defaults and validate stored values", () => {
-    const onboarding = Schema.decodeUnknownSync(Persistence.withInitial(WorkspaceOnboardingSchema, { used: false }))
-    const tip = Schema.decodeUnknownSync(Persistence.withInitial(ProviderTipSchema, { dismissedAt: 0 }))
-    const workspaceTip = Schema.decodeUnknownSync(Persistence.withInitial(WorkspaceTipSchema, { dismissedAt: 0 }))
+    const onboarding = ((input: unknown) => Codec.decodeOrThrow(Codec.withInitial(WorkspaceOnboardingSchema, { used: false }), input))
+    const tip = ((input: unknown) => Codec.decodeOrThrow(Codec.withInitial(ProviderTipSchema, { dismissedAt: 0 }), input))
+    const workspaceTip = ((input: unknown) => Codec.decodeOrThrow(Codec.withInitial(WorkspaceTipSchema, { dismissedAt: 0 }), input))
    expect(onboarding({})).toEqual({ used: false })
    expect(onboarding({ used: "true" })).toEqual({ used: false })
    expect(onboarding({ used: true })).toEqual({ used: true })
@@ -25,7 +24,7 @@ describe("persisted consumer schemas", () => {

  test("collapse records recover malformed entries without losing valid siblings", () => {
    for (const schema of [HomeServersSchema, ModelProvidersSchema]) {
-      const decode = Schema.decodeUnknownSync(Persistence.withInitial(schema, { collapsed: {} }))
+      const decode = (input: unknown) => Codec.decodeOrThrow(Codec.withInitial(schema, { collapsed: {} }), input)
      expect(decode({})).toEqual({ collapsed: {} })
      expect(decode({ collapsed: [] })).toEqual({ collapsed: {} })
      expect(decode({ collapsed: { open: false, closed: true, invalid: "false" } })).toEqual({
@@ -35,21 +34,19 @@ describe("persisted consumer schemas", () => {
  })

  test("model selection migrates legacy picks and omits workspace state", () => {
-    const decode = Schema.decodeUnknownSync(Persistence.withInitial(ModelSelectionSchema, { session: {} }))
+    const decode = (input: unknown) => Codec.decodeOrThrow(Codec.withInitial(ModelSelectionSchema, { session: {} }), input)
    expect(decode({})).toEqual({ session: {} })
    const state = decode({ pick: { __workspace__: { agent: "plan" }, session1: { agent: "build" } } })
    expect(state.session.session1?.agent).toBe("build")
    expect(state.session.__workspace__).toBeUndefined()
-    const encoded = Schema.encodeSync(
-      Schema.fromJsonString(Persistence.withInitial(ModelSelectionSchema, { session: {} })),
-    )(state)
+    const encoded = Codec.fromJsonString(Codec.withInitial(ModelSelectionSchema, { session: {} })).encode(state)
    expect(JSON.parse(encoded)).toEqual({ session: { session1: { agent: "build" } } })
    expect(decode(JSON.parse(encoded))).toEqual(state)
  })

  test("current model selections take precedence over legacy picks", () => {
    expect(
-      Schema.decodeUnknownSync(Persistence.withInitial(ModelSelectionSchema, { session: {} }))({
+      Codec.decodeOrThrow(Codec.withInitial(ModelSelectionSchema, { session: {} }), {
        session: {},
        pick: { session1: { agent: "plan" } },
      }),
@@ -57,7 +54,7 @@ describe("persisted consumer schemas", () => {
  })

  test("model selection validates nested model keys and preserves explicit null variants", () => {
-    const state = Schema.decodeUnknownSync(Persistence.withInitial(ModelSelectionSchema, { session: {} }))({
+    const state = Codec.decodeOrThrow(Codec.withInitial(ModelSelectionSchema, { session: {} }), {
      session: {
        good: { agent: "build", model: { providerID: "provider", modelID: "model", variant: "high" }, variant: null },
        partial: { agent: "plan", model: { providerID: "provider", modelID: 42 }, variant: false },
@@ -76,7 +73,7 @@ describe("persisted consumer schemas", () => {
  })

  test("file views validate scroll positions and line sides independently", () => {
-    const decode = Schema.decodeUnknownSync(Persistence.withInitial(FileViewsSchema, { file: {} }))
+    const decode = ((input: unknown) => Codec.decodeOrThrow(Codec.withInitial(FileViewsSchema, { file: {} }), input))
    expect(decode({})).toEqual({ file: {} })
    const state = decode({
      file: {
@@ -103,7 +100,7 @@ describe("persisted consumer schemas", () => {
  })

  test("language preserves runtime defaults and normalizes unsupported locales to English", () => {
-    const decode = Schema.decodeUnknownSync(Persistence.withInitial(languageSchema, { locale: "fr" }))
+    const decode = (input: unknown) => Codec.decodeOrThrow(Codec.withInitial(languageSchema, { locale: "fr" }), input)
    expect(decode({})).toEqual({ locale: "fr" })
    expect(decode({ locale: undefined })).toEqual({ locale: "fr" })
    expect(decode({ locale: 42 })).toEqual({ locale: "fr" })
@@ -111,3 +108,7 @@ describe("persisted consumer schemas", () => {
    expect(decode({ locale: "ar" })).toEqual({ locale: "ar" })
  })
 })
+
+
+
+
@@ -1,5 +1,5 @@
 import type { AsyncStorage } from "@solid-primitives/storage"
-import { Option, Schema } from "effect"
+import { Codec } from "./codec"

 export type BlobReference = { id: string; url: string }

@@ -312,12 +312,12 @@ export function createDraftStore(driver: Driver, options: { grace?: number } = {
    getItem: async (key) => {
      const value = await driver.get(key)
      if (value === null) return null
-      const parsed = Schema.decodeUnknownOption(Schema.fromJsonString(Schema.Unknown))(value)
-      // Let the owning persistence codec apply its invalid-document policy.
-      if (Option.isNone(parsed)) return value
-      // A loaded document is live in the composer: pin its images before decode mints their URLs.
-      retain(key, imageIDs(parsed.value), grace)
-      return JSON.stringify(await decode(parsed.value))
+      const parsed = Codec.fromJsonString(Codec.unknown).decode(value)
+      // Let the owning persistence codec apply its invalid-document policy.
+      if (parsed === Codec.INVALID) return value
+      // A loaded document is live in the composer: pin its images before decode mints their URLs.
+      retain(key, imageIDs(parsed), grace)
+      return JSON.stringify(await decode(parsed))
    },
    setItem: (key, value) => setDocument(key, JSON.parse(value)),
    setDocument,
@@ -455,3 +455,4 @@ export async function blobDataUrl(blob: BlobReference, mime: string) {
 export function createLegacyBlobReference(dataUrl: string): BlobReference {
  return { id: dataUrl, url: dataUrl }
 }
+
@@ -1,162 +0,0 @@
-import { describe, expect, test } from "bun:test"
-import { Effect, Schema, SchemaGetter } from "effect"
-import { Persistence } from "./schema"
-
-describe("persistence schemas", () => {
-  test("initial state supplies nested defaults without hiding valid siblings", () => {
-    const schema = Persistence.withInitial(
-      Persistence.struct({
-        enabled: Schema.Boolean,
-        appearance: Persistence.struct({ width: Schema.Number, font: Schema.String }),
-        variant: Schema.optional(Schema.NullOr(Schema.String)),
-      }),
-      { enabled: true, appearance: { width: 240, font: "default" }, variant: "high" },
-    )
-    const decode = Schema.decodeUnknownSync(schema)
-    expect(decode({ appearance: { width: 300 } })).toEqual({
-      enabled: true,
-      appearance: { width: 300, font: "default" },
-      variant: "high",
-    })
-    expect(decode({ enabled: "false", appearance: { width: "wide", font: "saved" }, variant: null })).toEqual({
-      enabled: true,
-      appearance: { width: 240, font: "saved" },
-      variant: null,
-    })
-    expect(decode({ appearance: null })).toEqual({
-      enabled: true,
-      appearance: { width: 240, font: "default" },
-      variant: "high",
-    })
-  })
-
-  test("legacy migration observes missing fields before initial defaults are applied", () => {
-    const current = Persistence.struct({ mode: Schema.Literals(["compact", "full"]), enabled: Schema.Boolean })
-    const stored = Schema.Struct({
-      mode: Schema.optional(Schema.Unknown),
-      expanded: Schema.optional(Schema.Boolean),
-    }).pipe(
-      Schema.decode({
-        decode: SchemaGetter.transform((value) =>
-          value.mode !== undefined || value.expanded === undefined
-            ? value
-            : { ...value, mode: value.expanded ? "full" : "compact" },
-        ),
-        encode: SchemaGetter.passthrough(),
-      }),
-    )
-    const schema = Persistence.withInitial(Persistence.migrate(current, stored), { mode: "compact", enabled: true })
-    const decode = Schema.decodeUnknownSync(schema)
-    expect(decode({ expanded: true, enabled: false })).toEqual({ mode: "full", enabled: false })
-    expect(decode({ expanded: true, mode: "compact" })).toEqual({ mode: "compact", enabled: true })
-    expect(decode({ expanded: true, mode: "invalid" })).toEqual({ mode: "compact", enabled: true })
-    expect(Schema.encodeSync(schema)(decode({ expanded: true }))).toEqual({ mode: "full", enabled: true })
-  })
-
-  test("initial merging preserves field codecs and replaces arrays rather than merging indexes", () => {
-    const current = Persistence.struct({
-      amount: Schema.NumberFromString.check(Schema.isFinite()),
-      items: Schema.mutable(Schema.Array(Schema.String)),
-    })
-    const schema = Persistence.withInitial(current, { amount: 7, items: ["initial"] })
-    const decode = Schema.decodeUnknownSync(schema)
-    expect(decode({ amount: "12", items: [] })).toEqual({ amount: 12, items: [] })
-    expect(decode({ amount: "invalid", items: ["saved"] })).toEqual({ amount: 7, items: ["saved"] })
-    expect(Schema.encodeSync(schema)(decode({}))).toEqual({ amount: "7", items: ["initial"] })
-  })
-
-  test("built-in defaults only recover absent values, not invalid ones", () => {
-    const schema = Persistence.struct({
-      enabled: Schema.Boolean.pipe(Schema.withDecodingDefault(Effect.succeed(true))),
-    })
-    const decode = Schema.decodeUnknownSync(schema)
-    expect(decode({})).toEqual({ enabled: true })
-    expect(decode({ enabled: undefined })).toEqual({ enabled: true })
-    expect(() => decode({ enabled: "true" })).toThrow()
-    const state: typeof schema.Type = { enabled: false }
-    state.enabled = true
-    expect(Schema.encodeSync(schema)(state)).toEqual({ enabled: true })
-  })
-
-  test("defaults missing and invalid fields without discarding valid siblings", () => {
-    const schema = Schema.Struct({
-      enabled: Persistence.fallback(Schema.Boolean, () => true),
-      label: Persistence.fallback(Schema.String, () => "default"),
-    })
-    const decode = Schema.decodeUnknownSync(schema)
-    expect(decode({})).toEqual({ enabled: true, label: "default" })
-    expect(decode({ enabled: "false", label: "saved" })).toEqual({ enabled: true, label: "saved" })
-    expect(decode({ enabled: undefined, label: null })).toEqual({ enabled: true, label: "default" })
-    expect(Schema.encodeSync(schema)(decode({}))).toEqual({ enabled: true, label: "default" })
-  })
-
-  test("optional recovery keeps fields optional without adding an undefined default", () => {
-    const number = Schema.NumberFromString.check(Schema.isFinite())
-    const schema = Persistence.struct({ value: Persistence.optional(number) })
-    const decode = Schema.decodeUnknownSync(schema)
-    const empty: typeof schema.Type = {}
-    expect(decode({})).toEqual(empty)
-    expect(decode({ value: "invalid" })).toEqual(empty)
-    expect(Object.hasOwn(decode({ value: "invalid" }), "value")).toBe(false)
-    expect(decode({ value: undefined })).toEqual({ value: undefined })
-    expect(decode({ value: "42" })).toEqual({ value: 42 })
-    expect(Schema.encodeSync(schema)({ value: 42 })).toEqual({ value: "42" })
-    expect(Schema.encodeSync(schema)(empty)).toEqual({})
-    expect(() =>
-      Schema.decodeUnknownSync(Schema.Struct({ value: Schema.optional(number) }))({ value: "invalid" }),
-    ).toThrow()
-  })
-
-  test("fallbacks use decoded values and retain the codec on writes", () => {
-    const schema = Persistence.struct({
-      value: Persistence.fallback(Schema.NumberFromString.check(Schema.isFinite()), () => 7),
-    })
-    const decode = Schema.decodeUnknownSync(schema)
-    expect(decode({})).toEqual({ value: 7 })
-    expect(decode({ value: "invalid" })).toEqual({ value: 7 })
-    expect(Schema.encodeSync(schema)(decode({}))).toEqual({ value: "7" })
-  })
-
-  test("records default to fresh mutable objects and keep entry recovery explicit", () => {
-    const strict = Persistence.record(Schema.Boolean)
-    const decode = Schema.decodeUnknownSync(strict)
-    expect(decode(undefined)).toEqual({})
-    expect(decode([])).toEqual({})
-    expect(decode({ valid: true, invalid: "true" })).toEqual({})
-    const first: typeof strict.Type = decode(undefined)
-    first.changed = true
-    expect(decode(undefined)).toEqual({})
-
-    const recover = Persistence.record(Persistence.optional(Schema.Boolean))
-    const state = Schema.decodeUnknownSync(recover)({ valid: true, invalid: "true" })
-    expect(state).toEqual({ valid: true })
-    expect(Schema.encodeSync(recover)(state)).toEqual({ valid: true })
-  })
-
-  test("creates fresh default collections", () => {
-    const schema = Schema.Struct({ items: Persistence.array(Schema.String) })
-    const decode = Schema.decodeUnknownSync(schema)
-    const first = decode({})
-    first.items.push("changed")
-    expect(decode({}).items).toEqual([])
-  })
-
-  test("recovers and migrates individual array entries", () => {
-    const current = Schema.Struct({ name: Schema.String })
-    const schema = Persistence.array(
-      Schema.Union([current, Schema.String]).pipe(
-        Schema.decodeTo(current, {
-          decode: SchemaGetter.transform((value) => (typeof value === "string" ? { name: value } : value)),
-          encode: SchemaGetter.passthrough(),
-        }),
-      ),
-    )
-    const decode = Schema.decodeUnknownSync(schema)
-    const value = decode(["old", { name: "new" }, null, { name: false }])
-    expect(value).toEqual([{ name: "old" }, { name: "new" }])
-    expect(Schema.encodeSync(schema)(value)).toEqual(value)
-    expect(decode(Schema.encodeSync(schema)(value))).toEqual(value)
-    expect(decode(undefined)).toEqual([])
-    expect(decode({})).toEqual([])
-  })
-})
@@ -1,99 +0,0 @@
-export * as Persistence from "./schema"
-
-import { Effect, Option, Predicate, Result, Schema, SchemaAST, SchemaGetter, SchemaParser, Struct } from "effect"
-
-export type Migrated<S extends Schema.ConstraintCodec<object, unknown>> = {
-  current: S
-  read: Schema.ConstraintDecoder<unknown>
-}
-
-export function migrate<S extends Schema.ConstraintCodec<object, unknown>>(
-  current: S,
-  read: Schema.ConstraintDecoder<unknown>,
-): Migrated<S> {
-  return { current, read }
-}
-
-function isMigrated<S extends Schema.ConstraintCodec<object, unknown>>(schema: S | Migrated<S>): schema is Migrated<S> {
-  return "current" in schema
-}
-
-export function withInitial<S extends Schema.ConstraintCodec<object, unknown>>(
-  definition: S | Migrated<S>,
-  initial: NoInfer<S["Type"]>,
-) {
-  const schema = isMigrated(definition) ? definition.current : definition
-  const read = isMigrated(definition)
-    ? SchemaParser.decodeUnknownResult(definition.read, { onExcessProperty: "preserve" })
-    : Result.succeed<unknown>
-  const encode = Schema.encodeUnknownSync(schema)
-  return Schema.Unknown.pipe(
-    Schema.decode<Schema.Unknown>({
-      decode: SchemaGetter.transformOrFail((value) =>
-        Effect.fromResult(Result.map(read(value), (stored) => merge(initial, recover(schema.ast, stored, initial)))),
-      ),
-      encode: SchemaGetter.transform((value) => encode(value)),
-    }),
-    Schema.decodeTo(Schema.toType(schema)),
-  )
-}
-
-// Object-level codecs own their recovery. Plain structs can recover fields independently.
-function recover(ast: SchemaAST.AST, value: unknown, initial: unknown): unknown {
-  if (value === undefined) return initial
-  if (ast._tag === "Objects" && !ast.encoding && ast.indexSignatures.length === 0 && Predicate.isObject(value)) {
-    return Object.fromEntries(
-      ast.propertySignatures.flatMap((field) => {
-        const defaults = Predicate.isObject(initial) ? initial[field.name] : undefined
-        const next = recover(field.type, value[field.name], defaults)
-        if (next === undefined && !Object.hasOwn(value, field.name) && defaults === undefined) return []
-        return [[field.name, next]]
-      }),
-    )
-  }
-  const decoded = Schema.decodeUnknownOption(Schema.make<Schema.Codec<unknown, unknown>>(ast))(value)
-  return Option.isSome(decoded) ? decoded.value : initial
-}
-
-function merge(initial: unknown, value: unknown): unknown {
-  if (value === undefined) return initial
-  if (!Predicate.isObject(initial) || !Predicate.isObject(value)) return value
-  return Object.fromEntries(
-    [...new Set([...Object.keys(initial), ...Object.keys(value)])].map((key) => [key, merge(initial[key], value[key])]),
-  )
-}
-
-// Unlike a decoding default, a fallback also replaces invalid persisted values.
-export function fallback<S extends Schema.ConstraintCodec<unknown, unknown>>(schema: S, value: () => S["Type"]) {
-  const defaulted = Schema.withDecodingDefaultType<S>(Effect.sync(value))(schema)
-  return Schema.catchDecoding<typeof defaulted>(() => Effect.sync(() => Option.some(value())))(defaulted)
-}
-
-export function optional<S extends Schema.ConstraintCodec<unknown, unknown>>(schema: S) {
-  const field = Schema.optional(schema)
-  return Schema.catchDecoding<typeof field>(() => Effect.succeed(Option.none()))(field)
-}
-
-export function struct<const Fields extends Schema.Struct.Fields>(fields: Fields) {
-  return Schema.Struct(fields).mapFields(Struct.map(Schema.mutableKey))
-}
-
-export function record<S extends Schema.ConstraintCodec<unknown, unknown>>(schema: S) {
-  const entries = Schema.Record(Schema.String, Schema.mutableKey(schema))
-  return fallback(entries, () => Schema.decodeUnknownSync(entries)({}))
-}
-
-// Recover individual entries rather than discarding a whole history or collection.
-export function array<S extends Schema.ConstraintCodec<unknown, unknown>>(schema: S) {
-  const decode = Schema.decodeUnknownOption(schema)
-  const encode = Schema.encodeSync(schema)
-  return fallback(
-    Schema.Array(Schema.Unknown).pipe(
-      Schema.decodeTo(Schema.mutable(Schema.Array(Schema.toType(schema))), {
-        decode: SchemaGetter.transform((items) => items.flatMap((item) => Option.toArray(decode(item)))),
-        encode: SchemaGetter.transform((items) => items.map((item) => encode(item))),
-      }),
-    ),
-    () => [],
-  )
-}
@@ -3,11 +3,10 @@ import { messageSync, type AsyncStorage, type SyncStorage } from "@solid-primiti
 import { checksum } from "@opencode/util/encode"
 import { createResource, onCleanup, type Accessor } from "solid-js"
 import { createStore, type SetStoreFunction, type Store } from "solid-js/store"
-import { Option, Schema } from "effect"
 import { pathKey } from "@/workspaces/path-key"
 import { ScopedKey, ServerScope } from "@/runtime/server/scope"
+import { Codec } from "./codec"
 import { persistStore } from "./persist"
-import { Persistence } from "./schema"

 type InitType = Promise<string | null> | string | null
 type PersistedWithReady<T> = [
@@ -472,25 +471,31 @@ export function removePersisted(
  }
 }

-export function persisted<S extends Schema.ConstraintCodec<object, unknown>>(
-  target: string | PersistTarget,
-  schema: S | Persistence.Migrated<S>,
-  initial: NoInfer<S["Type"]>,
-  platformOverride?: Platform,
-): PersistedWithReady<S["Type"]> {
+export function persisted<C extends Codec.Any>(
+  target: string | PersistTarget,
+  definition: C | Codec.Migrated<C>,
+  initial: NoInfer<Codec.Type<C>>,
+  platformOverride?: Platform,
+): PersistedWithReady<Codec.Type<C>> {
+  type T = Codec.Type<C>
+  const initialized = Codec.withInitial(definition, initial)
+  const json = Codec.fromJsonString(initialized)
+  const codec = {
+    decode: (raw: string) => Codec.decodeOption(json, raw),
+    deserialize: (raw: unknown) => Codec.decodeOrThrow(json, raw),
+    serialize: (value: T) => Codec.encodeOrThrow(json, value),
+    encode: (value: T) => Codec.encodeOrThrow(initialized, value),
+    initial: Codec.decodeOrThrow(initialized, initialized.encode(initial)),
+  }
  const platform = platformOverride ?? usePlatform()
  const config = resolveTarget(typeof target === "string" ? { key: target } : target, platform)

