PeakCode-AI · jwangkun · Jun 9, 2026 · Jun 9, 2026
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -102,12 +102,12 @@ When adding documentation, prefer clarity over comprehensiveness. A short, corre
 
 ### Prerequisites
 
-| Dependency    | Minimum Version | Notes                                    |
-|---------------|-----------------|------------------------------------------|
-| Bun           | ^1.3.9          | Package manager and runtime              |
-| Node.js       | ^24.13.1        | Also required for some tooling           |
-| Git           | 2.30+           | For version control integration          |
-| Codex CLI     | latest          | Required for Codex provider support      |
+| Dependency | Minimum Version | Notes                               |
+| ---------- | --------------- | ----------------------------------- |
+| Bun        | ^1.3.9          | Package manager and runtime         |
+| Node.js    | ^24.13.1        | Also required for some tooling      |
+| Git        | 2.30+           | For version control integration     |
+| Codex CLI  | latest          | Required for Codex provider support |
 
 The project uses **Bun** as its package manager with the `isolated` linker. Do not use `npm` or `yarn`.
 
@@ -172,15 +172,15 @@ If the UI shows no threads after connecting, the issue is likely a WebSocket aut
 
 ### Monorepo Packages
 
-| Path                  | Role                                                        |
-|-----------------------|-------------------------------------------------------------|
+| Path                  | Role                                                                                                                         |
+| --------------------- | ---------------------------------------------------------------------------------------------------------------------------- |
 | `apps/server`         | Node.js WebSocket server. Wraps Codex app-server (JSON-RPC over stdio), serves the React web app, manages provider sessions. |
-| `apps/web`            | React/Vite UI. Session UX, conversation rendering, client-side state. Connects via WebSocket. |
-| `apps/desktop`        | Electron desktop shell. Wraps the web app as a native desktop application. |
-| `apps/marketing`      | Marketing / landing page site.                              |
-| `packages/contracts`  | Effect-TS Schema definitions and TypeScript contracts. Schema-only — no runtime logic. |
-| `packages/shared`     | Runtime utilities consumed by server and web. Uses explicit subpath exports — no barrel index. |
-| `packages/effect-acp` | Effect-TS ACP (Agents, Context, Policies) integration.      |
+| `apps/web`            | React/Vite UI. Session UX, conversation rendering, client-side state. Connects via WebSocket.                                |
+| `apps/desktop`        | Electron desktop shell. Wraps the web app as a native desktop application.                                                   |
+| `apps/marketing`      | Marketing / landing page site.                                                                                               |
+| `packages/contracts`  | Effect-TS Schema definitions and TypeScript contracts. Schema-only — no runtime logic.                                       |
+| `packages/shared`     | Runtime utilities consumed by server and web. Uses explicit subpath exports — no barrel index.                               |
+| `packages/effect-acp` | Effect-TS ACP (Agents, Context, Policies) integration.                                                                       |
 
 ### Event Lifecycle
 
@@ -279,7 +279,7 @@ All code must pass `bun run lint` and `bun run fmt:check` before opening a PR.
 ### What Makes a Good PR
 
 - **Small and focused.** Prefer PRs under 200 lines. Large PRs are difficult to review and more likely to be rejected.
-- **Clear motivation.** Explain *what* changed and *why*. If the change is non-obvious, include the reasoning.
+- **Clear motivation.** Explain _what_ changed and _why_. If the change is non-obvious, include the reasoning.
 - **Tests included.** New functionality must include tests. Bug fixes must include a regression test.
 - **Quality checks pass.** Run `bun run test`, `bun run lint`, `bun run fmt:check`, and `bun run typecheck` before opening the PR.
 - **UI changes include screenshots.** Before/after images are required. Videos for animation/interaction changes.
@@ -379,4 +379,4 @@ This is recorded once per repository and does not need to be repeated for subseq
 
 ---
 
-*Thank you for helping make Peak Code better. Every thoughtful contribution — whether a bug report, a documentation fix, or a code change — moves the project forward.*
+_Thank you for helping make Peak Code better. Every thoughtful contribution — whether a bug report, a documentation fix, or a code change — moves the project forward._
diff --git a/CONTRIBUTING.zh.md b/CONTRIBUTING.zh.md
@@ -102,12 +102,12 @@
 
