All 5 WebSocket endpoints (expand, spec, assistant, terminal, project)
were closing the connection before calling accept() when validation
failed. Starlette converts pre-accept close into an HTTP 403, giving
clients no meaningful error information.
Server changes:
- Move websocket.accept() before all validation checks in every WS handler
- Send JSON error message before closing so clients get actionable errors
- Fix validate_project_name usage (raises HTTPException, not returns bool)
- ConnectionManager.connect() no longer calls accept() (caller's job)
Client changes:
- All 3 WS hooks (useWebSocket, useExpandChat, useSpecChat) skip
reconnection on 4xxx close codes (application errors won't self-resolve)
- Gate expand button, keyboard shortcut, and modal on hasSpec
- Add hasSpec to useEffect dependency array to prevent stale closure
- Update keyboard shortcuts help text for E key context
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add language specifier to fenced code block in expand-project.md
- Remove detailed exception strings from WebSocket responses (security)
- Make WebSocket "start" message idempotent to avoid session reset
- Fix race condition in bulk feature creation with row-level lock
- Add validation for starting_priority (must be >= 1)
- Fix _query_claude to handle multiple feature blocks and deduplicate
- Add FileReader error handling in ExpandProjectChat
- Fix disconnect() to clear pending reconnect timeout
- Enable sandbox mode and validate CLI path in expand_chat_session
- Clean up temporary settings file on session close
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Adds the ability to add multiple features to an existing project through
a natural language conversation with Claude, similar to how initial spec
creation works.
Features:
- New "Expand" button in header (keyboard shortcut: E)
- Full-screen chat interface for describing new features
- Claude reads existing app_spec.txt for context
- Features created directly in database after user approval
- Bulk feature creation endpoint for batch operations
New files:
- .claude/commands/expand-project.md - Claude skill for expansion
- server/services/expand_chat_session.py - Chat session service
- server/routers/expand_project.py - WebSocket endpoint
- ui/src/components/ExpandProjectChat.tsx - Chat UI
- ui/src/components/ExpandProjectModal.tsx - Modal wrapper
- ui/src/hooks/useExpandChat.ts - WebSocket hook
Modified:
- Added POST /bulk endpoint to features router
- Added FeatureBulkCreate schemas
- Integrated Expand button and modal in App.tsx
Co-Authored-By: Claude <noreply@anthropic.com>
