Resizable panel:
- Drag handle on left border of copilot panel
- Pointer events for smooth resize (320px–1200px range)
SFTP MCP tools:
- sftp_list: list remote directories
- sftp_read: read remote files
- sftp_write: write remote files
- Full HTTP endpoints + bridge tool definitions
Active session context:
- mcp_get_session_context command returns last 20 lines of scrollback
- Frontend can call on tab switch to keep AI informed
Error watcher:
- Background scanner runs every 2 seconds across all sessions
- 20+ error patterns (permission denied, OOM, segfault, disk full, etc.)
- Emits mcp:error events to frontend with session ID and matched line
- Sessions auto-registered with watcher on connect
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