-  const initialized = Persistence.withInitial(schema, initial)
-  const json = Schema.fromJsonString(initialized)
-  const decode = Schema.decodeUnknownOption(json)
-  const encode = Schema.encodeSync(initialized)
-  const serialize = Schema.encodeSync(json)
+  const { encode, serialize } = codec
  const normalize = (raw: string) => {
-    const value = decode(raw)
-    if (Option.isSome(value)) return serialize(value.value)
+    const value = codec.decode(raw)
+    if (value !== undefined) return serialize(value)
  }
-  const store = createStore<S["Type"]>(Schema.decodeUnknownSync(Schema.toType(initialized))(initial))
+  const store = createStore<T>(codec.initial)
  const isDesktop = platform.platform === "desktop" && !!platform.storage
  const draft = config.draft ? platform.draftStore : undefined
  const prefix = `${config.storage ?? "default"}:`
@@ -602,7 +607,7 @@ export function persisted<S extends Schema.ConstraintCodec<object, unknown>>(
    name: config.key,
    storage,
    serialize,
-    deserialize: Schema.decodeUnknownSync(json),
+    deserialize: codec.deserialize,
    sync: channel ? messageSync(channel) : undefined,
    // Drafts take the encoded document itself so large text is externalized without the store
    // re-parsing the serialized form on every save.
@@ -639,3 +644,4 @@ export function persisted<S extends Schema.ConstraintCodec<object, unknown>>(
    }),
  ]
 }
+
@@ -19,7 +19,6 @@ export type BrowserPaneCommand = Browser.Action
 export type BrowserPaneState = Browser.State | null
 export type BrowserPaneEvent =
  | { type: "focus"; tabID: Browser.TabID }
-  | { type: "preview"; path: string }
  | { type: "state"; state: BrowserPaneState; error?: string }

 export type BrowserPaneRegistration = {
@@ -0,0 +1,11 @@
+import type { Brand } from "effect"
+import { Codec } from "@/runtime/persistence/codec"
+
+// The server key's brand is shared with the Effect schema in ./persistence.ts (type only, so this
+// module loads nothing of Effect), letting stores port to plain codecs one at a time.
+export type ServerKey = string & Brand.Brand<"ServerConnection.Key">
+
+export const ServerKey: Codec.Of<ServerKey, string> & { make(value: string): ServerKey } = Object.assign(
+  Codec.make<ServerKey, string>((v) => (typeof v === "string" ? (v as ServerKey) : Codec.INVALID), (v) => v),
+  { make: (value: string) => value as ServerKey },
+)
@@ -1,15 +1,14 @@
 import { describe, expect, test } from "bun:test"
-import { Schema } from "effect"
 import { IconState, ModelState, ProjectState, VcsState, serverState } from "./persistence"
 import { createRoot } from "solid-js"
 import { isServer } from "solid-js/web"
 import { Persist, persisted } from "@/runtime/persistence/storage"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"

 const initial = { list: [], hidden: {}, projects: {}, lastProject: {}, recentlyClosed: {} }

 function serverSchema(canonical?: () => string | undefined) {
-  return Persistence.withInitial(serverState(canonical), initial)
+  return Codec.withInitial(serverState(canonical), initial)
 }

 describe("server persistence schema", () => {
@@ -29,7 +28,7 @@ describe("server persistence schema", () => {
      ],
      projects: { local: [{ worktree: "/project", expanded: true }] },
    }
-    const state = Schema.decodeUnknownSync(schema)(input)
+    const state = Codec.decodeOrThrow(schema, input)
    expect(state).toEqual({
      list: [
        { type: "http", http: { url: "http://localhost:4096" } },
@@ -48,13 +47,13 @@ describe("server persistence schema", () => {
      recentlyClosed: {},
    })
    expect(input.list[1]).toHaveProperty("username", "legacy")
-    const encoded = Schema.encodeSync(schema)(state)
+    const encoded = schema.encode(state)
    expect(encoded).toEqual(state)
-    expect(Schema.decodeUnknownSync(schema)(encoded)).toEqual(state)
+    expect(Codec.decodeOrThrow(schema, encoded)).toEqual(state)
  })

  test("defaults missing or malformed fields and drops invalid entries independently", () => {
-    const decode = Schema.decodeUnknownSync(serverSchema())
+    const decode = ((input: unknown) => Codec.decodeOrThrow(serverSchema(), input))
    const empty = { list: [], hidden: {}, projects: {}, lastProject: {}, recentlyClosed: {} }
    expect(decode({})).toEqual(empty)
    expect(decode({ list: null, hidden: [], projects: false, lastProject: 1, recentlyClosed: "bad" })).toEqual(empty)
@@ -74,7 +73,7 @@ describe("server persistence schema", () => {

  test("moves canonical project buckets without changing server keys or unrelated scopes", () => {
    const schema = serverSchema(() => "https://opencode.example.com")
-    const state = Schema.decodeUnknownSync(schema)({
+    const state = Codec.decodeOrThrow(schema, {
      list: ["https://opencode.example.com"],
      hidden: { "https://opencode.example.com": true },
      projects: {
@@ -100,14 +99,14 @@ describe("server persistence schema", () => {
    expect(state.list[0]?.http.url).toBe("https://opencode.example.com")
    expect(state.hidden).toEqual({ "https://opencode.example.com": true })
    expect(state.recentlyClosed).toEqual({ local: ["/closed"], "https://opencode.example.com": ["/old-closed"] })
-    expect(Schema.encodeSync(schema)(state)).toEqual(state)
-    expect(Schema.decodeUnknownSync(schema)(state)).toEqual(state)
+    expect(schema.encode(state)).toEqual(state)
+    expect(Codec.decodeOrThrow(schema, state)).toEqual(state)
  })

  test("reads the latest canonical local prop on each decode", () => {
    const props: { canonicalLocalServer?: string } = {}
    const schema = serverSchema(() => props.canonicalLocalServer)
-    const decode = Schema.decodeUnknownSync(schema)
+    const decode = ((input: unknown) => Codec.decodeOrThrow(schema, input))
    const input = {
      projects: { remote: [{ worktree: "/project", expanded: true }] },
      lastProject: { remote: "/project" },
@@ -122,7 +121,7 @@ describe("server persistence schema", () => {
  })

  test("migrates a last project without a project list", () => {
-    expect(Schema.decodeUnknownSync(serverSchema(() => "remote"))({ lastProject: { remote: "/project" } })).toEqual({
+    expect(Codec.decodeOrThrow(serverSchema(() => "remote"), { lastProject: { remote: "/project" } })).toEqual({
      list: [],
      hidden: {},
      projects: {},
@@ -134,7 +133,7 @@ describe("server persistence schema", () => {

 describe("model persistence schema", () => {
  test("defaults missing state and keeps valid entries beside malformed entries", () => {
-    const decode = Schema.decodeUnknownSync(Persistence.withInitial(ModelState, { user: [], recent: [], variant: {} }))
+    const decode = ((input: unknown) => Codec.decodeOrThrow(Codec.withInitial(ModelState, { user: [], recent: [], variant: {} }), input))
    expect(decode({})).toEqual({ user: [], recent: [], variant: {} })
    expect(decode({ user: null, recent: 1, variant: [] })).toEqual({ user: [], recent: [], variant: {} })
    const state = decode({
@@ -155,24 +154,24 @@ describe("model persistence schema", () => {
      recent: [{ providerID: "provider", modelID: "model" }],
      variant: { model: "high" },
    })
-    expect(Schema.encodeSync(ModelState)(state)).toEqual(state)
+    expect(ModelState.encode(state)).toEqual(state)
  })
 })

 describe("directory cache schemas", () => {
  test("defaults missing and malformed VCS caches but retains optional branch metadata", () => {
-    const decode = Schema.decodeUnknownSync(Persistence.withInitial(VcsState, { value: undefined }))
+    const decode = ((input: unknown) => Codec.decodeOrThrow(Codec.withInitial(VcsState, { value: undefined }), input))
    expect(decode({})).toEqual({ value: undefined })
    expect(decode({ value: null })).toEqual({ value: undefined })
    expect(decode({ value: { branch: 1 } })).toEqual({ value: undefined })
    expect(decode({ value: { default_branch: "main" } })).toEqual({ value: { default_branch: "main" } })
    const state = decode({ value: { branch: "feature", default_branch: "main", obsolete: true } })
    expect(state).toEqual({ value: { branch: "feature", default_branch: "main" } })
-    expect(Schema.encodeSync(VcsState)(state)).toEqual(state)
+    expect(VcsState.encode(state)).toEqual(state)
  })

  test("validates project name, icon overrides and startup commands", () => {
-    const decode = Schema.decodeUnknownSync(Persistence.withInitial(ProjectState, { value: undefined }))
+    const decode = ((input: unknown) => Codec.decodeOrThrow(Codec.withInitial(ProjectState, { value: undefined }), input))
    expect(decode({})).toEqual({ value: undefined })
    expect(decode({ value: [] })).toEqual({ value: undefined })
    expect(decode({ value: { icon: { override: 1 } } })).toEqual({ value: undefined })
@@ -185,7 +184,7 @@ describe("directory cache schemas", () => {
        commands: { start: "bun dev" },
      },
    })
-    expect(Schema.encodeSync(ProjectState)(state)).toEqual(state)
+    expect(ProjectState.encode(state)).toEqual(state)
    expect(state.value).toEqual({
      name: "Project",
      icon: { override: "data:image/png;base64,abc", color: "blue" },
@@ -194,12 +193,12 @@ describe("directory cache schemas", () => {
  })

  test("validates optional icon strings", () => {
-    const decode = Schema.decodeUnknownSync(Persistence.withInitial(IconState, { value: undefined }))
+    const decode = ((input: unknown) => Codec.decodeOrThrow(Codec.withInitial(IconState, { value: undefined }), input))
    expect(decode({})).toEqual({ value: undefined })
    expect(decode({ value: 42 })).toEqual({ value: undefined })
    expect(decode({ value: null })).toEqual({ value: undefined })
    expect(decode({ value: "" })).toEqual({ value: "" })
-    expect(Schema.encodeSync(IconState)(decode({ value: "data:image/png;base64,abc" }))).toEqual({
+    expect(IconState.encode(decode({ value: "data:image/png;base64,abc" }))).toEqual({
      value: "data:image/png;base64,abc",
    })
  })
@@ -255,7 +254,7 @@ test.skipIf(isServer)(
      const stored = values.get("opencode.global.dat:server")
      expect(stored).toBeDefined()
      if (!stored) throw new Error("server state was not written")
-      const decoded = Schema.decodeUnknownSync(Schema.fromJsonString(serverSchema()))(stored)
+      const decoded = Codec.decodeOrThrow(Codec.fromJsonString(serverSchema()), stored)
      expect(decoded.projects.local).toEqual([{ worktree: "/project", expanded: true }])
      expect(stored).not.toContain("username")
      expect(decoded.list).toEqual(root.state[0].list)
@@ -264,3 +263,4 @@ test.skipIf(isServer)(
    }
  },
 )
+
@@ -1,136 +1,127 @@
-import { Effect, Option, Schema, SchemaGetter } from "effect"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"
+import { ServerKey } from "./key"

-export const ServerKey = Schema.String.pipe(Schema.brand("ServerConnection.Key"))
+export { ServerKey }

-export const ServerHttpBase = Persistence.struct({
-  url: Schema.String,
-  password: Schema.optional(Schema.String),
+export const ServerHttpBase = Codec.struct({
+  url: Codec.string,
+  password: Codec.optional(Codec.string),
 })

-export const ServerHttp = Persistence.struct({
-  type: Schema.Literal("http"),
+export const ServerHttp = Codec.struct({
+  type: Codec.literal("http"),
  http: ServerHttpBase,
-  authToken: Schema.optional(Schema.Boolean),
-  displayName: Schema.optional(Schema.String),
-  label: Schema.optional(Schema.String),
+  authToken: Codec.optional(Codec.boolean),
+  displayName: Codec.optional(Codec.string),
+  label: Codec.optional(Codec.string),
 })

-const StoredServer = Schema.Union([ServerHttp, ServerHttpBase, Schema.String]).pipe(
-  Schema.decodeTo(ServerHttp, {
-    decode: SchemaGetter.transform((value) => {
-      if (typeof value === "string") return { type: "http", http: { url: value } }
-      if ("http" in value) return value
-      return { type: "http", http: value }
-    }),
-    encode: SchemaGetter.transform((value) => value),
-  }),
-)
-
-const ProjectList = Persistence.array(
-  Persistence.struct({
-    worktree: Schema.String,
-    expanded: Persistence.fallback(Schema.Boolean, () => true),
-  }),
-)
-const Projects = Persistence.record(ProjectList)
-const LastProject = Persistence.record(Schema.String.pipe(Schema.catchDecoding(() => Effect.succeed(Option.none()))))
-
-const State = Persistence.struct({
-  list: Persistence.array(StoredServer),
-  hidden: Schema.Record(
-    Schema.String,
-    Schema.mutableKey(Schema.Boolean.pipe(Schema.catchDecoding(() => Effect.succeed(Option.none())))),
-  ),
-  projects: Schema.Record(Schema.String, Schema.mutableKey(ProjectList)),
-  lastProject: Schema.Record(
-    Schema.String,
-    Schema.mutableKey(Schema.String.pipe(Schema.catchDecoding(() => Effect.succeed(Option.none())))),
-  ),
-  recentlyClosed: Schema.Record(Schema.String, Schema.mutableKey(Persistence.array(Schema.String))),
+// Servers were stored as a URL string, then as the HTTP block alone, before the current shape.
+const StoredServer = Codec.decodeTo(Codec.union([ServerHttp, ServerHttpBase, Codec.string]), ServerHttp, {
+  decode: (value) => {
+    if (typeof value === "string") return { type: "http" as const, http: { url: value } }
+    if ("http" in value) return value
+    return { type: "http" as const, http: value }
+  },
+  encode: (value) => value,
 })

+const ProjectList = Codec.lenientArray(
+  Codec.struct({
+    worktree: Codec.string,
+    expanded: Codec.fallback(Codec.boolean, () => true),
+  }),
+)
+const Projects = Codec.lenientRecord(ProjectList)
+const LastProject = Codec.fallback(Codec.sparseRecord(Codec.string), () => ({}))
+
+const State = Codec.struct({
+  list: Codec.lenientArray(StoredServer),
+  hidden: Codec.sparseRecord(Codec.boolean),
+  projects: Codec.record(ProjectList),
+  lastProject: Codec.sparseRecord(Codec.string),
+  recentlyClosed: Codec.record(Codec.lenientArray(Codec.string)),
+})
+
+const StoredState = Codec.struct({ projects: Projects, lastProject: LastProject }, { preserve: true })
+
+// Projects and last-opened entries recorded under the canonical local server's URL move under
+// "local" when that URL is known, so they survive the server changing address.
 export function serverState(canonicalLocalServer: () => string | undefined = () => undefined) {
-  return Persistence.migrate(
+  return Codec.migrate(
    State,
-    Schema.Struct({ projects: Projects, lastProject: LastProject }).pipe(
-      Schema.decode({
-        decode: SchemaGetter.transform((value) => {
-          const canonical = canonicalLocalServer()
-          if (!canonical || canonical === "local") return value
-          const previous = value.projects[canonical]
-          const last = value.lastProject[canonical]
-          if (!previous && last === undefined) return value
+    Codec.transform(StoredState, {
+      decode: (value) => {
+        const canonical = canonicalLocalServer()
+        if (!canonical || canonical === "local") return value
+        const previous = value.projects[canonical]
+        const last = value.lastProject[canonical]
+        if (!previous && last === undefined) return value

-          const projects = { ...value.projects }
-          if (previous) {
-            const local = projects.local ?? []
-            const worktrees = new Set(local.map((project) => project.worktree))
-            projects.local = [
-              ...local,
-              ...previous.filter((project) => {
-                if (worktrees.has(project.worktree)) return false
-                worktrees.add(project.worktree)
-                return true
-              }),
-            ]
-            delete projects[canonical]
-          }
-          const lastProject = { ...value.lastProject }
-          if (last !== undefined) {
-            lastProject.local ??= last
-            delete lastProject[canonical]
-          }
-          return { ...value, projects, lastProject }
-        }),
-        encode: SchemaGetter.transform((value) => value),
-      }),
-    ),
+        const projects = { ...value.projects }
+        if (previous) {
+          const local = projects.local ?? []
+          const worktrees = new Set(local.map((project) => project.worktree))
+          projects.local = [
+            ...local,
+            ...previous.filter((project) => {
+              if (worktrees.has(project.worktree)) return false
+              worktrees.add(project.worktree)
+              return true
+            }),
+          ]
+          delete projects[canonical]
+        }
+        const lastProject = { ...value.lastProject }
+        if (last !== undefined) {
+          lastProject.local ??= last
+          delete lastProject[canonical]
+        }
+        return { ...value, projects, lastProject }
+      },
+      encode: (value) => value,
+    }),
  )
 }

-export const ModelState = Persistence.struct({
-  user: Persistence.array(
-    Persistence.struct({
-      providerID: Schema.String,
-      modelID: Schema.String,
-      visibility: Schema.Literals(["show", "hide"]),
-      favorite: Schema.optional(Schema.Boolean),
+export const ModelState = Codec.struct({
+  user: Codec.lenientArray(
+    Codec.struct({
+      providerID: Codec.string,
+      modelID: Codec.string,
+      visibility: Codec.literals(["show", "hide"]),
+      favorite: Codec.optional(Codec.boolean),
    }),
  ),
-  recent: Persistence.array(Persistence.struct({ providerID: Schema.String, modelID: Schema.String })),
-  variant: Schema.Record(
-    Schema.String,
-    Schema.mutableKey(
-      Schema.UndefinedOr(Schema.String).pipe(Schema.catchDecoding(() => Effect.succeed(Option.none()))),
-    ),
-  ),
+  recent: Codec.lenientArray(Codec.struct({ providerID: Codec.string, modelID: Codec.string })),
+  variant: Codec.sparseRecord(Codec.undefinedOr(Codec.string)),
 })

-export const VcsState = Persistence.struct({
-  value: Schema.optional(
-    Persistence.struct({
-      branch: Schema.optional(Schema.String),
-      default_branch: Schema.optional(Schema.String),
+export const VcsState = Codec.struct({
+  value: Codec.optional(
+    Codec.struct({
+      branch: Codec.optional(Codec.string),
+      default_branch: Codec.optional(Codec.string),
    }),
  ),
 })

-const ProjectMeta = Persistence.struct({
-  name: Schema.optional(Schema.String),
-  icon: Schema.optional(
-    Persistence.struct({
-      override: Schema.optional(Schema.String),
-      color: Schema.optional(Schema.String),
+const ProjectMeta = Codec.struct({
+  name: Codec.optional(Codec.string),
+  icon: Codec.optional(
+    Codec.struct({
+      override: Codec.optional(Codec.string),
+      color: Codec.optional(Codec.string),
    }),
  ),
-  commands: Schema.optional(Persistence.struct({ start: Schema.optional(Schema.String) })),
+  commands: Codec.optional(Codec.struct({ start: Codec.optional(Codec.string) })),
 })

-export const ProjectState = Persistence.struct({
-  value: Schema.optional(ProjectMeta),
+export const ProjectState = Codec.struct({
+  value: Codec.optional(ProjectMeta),
 })

-export const IconState = Persistence.struct({
-  value: Schema.optional(Schema.String),
+export const IconState = Codec.struct({
+  value: Codec.optional(Codec.string),
 })
+
@@ -1,13 +1,12 @@
 import { describe, expect, test } from "bun:test"
 import { canRemoveServer, createServerProjects, resolveServerList, ServerConnection } from "./registry"
-import { Schema } from "effect"
 import { serverState } from "./persistence"
 import { createStore } from "solid-js/store"
 import { ServerScope } from "./scope"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"

 function serverSchema() {
-  return Persistence.withInitial(serverState(), {
+  return Codec.withInitial(serverState(), {
    list: [],
    hidden: {},
    projects: {},
@@ -19,7 +18,7 @@ function serverSchema() {
 describe("resolveServerList", () => {
  test("lets startup auth_token credentials override a persisted same-url server", () => {
    const list = resolveServerList({
-      stored: Schema.decodeUnknownSync(serverSchema())({ list: [{ url: "https://server.example.test" }] }).list,
+      stored: Codec.decodeOrThrow(serverSchema(), { list: [{ url: "https://server.example.test" }] }).list,
      props: [
        {
          type: "http",
@@ -44,7 +43,7 @@ describe("resolveServerList", () => {

  test("keeps persisted credentials when startup has no auth_token", () => {
    const list = resolveServerList({
-      stored: Schema.decodeUnknownSync(serverSchema())({
+      stored: Codec.decodeOrThrow(serverSchema(), {
        list: [{ url: "https://server.example.test", password: "saved" }],
      }).list,
      props: [{ type: "http", http: { url: "https://server.example.test" } }],
@@ -77,7 +76,7 @@ test("treats WSL sidecars as remote server connections", () => {
 })

 test("keeps exact persisted server identities and prevents removing provided servers", () => {
-  const stored = Schema.decodeUnknownSync(serverSchema())({
+  const stored = Codec.decodeOrThrow(serverSchema(), {
    list: ["http://localhost:4096", "http://localhost:4096/", "http://127.0.0.1:4096"],
  }).list
  expect(resolveServerList({ stored }).map((server) => String(ServerConnection.key(server)))).toEqual([
@@ -91,7 +90,7 @@ test("keeps exact persisted server identities and prevents removing provided ser
 })

 test("project actions update schema-derived state and follow dynamic server scopes", () => {
-  const [store, setStore] = createStore(Schema.decodeUnknownSync(serverSchema())({}))
+  const [store, setStore] = createStore(Codec.decodeOrThrow(serverSchema(), {}))
  const props: { server: ServerConnection.Key; canonicalLocalServer?: ServerConnection.Key } = {
    server: ServerConnection.Key.make("https://remote.example"),
  }
@@ -115,3 +114,4 @@ test("project actions update schema-derived state and follow dynamic server scop
  expect(store.projects.local).toEqual([{ worktree: "/local", expanded: true }])
  expect(store.projects[props.server]).toEqual([{ worktree: "/remote", expanded: false }])
 })
+
@@ -33,8 +33,6 @@ export type FileContent = {
  }
  encoding?: "base64"
  mimeType?: string
-  /** On-disk size when the bytes themselves are not retained. */
-  size?: number
 }

 export type Path = {
@@ -1,12 +1,12 @@
-import { Option, Schema } from "effect"
+import { Codec } from "@/runtime/persistence/codec"
 import { normalizeServerUrl } from "@/runtime/server/registry"

