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6 Commits

Author SHA1 Message Date
alex 6c8cfe9157 feat: responsive web terminal with auto-reconnect, heartbeat, and local echo 
Implements a resilient, responsive web terminal that survives network blips,
provides instant typing feedback, and restores scrollback on reconnect.

Backend changes:
- Add heartbeat tracking (15s ping interval, 60s idle timeout)
- Add message batching (16ms flush window) for efficient I/O
- Add termios echo detection and set_echo_state control messages
- Add graceful session_ended notification before close
- Add ping/pong protocol support

Frontend changes:
- Rewrite TerminalComponent with status bar, connection indicator,
  session-ended overlay, reconnect banner, and ResizeObserver
- Add useTerminalConnection hook with:
  - Exponential backoff auto-reconnect (1s → 30s max, 10 attempts)
  - Heartbeat/ping-pong with latency tracking
  - Local echo for printable ASCII with server deduplication
  - Resize debounce (200ms) + throttle (500ms)
  - Scrollback serialization via xterm-addon-serialize
  - Ctrl+Shift+R manual reconnect shortcut
- Add WebSocket protocol types and encoding utilities
- Add xterm-addon-serialize dependency

Tests:
- 16 backend unit tests (TerminalSession + TerminalManager)
- 13 frontend hook tests (connection lifecycle, reconnect, resize,
  scrollback, callbacks)

Quality gates:
- Frontend typecheck: clean
- Frontend lint: clean
- Frontend tests: 48 passed
- Backend unit tests: 101 passed
- Backend ruff: clean

SDD artifacts: openspec/changes/responsive-terminal/
 2026-05-27 21:27:49 +02:00
Fusion 56b54e269a fix(terminal): create PTY for proper interactive shell 
- Use Python pty module to create pseudo-terminal
- Pass slave fd to docker exec for real TTY allocation
- Fixes ioctl errors and job control warnings
- Supports terminal resizing via TIOCSWINSZ

Quality gates: local testing
 2026-05-21 12:03:36 +02:00
Fusion 6e597b9e21 fix(terminal): allocate proper TTY for docker exec 
- Change docker exec -i to -it for real TTY allocation
- Fixes ioctl errors and job control warnings in terminal
- Gives bash a proper terminal for interactive use

Quality gates: manually tested
 2026-05-21 11:39:14 +02:00
Fusion a2c3d6877e fix(terminal): remove TTY allocation, use interactive bash with TERM env var 2026-05-21 11:21:51 +02:00
Fusion 76266fc3d0 fix(terminal): allocate pseudo-TTY for interactive docker exec session 2026-05-21 11:09:08 +02:00
Fusion e344e961d6 feat: implement web terminal for tool instances 
- Add TerminalSession backend service for docker exec subprocess management
- Add TerminalManager for WebSocket session lifecycle management
- Create WebSocket endpoint at /ws/tool-instances/{id}/terminal
- Add session cookie authentication and instance ownership verification
- Install xterm.js with fit and web-links addons
- Create TerminalComponent with xterm.js integration
- Create TerminalPage with full-screen terminal view
- Add terminal route at /instances/:id/terminal
- Add terminal button to InstanceList for running instances
- Add terminal and arrow-left icons to icon registry
- Add comprehensive terminal CSS styles (dark theme, responsive)

Quality gates: typecheck ✓, lint ✓, build ✓, Python syntax ✓
 2026-05-19 21:11:29 +02:00