 ### 前置条件
 
-| 依赖         | 最低版本   | 说明                         |
-|--------------|------------|------------------------------|
-| Bun          | ^1.3.9     | 包管理器及运行时              |
-| Node.js      | ^24.13.1   | 部分工具链所需               |
-| Git          | 2.30+      | 版本控制集成                  |
-| Codex CLI    | latest     | Codex 提供方支持所需          |
+| 依赖      | 最低版本 | 说明                 |
+| --------- | -------- | -------------------- |
+| Bun       | ^1.3.9   | 包管理器及运行时     |
+| Node.js   | ^24.13.1 | 部分工具链所需       |
+| Git       | 2.30+    | 版本控制集成         |
+| Codex CLI | latest   | Codex 提供方支持所需 |
 
 本项目使用 **Bun** 作为包管理器，采用 `isolated` 链接器。请勿使用 `npm` 或 `yarn`。
 
@@ -172,15 +172,15 @@ env -u PEAKCODE_AUTH_TOKEN PEAKCODE_PORT_OFFSET=3158 \
 
 ### Monorepo 包结构
 
-| 路径                  | 职责                                                           |
-|-----------------------|----------------------------------------------------------------|
+| 路径                  | 职责                                                                                                                        |
+| --------------------- | --------------------------------------------------------------------------------------------------------------------------- |
 | `apps/server`         | Node.js WebSocket 服务器。包装 Codex app-server（通过 stdio 进行 JSON-RPC 通信），提供 React Web 应用，管理 AI 提供方会话。 |
-| `apps/web`            | React/Vite UI。会话用户体验、对话渲染、客户端状态管理。通过 WebSocket 连接。 |
-| `apps/desktop`        | Electron 桌面外壳。将 Web 应用封装为原生桌面应用。             |
-| `apps/marketing`      | 营销/落地页网站。                                                |
-| `packages/contracts`  | Effect-TS Schema 定义和 TypeScript 合约。仅包含 Schema——不含运行时逻辑。 |
-| `packages/shared`     | 被服务器和 Web 共同使用的运行时工具库。使用显式子路径导出——不使用 barrel index。 |
-| `packages/effect-acp` | Effect-TS ACP（Agents, Context, Policies）集成。              |
+| `apps/web`            | React/Vite UI。会话用户体验、对话渲染、客户端状态管理。通过 WebSocket 连接。                                                |
+| `apps/desktop`        | Electron 桌面外壳。将 Web 应用封装为原生桌面应用。                                                                          |
+| `apps/marketing`      | 营销/落地页网站。                                                                                                           |
+| `packages/contracts`  | Effect-TS Schema 定义和 TypeScript 合约。仅包含 Schema——不含运行时逻辑。                                                    |
+| `packages/shared`     | 被服务器和 Web 共同使用的运行时工具库。使用显式子路径导出——不使用 barrel index。                                            |
+| `packages/effect-acp` | Effect-TS ACP（Agents, Context, Policies）集成。                                                                            |
 
 ### 事件生命周期
 
@@ -379,4 +379,4 @@ I have read the CLA Document and I hereby sign the CLA
 
 ---
 
-*感谢您帮助 Peak Code 变得更好。每一份深思熟虑的贡献——无论是 Bug 报告、文档修复还是代码修改——都在推动项目向前发展。*
+_感谢您帮助 Peak Code 变得更好。每一份深思熟虑的贡献——无论是 Bug 报告、文档修复还是代码修改——都在推动项目向前发展。_
diff --git a/TODO.md b/TODO.md
@@ -3,7 +3,7 @@
 ## Small things
 
 - [ ] Submitting new messages should scroll to bottom
-- [ ] Only show last 10 threads for a given project
+- [x] Only show last 10 threads for a given project
 - [ ] Thread archiving
 - [ ] New projects should go on top
 - [ ] Projects should be sorted by latest thread update

diff --git a/apps/server/src/provider/Layers/ProviderHealth.ts b/apps/server/src/provider/Layers/ProviderHealth.ts
@@ -740,9 +740,7 @@ const runCommandHealthProbe = <R>(effect: Effect.Effect<CommandResult, unknown,
     Effect.timeoutOption(DEFAULT_TIMEOUT_MS),
     Effect.exit,
     Effect.map((exit) =>
-      Exit.isSuccess(exit)
-        ? Result.succeed(exit.value)
-        : Result.fail(Cause.squash(exit.cause)),
+      Exit.isSuccess(exit) ? Result.succeed(exit.value) : Result.fail(Cause.squash(exit.cause)),
     ),
   );
 