-const pairing = Schema.fromJsonString(
-  Schema.Struct({
-    urls: Schema.Array(Schema.String),
-    username: Schema.Literal("opencode"),
-    password: Schema.String,
-  }),
+const pairing = Codec.fromJsonString(
+  Codec.struct({
+    urls: Codec.array(Codec.string),
+    username: Codec.literal("opencode"),
+    password: Codec.string,
+  }),
 )

 export function serverAddress(value: string) {
@@ -20,9 +20,10 @@ export function serverAddress(value: string) {
 }

 export function decodePairingCode(value: string) {
-  const result = Schema.decodeUnknownOption(pairing)(value)
-  if (Option.isNone(result)) return
-  const urls = [...new Set(result.value.urls.map(serverAddress).filter((url) => url !== undefined))]
-  if (!urls.length) return
-  return { urls, password: result.value.password }
+  const result = Codec.decodeOption(pairing, value)
+  if (!result) return
+  const urls = [...new Set(result.urls.map(serverAddress).filter((url) => url !== undefined))]
+  if (!urls.length) return
+  return { urls, password: result.password }
 }
+
@@ -1,4 +1,3 @@
-import { Effect, Fiber } from "effect"
 import { createEffect, onCleanup } from "solid-js"
 import { createStore } from "solid-js/store"
 import type { SshConfig, SshItem, SshPlatform } from "./types"
@@ -24,7 +23,8 @@ export function createSshController(input: {
      | undefined
    >
  >({})
-  const tasks = new Map<string, Fiber.Fiber<void>>()
+  // One in-flight request per server; cancelling settles it immediately and ignores its outcome.
+  const tasks = new Map<string, { cancelled: boolean }>()
  const item = (id: string) => input.items().find((item) => item.config.id === id)
  const settle = (id: string) => {
    const attempt = attempts[id]
@@ -33,31 +33,32 @@ export function createSshController(input: {
    setAttempts(id, { active: false, onConnected: undefined })
    if (item(id)?.stage === "ready" && onConnected) queueMicrotask(onConnected)
  }
-  const run = (id: string, effect: Effect.Effect<unknown, unknown>) => {
-    setAttempts(id, { submitting: true, error: false })
-    tasks.set(
-      id,
-      Effect.runFork(
-        effect.pipe(
-          Effect.asVoid,
-          Effect.catch(() =>
-            Effect.sync(() => {
-              setAttempts(id, "error", true)
-              if (!attempts[id]?.prompted) input.error()
-            }),
-          ),
-          Effect.ensuring(
-            Effect.sync(() => {
-              tasks.delete(id)
-              setAttempts(id, "submitting", false)
-            }),
-          ),
-        ),
-      ),
-    )
-  }
-  onCleanup(() => {
-    Effect.runFork(Effect.forEach([...tasks.values()], Fiber.interrupt, { discard: true }))
+  const finish = (id: string, task: { cancelled: boolean }) => {
+    if (task.cancelled) return
+    task.cancelled = true
+    if (tasks.get(id) === task) tasks.delete(id)
+    setAttempts(id, "submitting", false)
+  }
+  const interrupt = (id: string) => {
+    const task = tasks.get(id)
+    if (task) finish(id, task)
+  }
+  const run = (id: string, work: () => Promise<unknown>) => {
+    setAttempts(id, { submitting: true, error: false })
+    const task = { cancelled: false }
+    tasks.set(id, task)
+    work().then(
+      () => finish(id, task),
+      () => {
+        if (task.cancelled) return
+        setAttempts(id, "error", true)
+        if (!attempts[id]?.prompted) input.error()
+        finish(id, task)
+      },
+    )
+  }
+  onCleanup(() => {
+    for (const id of [...tasks.keys()]) interrupt(id)
  })
  createEffect(() => {
    for (const item of input.items()) {
@@ -114,40 +115,32 @@ export function createSshController(input: {
        error: false,
        onConnected: options?.onConnected ?? (options?.replace ? attempts[config.id]?.onConnected : undefined),
      })
-      run(
-        config.id,
-        Effect.gen(function* () {
-          yield* Effect.tryPromise(() => api.start({ ...config, replace: options?.replace }))
-          // Observe admission before treating an older disconnected snapshot as cancellation.
-          yield* Effect.tryPromise(input.refresh)
-        }),
-      )
+      run(config.id, async () => {
+        await api.start({ ...config, replace: options?.replace })
+        // Observe admission before treating an older disconnected snapshot as cancellation.
+        await input.refresh()
+      })
    },
    respond: (id: string, prompt: string, value: string) => {
      const api = input.api
      if (!api || item(id)?.prompt?.id !== prompt || attempts[id]?.submitting) return
      if (attempts[id]?.answered === prompt && !attempts[id]?.error) return
      setAttempts(id, "answered", prompt)
-      run(
-        id,
-        Effect.tryPromise(() => api.respond(id, prompt, value)),
-      )
+      run(id, () => api.respond(id, prompt, value))
    },
-    cancel: (id: string) => {
-      const task = tasks.get(id)
-      const api = input.api
-      Effect.runFork(
-        Effect.gen(function* () {
-          if (task) yield* Fiber.interrupt(task)
-          setAttempts(id, undefined)
-          if (!api) return
-          yield* Effect.tryPromise(() => api.cancel(id))
-          if (!item(id)?.saved) yield* Effect.tryPromise(() => api.forget(id))
-        }).pipe(Effect.ignore),
-      )
+    cancel: (id: string) => {
+      const api = input.api
+      interrupt(id)
+      setAttempts(id, undefined)
+      if (!api) return
+      void api
+        .cancel(id)
+        .then(() => (item(id)?.saved ? undefined : api.forget(id)))
+        .catch(() => undefined)
    },
    restore: (config: SshConfig) => input.api?.start({ ...config, background: true }),
    disconnect: (id: string) => input.api?.disconnect(id),
    forget: (id: string) => input.api?.forget(id),
  }
 }
+
@@ -0,0 +1,61 @@
+import { Schema } from "effect"
+
+// The SSH state contract between the desktop main process and its renderer. Only the main process
+// needs the schemas (its RPC server validates with them); the renderer imports the types from ./types.
+
+export const SshConfig = Schema.Struct({ id: Schema.String, target: Schema.String, name: Schema.String })
+export type SshConfig = typeof SshConfig.Type
+export const SshHttp = Schema.Struct({ url: Schema.String, password: Schema.String })
+export type SshHttp = typeof SshHttp.Type
+export const SshStage = Schema.Literals([
+  "disconnected",
+  "connecting",
+  "checking",
+  "downloading",
+  "uploading",
+  "starting",
+  "ready",
+  "authentication",
+  "incompatible",
+  "failed",
+])
+export const SshPrompt = Schema.Struct({
+  id: Schema.String,
+  text: Schema.String,
+  confirm: Schema.Boolean,
+})
+export const SshItem = Schema.Struct({
+  config: SshConfig,
+  saved: Schema.Boolean,
+  destination: Schema.optional(Schema.String),
+  stage: SshStage,
+  http: Schema.optional(SshHttp),
+  prompt: Schema.optional(SshPrompt),
+  authenticatingElsewhere: Schema.optional(Schema.Boolean),
+  detail: Schema.String,
+  error: Schema.optional(
+    Schema.Literals([
+      "connection",
+      "input",
+      "platform",
+      "version",
+      "install",
+      "service",
+      "host-key",
+      "ssh-missing",
+      "unpublished",
+    ]),
+  ),
+})
+export type SshItem = typeof SshItem.Type
+export const SshState = Schema.Struct({ servers: Schema.Array(SshItem) })
+export type SshState = typeof SshState.Type
+export const SshStart = Schema.Struct({
+  id: Schema.String,
+  target: Schema.String,
+  name: Schema.String,
+  replace: Schema.optional(Schema.Boolean),
+  background: Schema.optional(Schema.Boolean),
+})
+export type SshStart = typeof SshStart.Type
+
@@ -1,63 +1,9 @@
-import { Schema } from "effect"
-export { sshHostname, sshName } from "./name"
-export { isSshConnecting } from "./status"
-
-export const SshConfig = Schema.Struct({ id: Schema.String, target: Schema.String, name: Schema.String })
-export type SshConfig = typeof SshConfig.Type
-export const SshHttp = Schema.Struct({ url: Schema.String, password: Schema.String })
-export type SshHttp = typeof SshHttp.Type
-export const SshStage = Schema.Literals([
-  "disconnected",
-  "connecting",
-  "checking",
-  "downloading",
-  "uploading",
-  "starting",
-  "ready",
-  "authentication",
-  "incompatible",
-  "failed",
-])
-export const SshPrompt = Schema.Struct({
-  id: Schema.String,
-  text: Schema.String,
-  confirm: Schema.Boolean,
-})
-export const SshItem = Schema.Struct({
-  config: SshConfig,
-  saved: Schema.Boolean,
-  destination: Schema.optional(Schema.String),
-  stage: SshStage,
-  http: Schema.optional(SshHttp),
-  prompt: Schema.optional(SshPrompt),
-  authenticatingElsewhere: Schema.optional(Schema.Boolean),
-  detail: Schema.String,
-  error: Schema.optional(
-    Schema.Literals([
-      "connection",
-      "input",
-      "platform",
-      "version",
-      "install",
-      "service",
-      "host-key",
-      "ssh-missing",
-      "unpublished",
-    ]),
-  ),
-})
-export type SshItem = typeof SshItem.Type
-export const SshState = Schema.Struct({ servers: Schema.Array(SshItem) })
-export type SshState = typeof SshState.Type
-export const SshStart = Schema.Struct({
-  id: Schema.String,
-  target: Schema.String,
-  name: Schema.String,
-  replace: Schema.optional(Schema.Boolean),
-  background: Schema.optional(Schema.Boolean),
-})
-export type SshStart = typeof SshStart.Type
-
+export { sshHostname, sshName } from "./name"
+export { isSshConnecting } from "./status"
+import type { SshConfig, SshHttp, SshItem, SshStart, SshState } from "./schema"
+
+export type { SshConfig, SshHttp, SshItem, SshStart, SshState }
+
 export type SshPlatform = {
  getState(): Promise<SshState>
  subscribe(callback: (state: SshState) => void): () => void
@@ -70,3 +16,5 @@ export type SshPlatform = {
  forget(id: string): Promise<void>
  openConfig(): Promise<void>
 }
+
+
@@ -1,15 +1,14 @@
-import { batch, createEffect, createMemo, createRoot, getOwner, on, onCleanup, runWithOwner } from "solid-js"
+import { createEffect, createMemo, getOwner, on, onCleanup, runWithOwner } from "solid-js"
 import { createStore, reconcile } from "solid-js/store"
 import { createSimpleContext } from "@opencode/ui/context"
+import type { Browser } from "@opencode/plugin-browser/rpc"
 import { useLanguage } from "@/runtime/i18n/language"
 import type { BrowserPaneCommand } from "@/runtime/platform/browser-pane"
 import { usePlatform } from "@/runtime/platform/platform"
 import type { useServer } from "@/runtime/server/current"
-import type { SessionStateKey } from "@/runtime/server/scope"
 import { useSettings } from "@/settings/model"
 import { findSessionTab, tabKey, useTabs } from "@/shell/tabs/tabs"
-import { useCurrentRoute, useLayout } from "@/shell/state/layout"
-import { sessionBrowserTab } from "@/shell/state/session-tabs"
+import { useCurrentRoute } from "@/shell/state/layout"
 import { createEventListener } from "@solid-primitives/event-listener"
 import { createBrowserConnection, type BrowserConnectionState } from "./connection"

@@ -36,14 +35,13 @@ export const { use: useBrowserAttachments, provider: BrowserAttachmentsProvider
    const settings = useSettings()
    const language = useLanguage()
    const shellTabs = useTabs()
-    const layout = useLayout()
    const route = useCurrentRoute()
    const owner = getOwner()
    const [store, setStore] = createStore<Record<string, BrowserAttachment | undefined>>({})
    // Servers whose plugin lacks the browser RPC; sessions on them stop retrying.
    const [unsupported, setUnsupported] = createStore<Record<string, true | undefined>>({})
    const live = new Map<string, Live>()
-    const preview = new Map<string, Set<(path: string) => void>>()
+    const focus = new Map<string, Set<(tabID: Browser.TabID) => void>>()
    const key = (server: Server, sessionID: string) => `${server.key}\n${sessionID}`
    const enabled = createMemo(
      () => !!platform.browserPane && settings.ready() && settings.general.experimentalBrowser(),
@@ -89,14 +87,11 @@ export const { use: useBrowserAttachments, provider: BrowserAttachmentsProvider
      enabled,
      supported: (server: Server) => !unsupported[server.key],
      state: (server: Server, sessionID: string) => store[key(server, sessionID)],
-      attach(server: Server, sessionID: string, sessionKey: SessionStateKey) {
+      attach(server: Server, sessionID: string) {
        const id = key(server, sessionID)
        if (live.has(id)) return
        const pane = platform.browserPane
        if (!pane || !enabled() || unsupported[server.key] || server.health?.incompatible) return
-        // Focus requests write to the owning session's layout even while another shell tab is routed,
-        // so the Review pane and browser tab are already selected when the user returns to it.
-        const tabs = createRoot((dispose) => ({ dispose, layout: layout.tabs(sessionKey) }), owner)
        const connection = createBrowserConnection({
          pane,
          // Resolve the current port at every wake, including after sidecar replacement.
@@ -105,15 +100,7 @@ export const { use: useBrowserAttachments, provider: BrowserAttachmentsProvider
            sessionID,
            endpoint: { ...server.conn.http, url: server.ctx.sdk.url },
          }),
-          focus: (tabID) => {
-            const tab = sessionBrowserTab(tabID)
-            batch(() => {
-              shellTabs.setPane(findSessionTab(shellTabs.store, server.key, sessionID), "review", true)
-              if (!tabs.layout.all().includes(tab)) tabs.layout.setAll([...tabs.layout.all(), tab])
-              tabs.layout.setActive(tab)
-            })
-          },
-          preview: (path) => preview.get(id)?.forEach((listener) => listener(path)),
+          focus: (tabID) => focus.get(id)?.forEach((listener) => listener(tabID)),
          change: (state) => {
            if (state.error === "browser.pane.unsupported") {
              setUnsupported(server.key, true)
@@ -151,18 +138,17 @@ export const { use: useBrowserAttachments, provider: BrowserAttachmentsProvider
        entry.dispose = () => {
          unsubscribe?.forEach((dispose) => dispose())
          connection.dispose()
-          tabs.dispose()
        }
      },
-      /** Agent requests to show a file in this session's Review pane. */
-      onPreview(server: Server, sessionID: string, listener: (path: string) => void) {
+      /** Desktop focus requests for a mounted session route; nothing is replayed to routes mounted later. */
+      onFocus(server: Server, sessionID: string, listener: (tabID: Browser.TabID) => void) {
        const id = key(server, sessionID)
-        const listeners = preview.get(id) ?? new Set()
+        const listeners = focus.get(id) ?? new Set()
        listeners.add(listener)
-        preview.set(id, listeners)
+        focus.set(id, listeners)
        return () => {
          listeners.delete(listener)
-          if (!listeners.size) preview.delete(id)
+          if (!listeners.size) focus.delete(id)
        }
      },
      command(server: Server, sessionID: string, command: BrowserPaneCommand) {
@@ -28,12 +28,10 @@ function fixture() {
    commands: Browser.Action[]
  }[] = []
  const endpoint = { url: "http://localhost:4096" }
-  const previews: string[] = []
  const connection = createBrowserConnection({
    target: () => ({ serverKey: "browser-test", sessionID: "ses_browser", endpoint: { ...endpoint } }),
    change: (state) => states.push(state),
    focus: () => {},
-    preview: (path) => previews.push(path),
    pane: {
      register(target, emit) {
        const call = { target, emit, closed: false, commands: [] as Browser.Action[] }
@@ -52,21 +50,9 @@ function fixture() {
  })
  connection.wake()
  calls[0].emit({ type: "state", state: browser })
-  return { connection, calls, states, endpoint, previews }
+  return { connection, calls, states, endpoint }
 }

-test("preview requests reach the session without touching connection state", () => {
-  const app = fixture()
-  try {
-    const before = app.states.length
-    app.calls[0].emit({ type: "preview", path: "docs/report.pdf" })
-    expect(app.previews).toEqual(["docs/report.pdf"])
-    expect(app.states).toHaveLength(before)
-  } finally {
-    app.connection.dispose()
-  }
-})
-
 test("suspension retains tabs and reconnects once on demand using the current endpoint", async () => {
  const app = fixture()
  try {
@@ -19,7 +19,6 @@ export function createBrowserConnection(input: {
  target: () => BrowserPaneTarget
  change: (state: BrowserConnectionState) => void
  focus: (tabID: Browser.TabID) => void
-  preview: (path: string) => void
 }) {
  const state: BrowserConnectionState = { browser: null, suspended: false }
  let disposed = false
@@ -34,7 +33,6 @@ export function createBrowserConnection(input: {
      (event) => {
        if (disposed || state.registration !== registration) return
        if (event.type === "focus") return input.focus(event.tabID)
-        if (event.type === "preview") return input.preview(event.path)
        if (event.error === "browser.pane.unsupported" || event.error === "browser.pane.replaced") {
          blocked = true
          registration.close()
@@ -1,4 +1,4 @@
-import { batch, createEffect, createMemo, on } from "solid-js"
+import { batch, createEffect, createMemo, on, onCleanup } from "solid-js"
 import type { Browser } from "@opencode/plugin-browser/rpc"
 import { createStore } from "solid-js/store"
 import { useLanguage } from "@/runtime/i18n/language"
@@ -33,6 +33,13 @@ export function createSessionBrowser(session: SessionModel) {
      attachment()?.browser?.tabs.filter((tab) => session.layout.tabs().all().includes(sessionBrowserTab(tab.id))) ??
      [],
  )
+  const focus = (tabID: Browser.TabID) => {
+    session.layout.view().reviewPanel.open()
+    const tabs = session.layout.tabs()
+    const key = sessionBrowserTab(tabID)
+    if (!tabs.all().includes(key)) tabs.setAll([...tabs.all(), key])
+    tabs.setActive(key)
+  }
  const command = (command: BrowserPaneCommand) => {
    const sessionID = session.identity.sessionID()
    if (!sessionID) return
@@ -59,7 +66,8 @@ export function createSessionBrowser(session: SessionModel) {
  createEffect(() => {
    const sessionID = session.identity.sessionID()
    if (!sessionID) return
-    if (attachments.enabled()) attachments.attach(server, sessionID, session.layout.sessionKey())
+    if (attachments.enabled()) attachments.attach(server, sessionID)
+    onCleanup(attachments.onFocus(server, sessionID, focus))
  })
  createEffect(
    on(
@@ -20,18 +20,13 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes
  const command = useCommand()
  const state = props.browser.active
  const address = () => (state()?.url === "about:blank" ? "" : (state()?.url ?? ""))
-  const failed = () => !!state()?.loadError
  const registration = props.browser.registration
  const button = { variant: "ghost", size: "large" } as const
  const [store, setStore] = createStore({
    address: "",
    editing: false,
-    submitted: false,
-    // A submitted navigation the browser has not reported yet; keeps the empty state hidden meanwhile.
-    navigating: false,
    visible: typeof document === "undefined" || document.visibilityState === "visible",
  })
-  const empty = () => !address() && !state()?.loading && !store.navigating
  let surface: HTMLDivElement | undefined
  let addressDisplay: HTMLDivElement | undefined
  let frame: number | undefined
@@ -48,7 +43,7 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes
      title: language.t("command.browser.reload"),
      category: language.t("command.category.view"),
      keybind: "f5",
-      disabled: !props.visible || !address(),
+      disabled: !props.visible || !state(),
      onSelect: () => {
        const tab = state()
        if (tab) props.browser.command({ type: "reload", tabID: tab.id })
@@ -76,9 +71,7 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes
    const top = Math.round(rect.top * zoom)
    const right = Math.round(rect.right * zoom)
    const bottom = Math.round(rect.bottom * zoom)
-    // The desktop page hides blank and loading documents itself; only hide here
-    // while the pane shows its own empty or failed state over the surface.
-    const visible = props.visible && store.visible && !empty() && !failed() && !dialog.active && !covered(rect)
+    const visible = props.visible && store.visible && !dialog.active && !covered(rect)
    // The cutout exposes the app backdrop outside the rounded Review card,
    // not the browser surface inside it.
    const color = getComputedStyle(
@@ -114,25 +107,7 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes
    if (frame === undefined) frame = requestAnimationFrame(tick)
  }

