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* fix(cursor): exclusive agent spawn lease for list-models vs ACP (#1520) Add a proper-lockfile spawn lease beside agent-acp-active so model probes and ACP transport acquire mutual exclusion atomically before spawning agent children, closing the post-#1518 check-then-act overlap window. Fixes #1520 Co-authored-by: Cursor <cursoragent@cursor.com> * chore(web): fix markdown-a test HappyChatContext mock for typecheck Adds showSessionSummaryInChat to chatContext() so CI typecheck passes on the PR branch (pre-existing main breakage unrelated to #1520). Co-authored-by: Cursor <cursoragent@cursor.com> * Revert "chore(web): fix markdown-a test HappyChatContext mock for typecheck" This reverts commit 4973f321a31fda772e8990ea6cda20517ca906aa. * fix(cursor): scope spawn lease to agent spawn window only (#1520) Hold agent-cli.spawn only around spawn('agent') in AcpStdioTransport, not for the full ACP session. Restores N concurrent cursor sessions per host; list-models probe lease unchanged. Co-authored-by: Cursor <cursoragent@cursor.com> * fix(cursor): tighten spawn lease lifecycle for babysit (#1520) Acquire spawn lease before ACP marker publish; unregister on spawn failure. Hold list-models probe lease until child exit on timeout. Add missing showSessionSummaryInChat to markdown-a test mock (unblocks CI typecheck). Co-authored-by: Cursor <cursoragent@cursor.com> * fix(cursor): re-check ACP marker after spawn lease acquire (#1520) Close check-then-act window where ACP could publish its marker between the inactive guard read and list-models spawn. Add regression test. Co-authored-by: Cursor <cursoragent@cursor.com> * test(cursor): fix ACP-after-acquire mock call order (#1520) Co-authored-by: Cursor <cursoragent@cursor.com> * fix(cursor): async spawn lease + force-kill probe timeout (#1520) Add acquireAgentCliSpawnLease (setTimeout yields) for ACP create path; AcpStdioTransport.create() async factory. Probe timeout uses killProcessByChildProcess(force) while holding lease until child exit. Addresses Bugbot Majors: session-lifetime mutex (fe07b708d), probe lease release, post-acquire re-check (137baa779), sync loop starvation, timeout escalation. Co-authored-by: Cursor <cursoragent@cursor.com> * fix(acp): coalesce concurrent initialize() transport spawns (#1520) Await shared bootstrapTransport promise so overlapping initialize calls do not spawn duplicate ACP children while create() is in flight. Co-authored-by: Cursor <cursoragent@cursor.com> --------- Co-authored-by: Cursor <cursoragent@cursor.com>
hapi-web
React Mini App / PWA for monitoring and controlling hapi sessions.
What it does
- Session list with status, pending approvals, todos, and summaries.
- Chat view with streaming updates and message sending.
- Permission approval and denial workflows.
- Permission mode and model selection.
- Machine list and remote session spawn.
- File browser and git status/diff views.
- PWA install prompt and offline banner.
Runtime behavior
- When opened inside Telegram, auth uses Telegram WebApp init data.
- When opened in a normal browser, you can log in with
CLI_API_TOKEN:<namespace>(orCLI_API_TOKENfor the default namespace). - The login screen includes a top-right hub picker; if unset, the app uses the same origin it was loaded from.
- Live updates come from the hub via SSE.
Routes
See src/router.tsx for route definitions.
/- Redirect to /sessions./sessions- Session list./sessions/$sessionId- Chat interface./sessions/new- Create new session./sessions/$sessionId/files- File browser with git status./sessions/$sessionId/file- File viewer with diff support./sessions/$sessionId/terminal- Terminal interface./share- Share-target landing (Web Share Target POST →?id=, or native/share#url=&text=&title=)./settings- Settings category hub (mobile) and responsive master-detail shell./settings/general- Language preferences./settings/display- Appearance, typography, colors, and session list preferences./settings/chat- Message input, tool card, and conversation color preferences./settings/voice- Everyday voice assistant preferences./settings/voice/voices- Full-page voice picker./settings/voice/advanced- Voice persona, tuning, and diagnostics./settings/usage- Cache-aware token usage dashboard for the hub owner./settings/about- Application links and version information.
