Sending text via the web composer to an archived/inactive session
silently dropped on the floor: the hub returned 409 but the web client
swallowed the failure with a console.error in the resolveSessionId catch
branch, leaving the operator with no signal and no recovery path.
Hub: add a machine-readable `code: 'session_inactive'` to the 409 body
so the web client can discriminate this branch without string-matching
the i18n-able human message.
Web (router.tsx, useSendMessage.ts, HappyComposer.tsx):
- useSendMessage now fires `onError` on resolveSessionId rejection,
not just on POST /messages failure -- closes the visibility hole
when the inactive session has no resume target or resume itself
fails.
- The route classifies the thrown error: a 409 + session_inactive
code or a synthetic ApiError thrown from resolveSessionId attaches
a Reopen action to the existing inline composer-error affordance.
Plain 4xx / 5xx / network keep the legacy text-restore UX
untouched.
- Reopen calls api.reopenSession (the same path as SessionList's
Reopen menu item), invalidates the session queries, and navigates
to the resumed sessionId. Per the orchestrator brief's friction
pass on #917 the affordance does NOT auto-replay the send; the
operator re-clicks Send on the restored composer text.
Tests:
- hub messages.test.ts: 409 carries `code: 'session_inactive'`.
- useSendMessage.test.tsx: ApiError(409, session_inactive) from POST
flows through onError; resolveSessionId rejection flows through
onError keyed by the original sessionId; 500 keeps the legacy
fallback path with no code attached.
AI disclosure: implemented by an AI agent (Claude Opus 4.7) acting on
operator instructions; tests pass locally (bun typecheck + bun run
test for hub and web).
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./settings- Application settings.
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
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.