-  createEffect(on([() => state()?.id, address], () => !store.editing && setStore("address", address())))
-  // Any reported movement, including a rejected or blocked request, ends the submitted navigation.
-  createEffect(
-    on(
-      [() => state()?.id, () => state()?.generation, () => state()?.loading, () => props.browser.error()],
-      () => setStore("navigating", false),
-      { defer: true },
-    ),
-  )
-  // A blocked or rejected submission leaves the page where it was; show that page's URL again.
-  createEffect(
-    on(
-      () => props.browser.error(),
-      (error) => {
-        if (error && !store.editing) setStore("address", address())
-      },
-      { defer: true },
-    ),
-  )
+  createEffect(() => !store.editing && setStore("address", address()))
  createEffect(
    on(registration, (current) => {
      // Session routes can change before this pane unmounts. Hide the registration
@@ -148,8 +123,6 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes
        () => store.visible,
        () => props.visible,
        () => state()?.id,
-        empty,
-        failed,
        registration,
      ],
      () => {
@@ -184,7 +157,7 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes

  return (
    <aside id="browser-panel" class="relative size-full min-w-0 overflow-hidden bg-v2-background-bg-base flex flex-col">
-      <div class="h-10 shrink-0 flex items-center gap-1 px-3 border-b border-v2-border-border-muted">
+      <div class="h-10 shrink-0 flex items-center gap-1 px-2 border-b border-v2-border-border-muted">
        <For each={["back", "forward"] as const}>
          {(direction) => (
            <Tooltip placement="top" value={language.t(direction === "back" ? "common.goBack" : "common.goForward")}>
@@ -220,7 +193,7 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes
        >
          <IconButton
            {...button}
-            disabled={!state()?.loading && !address()}
+            disabled={!state()}
            aria-label={language.t(state()?.loading ? "prompt.action.stop" : "error.page.action.reload")}
            onClick={() => {
              const tab = state()
@@ -239,13 +212,8 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes
          onSubmit={(event) => {
            event.preventDefault()
            const tab = state()
-            const url = store.address.trim()
-            if (!tab) return
-            if (url || failed()) {
-              setStore({ submitted: true, address: url, navigating: true })
-              props.browser.command({ type: "navigate", tabID: tab.id, url: url || "about:blank" })
-            }
-            event.currentTarget.querySelector("input")?.blur()
+            if (tab && store.address.trim())
+              props.browser.command({ type: "navigate", tabID: tab.id, url: store.address })
          }}
        >
          <input
@@ -256,14 +224,8 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes
            disabled={!state()}
            placeholder={language.t("session.browser.address.placeholder")}
            aria-label={language.t("session.browser.address")}
-            onFocus={(event) => {
-              setStore("editing", true)
-              event.currentTarget.select()
-            }}
-            onClick={(event) => event.currentTarget.select()}
-            onBlur={() =>
-              setStore({ editing: false, address: store.submitted ? store.address : address(), submitted: false })
-            }
+            onFocus={() => setStore("editing", true)}
+            onBlur={() => setStore({ editing: false, address: address() })}
            onInput={(event) => setStore("address", event.currentTarget.value)}
            onScroll={(event) => {
              if (addressDisplay) addressDisplay.scrollLeft = event.currentTarget.scrollLeft
@@ -281,27 +243,12 @@ export function SessionBrowserPane(props: { browser: ReturnType<typeof createSes
          </div>
        </form>
      </div>
-      <Show when={props.browser.error() && !failed()}>
+      <Show when={props.browser.error()}>
        <div class="shrink-0 px-3 py-1.5 text-12-regular text-text-danger-base border-b border-v2-border-border-muted">
          {props.browser.error()}
        </div>
      </Show>
      <div ref={surface} class="min-h-0 flex-1 bg-v2-background-bg-base flex items-center justify-center">
-        <Show when={(empty() || failed()) && !props.browser.suspended()}>
-          {/* Add the 40px toolbar to the file empty state's 160px bottom padding to align their centers. */}
-          <div
-            dir="auto"
-            class="flex size-full flex-col items-center justify-center gap-2 p-6 pb-[200px] text-center text-text-weak"
-          >
-            <Icon name="globe" size="large" class="mb-2 shrink-0" />
-            <div class="text-[13px] font-medium leading-[var(--line-height-compact)] text-text-strong">
-              {language.t(failed() ? "session.browser.failed.title" : "session.browser.empty.title")}
-            </div>
-            <div class="text-13-regular leading-[var(--line-height-base)]">
-              {language.t(failed() ? "session.browser.failed.description" : "session.browser.empty.description")}
-            </div>
-          </div>
-        </Show>
        <Show when={props.browser.suspended()}>
          <p class="px-6 text-center text-13-regular text-v2-text-text-subtle" role="status">
            {language.t("session.browser.suspended")}
@@ -1,94 +0,0 @@
-/* The control defaults to a fixed 232px with equal segments; here it hugs its two labels. */
-[data-slot="artifact-toolbar"] [data-slot="segmented-control-v2"] {
-  width: auto;
-}
-
-[data-slot="artifact-toolbar"] [data-slot="segmented-control-v2-item"] {
-  flex: 0 0 auto;
-  padding: 0 14px;
-}
-
-/* Shrink-wrapped segments round the label box down a fraction; the ellipsis overflow then clips glyph edges. */
-[data-slot="artifact-toolbar"] [data-slot="segmented-control-v2-item-label"] {
-  overflow: visible;
-  max-width: none;
-}
-
-[data-slot="artifact-stage"] {
-  --artifact-check: color-mix(in oklch, var(--v2-text-text-base) 5%, transparent);
-  background-color: var(--v2-background-bg-deep);
-}
-
-[data-slot="artifact-stage"][data-checker] {
-  background-image:
-    linear-gradient(45deg, var(--artifact-check) 25%, transparent 25%),
-    linear-gradient(-45deg, var(--artifact-check) 25%, transparent 25%),
-    linear-gradient(45deg, transparent 75%, var(--artifact-check) 75%),
-    linear-gradient(-45deg, transparent 75%, var(--artifact-check) 75%);
-  background-size: 16px 16px;
-  background-position:
-    0 0,
-    0 8px,
-    8px -8px,
-    -8px 0;
-}
-
-[data-slot="artifact-media"] {
-  display: block;
-  border-radius: 4px;
-  box-shadow:
-    0 0 0 0.5px var(--v2-border-border-base),
-    0 12px 32px -12px color-mix(in oklch, var(--v2-text-text-base) 25%, transparent);
-}
-
-[data-slot="artifact-stage"][data-zoom="fit"] [data-slot="artifact-media"] {
-  max-width: 100%;
-  max-height: 100%;
-  object-fit: contain;
-}
-
-[data-slot="artifact-stage"][data-zoom="fit"][data-overflow] [data-slot="artifact-media"] {
-  cursor: zoom-in;
-}
-
-[data-slot="artifact-stage"][data-zoom="actual"] [data-slot="artifact-media"] {
-  cursor: zoom-out;
-}
-
-[data-slot="artifact-table"] {
-  border-collapse: separate;
-  border-spacing: 0;
-  font-variant-numeric: tabular-nums;
-}
-
-[data-slot="artifact-table"] th,
-[data-slot="artifact-table"] td {
-  padding: 5px 12px;
-  border-bottom: 1px solid var(--v2-border-border-muted);
-  border-inline-end: 1px solid var(--v2-border-border-muted);
-  white-space: pre;
-  max-width: 40ch;
-  overflow: hidden;
-  text-overflow: ellipsis;
-  text-align: start;
-  line-height: var(--line-height-compact);
-}
-
-[data-slot="artifact-table"] th {
-  position: sticky;
-  top: 0;
-  z-index: 1;
-  background: var(--v2-background-bg-layer-01);
-  font-weight: var(--font-weight-medium);
-  color: var(--v2-text-text-muted);
-}
-
-[data-slot="artifact-table"] tbody tr:hover td {
-  background: color-mix(in oklch, var(--v2-text-text-base) 3%, transparent);
-}
-
-[data-slot="artifact-table"] td[data-index] {
-  color: var(--v2-text-text-faint);
-  text-align: end;
-  user-select: none;
-}
@@ -1,454 +0,0 @@
-import { createEffect, createMemo, For, Match, on, onCleanup, Show, Switch, type JSX } from "solid-js"
-import { createStore } from "solid-js/store"
-import { createResizeObserver } from "@solid-primitives/resize-observer"
-import { Button } from "@opencode/ui/button"
-import { FileIcon } from "@opencode/ui/file-icon"
-import { SegmentedControl, SegmentedControlItem } from "@opencode/ui/segmented-control"
-import { ScrollView } from "@opencode/ui/scroll-view"
-import { Markdown } from "@opencode/session-ui/markdown"
-import { MarkdownProvider, useMarkdown } from "@opencode/session-ui/context/markdown"
-import { getDirectory, getFilename } from "@opencode/util/path"
-import type { FileContent } from "@/runtime/server/types"
-import { useLanguage } from "@/runtime/i18n/language"
-import {
-  artifactKind,
-  blobUrlFromContent,
-  contentBytes,
-  parseDelimited,
-  resolveArtifactPath,
-  type ArtifactKind,
-} from "@/workspaces/files/artifact"
-import { useArtifactOpener } from "@/session/files/open-artifact"
-import "./artifact-view.css"
-
-type ArtifactMode = "preview" | "source"
-
-/** Facts a viewer learns from the decoded media, shown in the toolbar. */
-type ArtifactInfo = { width?: number; height?: number; duration?: number; rows?: number; columns?: number }
-
-type MediaProps = {
-  path: string
-  content: FileContent
-  onInfo: (info: ArtifactInfo) => void
-  /** The browser could not decode the bytes; the host falls back to the binary placeholder. */
-  onError: () => void
-}
-
-/** Kinds that render a preview from their text and can toggle back to highlighted source. */
-const previewableKinds = new Set<ArtifactKind>(["svg", "html", "markdown", "mermaid", "table"])
-
-/**
- * Renders a loaded non-text file: media, documents, and data get a dedicated viewer with a toolbar;
- * previewable text kinds can switch to `source`, which the host supplies (its code view).
- */
-export function ArtifactView(props: { path: string; content: FileContent; cacheKey?: string; source: JSX.Element }) {
-  const language = useLanguage()
-  const [state, setState] = createStore({
-    mode: "preview" as ArtifactMode,
-    info: {} as ArtifactInfo,
-    // Media the browser could not decode falls back to the binary placeholder.
-    undecodable: false,
-  })
-  createEffect(
-    on(
-      () => props.content,
-      () => setState({ mode: "preview", info: {}, undecodable: false }),
-      { defer: true },
-    ),
-  )
-
-  const kind = createMemo<ArtifactKind | "binary">(() => {
-    if (props.content.type === "binary" && !props.content.mimeType) return "binary"
-    if (state.undecodable) return "binary"
-    return artifactKind(props.path)
-  })
-  const previewable = createMemo(() => {
-    const value = kind()
-    return value !== "binary" && previewableKinds.has(value)
-  })
-  const meta = createMemo(() => {
-    const info = state.info
-    return [
-      info.width && info.height ? `${info.width} × ${info.height}` : undefined,
-      info.duration ? formatDuration(info.duration) : undefined,
-      info.rows !== undefined ? language.plural("file.view.table.rows", Math.max(0, info.rows - 1)) : undefined,
-      info.columns !== undefined ? language.plural("file.view.table.columns", info.columns) : undefined,
-      formatBytes(language.intl(), contentBytes(props.content)),
-    ].filter((item): item is string => !!item)
-  })
-
-  const media = { onInfo: (info: ArtifactInfo) => setState("info", info), onError: () => setState("undecodable", true) }
-  const rendered = () => (
-    <ScrollView class="min-h-0 flex-1">
-      <Show
-        when={kind() === "markdown"}
-        fallback={<ArtifactMermaid text={props.content.content} cacheKey={props.cacheKey} />}
-      >
-        <ArtifactMarkdown path={props.path} text={props.content.content} cacheKey={props.cacheKey} />
-      </Show>
-    </ScrollView>
-  )
-
-  return (
-    <>
-      <ArtifactToolbar
-        mode={state.mode}
-        onModeChange={previewable() ? (mode) => setState("mode", mode) : undefined}
-        meta={meta()}
-        actions={
-          <Show when={kind() === "html"}>
-            <OpenInBrowserButton path={props.path} />
-          </Show>
-        }
-      />
-      <Show when={!previewable() || state.mode === "preview"} fallback={props.source}>
-        <Switch>
-          <Match when={kind() === "image" || kind() === "svg"}>
-            <ArtifactImage path={props.path} content={props.content} {...media} />
-          </Match>
-          <Match when={kind() === "video"}>
-            <ArtifactVideo path={props.path} content={props.content} {...media} />
-          </Match>
-          <Match when={kind() === "audio"}>
-            <ArtifactAudio path={props.path} content={props.content} {...media} />
-          </Match>
-          <Match when={kind() === "pdf" || kind() === "html"}>
-            <ArtifactFrame path={props.path} content={props.content} kind={kind() === "pdf" ? "pdf" : "html"} />
-          </Match>
-          <Match when={kind() === "font"}>
-            <ArtifactFont path={props.path} content={props.content} />
-          </Match>
-          <Match when={kind() === "table"}>
-            <ArtifactTable path={props.path} text={props.content.content} onInfo={media.onInfo} />
-          </Match>
-          <Match when={kind() === "markdown" || kind() === "mermaid"}>{rendered()}</Match>
-          <Match when={kind() === "binary"}>
-            <ArtifactBinary path={props.path} size={formatBytes(language.intl(), contentBytes(props.content))} />
-          </Match>
-        </Switch>
-      </Show>
-    </>
-  )
-}
-
-function formatBytes(locale: string, bytes: number) {
-  const units = ["byte", "kilobyte", "megabyte", "gigabyte"] as const
-  const index = Math.min(units.length - 1, bytes > 0 ? Math.floor(Math.log10(bytes) / 3) : 0)
-  const value = bytes / 1000 ** index
-  return new Intl.NumberFormat(locale, {
-    style: "unit",
-    unit: units[index],
-    // "short" bytes render as the singular "byte"; the long form pluralizes correctly.
-    unitDisplay: index === 0 ? "long" : "short",
-    maximumFractionDigits: value >= 100 || index === 0 ? 0 : 1,
-  }).format(value)
-}
-
-function formatDuration(seconds: number) {
-  const total = Math.round(seconds)
-  const minutes = Math.floor(total / 60)
-  return `${minutes}:${String(total % 60).padStart(2, "0")}`
-}
-
-function ArtifactToolbar(props: {
-  mode?: ArtifactMode
-  onModeChange?: (mode: ArtifactMode) => void
-  meta: string[]
-  actions?: JSX.Element
-}) {
-  const language = useLanguage()
-  return (
-    <div data-slot="artifact-toolbar" class="flex h-10 shrink-0 items-center gap-3 px-4">
-      <Show when={props.onModeChange}>
-        <SegmentedControl
-          value={props.mode ?? "preview"}
-          onChange={(value) => {
-            if (value === "preview" || value === "source") props.onModeChange?.(value)
-          }}
-        >
-          <SegmentedControlItem value="preview">{language.t("file.view.preview")}</SegmentedControlItem>
-          <SegmentedControlItem value="source">{language.t("file.view.source")}</SegmentedControlItem>
-        </SegmentedControl>
-      </Show>
-      <div class="ms-auto flex min-w-0 items-center gap-3">
-        <div class="flex min-w-0 items-center gap-2 text-12-regular text-text-weak">
-          <For each={props.meta}>
-            {(item, index) => (
-              <>
-                <Show when={index() > 0}>
-                  <span aria-hidden class="text-text-faint">
-                    ·
-                  </span>
-                </Show>
-                <span class="truncate tabular-nums">{item}</span>
-              </>
-            )}
-          </For>
-        </div>
-        {props.actions}
-      </div>
-    </div>
-  )
-}
-
-function OpenInBrowserButton(props: { path: string }) {
-  const language = useLanguage()
-  const artifacts = useArtifactOpener()
-  return (
-    <Show when={artifacts.canOpenInBrowser(props.path)}>
-      <Button size="small" variant="ghost" icon="globe" onClick={() => artifacts.openInBrowser(props.path)}>
-        {language.t("file.view.openInBrowser")}
-      </Button>
-    </Show>
-  )
-}
-
-function createBlobUrl(content: () => FileContent) {
-  return createMemo(() => {
-    const value = blobUrlFromContent(content())
-    onCleanup(() => URL.revokeObjectURL(value))
-    return value
-  })
-}
-
-/** Images and SVG previews: fit the pane, click to inspect at 1:1 when the image is larger. */
-function ArtifactImage(props: MediaProps) {
-  const url = createBlobUrl(() => props.content)
-  const [state, setState] = createStore({ zoom: "fit" as "fit" | "actual", overflow: false, width: 0, height: 0 })
-  let stage: HTMLDivElement | undefined
-  const measure = () => {
-    if (!stage) return
-    setState("overflow", state.width > stage.clientWidth - 48 || state.height > stage.clientHeight - 48)
-  }
-  createResizeObserver(
-    () => stage,
-    () => measure(),
-  )
-  createEffect(() => {
-    url()
-    setState({ zoom: "fit", overflow: false })
-  })
-  return (
-    <div
-      ref={stage}
-      data-slot="artifact-stage"
-      data-checker
-      data-zoom={state.zoom}
-      data-overflow={state.overflow || undefined}
-      class="relative min-h-0 flex-1 overflow-auto"
-    >
-      <div
-        classList={{
-          "absolute inset-0 flex items-center justify-center p-6": state.zoom === "fit",
-          "flex min-h-full min-w-full w-max items-center justify-center p-6": state.zoom === "actual",
-        }}
-      >
-        <img
-          data-slot="artifact-media"
-          src={url()}
-          alt={getFilename(props.path)}
-          draggable={false}
-          onError={() => props.onError()}
-          onLoad={(event) => {
-            const image = event.currentTarget
-            setState({ width: image.naturalWidth, height: image.naturalHeight })
-            props.onInfo({ width: image.naturalWidth, height: image.naturalHeight })
-            measure()
-          }}
-          onClick={() => {
-            if (!state.overflow && state.zoom === "fit") return
-            setState("zoom", state.zoom === "fit" ? "actual" : "fit")
-          }}
-        />
-      </div>
-    </div>
-  )
-}
-
-function ArtifactVideo(props: MediaProps) {
-  const url = createBlobUrl(() => props.content)
-  return (
-    <div data-slot="artifact-stage" data-zoom="fit" class="relative min-h-0 flex-1 overflow-hidden">
-      <div class="absolute inset-0 flex items-center justify-center p-6">
-        <video
-          data-slot="artifact-media"
-          class="w-full bg-black"
-          controls
-          preload="metadata"
-          playsinline
-          onError={() => props.onError()}
-          src={url()}
-          onLoadedMetadata={(event) => {
-            const video = event.currentTarget
-            props.onInfo({ width: video.videoWidth, height: video.videoHeight, duration: video.duration })
-          }}
-        />
-      </div>
-    </div>
-  )
-}
-
-function ArtifactAudio(props: MediaProps) {
-  const url = createBlobUrl(() => props.content)
-  return (
-    <div data-slot="artifact-stage" class="relative min-h-0 flex-1 overflow-auto">
-      <div class="absolute inset-0 flex items-center justify-center p-6">
-        <div class="flex w-full max-w-lg flex-col items-center gap-5 rounded-xl border border-v2-border-border-muted bg-v2-background-bg-base px-8 py-8 shadow-[var(--v2-elevation-raised)]">
-          <div class="flex size-14 items-center justify-center rounded-full bg-v2-background-bg-layer-02">
-            <FileIcon node={{ path: props.path, type: "file" }} class="size-7" />
-          </div>
-          <div class="max-w-full truncate text-14-medium text-text-strong">{getFilename(props.path)}</div>
-          <audio
-            class="w-full"
-            onError={() => props.onError()}
-            controls
-            preload="metadata"
-            src={url()}
-            onLoadedMetadata={(event) => props.onInfo({ duration: event.currentTarget.duration })}
-          />
-        </div>
-      </div>
-    </div>
-  )
-}
-
-function ArtifactFrame(props: { path: string; content: FileContent; kind: "pdf" | "html" }) {
-  const url = createBlobUrl(() => props.content)
-  // PDF Open Parameters: start with the thumbnail pane closed and the page fitted to the pane width.
-  const src = () => (props.kind === "pdf" ? `${url()}#navpanes=0&view=FitH` : url())
-  return (
-    <iframe
-      class="block h-full w-full flex-1 border-0 bg-white"
-      title={getFilename(props.path)}
-      src={src()}
-      // The PDF viewer is Chromium's own and does not run in a sandboxed frame. HTML runs as an
-      // opaque origin: no app storage, cookies, or credentialed requests reach it.
-      sandbox={props.kind === "html" ? "allow-scripts allow-popups allow-forms allow-modals" : undefined}
-      referrerPolicy="no-referrer"
-    />
-  )
-}
-
-function ArtifactMarkdown(props: { path: string; text: string; cacheKey?: string }) {
-  const parent = useMarkdown()
-  const artifacts = useArtifactOpener()
-  // getDirectory yields "/" for a root-level file, which would make relative links absolute.
-  const dir = createMemo(() => (props.path.includes("/") || props.path.includes("\\") ? getDirectory(props.path) : ""))
-  // Absolute references bypass the file's directory; relative ones resolve against it.
-  const resolve = (href: string) => (/^([a-z]:)?\//i.test(href) ? href : (resolveArtifactPath(dir(), href) ?? href))
-  return (
-    <MarkdownProvider
-      readImage={(src, signal) => parent?.readImage?.(resolve(src), signal) ?? Promise.resolve(undefined)}
-      openLocalFile={(href) => artifacts.open(href, dir())}
-    >
-      <div class="mx-auto w-full max-w-3xl px-8 py-6">
-        <Markdown text={props.text} cacheKey={props.cacheKey} class="select-text" />
-      </div>
-    </MarkdownProvider>
-  )
-}
-
-/** Mermaid sources render through the same fenced-block pipeline the timeline uses. */
-function ArtifactMermaid(props: { text: string; cacheKey?: string }) {
-  return (
-    <div class="mx-auto w-full max-w-4xl px-8 py-6">
-      <Markdown text={`\`\`\`mermaid\n${props.text}\n\`\`\``} cacheKey={props.cacheKey} class="select-text" />
-    </div>
-  )
-}
-
-function ArtifactTable(props: { path: string; text: string; onInfo: (info: ArtifactInfo) => void }) {
-  const language = useLanguage()
-  const parsed = createMemo(() => parseDelimited(props.text, props.path.toLowerCase().endsWith(".tsv") ? "\t" : ","))
-  createEffect(() => props.onInfo({ rows: parsed().total, columns: parsed().columns }))
-  // Pad the header to the widest row so no data column is dropped.
-  const header = () => Array.from({ length: parsed().columns }, (_, index) => parsed().rows[0]?.[index] ?? "")
-  const body = () => parsed().rows.slice(1)
-  return (
-    <div class="min-h-0 flex-1 overflow-auto">
-      <table data-slot="artifact-table" class="min-w-full text-13-regular text-text-base">
-        <thead>
-          <tr>
-            <th data-index />
-            <For each={header()}>{(cell) => <th>{cell}</th>}</For>
-          </tr>
-        </thead>
-        <tbody>
-          <For each={body()}>
-            {(row, index) => (
-              <tr>
-                <td data-index>{index() + 1}</td>
-                <For each={header()}>{(_, column) => <td>{row[column()] ?? ""}</td>}</For>
-              </tr>
-            )}
-          </For>
-        </tbody>
-      </table>
-      <Show when={parsed().total > parsed().rows.length}>
-        <div class="px-4 py-3 text-12-regular text-text-weak">
-          {language.t("file.view.table.truncated", { shown: parsed().rows.length - 1, total: parsed().total - 1 })}
-        </div>
-      </Show>
-    </div>
-  )
-}
-
-const specimenSizes = [12, 16, 24, 40, 64]
-
-function ArtifactFont(props: { path: string; content: FileContent }) {
-  const language = useLanguage()
-  const url = createBlobUrl(() => props.content)
-  const family = createMemo(() => `artifact-${Math.random().toString(36).slice(2)}`)
-  createEffect(() => {
-    const face = new FontFace(family(), `url(${url()})`)
-    document.fonts.add(face)
-    void face.load().catch(() => undefined)
-    onCleanup(() => document.fonts.delete(face))
-  })
-  return (
-    <div class="min-h-0 flex-1 overflow-auto">
-      <div class="mx-auto flex w-full max-w-3xl flex-col gap-6 px-8 py-8" style={{ "font-family": `"${family()}"` }}>
-        <div class="text-text-strong" style={{ "font-size": "56px", "line-height": "1.1" }}>
-          {getFilename(props.path).replace(/\.[^.]+$/, "")}
-        </div>
-        <div class="break-all text-text-base" style={{ "font-size": "22px", "line-height": "1.4" }}>
-          ABCDEFGHIJKLMNOPQRSTUVWXYZ
-          <br />
-          abcdefghijklmnopqrstuvwxyz
-          <br />
-          0123456789 !?&@#%(){}[]
-        </div>
-        <div class="flex flex-col gap-3 border-t border-v2-border-border-muted pt-6">
-          <For each={specimenSizes}>
-            {(size) => (
-              <div class="flex items-baseline gap-4">
-                <span
-                  class="w-8 shrink-0 text-12-regular text-text-faint tabular-nums"
-                  style={{ "font-family": "var(--font-family-mono)" }}
-                >
-                  {size}
-                </span>
-                <span class="text-text-base" style={{ "font-size": `${size}px`, "line-height": "1.25" }}>
-                  {language.t("file.view.fontSample")}
-                </span>
-              </div>
-            )}
-          </For>
-        </div>
-      </div>
-    </div>
-  )
-}
-
-function ArtifactBinary(props: { path: string; size: string }) {
-  const language = useLanguage()
-  return (
-    <div data-slot="artifact-stage" class="relative min-h-0 flex-1">
-      <div class="absolute inset-0 flex flex-col items-center justify-center gap-3 p-6 text-center">
-        <FileIcon node={{ path: props.path, type: "file" }} class="size-8 text-text-weak" />
-        <div class="text-14-medium text-text-strong">{getFilename(props.path)}</div>
-        <div class="text-13-regular text-text-weak">{language.t("file.view.binary", { size: props.size })}</div>
-      </div>
-    </div>
-  )
-}
@@ -1,4 +1,4 @@
-import { createEffect, createMemo, createSignal, Match, on, onCleanup, Show, Switch } from "solid-js"
+import { createEffect, createMemo, createSignal, Match, on, onCleanup, Switch } from "solid-js"
 import { createStore } from "solid-js/store"
 import { Dynamic } from "solid-js/web"
 import { makeEventListener } from "@solid-primitives/event-listener"
@@ -11,9 +11,8 @@ import { LineCommentOverflowIcon } from "@opencode/ui/line-comment"
 import { Menu } from "@opencode/ui/menu"
 import { Tabs } from "@opencode/ui/tabs"
 import { ScrollView } from "@opencode/ui/scroll-view"
+import { showToast } from "@/shell/notifications/toast"
 import { selectionFromLines, useFile, type FileSelection, type SelectedLineRange } from "@/workspaces/files/model"
-import { artifactKind } from "@/workspaces/files/artifact"
-import { ArtifactView } from "@/session/files/artifact-view"
 import { useComments } from "@/composer/comments"
 import { useLanguage } from "@/runtime/i18n/language"
 import { useComposerState } from "@/composer/persistence"
@@ -206,11 +205,6 @@ export function SessionFileView(props: SessionFileViewProps) {
  })
  const contents = createMemo(() => state()?.content?.content ?? "")
  const cacheKey = createMemo(() => sampledChecksum(contents()))
-  // Plain text keeps the code view; every other kind is rendered by ArtifactView.
-  const artifact = createMemo(() => {
-    const content = state()?.content
-    return content?.type === "binary" || artifactKind(path() ?? "") !== "text"
-  })
  const selectedLines = createMemo<SelectedLineRange | null>(() => {
    const p = path()
    if (!p) return null
@@ -439,42 +433,39 @@ export function SessionFileView(props: SessionFileViewProps) {
        }}
        search={search}
        class="select-text"
-        // Media and previews have their own viewers below; the code view only ever shows text.
-        media={{ mode: "off" }}
+        media={{
+          mode: "auto",
+          path: path(),
+          current: state()?.content,
+          onLoad: scrollSync.queueRestore,
+          onError: (args: { kind: "image" | "audio" | "svg" }) => {
+            if (args.kind !== "svg") return
+            showToast({
+              variant: "error",
+              title: language.t("toast.file.loadFailed.title"),
+            })
+          },
+        }}
      />
    </div>
  )