@@ -1087,9 +1085,7 @@ export const makeCheckClaudeProviderStatus = (
     const executable = nonEmptyTrimmed(binaryPath) ?? "claude";
 
     // Probe 1: `claude --version` — is the CLI reachable?
-    const versionProbe = yield* runCommandHealthProbe(
-      runClaudeCommand(["--version"], executable),
-    );
+    const versionProbe = yield* runCommandHealthProbe(runClaudeCommand(["--version"], executable));
 
     if (Result.isFailure(versionProbe)) {
       const error = versionProbe.failure;
@@ -1202,9 +1198,7 @@ export const makeCheckGeminiProviderStatus = (
     const checkedAt = new Date().toISOString();
     const executable = nonEmptyTrimmed(binaryPath) ?? "gemini";
 
-    const versionProbe = yield* runCommandHealthProbe(
-      runGeminiCommand(["--version"], executable),
-    );
+    const versionProbe = yield* runCommandHealthProbe(runGeminiCommand(["--version"], executable));
 
     if (Result.isFailure(versionProbe)) {
       const error = versionProbe.failure;
@@ -1551,9 +1545,7 @@ export const makeCheckCursorProviderStatus = (
     const checkedAt = new Date().toISOString();
     const executable = resolveCursorAgentBinaryPath(nonEmptyTrimmed(binaryPath));
 
-    const versionProbe = yield* runCommandHealthProbe(
-      runCursorCommand(["--version"], executable),
-    );
+    const versionProbe = yield* runCommandHealthProbe(runCursorCommand(["--version"], executable));
 
     if (Result.isFailure(versionProbe)) {
       const error = versionProbe.failure;

diff --git a/apps/web/src/components/BrowserPanel.tsx b/apps/web/src/components/BrowserPanel.tsx
@@ -285,9 +285,7 @@ function isBrowserPerfLoggingEnabled(): boolean {
   }
 
   try {
-    return (
-      window.localStorage.getItem("peakcode:browser-perf") === "1"
-    );
+    return window.localStorage.getItem("peakcode:browser-perf") === "1";
   } catch {
     return false;
   }

diff --git a/apps/web/src/components/Sidebar.logic.test.ts b/apps/web/src/components/Sidebar.logic.test.ts
@@ -31,6 +31,7 @@ import {
   shouldShowDebugFeatureFlagsMenu,
   shouldPrunePinnedThreads,
   shouldClearThreadSelectionOnMouseDown,
+  SIDEBAR_THREAD_PREVIEW_LIMIT,
   sortProjectsForSidebar,
   sortThreadsForSidebar,
 } from "./Sidebar.logic";
@@ -598,6 +599,10 @@ describe("resolveProjectStatusIndicator", () => {
 });
 
 describe("getVisibleThreadsForProject", () => {
+  it("keeps the collapsed project preview aligned with the ten-thread sidebar target", () => {
+    expect(SIDEBAR_THREAD_PREVIEW_LIMIT).toBe(10);
+  });
+
   it("includes the active thread even when it falls below the folded preview", () => {
     const threads = Array.from({ length: 8 }, (_, index) =>
       makeThread({

diff --git a/apps/web/src/components/Sidebar.logic.ts b/apps/web/src/components/Sidebar.logic.ts
@@ -21,6 +21,7 @@ export {
 } from "../lib/projectCreateRecovery";
 
 export const THREAD_SELECTION_SAFE_SELECTOR = "[data-thread-item], [data-thread-selection-safe]";
+export const SIDEBAR_THREAD_PREVIEW_LIMIT = 10;
 export const SIDEBAR_THREAD_PREWARM_LIMIT = 10;
 export const DEBUG_FEATURE_FLAGS_MENU_STORAGE_KEY = "peakcode:show-debug-feature-flags-menu";
 export type SidebarNewThreadEnvMode = "local" | "worktree";