Features
Session list (src/components/SessionList.tsx)
- Active/inactive status indicator.
- Session title from name, summary, or path.
- Todo progress display.
- Pending permission request count.
- Agent flavor label (claude/codex/gemini).
- Model mode display.
Chat interface (src/components/SessionChat.tsx)
- Message thread with infinite scroll.
- Composer for sending messages.
- Permission mode toggle (default/acceptEdits/auto/bypassPermissions/plan).
- Model selection (default/sonnet/sonnet[1m]/opus/opus[1m]).
- Session abort and mode switch controls.
- Context size display.
- Per-session scratchlist (
src/components/AssistantChat/ScratchlistPanel.tsx)- Workbench panel for held notes/drafts; distinct from the queue.
- Add/delete/reorder entries; promote to composer (copy) or queue (send).
- Persists across reloads via
localStoragekeyed per session. - Keyboard shortcut: Ctrl/Cmd+Shift+S to focus the add-input.
File browser (src/routes/sessions/files.tsx)
- Git status view (staged/unstaged files).
- File search with ripgrep.
- Navigate to file viewer.
File viewer (src/routes/sessions/file.tsx)
- File content display with syntax highlighting.
- Staged/unstaged diff view.
Terminal (src/routes/sessions/terminal.tsx)
- Remote terminal via xterm.js
- Real-time via Socket.IO
- Resize handling
Voice assistant
- ElevenLabs integration (@elevenlabs/react)
- Real-time voice control
- Standard and realtime composer dictation with provider capability selection
New session (src/components/NewSession/)
Modular session creation:
- Machine selector
- Directory input with recent paths
- Agent type selector
- Model selector
- Permission mode toggle (YOLO mode)
Authentication
See src/hooks/useAuth.ts and src/hooks/useAuthSource.ts.
- Telegram Mini App: Uses initData from WebApp SDK.
- Browser: Uses CLI_API_TOKEN from login prompt.
- JWT tokens with auto-refresh.
Data fetching
See src/hooks/queries/ for query hooks and src/hooks/mutations/ for mutations.
- Sessions, messages, machines via TanStack Query.
- Git status and file operations.
- Optimistic updates for message sending.
Real-time updates
See src/hooks/useSSE.ts.
- SSE connection to
/api/events. - Session/message/machine update events.
- Automatic cache invalidation on events.
Stack
React 19 + Vite + TanStack Router/Query + Tailwind + @assistant-ui/react + xterm.js + @elevenlabs/react + socket.io-client + workbox + shiki.
Source structure
src/router.tsx- Route definitions.src/components/- UI components.src/hooks/- Data fetching and state hooks.src/api/client.ts- API client.src/types/api.ts- Type definitions.
Development
From the repo root:
bun install
bun run dev:web
If testing in Telegram, set:
HAPI_PUBLIC_URLto the public HTTPS URL of the dev server.CORS_ORIGINSto include the dev server origin.
Tests
Unit tests run under vitest + jsdom:
bun run test:web
End-to-end browser tests for the scratchlist component (real Chromium, real
inert focus blocking, real localStorage round-trips) live at the repo root
under e2e/:
bun run test:e2e # headless
bun run test:e2e:ui # Playwright UI mode (debug)
The spec drives a Vite-served fixture page (web/e2e-fixtures/scratchlist-fixture.html)
that mounts the production ScratchlistPanel in isolation, so no hub /
auth / socket setup is required.
Build
bun run build:web
The built assets land in web/dist and are served by hapi-hub. The single executable can embed these assets.
Standalone hosting
You can host web/dist on a static host (GitHub Pages, Cloudflare Pages) and point it at any hapi hub:
- Build the web app. If your static host uses a subpath, set the Vite base:
bun run build:web -- --base /<repo>/
- Deploy
web/distto your static host. - Set hub CORS to allow the static origin (
HAPI_PUBLIC_URLorCORS_ORIGINS). - Open the static site, click the top-right Hub button on the login screen, and enter the hapi hub origin.
Clear the hub override in the same dialog to return to same-origin behavior.