-  // The code view scrolls inside ScrollView so line state and scroll position persist per tab.
-  const codeView = (source: string) => (
-    <ScrollView class="min-h-0 flex-1" viewportRef={scrollSync.setViewport} onScroll={scrollSync.handleScroll}>
-      {renderFile(source)}
-    </ScrollView>
-  )
-
  const content = () => (
-    <div class="mt-3 relative h-full min-h-0 flex flex-col">
-      <Switch>
-        <Match when={state()?.loaded ? state()?.content : undefined}>
-          {(value) => (
-            <Show when={artifact()} fallback={codeView(value().content)}>
-              <ArtifactView
-                path={path() ?? ""}
-                content={value()}
-                cacheKey={cacheKey()}
-                source={codeView(value().content)}
-              />
-            </Show>
-          )}
-        </Match>
-        <Match when={state()?.loading}>
-          <div class="px-6 py-4 text-text-weak">{language.t("common.loading")}…</div>
-        </Match>
-        <Match when={state()?.notFound ? state()?.name : undefined}>
-          {(name) => <div class="px-6 py-4 text-text-weak">{language.t("file.error.notFound", { name: name() })}</div>}
-        </Match>
-        <Match when={state()?.error}>{(err) => <div class="px-6 py-4 text-text-weak">{err()}</div>}</Match>
-      </Switch>
+    <div class="mt-3 relative h-full min-h-0">
+      <ScrollView class="h-full" viewportRef={scrollSync.setViewport} onScroll={scrollSync.handleScroll}>
+        <Switch>
+          <Match when={state()?.loaded}>{renderFile(contents())}</Match>
+          <Match when={state()?.loading}>
+            <div class="px-6 py-4 text-text-weak">{language.t("common.loading")}…</div>
+          </Match>
+          <Match when={state()?.notFound ? state()?.name : undefined}>
+            {(name) => (
+              <div class="px-6 py-4 text-text-weak">{language.t("file.error.notFound", { name: name() })}</div>
+            )}
+          </Match>
+          <Match when={state()?.error}>{(err) => <div class="px-6 py-4 text-text-weak">{err()}</div>}</Match>
+        </Switch>
+      </ScrollView>
    </div>
  )

@@ -1,105 +0,0 @@
-import { createEffect, onCleanup, type ParentProps } from "solid-js"
-import { createSimpleContext } from "@opencode/ui/context"
-import { MarkdownProvider, useMarkdown } from "@opencode/session-ui/context/markdown"
-import { useBrowserAttachments } from "@/session/browser/attachments"
-import type { SessionModel } from "@/session/model"
-import { useFile } from "@/workspaces/files/model"
-import { artifactKind, resolveArtifactPath } from "@/workspaces/files/artifact"
-import { encodeFilePath } from "@/workspaces/files/path"
-import { useWorkspaceLocation } from "@/workspaces/location"
-import { useServer } from "@/runtime/server/current"
-import { ServerConnection } from "@/runtime/server/registry"
-import { useSessionLayout } from "@/session/session-layout"
-import { createOpenSessionFileTab } from "@/session/helpers"
-import type { createSessionBrowser } from "@/session/browser/model"
-
-/** Routes local links in timeline markdown to the artifact opener while keeping image loading. */
-export function ArtifactMarkdownProvider(props: ParentProps) {
-  const markdown = useMarkdown()
-  const artifacts = useArtifactOpener()
-  return (
-    <MarkdownProvider readImage={markdown?.readImage} openLocalFile={(path) => artifacts.open(path)}>
-      {props.children}
-    </MarkdownProvider>
-  )
-}
-
-/**
- * Opens files the agent references as side-panel tabs, inside or outside the workspace, or as
- * a browser tab for HTML when the desktop can load the file directly.
- */
-export const { use: useArtifactOpener, provider: ArtifactOpenerProvider } = createSimpleContext({
-  name: "ArtifactOpener",
-  init: (props: { session: SessionModel; browser: ReturnType<typeof createSessionBrowser> }) => {
-    const file = useFile()
-    const server = useServer()
-    const location = useWorkspaceLocation()
-    const attachments = useBrowserAttachments()
-    const { tabs, view } = useSessionLayout()
-
-    const root = () => location().directory.replaceAll("\\", "/").replace(/\/+$/, "")
-
-    /**
-     * Turn a link into a path `useFile` can load: workspace-relative when it is under the root,
-     * otherwise absolute. Relative links resolve against `base`; ones that climb past the root
-     * become absolute too, so a `../../shared/report.pdf` still opens.
-     */
-    const resolve = (href: string, base?: string) => {
-      // Agents cite locations as path:line or path:line:col; the file is what opens.
-      const value = href.replaceAll("\\", "/").replace(/:\d+(?::\d+)?$/, "")
-      if (/^[a-z]:\//i.test(value) || value.startsWith("/")) return file.normalize(value)
-      const relative = resolveArtifactPath(base ?? "", value)
-      if (relative !== undefined) return file.normalize(relative)
-      // Climbing past the workspace root: resolve from the referencing folder's absolute location.
-      const dir = base ? `${root()}/${base.replace(/\/+$/, "")}` : root()
-      return file.normalize(resolveArtifactPath(dir, value) ?? value)
-    }
-
-    const showTab = createOpenSessionFileTab({
-      normalizeTab: (tab) => tab,
-      openTab: (tab) => tabs().open(tab),
-      pathFromTab: file.pathFromTab,
-      loadFile: () => undefined,
-      openReviewPanel: () => {
-        if (!view().reviewPanel.opened()) view().reviewPanel.open()
-      },
-      setActive: (tab) => tabs().setActive(tab),
-    })
-
-    // Inline paths are guessed from text, so confirm the file exists before a tab appears for it.
-    const openTab = (path: string) => {
-      void file.load(path).then(() => {
-        if (file.get(path)?.loaded) showTab(file.tab(path))
-      })
-    }
-
-    // The desktop's own sidecar shares this disk, and its browser pane accepts file:// URLs inside the
-    // session workspace only. Forwarded loopback servers do not qualify, matching the desktop policy.
-    const canOpenInBrowser = (path?: string) =>
-      ServerConnection.builtin(server.conn) &&
-      props.browser.available() &&
-      props.browser.attached() &&
-      (path === undefined || !file.absolute(path))
-
-    const openInBrowser = (path: string) => {
-      props.browser.command({ type: "tabs.open", url: `file://${encodeFilePath(`${root()}/${path}`)}` })
-    }
-
-    /** Open `href` as referenced from `base` (a workspace-relative directory, "" for the root). */
-    const open = (href: string, base?: string) => {
-      const path = resolve(href, base)
-      if (!path) return
-      if (artifactKind(path) === "html" && canOpenInBrowser(path)) return openInBrowser(path)
-      openTab(path)
-    }
-
-    // The agent's browser.preview tool arrives through the desktop browser pane attachment.
-    createEffect(() => {
-      const sessionID = props.session.identity.sessionID()
-      if (!sessionID) return
-      onCleanup(attachments.onPreview(server, sessionID, (path) => open(path)))
-    })
-
-    return { canOpenInBrowser, openInBrowser, open }
-  },
-})
@@ -1,9 +1,8 @@
 import { describe, expect, test } from "bun:test"
-import { Schema } from "effect"
 import { OPEN_APPS, OpenAppPreferences } from "./open-in-app"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"

-const decode = Schema.decodeUnknownSync(Persistence.withInitial(OpenAppPreferences, { app: "finder" }))
+const decode = ((input: unknown) => Codec.decodeOrThrow(Codec.withInitial(OpenAppPreferences, { app: "finder" }), input))

 describe("open app preferences", () => {
  test.each([...OPEN_APPS])("preserves the %s preference", (app) => {
@@ -18,3 +17,4 @@ describe("open app preferences", () => {
    expect(decode({})).toEqual({ app: "finder" })
  })
 })
+
@@ -5,8 +5,7 @@ import { usePlatform } from "@/runtime/platform/platform"
 import { Persist, persisted } from "@/runtime/persistence/storage"
 import { showToast } from "@/shell/notifications/toast"
 import { useServer } from "@/runtime/server/current"
-import { Schema } from "effect"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"
 import { fileManagerApp } from "@/home/projects/file-manager"
 import { openInAppParentPath } from "@/session/files/open-in-app-path"

@@ -30,8 +29,8 @@ export const OPEN_APPS = [
 export type OpenApp = (typeof OPEN_APPS)[number]
 export type OpenAppOS = "macos" | "windows" | "linux" | "unknown"

-export const OpenAppPreferences = Persistence.struct({
-  app: Schema.Literals(OPEN_APPS),
+export const OpenAppPreferences = Codec.struct({
+  app: Codec.literals(OPEN_APPS),
 })

 const appExistence = new Map<string, Promise<boolean>>()
@@ -242,3 +241,4 @@ function checkAppExists(platform: ReturnType<typeof usePlatform>, app: string) {
  appExistence.set(app, request)
  return request
 }
+
@@ -173,9 +173,7 @@ export function SessionFileBrowserTab(props: {
          <SessionFilePanelV2Empty>
            <div class="flex flex-col items-center gap-2 text-center text-text-weak">
              <Icon name="file-tree" size="large" class="mb-2" />
-              <div class="text-[13px] font-medium leading-[13px] text-text-strong">
-                {language.t("command.file.open")}
-              </div>
+              <div class="text-[13px] font-medium leading-[13px] text-text-strong">{language.t("command.file.open")}</div>
              <div class="h-5 text-13-regular leading-5">{language.t("session.files.selectToOpen")}</div>
            </div>
          </SessionFilePanelV2Empty>
@@ -1,8 +1,6 @@
 import { children, createMemo, Show } from "solid-js"
 import type { JSX } from "solid-js"
 import { useSortable } from "@dnd-kit/solid/sortable"
-import { Icon } from "@opencode/ui/icon"
-import { IconButton } from "@opencode/ui/icon-button"
 import { Keybind } from "@opencode/ui/keybind"
 import { Tooltip } from "@opencode/ui/tooltip"
 import { Tabs } from "@opencode/ui/tabs"
@@ -71,19 +69,9 @@ export function SortableTab(props: {
              placement="bottom"
              gutter={10}
            >
-              <IconButton
-                size="small"
-                variant="ghost-muted"
-                onPointerDown={(event) => {
-                  event.preventDefault()
-                  event.stopPropagation()
-                }}
-                onClick={(event) => {
-                  event.preventDefault()
-                  event.stopPropagation()
-                  props.onTabClose(props.tab)
-                }}
-                icon={<Icon name="xmark-small" />}
+              <Tabs.CloseButton
+                class="h-5 w-5"
+                onClick={() => props.onTabClose(props.tab)}
                aria-label={language.t("common.closeTab")}
              />
            </Tooltip>
@@ -137,7 +137,6 @@ export function useSessionModel() {
      tabs: layout.tabs,
      view: layout.view,
      tabKey: layout.tabKey,
-      sessionKey: layout.sessionKey,
    },
    ownership: createSessionOwnership(layout.sessionKey),
    tabs: {
@@ -155,9 +155,6 @@ export function createSessionReview(input: {
  const count = () => diffs().length
  const hasChanges = () => count() > 0
  const ready = () => {
-    // A project without VCS never enables vcsQuery, so its status stays "pending" forever.
-    const project = input.session.project()
-    if (project && !project.vcs) return true
    if (mode() === "git" || mode() === "branch") return !vcsQuery.isPending
    return true
  }
@@ -5,17 +5,20 @@ import {
  type SessionReviewExpandMode,
 } from "@opencode/session-ui/v2/session-review-v2"
 import { createSignal } from "solid-js"
-import { Schema } from "effect"
+import { Codec } from "@/runtime/persistence/codec"
 import type { Platform } from "@/runtime/platform/platform"
 import { Persist, persisted } from "@/runtime/persistence/storage"
-import { Persistence } from "@/runtime/persistence/schema"

-const ReviewPanel = Persistence.struct({
-  sidebarOpened: Schema.Boolean,
-  sidebarWidth: Schema.Finite.check(
-    Schema.isBetween({ minimum: SESSION_REVIEW_V2_SIDEBAR_WIDTH_MIN, maximum: SESSION_REVIEW_V2_SIDEBAR_WIDTH_MAX }),
-  ),
-  expandMode: Schema.Literals(["expand", "collapse"]),
+const ReviewPanel = Codec.struct({
+  sidebarOpened: Codec.boolean,
+  sidebarWidth: Codec.make<number, number>(
+    (v) =>
+      typeof v === "number" && v >= SESSION_REVIEW_V2_SIDEBAR_WIDTH_MIN && v <= SESSION_REVIEW_V2_SIDEBAR_WIDTH_MAX
+        ? v
+        : Codec.INVALID,
+    (v) => v,
+  ),
+  expandMode: Codec.literals(["expand", "collapse"]),
 })

 export function createReviewPanelState(platform?: Platform) {
@@ -47,3 +50,4 @@ export function createReviewPanelState(platform?: Platform) {
 }

 export type ReviewPanelState = ReturnType<typeof createReviewPanelState>
+
@@ -249,7 +249,7 @@ function ReviewTitle(props: { review: SessionReviewModel }) {
 function ReviewEmpty(props: { review: SessionReviewModel; loadingClass: string }) {
  const language = useLanguage()
  const loading = () => (props.review.mode() === "git" || props.review.mode() === "branch") && !props.review.ready()
-  const noGit = () => props.review.noGit()
+  const noGit = () => props.review.mode() === "turn" && props.review.noGit()
  const text = () => {
    if (props.review.mode() === "git") return language.t("session.review.noUncommittedChanges")
    if (props.review.mode() === "branch") return language.t("session.review.noBranchChanges")
@@ -282,7 +282,7 @@ function ReviewEmpty(props: { review: SessionReviewModel; loadingClass: string }
 function ReviewPanelEmpty(props: { review: SessionReviewModel }) {
  const language = useLanguage()
  const loading = () => (props.review.mode() === "git" || props.review.mode() === "branch") && !props.review.ready()
-  const noGit = () => props.review.noGit()
+  const noGit = () => props.review.mode() === "turn" && props.review.noGit()
  return (
    <Switch>
      <Match when={loading()}>
@@ -38,7 +38,6 @@ import { SessionReviewToggle } from "./header/session-header-actions"
 import { createAnimatedPresence } from "@/runtime/animated-presence"
 import { createSessionBrowser } from "./browser/model"
 import { createTimelineCache } from "./timeline/cache"
-import { ArtifactMarkdownProvider, ArtifactOpenerProvider } from "./files/open-artifact"

 const SessionMobileFiles = lazy(async () => {
  const { SessionMobileFiles } = await import("./files/session-mobile-files")
@@ -51,26 +50,14 @@ const SessionSummaryPanel = lazy(async () => {
 })

 export function SessionScreen(props: { session: SessionModel }) {
-  // The timeline cache captures its owner when created, so link handling must be provided above it.
-  const browser = createSessionBrowser(props.session)
-  return (
-    <ArtifactOpenerProvider session={props.session} browser={browser}>
-      <ArtifactMarkdownProvider>
-        <SessionScreenContent session={props.session} browser={browser} />
-      </ArtifactMarkdownProvider>
-    </ArtifactOpenerProvider>
-  )
-}
-
-function SessionScreenContent(props: { session: SessionModel; browser: ReturnType<typeof createSessionBrowser> }) {
  const session = props.session
-  const browser = props.browser
  const server = useServer()
  const detailsProject = createMemo(() => {
    const info = session.data.info()
    return info ? projectForSession(info, server.ctx.sync.data.project) : undefined
  })
  const isDesktop = session.isDesktop
+  const browser = createSessionBrowser(session)
  const screen = createSessionScreenLayout(session)
  const timeline = createSessionTimelineInteraction(session)
  const timelineSearch = createTimelineSearchController({
@@ -2,9 +2,8 @@ import { beforeAll, describe, expect, mock, test } from "bun:test"
 import { ServerScope } from "@/runtime/server/scope"
 import { base64Encode } from "@opencode/util/encode"
 import { Persist } from "@/runtime/persistence/storage"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"
 import type { Platform } from "@/runtime/platform/platform"
-import { Schema } from "effect"

 let getWorkspaceTerminalCacheKey: typeof import("./context").getWorkspaceTerminalCacheKey
 let clearWorkspaceTerminals: typeof import("./context").clearWorkspaceTerminals
@@ -21,10 +20,10 @@ beforeAll(async () => {
  const mod = await import("./context")
  getWorkspaceTerminalCacheKey = mod.getWorkspaceTerminalCacheKey
  clearWorkspaceTerminals = mod.clearWorkspaceTerminals
-  const schema = Persistence.withInitial(mod.TerminalState, { all: [] })
-  decodeTerminalState = Schema.decodeUnknownSync(schema)
+  const schema = Codec.withInitial(mod.TerminalState, { all: [] })
+  decodeTerminalState = ((input: unknown) => Codec.decodeOrThrow(schema, input))
  roundTripTerminalState = (value) =>
-    Schema.decodeUnknownSync(schema)(Schema.encodeSync(schema)(Schema.decodeUnknownSync(schema)(value)))
+    Codec.decodeOrThrow(schema, schema.encode(Codec.decodeOrThrow(schema, value)))
 })

 describe("getWorkspaceTerminalCacheKey", () => {
@@ -141,3 +140,4 @@ describe("TerminalState", () => {
    expect(roundTripTerminalState(value)).toEqual(value)
  })
 })
+
@@ -8,18 +8,20 @@ import { base64Encode } from "@opencode/util/encode"
 import { defaultTitle, titleNumber } from "./title"
 import { Persist, persisted, removePersisted } from "@/runtime/persistence/storage"
 import { ScopedKey, ServerScope } from "@/runtime/server/scope"
-import { Persistence } from "@/runtime/persistence/schema"
-import { Schema, SchemaGetter } from "effect"
+import { Codec } from "@/runtime/persistence/codec"

-const PTY = Persistence.struct({
-  id: Schema.NonEmptyString,
-  title: Persistence.fallback(Schema.String, () => ""),
-  titleNumber: Persistence.fallback(Schema.Finite, () => 0),
-  rows: Persistence.optional(Schema.Finite),
-  cols: Persistence.optional(Schema.Finite),
-  buffer: Persistence.optional(Schema.String),
-  scrollY: Persistence.optional(Schema.Finite),
-  cursor: Persistence.optional(Schema.Finite),
+const PTY = Codec.struct({
+  id: Codec.make<string, string>(
+    (v) => (typeof v === "string" && v.length > 0 ? v : Codec.INVALID),
+    (v) => v,
+  ),
+  title: Codec.fallback(Codec.string, () => ""),
+  titleNumber: Codec.fallback(Codec.number, () => 0),
+  rows: Codec.lenientOptional(Codec.number),
+  cols: Codec.lenientOptional(Codec.number),
+  buffer: Codec.lenientOptional(Codec.string),
+  scrollY: Codec.lenientOptional(Codec.number),
+  cursor: Codec.lenientOptional(Codec.number),
 })

 export type LocalPTY = typeof PTY.Type
@@ -31,28 +33,26 @@ function numberFromTitle(title: string) {
  return titleNumber(title, MAX_TERMINAL_SESSIONS)
 }

-const State = Persistence.struct({
-  active: Persistence.optional(Schema.String),
-  all: Persistence.array(PTY),
+const State = Codec.struct({
+  active: Codec.lenientOptional(Codec.string),
+  all: Codec.lenientArray(PTY),
 })

-export const TerminalState = State.pipe(
-  Schema.decodeTo(Schema.toType(State), {
-    decode: SchemaGetter.transform((value) => {
-      const seen = new Set<string>()
-      const all = value.all.flatMap((pty) => {
-        if (seen.has(pty.id)) return []
-        seen.add(pty.id)
-        return [{ ...pty, titleNumber: pty.titleNumber > 0 ? pty.titleNumber : (numberFromTitle(pty.title) ?? 0) }]
-      })
-      return {
-        active: value.active && seen.has(value.active) ? value.active : all[0]?.id,
-        all,
-      }
-    }),
-    encode: SchemaGetter.transform((value) => value),
-  }),
-)
+export const TerminalState = Codec.transform(State, {
+  decode: (value): typeof State.Type => {
+    const seen = new Set<string>()
+    const all = value.all.flatMap((pty) => {
+      if (seen.has(pty.id)) return []
+      seen.add(pty.id)
+      return [{ ...pty, titleNumber: pty.titleNumber > 0 ? pty.titleNumber : (numberFromTitle(pty.title) ?? 0) }]
+    })
+    return {
+      active: value.active && seen.has(value.active) ? value.active : all[0]?.id,
+      all,
+    }
+  },
+  encode: (value) => value,
+})

 export function getWorkspaceTerminalCacheKey(dir: string, scope: ServerScope = ServerScope.local) {
  return ScopedKey.from(scope, dir, WORKSPACE_KEY)
@@ -458,3 +458,5 @@ export const { use: useTerminal, provider: TerminalProvider } = createSimpleCont
    }
  },
 })
+
+
@@ -1,40 +1,40 @@
-import { describe, expect, test } from "bun:test"
-import { Schema } from "effect"
-import { GoUpsellState } from "./usage-exceeded-dialogs"
-import { Persistence } from "@/runtime/persistence/schema"
-
-const decode = Schema.decodeUnknownSync(
-  Persistence.withInitial(GoUpsellState, {
-    go_upsell_last_seen_at: null,
-    go_upsell_dont_show: null,
-    go_upsell_account_rate_limit_last_seen_at: null,
-    go_upsell_account_rate_limit_dont_show: null,
-  }),
-)
-
-describe("usage exceeded preferences", () => {
-  test("defaults unseen prompts", () => {
-    expect(decode({})).toEqual({
-      go_upsell_last_seen_at: null,
-      go_upsell_dont_show: null,
-      go_upsell_account_rate_limit_last_seen_at: null,
-      go_upsell_account_rate_limit_dont_show: null,
-    })
-  })
-
-  test("preserves timestamps while recovering malformed siblings", () => {
-    expect(
-      decode({
-        go_upsell_last_seen_at: 123,
-        go_upsell_dont_show: "true",
-        go_upsell_account_rate_limit_last_seen_at: Infinity,
-        go_upsell_account_rate_limit_dont_show: 456,
-      }),
-    ).toEqual({
-      go_upsell_last_seen_at: 123,
-      go_upsell_dont_show: null,
-      go_upsell_account_rate_limit_last_seen_at: null,
-      go_upsell_account_rate_limit_dont_show: 456,
-    })
-  })
-})
+import { describe, expect, test } from "bun:test"
+import { GoUpsellState } from "./usage-exceeded-dialogs"
+import { Codec } from "@/runtime/persistence/codec"
+
+const schema = Codec.withInitial(GoUpsellState, {
+  go_upsell_last_seen_at: null,
+  go_upsell_dont_show: null,
+  go_upsell_account_rate_limit_last_seen_at: null,
+  go_upsell_account_rate_limit_dont_show: null,
+})
+const decode = (input: unknown) => Codec.decodeOrThrow(schema, input)
+
+describe("usage exceeded preferences", () => {
+  test("defaults unseen prompts", () => {
+    expect(decode({})).toEqual({
+      go_upsell_last_seen_at: null,
+      go_upsell_dont_show: null,
+      go_upsell_account_rate_limit_last_seen_at: null,
+      go_upsell_account_rate_limit_dont_show: null,
+    })
+  })
+
+  test("preserves timestamps while recovering malformed siblings", () => {
+    expect(
+      decode({
+        go_upsell_last_seen_at: 123,
+        go_upsell_dont_show: "true",
+        go_upsell_account_rate_limit_last_seen_at: Infinity,
+        go_upsell_account_rate_limit_dont_show: 456,
+      }),
+    ).toEqual({
+      go_upsell_last_seen_at: 123,
+      go_upsell_dont_show: null,
+      go_upsell_account_rate_limit_last_seen_at: null,
+      go_upsell_account_rate_limit_dont_show: 456,
+    })
+  })
+})
+
+
@@ -2,8 +2,7 @@ import { useWorkspaceLocation } from "@/workspaces/location"
 import { Persist, persisted } from "@/runtime/persistence/storage"
 import type { SessionStatus } from "@opencode/client/promise"
 import { onCleanup } from "solid-js"
-import { Schema } from "effect"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"
 import { useSessionLayout } from "./session-layout"
 import { useDialog, useI18n } from "@opencode/ui/context"
 import { DialogUsageExceeded } from "@/providers/connect/usage-exceeded"
@@ -15,11 +14,11 @@ const GO_UPSELL_ACCOUNT_RATE_LIMIT_DONT_SHOW = "go_upsell_account_rate_limit_don
 const GO_UPSELL_WINDOW = 86_400_000 // 24 hrs
 const GO_UPSELL_PROVIDERS = new Set(["opencode", "opencode-go"])

-export const GoUpsellState = Persistence.struct({
-  [GO_UPSELL_FREE_TIER_LAST_SEEN_AT]: Schema.NullOr(Schema.Finite),
-  [GO_UPSELL_FREE_TIER_DONT_SHOW]: Schema.NullOr(Schema.Finite),
-  [GO_UPSELL_ACCOUNT_RATE_LIMIT_LAST_SEEN_AT]: Schema.NullOr(Schema.Finite),
-  [GO_UPSELL_ACCOUNT_RATE_LIMIT_DONT_SHOW]: Schema.NullOr(Schema.Finite),
+export const GoUpsellState = Codec.struct({
+  [GO_UPSELL_FREE_TIER_LAST_SEEN_AT]: Codec.nullOr(Codec.number),
+  [GO_UPSELL_FREE_TIER_DONT_SHOW]: Codec.nullOr(Codec.number),
+  [GO_UPSELL_ACCOUNT_RATE_LIMIT_LAST_SEEN_AT]: Codec.nullOr(Codec.number),
+  [GO_UPSELL_ACCOUNT_RATE_LIMIT_DONT_SHOW]: Codec.nullOr(Codec.number),
 })

 function goUpsellKeys(status: SessionStatus) {
@@ -106,3 +105,4 @@ export function useUsageExceededDialogs() {
    }),
  )
 }
+
@@ -1,7 +1,6 @@
 import { describe, expect, test } from "bun:test"
-import { Schema } from "effect"
 import { timelinePresets } from "@opencode/session-ui/timeline/detail"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"
 import {
  settingsSchema,
  settingsPersistence,
@@ -13,9 +12,9 @@ import {
  terminalFontFamily,
 } from "./model"

-const schema = Persistence.withInitial(settingsPersistence, defaultSettings)
-const decode = Schema.decodeUnknownSync(schema)
-const encode = Schema.encodeSync(schema)
+const schema = Codec.withInitial(settingsPersistence, defaultSettings)
+const decode = (input: unknown) => Codec.decodeOrThrow(schema, input)
+const encode = (value: typeof settingsSchema.Type) => schema.encode(value)

 describe("settings timeline detail migration", () => {
  test("migrates saved switches and round trips the current settings", () => {
@@ -51,14 +50,14 @@ describe("settings schema", () => {
      general: { ...defaultSettings.general, timelineDetail: timelinePresets[4].value, autoSave: false },
      appearance: { ...defaultSettings.appearance, fontSize: 20 },
    }
-    const restore = Schema.decodeUnknownSync(Persistence.withInitial(settingsPersistence, initial))
+    const restore = (input: unknown) => Codec.decodeOrThrow(Codec.withInitial(settingsPersistence, initial), input)
    expect(restore({})).toEqual(initial)
    expect(restore({ general: { reasoningMode: "invalid", showReasoningSummaries: true } })).toEqual(initial)
    expect(restore({ general: { showReasoningSummaries: true } }).general.timelineDetail.thinking).toEqual({
      placement: "separate",
      details: "expanded",
    })
-    expect(() => Schema.decodeUnknownSync(settingsSchema)({})).toThrow()
+    expect(() => Codec.decodeOrThrow(settingsSchema, {})).toThrow()
  })

  test("supplies the existing defaults for an empty document", () => {
@@ -171,7 +170,7 @@ describe("settings schema", () => {

  test("does not silently repair invalid values during encoding", () => {
    expect(() =>
-      Schema.encodeUnknownSync(settingsSchema)({ ...decode({}), appearance: { fontSize: "large" } }),
+      Codec.encodeOrThrow(settingsSchema, { ...decode({}), appearance: { fontSize: "large" } } as never),
    ).toThrow()
  })
 })
@@ -203,3 +202,6 @@ describe("settings font families", () => {
    expect(terminalFontFamily(undefined)).toStartWith('"JetBrainsMono Nerd Font Mono", ')
  })
 })
+
+
+
@@ -1,10 +1,9 @@
 import { reconcile, unwrap } from "solid-js/store"
 import { createEffect, createMemo } from "solid-js"
-import { Effect, Option, Schema, SchemaGetter } from "effect"
 import { createSimpleContext } from "@opencode/ui/context"
 import { timelinePresets, type TimelineCategory, type TimelineDetail } from "@opencode/session-ui/timeline/detail"
 import { persisted } from "@/runtime/persistence/storage"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"
 import { ScopedKey, type ServerScope } from "@/runtime/server/scope"

 export type Settings = typeof settingsSchema.Type
@@ -68,20 +67,20 @@ export function terminalFontFamily(font: string | undefined) {
  return stack(font, terminalBase)
 }

-const placementSchema = Schema.Literals(["separate", "grouped", "hidden"])
-const detailsSchema = Schema.Literals(["collapsed", "expanded"])
-const activitySchema = Persistence.struct({ placement: placementSchema, details: detailsSchema })
-const placementOnlySchema = Persistence.struct({ placement: placementSchema })
+const placementSchema = Codec.literals(["separate", "grouped", "hidden"])
+const detailsSchema = Codec.literals(["collapsed", "expanded"])
+const activitySchema = Codec.struct({ placement: placementSchema, details: detailsSchema })
+const placementOnlySchema = Codec.struct({ placement: placementSchema })

-const generalSchema = Persistence.struct({
-  autoSave: Schema.Boolean,
-  releaseNotes: Schema.Boolean,
-  showFileTree: Schema.Boolean,
-  showNavigation: Schema.Boolean,
-  showSearch: Schema.Boolean,
-  showProjectIcon: Schema.Boolean,
-  showTerminal: Schema.Boolean,
-  timelineDetail: Persistence.struct({
+const generalSchema = Codec.struct({
+  autoSave: Codec.boolean,
+  releaseNotes: Codec.boolean,
+  showFileTree: Codec.boolean,
+  showNavigation: Codec.boolean,
+  showSearch: Codec.boolean,
+  showProjectIcon: Codec.boolean,
+  showTerminal: Codec.boolean,
+  timelineDetail: Codec.struct({
    shell: activitySchema,
    edit: activitySchema,
    thinking: activitySchema,
@@ -89,91 +88,90 @@ const generalSchema = Persistence.struct({
    notices: placementOnlySchema,
    tools: placementOnlySchema,
  }),
-  showCustomAgents: Schema.Boolean,
-  mobileTitlebarPosition: Schema.Literals(["top", "bottom"]),
-  mobileDiffWrap: Schema.Boolean,
-  terminalPlacement: Schema.Literals(["side", "bottom"]),
-  followUpBehavior: Schema.Literals(["queue", "steer"]),
-  experimentalBrowser: Schema.Boolean,
+  showCustomAgents: Codec.boolean,
+  mobileTitlebarPosition: Codec.literals(["top", "bottom"]),
+  mobileDiffWrap: Codec.boolean,
+  terminalPlacement: Codec.literals(["side", "bottom"]),
+  followUpBehavior: Codec.literals(["queue", "steer"]),
+  experimentalBrowser: Codec.boolean,
 })

-const appearanceSchema = Persistence.struct({
-  fontSize: Schema.Number,
-  mono: Schema.String,
-  sans: Schema.String,
-  terminal: Schema.String,
-  tabLayout: Schema.Literals(["horizontal", "vertical"]),
-  showProjectName: Schema.Boolean,
+const appearanceSchema = Codec.struct({
+  fontSize: Codec.number,
+  mono: Codec.string,
+  sans: Codec.string,
+  terminal: Codec.string,
+  tabLayout: Codec.literals(["horizontal", "vertical"]),
+  showProjectName: Codec.boolean,
 })

-const permissionsSchema = Persistence.struct({
-  autoApprove: Schema.Boolean,
+const permissionsSchema = Codec.struct({
+  autoApprove: Codec.boolean,
 })

-const workspacesSchema = Persistence.struct({
-  defaultDestination: Schema.Literals(["last-used", "local", "new"]),
-  lastUsed: Persistence.record(
-    Schema.Literals(["local", "workspace"]).pipe(Schema.catchDecoding(() => Effect.succeed(Option.none()))),
-  ),
+const workspacesSchema = Codec.struct({
+  defaultDestination: Codec.literals(["last-used", "local", "new"]),
+  lastUsed: Codec.fallback(Codec.sparseRecord(Codec.literals(["local", "workspace"])), () => ({})),
 })

-const notificationsSchema = Persistence.struct({
-  agent: Schema.Boolean,
-  permissions: Schema.Boolean,
-  errors: Schema.Boolean,
+const notificationsSchema = Codec.struct({
+  agent: Codec.boolean,
+  permissions: Codec.boolean,
+  errors: Codec.boolean,
 })

-const soundsSchema = Persistence.struct({
-  agentEnabled: Schema.Boolean,
-  agent: Schema.String,
-  permissionsEnabled: Schema.Boolean,
-  permissions: Schema.String,
-  errorsEnabled: Schema.Boolean,
-  errors: Schema.String,
+const soundsSchema = Codec.struct({
+  agentEnabled: Codec.boolean,
+  agent: Codec.string,
+  permissionsEnabled: Codec.boolean,
+  permissions: Codec.string,
+  errorsEnabled: Codec.boolean,
+  errors: Codec.string,
 })

-export const settingsSchema = Persistence.struct({
+export const settingsSchema = Codec.struct({
  general: generalSchema,
-  sessionSummary: Persistence.struct({ projectExpanded: Schema.Boolean, serverExpanded: Schema.Boolean }),
+  sessionSummary: Codec.struct({ projectExpanded: Codec.boolean, serverExpanded: Codec.boolean }),
  appearance: appearanceSchema,
-  keybinds: Persistence.record(Schema.String.pipe(Schema.catchDecoding(() => Effect.succeed(Option.none())))),
+  keybinds: Codec.fallback(Codec.sparseRecord(Codec.string), () => ({})),
  permissions: permissionsSchema,
  workspaces: workspacesSchema,
  notifications: notificationsSchema,
  sounds: soundsSchema,
 })

+const storedActivity = Codec.struct(
+  {
+    placement: Codec.lenientOptional(placementSchema),
+    details: Codec.lenientOptional(detailsSchema),
+  },
+  { preserve: true },
+)
+const storedActivityWord = Codec.literals(["expanded", "collapsed", "hidden", "visible"])
+
 function storedTimelineCategory(category: TimelineCategory) {
-  return Persistence.optional(
-    Schema.Union([
-      Schema.Struct({
-        placement: Persistence.optional(placementSchema),
-        details: Persistence.optional(detailsSchema),
-      }),
-      Schema.Literals(["expanded", "collapsed", "hidden", "visible"]),
-    ]).pipe(
-      Schema.decode({
-        decode: SchemaGetter.transform((value) => {
-          if (typeof value !== "string") return value
-          return {
-            placement:
-              value === "hidden"
-                ? "hidden"
-                : category === "subagents"
-                  ? "separate"
-                  : category === "tools"
-                    ? "grouped"
-                    : value === "expanded"
-                      ? "separate"
-                      : value === "collapsed"
-                        ? "grouped"
-                        : undefined,
-            details: value === "expanded" ? "expanded" : "collapsed",
-          }
-        }),
-        encode: SchemaGetter.passthrough(),
-      }),
-    ),
+  return Codec.lenientOptional(
+    Codec.transform(Codec.union([storedActivity, storedActivityWord]), {
+      decode: (value) => {
+        if (typeof value !== "string") return value
+        return {
+          placement:
+            value === "hidden"
+              ? ("hidden" as const)
+              : category === "subagents"
+                ? ("separate" as const)
+                : category === "tools"
+                  ? ("grouped" as const)
+                  : value === "expanded"
+                    ? ("separate" as const)
+                    : value === "collapsed"
+                      ? ("grouped" as const)
+                      : undefined,
+          details: value === "expanded" ? ("expanded" as const) : ("collapsed" as const),
+        }
+      },
+      encode: (value) => value,
+    }),
  )
 }

@@ -186,54 +184,55 @@ function legacyTimelineActivity(value: boolean | "hidden" | "compact" | "full" |
  } as const
 }

-export const settingsPersistence = Persistence.migrate(
+// An explicit but invalid value decodes to null, distinct from absent, so a legacy preference
+// cannot replace a setting the user did set.
+const explicitOrNull = <T, E>(codec: Codec.Of<T, E>) => Codec.optional(Codec.fallback(Codec.nullOr(codec), () => null))
+
+const storedTimelineDetail = Codec.struct(
+  {
+    shell: storedTimelineCategory("shell"),
+    edit: storedTimelineCategory("edit"),
+    thinking: storedTimelineCategory("thinking"),
+    subagents: storedTimelineCategory("subagents"),
+    notices: storedTimelineCategory("notices"),
+    tools: storedTimelineCategory("tools"),
+  },
+  { preserve: true },
+)
+const storedGeneral = Codec.struct(
+  {
+    timelineDetail: explicitOrNull(storedTimelineDetail),
+    reasoningMode: explicitOrNull(Codec.literals(["hidden", "compact", "full"])),
+    showReasoningSummaries: Codec.lenientOptional(Codec.boolean),
+    shellToolPartsExpanded: Codec.lenientOptional(Codec.boolean),
+    editToolPartsExpanded: Codec.lenientOptional(Codec.boolean),
+  },
+  { preserve: true },
+)
+const storedSettings = Codec.struct({ general: Codec.lenientOptional(storedGeneral) }, { preserve: true })
+
+export const settingsPersistence = Codec.migrate(
  settingsSchema,
-  Schema.Struct({
-    general: Persistence.optional(
-      Schema.Struct({
-        // Keep invalid explicit values distinct from absent values so legacy preferences cannot replace them.
-        timelineDetail: Schema.optional(
-          Schema.NullOr(
-            Schema.Struct({
-              shell: storedTimelineCategory("shell"),
-              edit: storedTimelineCategory("edit"),
-              thinking: storedTimelineCategory("thinking"),
-              subagents: storedTimelineCategory("subagents"),
-              notices: storedTimelineCategory("notices"),
-              tools: storedTimelineCategory("tools"),
-            }),
-          ),
-        ).pipe(Schema.catchDecoding(() => Effect.succeed(Option.some(null)))),
-        reasoningMode: Schema.optional(Schema.NullOr(Schema.Literals(["hidden", "compact", "full"]))).pipe(
-          Schema.catchDecoding(() => Effect.succeed(Option.some(null))),
-        ),
-        showReasoningSummaries: Persistence.optional(Schema.Boolean),
-        shellToolPartsExpanded: Persistence.optional(Schema.Boolean),
-        editToolPartsExpanded: Persistence.optional(Schema.Boolean),
-      }),
-    ),
-  }).pipe(
-    Schema.decode({
-      decode: SchemaGetter.transform((value) => {
-        const general = value.general
-        if (!general || general.timelineDetail !== undefined) return value
-        return {
-          ...value,
-          general: {
-            ...general,
-            timelineDetail: {
-              shell: legacyTimelineActivity(general.shellToolPartsExpanded),
-              edit: legacyTimelineActivity(general.editToolPartsExpanded),
-              thinking: legacyTimelineActivity(
-                general.reasoningMode === undefined ? general.showReasoningSummaries : general.reasoningMode,
-              ),
-            },
+  Codec.transform(storedSettings, {
+    decode: (value) => {
+      const general = value.general
+      if (!general || general.timelineDetail !== undefined) return value
+      return {
+        ...value,
+        general: {
+          ...general,
+          timelineDetail: {
+            shell: legacyTimelineActivity(general.shellToolPartsExpanded),
+            edit: legacyTimelineActivity(general.editToolPartsExpanded),
+            thinking: legacyTimelineActivity(
+              general.reasoningMode === undefined ? general.showReasoningSummaries : general.reasoningMode,
+            ),
          },
-        }
-      }),
-      encode: SchemaGetter.transform((value) => value),
-    }),
-  ),
+        },
+      }
+    },
+    encode: (value) => value,
+  }),
 )

 export const defaultSettings: Settings = {
@@ -5,8 +5,7 @@ import { Icon } from "@opencode/ui/icon"
 import { IconButton } from "@opencode/ui/icon-button"
 import { TextInput } from "@opencode/ui/text-input"
 import { type Component, createEffect, For, on, onCleanup, Show } from "solid-js"
-import { Schema } from "effect"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"
 import { useLanguage } from "@/runtime/i18n/language"
 import { useModels } from "@/providers/models/models"
 import { useServerSDK } from "@/runtime/server/client"
@@ -20,8 +19,8 @@ type ModelItem = ReturnType<ReturnType<typeof useModels>["list"]>[number]

 const PROVIDER_ICON_SIZE = 16

-export const ModelProvidersSchema = Schema.Struct({
-  collapsed: Persistence.record(Persistence.fallback(Schema.Boolean, () => false)),
+export const ModelProvidersSchema = Codec.struct({
+  collapsed: Codec.lenientRecord(Codec.fallback(Codec.boolean, () => false)),
 })

 export const SettingsModels: Component<{ active?: boolean; autofocus?: boolean }> = (props) => {
@@ -211,3 +210,4 @@ export const SettingsModels: Component<{ active?: boolean; autofocus?: boolean }
    </>
  )
 }
+
@@ -1102,6 +1102,10 @@
  padding-block: 20px;
 }

+.settings-server-connection .settings-servers-lead {
+  gap: 4px;
+}
+
 .settings-servers-row:not(:last-child) {
  padding-bottom: 16px;
  margin-bottom: 16px;
@@ -1,5 +1,5 @@
 import { describe, expect, test } from "bun:test"
-import { Schema } from "effect"
+import { Codec } from "@/runtime/persistence/codec"
 import {
  activeCommandRegistrations,
  addCommandRegistration,
@@ -10,12 +10,12 @@ import {
 } from "./command"

 test("command catalog persistence validates metadata and omits executable fields", () => {
-  const decode = Schema.decodeUnknownSync(CommandCatalog)
+  const decode = ((input: unknown) => Codec.decodeOrThrow(CommandCatalog, input))
  const catalog = decode({ open: { title: "Open", keybind: "mod+o", hidden: false, onSelect: "invalid" } })
  expect(catalog).toEqual({ open: { title: "Open", keybind: "mod+o", hidden: false } })
  expect(decode({})).toEqual({})
  expect(() => decode({ open: { title: 1 } })).toThrow()
-  expect(decode(Schema.encodeSync(CommandCatalog)(catalog))).toEqual(catalog)
+  expect(decode(CommandCatalog.encode(catalog))).toEqual(catalog)
 })

 const paletteOptions: CommandOption[] = [
@@ -79,3 +79,4 @@ describe("resolveKeybindOption", () => {
    expect(resolveKeybindOption([fallback, contextual], new KeyboardEvent("keydown"))).toBe(fallback)
  })
 })
+
@@ -2,8 +2,8 @@ import { createSimpleContext } from "@opencode/ui/context"
 import { useDialog } from "@opencode/ui/context/dialog"
 import { type Accessor, batch, createEffect, createMemo, onCleanup, onMount } from "solid-js"
 import { createStore, reconcile } from "solid-js/store"
-import { Schema } from "effect"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"
+
 import { makeEventListener } from "@solid-primitives/event-listener"
 import { useLanguage } from "@/runtime/i18n/language"
 import { useSettings } from "@/settings/model"
@@ -109,16 +109,16 @@ export function resolveKeybindOption(candidates: CommandOption[] | undefined, ev

 type CommandSource = "palette" | "keybind" | "slash"

-export const CommandCatalogItem = Persistence.struct({
-  title: Schema.String,
-  description: Schema.optional(Schema.String),
-  category: Schema.optional(Schema.String),
-  keybind: Schema.optional(Schema.String),
-  slash: Schema.optional(Schema.String),
-  hidden: Schema.optional(Schema.Boolean),
+export const CommandCatalogItem = Codec.struct({
+  title: Codec.string,
+  description: Codec.optional(Codec.string),
+  category: Codec.optional(Codec.string),
+  keybind: Codec.optional(Codec.string),
+  slash: Codec.optional(Codec.string),
+  hidden: Codec.optional(Codec.boolean),
 })
 export type CommandCatalogItem = typeof CommandCatalogItem.Type
-export const CommandCatalog = Schema.Record(Schema.String, Schema.mutableKey(CommandCatalogItem))
+export const CommandCatalog = Codec.record(CommandCatalogItem)
 export type CommandCatalog = typeof CommandCatalog.Type

 export type CommandRegistration = {
@@ -480,3 +480,4 @@ export const { use: useCommand, provider: CommandProvider } = createSimpleContex
    }
  },
 })
+
@@ -1,23 +1,22 @@
 import { expect, test } from "bun:test"
-import { Schema } from "effect"
 import type { ServerConnection } from "@/runtime/server/registry"
 import type { Tab } from "@/shell/tabs/tabs"
 import { NotificationStore, openNotificationSession, type Notification } from "./notification"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"

 test("notification persistence validates and salvages individual notifications", () => {
  const valid: Notification[] = [
    { type: "turn-complete", time: 123, viewed: false, session: "session-1" },
    { type: "error", time: 124, viewed: true, error: { type: "api", message: "failed", status: 500 } },
  ]
-  const decode = Schema.decodeUnknownSync(Persistence.withInitial(NotificationStore, { list: [] }))
+  const decode = ((input: unknown) => Codec.decodeOrThrow(Codec.withInitial(NotificationStore, { list: [] }), input))
  const store = decode({
    list: [valid[0], null, { type: "unknown", time: 123, viewed: false }, { ...valid[1], error: "invalid" }, valid[1]],
  })
  expect(store.list).toEqual(valid)
  expect(decode({})).toEqual({ list: [] })
  expect(decode({ list: {} })).toEqual({ list: [] })
-  expect(decode(Schema.encodeSync(NotificationStore)(store))).toEqual(store)
+  expect(decode(NotificationStore.encode(store))).toEqual(store)
 })

 test("opens notification sessions through the tab router", () => {
@@ -41,3 +40,4 @@ test("opens notification sessions through the tab router", () => {

  expect(calls).toEqual(["add:session-1", "route:session-1", "select:session-1"])
 })
+
@@ -1,6 +1,6 @@
 import { createStore, reconcile } from "solid-js/store"
-import { Schema } from "effect"
-import { SessionError } from "@opencode/schema/session-error"
+import { Codec } from "@/runtime/persistence/codec"
+import type { SessionError } from "@opencode/schema/session-error"
 import { type Accessor, batch, createEffect, createMemo, createRoot, getOwner, onCleanup } from "solid-js"
 import { createSimpleContext } from "@opencode/ui/context"
 import type { ServerSDK } from "@/runtime/server/client"
@@ -10,7 +10,7 @@ import { useLanguage } from "@/runtime/i18n/language"
 import { useSettings } from "@/settings/model"
 import { decode64 } from "@/runtime/persistence/base64"
 import { Persist, persisted } from "@/runtime/persistence/storage"
-import { Persistence } from "@/runtime/persistence/schema"
+
 import { playSoundById } from "@/shell/notifications/sound"
 import type { createNotificationCoordinator } from "@/shell/notifications/coordinator"
 import { useGlobal } from "@/runtime/server/runtime"
@@ -20,19 +20,28 @@ import { requireServerKey, sessionHref } from "@/shell/routes/session"
 import type { ServerScope } from "@/runtime/server/scope"
 import { useServer } from "@/runtime/server/current"

-const NotificationBase = {
-  directory: Schema.optional(Schema.String),
-  session: Schema.optional(Schema.String),
-  metadata: Schema.optional(Schema.Unknown),
-  time: Schema.Finite,
-  viewed: Schema.Boolean,
-}
-export const Notification = Schema.Union([
-  Persistence.struct({ ...NotificationBase, type: Schema.Literal("turn-complete") }),
-  Persistence.struct({ ...NotificationBase, type: Schema.Literal("error"), error: SessionError.Error }),
+const NotificationBase = {
+  directory: Codec.optional(Codec.string),
+  session: Codec.optional(Codec.string),
+  metadata: Codec.optional(Codec.unknown),
+  time: Codec.number,
+  viewed: Codec.boolean,
+}
+// The error payload is whatever the server reported; shape-checking it here would load the shared
+// Effect schema into the renderer's startup path for a value the server already validated.
+const StoredSessionError = Codec.make<SessionError.Error, unknown>(
+  (value) =>
+    typeof value === "object" && value !== null && "name" in value && "message" in value
+      ? (value as unknown as SessionError.Error)
+      : Codec.INVALID,
+  (value) => value,
+)
+export const Notification = Codec.union([
+  Codec.struct({ ...NotificationBase, type: Codec.literal("turn-complete") }),
+  Codec.struct({ ...NotificationBase, type: Codec.literal("error"), error: StoredSessionError }),
 ])
 export type Notification = typeof Notification.Type
-export const NotificationStore = Persistence.struct({ list: Persistence.array(Notification) })
+export const NotificationStore = Codec.struct({ list: Codec.lenientArray(Notification) })

 type NotificationIndex = {
  session: {
@@ -368,3 +377,5 @@ export const useNotification = () => {
  const server = useServer()
  return server.ctx.notification
 }
+
+
@@ -1,8 +1,7 @@
 import { describe, expect, test } from "bun:test"
 import { createRoot, createSignal } from "solid-js"
-import { Schema } from "effect"
 import { ServerConnection } from "@/runtime/server/registry"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"
 import { currentRoute, initialLayout, layoutPersistence, layoutSchema } from "./layout"
 import { createSessionKeyReader, ensureSessionKey, pruneSessionKeys } from "./helpers"

@@ -11,21 +10,21 @@ test("settings has its own layout route", () => {
 })

 describe("layout persistence", () => {
-  const schema = Persistence.withInitial(layoutPersistence, initialLayout(ServerConnection.Key.make("local")))
-  const decode = Schema.decodeUnknownSync(schema)
+  const schema = Codec.withInitial(layoutPersistence, initialLayout(ServerConnection.Key.make("local")))
+  const decode = (input: unknown) => Codec.decodeOrThrow(schema, input)

  test("uses supplied initial preferences after legacy migration", () => {
    const initial = initialLayout(ServerConnection.Key.make("remote"))
    initial.sidebar.width = 420
    initial.fileTree.width = 300
    initial.review.panelOpened = true
-    const restore = Schema.decodeUnknownSync(Persistence.withInitial(layoutPersistence, initial))
+    const restore = (input: unknown) => Codec.decodeOrThrow(Codec.withInitial(layoutPersistence, initial), input)
    expect(restore({})).toEqual(initial)
    expect(restore({ sidebar: { width: "bad" } }).sidebar.width).toBe(420)
    expect(restore({ fileTree: { width: 260 } }).fileTree.width).toBe(200)
    expect(restore({ fileTree: {} }).fileTree.width).toBe(300)
    expect(restore({ review: {}, fileTree: { opened: false } }).review.panelOpened).toBe(false)
-    expect(() => Schema.decodeUnknownSync(layoutSchema)({})).toThrow()
+    expect(() => Codec.decodeOrThrow(layoutSchema, {})).toThrow()
  })

  test("restores shipped defaults for missing and invalid fields", () => {
@@ -56,8 +55,8 @@ describe("layout persistence", () => {
    expect(value.sidebar).toEqual({ opened: false, width: 344, workspaces: {}, workspacesDefault: true })
    expect(value.review).toEqual({ diffStyle: "split", panelOpened: true })
    expect(value.fileTree).toEqual({ opened: true, width: 200, tab: "changes" })
-    expect(Schema.encodeSync(schema)(value)).toEqual(value)
-    expect(decode(Schema.encodeSync(schema)(value))).toEqual(value)
+    expect(schema.encode(value)).toEqual(value)
+    expect(decode(schema.encode(value))).toEqual(value)
    expect(decode({ fileTree: { opened: true } }).review.panelOpened).toBe(false)
  })

@@ -169,3 +168,4 @@ describe("pruneSessionKeys", () => {
    expect(drop).toEqual([])
  })
 })
+
@@ -1,5 +1,4 @@
 import { createStore, produce, reconcile } from "solid-js/store"
-import { Schema, SchemaGetter } from "effect"
 import { batch, createEffect, createMemo, onCleanup, onMount, type Accessor } from "solid-js"
 import { useLocation } from "@solidjs/router"
 import { createSimpleContext } from "@opencode/ui/context"
@@ -8,8 +7,8 @@ import { ServerConnection, useServers } from "@/runtime/server/registry"
 import { usePlatform } from "@/runtime/platform/platform"
 import type { Project } from "@/runtime/server/types"
 import { Persist, persisted, removePersisted } from "@/runtime/persistence/storage"
-import { Persistence } from "@/runtime/persistence/schema"
-import { TabStorage } from "@/shell/tabs/schema"
+import { Codec } from "@/runtime/persistence/codec"
+import { ServerKey } from "@/runtime/server/key"
 import { decode64 } from "@/runtime/persistence/base64"
 import { same } from "@/runtime/persistence/equality"
 import { createScrollPersistence, type SessionScroll } from "./scroll"
@@ -129,98 +128,110 @@ export const useCurrentRoute = () => {
  return createMemo(() => currentRoute(location.pathname, location.search))
 }

-const sessionTabsSchema = Persistence.struct({
-  all: Persistence.array(Schema.String),
-  active: Persistence.optional(Schema.String),
+const sessionTabsSchema = Codec.struct({
+  all: Codec.lenientArray(Codec.string),
+  active: Codec.lenientOptional(Codec.string),
 })
-const sessionViewSchema = Persistence.struct({
-  scroll: Persistence.record(Schema.Struct({ x: Schema.Finite, y: Schema.Finite })),
-  reviewOpen: Schema.optional(Persistence.array(Schema.String)),
-  reviewMode: Schema.optional(Schema.Literals(["git", "branch", "turn"])),
-  reviewFile: Schema.optional(Schema.String),
-  pendingMessage: Schema.optional(Schema.String),
-  pendingMessageAt: Schema.optional(Schema.Finite),
+const sessionViewSchema = Codec.struct({
+  scroll: Codec.lenientRecord(Codec.struct({ x: Codec.number, y: Codec.number })),
+  reviewOpen: Codec.optional(Codec.lenientArray(Codec.string)),
+  reviewMode: Codec.optional(Codec.literals(["git", "branch", "turn"])),
+  reviewFile: Codec.optional(Codec.string),
+  pendingMessage: Codec.optional(Codec.string),
+  pendingMessageAt: Codec.optional(Codec.number),
 })

-export const layoutSchema = Persistence.struct({
-  sidebar: Persistence.struct({
-    opened: Schema.Boolean,
-    width: Schema.Finite,
-    workspaces: Persistence.record(Schema.Boolean),
-    workspacesDefault: Schema.Boolean,
+export const layoutSchema = Codec.struct({
+  sidebar: Codec.struct({
+    opened: Codec.boolean,
+    width: Codec.number,
+    workspaces: Codec.lenientRecord(Codec.boolean),
+    workspacesDefault: Codec.boolean,
  }),
-  terminal: Persistence.struct({ height: Schema.Finite, opened: Schema.Boolean }),
-  review: Persistence.struct({
-    diffStyle: Schema.Literals(["unified", "split"]),
-    panelOpened: Schema.Boolean,
+  terminal: Codec.struct({ height: Codec.number, opened: Codec.boolean }),
+  review: Codec.struct({
+    diffStyle: Codec.literals(["unified", "split"]),
+    panelOpened: Codec.boolean,
  }),
-  fileTree: Persistence.struct({
-    opened: Schema.Boolean,
-    width: Schema.Finite,
-    tab: Schema.Literals(["changes", "all"]),
+  fileTree: Codec.struct({
+    opened: Codec.boolean,
+    width: Codec.number,
+    tab: Codec.literals(["changes", "all"]),
  }),
-  session: Persistence.struct({ width: Schema.Finite }),
-  mobileSidebar: Persistence.struct({ opened: Schema.Boolean }),
-  sessionTabs: Persistence.record(Persistence.fallback(sessionTabsSchema, () => ({ all: [] }))),
-  sessionView: Persistence.record(Persistence.fallback(sessionViewSchema, () => ({ scroll: {} }))),
-  home: Persistence.struct({
-    selection: Persistence.struct({
-      server: Schema.optional(TabStorage.ServerKey),
-      directory: Schema.optional(Schema.String),
+  session: Codec.struct({ width: Codec.number }),
+  mobileSidebar: Codec.struct({ opened: Codec.boolean }),
+  sessionTabs: Codec.lenientRecord(Codec.fallback(sessionTabsSchema, () => ({ all: [] }))),
+  sessionView: Codec.lenientRecord(Codec.fallback(sessionViewSchema, () => ({ scroll: {} }))),
+  home: Codec.struct({
+    selection: Codec.struct({
+      server: Codec.optional(ServerKey),
+      directory: Codec.optional(Codec.string),
    }),
  }),
 })

-export const layoutPersistence = Persistence.migrate(
-  layoutSchema,
-  Schema.Struct({
-    sidebar: Persistence.optional(
-      Schema.Struct({
-        workspaces: Persistence.optional(Schema.Union([Schema.Boolean, Schema.Record(Schema.String, Schema.Boolean)])),
-        workspacesDefault: Persistence.optional(Schema.Boolean),
-      }),
+// The shapes older versions stored, read before the current schema recovers field by field.
+const storedLayout = Codec.struct(
+  {
+    sidebar: Codec.lenientOptional(
+      Codec.struct(
+        {
+          workspaces: Codec.lenientOptional(Codec.union([Codec.boolean, Codec.record(Codec.boolean)])),
+          workspacesDefault: Codec.lenientOptional(Codec.boolean),
+        },
+        { preserve: true },
+      ),
    ),
-    review: Persistence.optional(Schema.Struct({ panelOpened: Persistence.optional(Schema.Boolean) })),
-    fileTree: Persistence.optional(
-      Schema.Struct({
-        opened: Persistence.optional(Schema.Boolean),
-        width: Persistence.optional(Schema.Finite),
-        tab: Persistence.optional(Schema.Literals(["changes", "all"])),
-      }),
+    review: Codec.lenientOptional(
+      Codec.struct({ panelOpened: Codec.lenientOptional(Codec.boolean) }, { preserve: true }),
+    ),
+    fileTree: Codec.lenientOptional(
+      Codec.struct(
+        {
+          opened: Codec.lenientOptional(Codec.boolean),
+          width: Codec.lenientOptional(Codec.number),
+          tab: Codec.lenientOptional(Codec.literals(["changes", "all"])),
+        },
+        { preserve: true },
+      ),
    ),
    sessionTabs: layoutSchema.fields.sessionTabs,
    sessionView: layoutSchema.fields.sessionView,
-  }).pipe(
-    Schema.decode({
-      decode: SchemaGetter.transform((value) => ({
-        ...value,
-        sidebar:
-          typeof value.sidebar?.workspaces === "boolean"
-            ? { ...value.sidebar, workspaces: {}, workspacesDefault: value.sidebar.workspaces }
-            : value.sidebar,
-        // Only an existing review section inherits the old file-tree panel flag.
-        review: value.review
-          ? { ...value.review, panelOpened: value.review.panelOpened ?? value.fileTree?.opened }
-          : value.review,
-        fileTree:
-          value.fileTree && !value.fileTree.tab
-            ? {
-                ...value.fileTree,
-                opened: true,
-                width: value.fileTree.width === 260 ? DEFAULT_FILE_TREE_WIDTH : value.fileTree.width,
-                tab: "changes" as const,
-              }
-            : value.fileTree,
-        sessionTabs: Object.fromEntries(
-          Object.entries(value.sessionTabs)
-            .filter(([key]) => SessionStateKey.is(key))
-            .map(([key, tabs]) => [key, normalizeStoredSessionTabs(key, tabs)]),
-        ),
-        sessionView: Object.fromEntries(Object.entries(value.sessionView).filter(([key]) => SessionStateKey.is(key))),
-      })),
-      encode: SchemaGetter.transform((value) => value),
+  },
+  { preserve: true },
+)
+
+export const layoutPersistence = Codec.migrate(
+  layoutSchema,
+  Codec.transform(storedLayout, {
+    decode: (value) => ({
+      ...value,
+      sidebar:
+        typeof value.sidebar?.workspaces === "boolean"
+          ? { ...value.sidebar, workspaces: {}, workspacesDefault: value.sidebar.workspaces }
+          : value.sidebar,
+      // Only an existing review section inherits the old file-tree panel flag.
+      review: value.review
+        ? { ...value.review, panelOpened: value.review.panelOpened ?? value.fileTree?.opened }
+        : value.review,
+      fileTree:
+        value.fileTree && !value.fileTree.tab
+          ? {
+              ...value.fileTree,
+              opened: true,
+              width: value.fileTree.width === 260 ? DEFAULT_FILE_TREE_WIDTH : value.fileTree.width,
+              tab: "changes" as const,
+            }
+          : value.fileTree,
+      sessionTabs: Object.fromEntries(
+        Object.entries(value.sessionTabs)
+          .filter(([key]) => SessionStateKey.is(key))
+          .map(([key, tabs]) => [key, normalizeStoredSessionTabs(key, tabs)]),
+      ),
+      sessionView: Object.fromEntries(Object.entries(value.sessionView).filter(([key]) => SessionStateKey.is(key))),
    }),
-  ),
+    encode: (value) => value,
+  }),
 )

 export function initialLayout(server?: ServerConnection.Key): typeof layoutSchema.Type {
@@ -1,63 +1,58 @@
 export * as TabStorage from "./schema"

-import { Schema, SchemaGetter } from "effect"
-import { ServerKey } from "@/runtime/server/persistence"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"
+import { ServerKey } from "@/runtime/server/key"

 export { ServerKey }

-export const Session = Persistence.struct({
-  type: Schema.Literal("session"),
+export const Session = Codec.struct({
+  type: Codec.literal("session"),
  server: ServerKey,
-  sessionId: Schema.String,
-  routeSessionId: Persistence.optional(Schema.String),
-  routeParentId: Persistence.optional(Schema.String),
+  sessionId: Codec.string,
+  routeSessionId: Codec.lenientOptional(Codec.string),
+  routeParentId: Codec.lenientOptional(Codec.string),
 })

-export const Draft = Persistence.struct({
-  type: Schema.Literal("draft"),
-  draftID: Schema.String,
+export const Draft = Codec.struct({
+  type: Codec.literal("draft"),
+  draftID: Codec.string,
  server: ServerKey,
-  directory: Schema.String,
-  worktree: Persistence.optional(Schema.String),
-  branch: Persistence.optional(Schema.String),
-  mcp: Persistence.optional(Persistence.struct({ target: Schema.String, states: Persistence.record(Schema.Boolean) })),
+  directory: Codec.string,
+  worktree: Codec.lenientOptional(Codec.string),
+  branch: Codec.lenientOptional(Codec.string),
+  mcp: Codec.lenientOptional(Codec.struct({ target: Codec.string, states: Codec.lenientRecord(Codec.boolean) })),
 })

-const SessionCodec = Session.pipe(
-  Schema.decodeTo(Schema.toType(Session), {
-    decode: SchemaGetter.transform((tab) => ({
-      type: tab.type,
-      server: tab.server,
-      sessionId: tab.sessionId,
-      ...(tab.routeSessionId && tab.routeSessionId !== tab.sessionId
-        ? { routeSessionId: tab.routeSessionId, ...(tab.routeParentId ? { routeParentId: tab.routeParentId } : {}) }
-        : {}),
-    })),
-    encode: SchemaGetter.transform((tab) => tab),
+// A stored route that only repeats the session id carries nothing; drop it and its parent.
+const SessionCodec = Codec.transform(Session, {
+  decode: (tab) => ({
+    type: tab.type,
+    server: tab.server,
+    sessionId: tab.sessionId,
+    ...(tab.routeSessionId && tab.routeSessionId !== tab.sessionId
+      ? { routeSessionId: tab.routeSessionId, ...(tab.routeParentId ? { routeParentId: tab.routeParentId } : {}) }
+      : {}),
+  }),
+  encode: (tab) => tab,
+})
+
+export const Tab = Codec.union([Session, Draft])
+export const Tabs = Codec.lenientArray(Codec.union([SessionCodec, Draft]))
+export const Recent = Codec.struct({
+  key: Codec.optional(Codec.string),
+})
+export const Info = Codec.struct({
+  title: Codec.optional(Codec.string),
+  directory: Codec.optional(Codec.string),
+})
+export const Infos = Codec.record(Info)
+export const Panes = Codec.record(
+  Codec.struct({
+    terminal: Codec.optional(Codec.boolean),
+    review: Codec.optional(Codec.boolean),
+    terminalHeight: Codec.optional(Codec.number),
+    sessionWidth: Codec.optional(Codec.number),
  }),
 )
-
-export const Tab = Schema.Union([Session, Draft])
-export const Tabs = Persistence.array(Schema.Union([SessionCodec, Draft]))
-export const Recent = Persistence.struct({
-  key: Schema.optional(Schema.String),
-})
-export const Info = Persistence.struct({
-  title: Schema.optional(Schema.String),
-  directory: Schema.optional(Schema.String),
-})
-export const Infos = Schema.Record(Schema.String, Schema.mutableKey(Info))
-export const Panes = Schema.Record(
-  Schema.String,
-  Schema.mutableKey(
-    Persistence.struct({
-      terminal: Schema.optional(Schema.Boolean),
-      review: Schema.optional(Schema.Boolean),
-      terminalHeight: Schema.optional(Schema.Finite),
-      sessionWidth: Schema.optional(Schema.Finite),
-    }),
-  ),
-)
-export const ClosedTab = Schema.Struct({ tab: SessionCodec, index: Schema.Int.check(Schema.isGreaterThanOrEqualTo(0)) })
-export const Closed = Persistence.array(ClosedTab)
+export const ClosedTab = Codec.struct({ tab: SessionCodec, index: Codec.nonNegativeInt })
+export const Closed = Codec.lenientArray(ClosedTab)
@@ -3,13 +3,12 @@ import { createRoot, getOwner, onCleanup } from "solid-js"
 import { createTabMemory } from "./memory"
 import { nextTabAfterClose, pushClosedTab, removeClosedTabs, takeClosedTab, type ClosedTab } from "./closed"
 import { findSessionTab, sessionIDHasOpenTab, tabHref, tabKey, type SessionTab, type Tab } from "./tabs"
-import { Schema } from "effect"
 import { TabStorage } from "./schema"
 import type { ServerConnection } from "@/runtime/server/registry"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"

 const server = "local\nhttp://localhost:4096" as ServerConnection.Key
-const decodeTabs = Schema.decodeUnknownSync(Persistence.withInitial(TabStorage.Tabs, []))
+const decodeTabs = ((input: unknown) => Codec.decodeOrThrow(Codec.withInitial(TabStorage.Tabs, []), input))

 function sessionTab(sessionId: string): SessionTab {
  return { type: "session", server, sessionId }
@@ -26,7 +25,7 @@ describe("tab migration", () => {
    }
    const restored = decodeTabs([legacy, draft])
    expect(restored).toEqual([legacy, draft])
-    expect(decodeTabs(Schema.encodeSync(TabStorage.Tabs)(restored))).toEqual([legacy, draft])
+    expect(decodeTabs(TabStorage.Tabs.encode(restored))).toEqual([legacy, draft])
  })

  test("drops null and malformed persisted tabs", () => {
@@ -64,13 +63,13 @@ describe("tab migration", () => {
      draft,
    ])
    expect(tabs).toEqual([sessionTab("root"), draft])
-    expect(Schema.encodeSync(TabStorage.Tabs)(tabs)).toEqual(tabs)
-    expect(decodeTabs(Schema.encodeSync(TabStorage.Tabs)(tabs))).toEqual(tabs)
+    expect(TabStorage.Tabs.encode(tabs)).toEqual(tabs)
+    expect(decodeTabs(TabStorage.Tabs.encode(tabs))).toEqual(tabs)
  })

  test("salvages valid closed session tabs", () => {
    expect(
-      Schema.decodeUnknownSync(Persistence.withInitial(TabStorage.Closed, []))([
+      ((input: unknown) => Codec.decodeOrThrow(Codec.withInitial(TabStorage.Closed, []), input))([
        { tab: sessionTab("a"), index: 1 },
        { tab: sessionTab("b"), index: -1 },
        { tab: { type: "draft", server, draftID: "d", directory: "/project" }, index: 0 },
@@ -81,16 +80,16 @@ describe("tab migration", () => {

  test("validates auxiliary tab state", () => {
    expect(
-      Schema.decodeUnknownSync(Persistence.withInitial(TabStorage.Recent, { key: undefined }))({ key: 1 }),
+      ((input: unknown) => Codec.decodeOrThrow(Codec.withInitial(TabStorage.Recent, { key: undefined }), input))({ key: 1 }),
    ).toEqual({ key: undefined })
-    expect(Schema.decodeUnknownSync(TabStorage.Infos)({})).toEqual({})
-    expect(Schema.decodeUnknownSync(TabStorage.Panes)({})).toEqual({})
-    expect(Schema.decodeUnknownSync(TabStorage.Infos)({ tab: { title: "Title", directory: "/project" } })).toEqual({
+    expect(Codec.decodeOrThrow(TabStorage.Infos, {})).toEqual({})
+    expect(Codec.decodeOrThrow(TabStorage.Panes, {})).toEqual({})
+    expect(Codec.decodeOrThrow(TabStorage.Infos, { tab: { title: "Title", directory: "/project" } })).toEqual({
      tab: { title: "Title", directory: "/project" },
    })
-    const panes = Schema.decodeUnknownSync(TabStorage.Panes)({ tab: { terminal: true, terminalHeight: 300 } })
-    expect(Schema.encodeSync(TabStorage.Panes)(panes)).toEqual({ tab: { terminal: true, terminalHeight: 300 } })
-    expect(() => Schema.decodeUnknownSync(TabStorage.Panes)({ tab: { terminal: "yes" } })).toThrow()
+    const panes = Codec.decodeOrThrow(TabStorage.Panes, { tab: { terminal: true, terminalHeight: 300 } })
+    expect(TabStorage.Panes.encode(panes)).toEqual({ tab: { terminal: true, terminalHeight: 300 } })
+    expect(() => Codec.decodeOrThrow(TabStorage.Panes, { tab: { terminal: "yes" } })).toThrow()
  })
 })

@@ -209,3 +208,5 @@ describe("closed tab stack", () => {
    expect(nextTabAfterClose([sessionTab("a")], 0, true)).toBeNull()
  })
 })
+
+
@@ -9,8 +9,7 @@
  justify-content: center;
 }

-[data-titlebar-tab],
-[data-titlebar-tab-action] {
+[data-titlebar-tab] {
  --tab-base: var(--v2-background-bg-deep);
  --tab-overlay: transparent;
  background: linear-gradient(var(--tab-overlay), var(--tab-overlay)), var(--tab-base);
@@ -69,14 +68,6 @@
  --tab-overlay: var(--v2-overlay-simple-overlay-pressed);
 }

-[data-titlebar-tab-action]:is(:hover, :focus-visible) {
-  --tab-overlay: var(--v2-overlay-simple-overlay-hover);
-}
-
-[data-titlebar-tab-action]:is(:active, [data-state="pressed"]) {
-  --tab-overlay: var(--v2-overlay-simple-overlay-pressed);
-}
-
 [data-titlebar-tab]:is(:hover, [data-state="pressed"]) [data-slot="tab-close"] {
  background: linear-gradient(var(--tab-overlay), var(--tab-overlay)), var(--tab-base);
 }
@@ -351,10 +351,9 @@ export function Titlebar(props: {
              >
                <button
                  type="button"
-                  data-titlebar-tab-action
                  data-action="vertical-tabs-home"
                  data-state={layout.route().type === "home" ? "pressed" : undefined}
-                  class="group mb-1 flex h-7 w-full shrink-0 items-center gap-1.5 rounded-[6px] ps-1.5 pe-2 text-[13px] leading-4 text-v2-text-text-faint hover:text-v2-text-text-base data-[state=pressed]:text-v2-text-text-base"
+                  class="group mb-1 flex h-7 w-full shrink-0 items-center gap-1.5 rounded-[6px] ps-1.5 pe-2 text-[13px] leading-4 text-v2-text-text-faint hover:bg-v2-background-bg-layer-02 hover:text-v2-text-text-base data-[state=pressed]:bg-v2-background-bg-layer-02 data-[state=pressed]:text-v2-text-text-base"
                  onClick={toggleHome}
                  aria-label={language.t("home.title")}
                  aria-pressed={layout.route().type === "home"}
@@ -651,9 +650,8 @@ export function Titlebar(props: {
                            {homeButton(true)}
                            <button
                              type="button"
-                              data-titlebar-tab-action
                              data-action="vertical-tabs-new-session"
-                              class="group flex h-7 w-full shrink-0 items-center gap-1.5 rounded-[6px] ps-1.5 pe-2 text-[13px] leading-4 text-v2-text-text-faint hover:text-v2-text-text-base"
+                              class="group flex h-7 w-full shrink-0 items-center gap-1.5 rounded-[6px] ps-1.5 pe-2 text-[13px] leading-4 text-v2-text-text-faint hover:bg-v2-background-bg-layer-02 hover:text-v2-text-text-base"
                              onClick={openNewTab}
                              aria-label={language.t("command.session.new")}
                            >
@@ -1,13 +1,13 @@
 import { expect, test } from "bun:test"
-import { Schema } from "effect"
 import { HighlightsStore } from "./highlights"
-import { Persistence } from "@/runtime/persistence/schema"
+import { Codec } from "@/runtime/persistence/codec"

 test("highlight persistence defaults missing or invalid versions and round-trips valid versions", () => {
-  const decode = Schema.decodeUnknownSync(Persistence.withInitial(HighlightsStore, { version: undefined }))
+  const decode = ((input: unknown) => Codec.decodeOrThrow(Codec.withInitial(HighlightsStore, { version: undefined }), input))
  expect(decode({})).toEqual({ version: undefined })
  expect(decode({ version: null })).toEqual({ version: undefined })
  const value = decode({ version: "1.2.3", legacy: true })
  expect(value).toEqual({ version: "1.2.3" })
-  expect(Schema.encodeSync(HighlightsStore)(value)).toEqual(value)
+  expect(HighlightsStore.encode(value)).toEqual(value)
 })
+
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
LukeParkerDev	d0c546c553	refactor(app): finish moving persisted stores off Effect Schema The composer, prompt history and comment stores port to plain codecs, persisted() becomes codec-only and the Effect-based Persistence helpers are removed. Session-file import keeps validating against the shared Effect schema from a lazily loaded module with static imports, so the bundler keeps only what it uses. The desktop renderer's SSH reconnect polls with a timer instead of an Effect schedule. Effect remains in the renderer's initial graph only through the shared schema package's ID helpers.	2026-09-20 16:37:03 +10:00
LukeParkerDev	6a57105b2c	refactor(app): keep the SSH contract schemas out of the renderer The Effect schemas move to servers/ssh/schema.ts, imported by the desktop main process for its RPC server; the renderer gets types only. The SSH attempt controller tracks its one in-flight request per server with a cancellation flag instead of Effect fibers, with the same settle-on-cancel behaviour.	2026-09-20 16:37:02 +10:00
LukeParkerDev	7930c5f676	refactor(app): port the model selection and terminal stores to plain codecs	2026-09-20 16:37:02 +10:00
LukeParkerDev	a440d0bced	refactor(app): port language, drafts, pairing, review panel, open-in-app and upsell stores to plain codecs Also replaces the Effect Iterable pipeline in the provider catalog with array methods.	2026-09-20 16:37:01 +10:00
LukeParkerDev	169ababd60	refactor(app): port command, notification, highlights, home, file-view and workspace-tip stores to plain codecs Session import keeps validating against the shared Effect schema through a dynamic import, so the shared schema and Effect load only when a file is imported. Persisted notification errors are checked structurally instead of through the shared schema. composer/schema.ts carries Effect twins of the file selection shapes until it is ported.	2026-09-20 16:37:00 +10:00
LukeParkerDev	10638d1d9f	refactor(app): port the settings store to plain codecs Migration shapes use preserving structs so undeclared stored fields survive, as Effect's onExcessProperty preserve did at every level; explicit-but-invalid legacy values still decode to null rather than absent; persisted() encodes through encodeOrThrow so an invalid in-memory value fails instead of being written.	2026-09-20 16:37:00 +10:00
LukeParkerDev	faa72aea3a	refactor(app): port the server, model, vcs and project stores to plain codecs Migrations keep their behaviour: URL strings and bare HTTP blocks become server objects, canonical-local project buckets move under local, invalid map entries are dropped individually. Migrated definitions now preserve stored fields the migration does not mention, as Effect's onExcessProperty preserve did. The Effect ServerKey is gone; the codec one in runtime/server/key.ts carries the same brand.	2026-09-20 16:36:59 +10:00
LukeParkerDev	211ce5e9f8	refactor(app): port the layout store to plain codecs Same shapes, defaults and migration as before (workspaces flag to map, review panel flag inherited from the file tree, legacy file-tree width), expressed with the codec module instead of Effect Schema.	2026-09-20 16:36:59 +10:00
LukeParkerDev	3858b11bf9	refactor(app): plain codecs for persisted state, starting with tabs Adds an Effect-free codec module for persisted stores with the same recovery semantics as the Persistence helpers, lets persisted() accept either a Schema or a codec while stores migrate, and ports the tab storage schemas as the first store. ServerKey keeps its brand type on both sides so ServerConnection.Key stays one type. Effect leaves the renderer's initial module graph once the remaining stores are ported.	2026-09-20 16:36:58 +10:00