- Add SubagentWatcher service that discovers and tails Claude Code's subagent
transcript files (~/.claude/projects/.../subagents/agent-*.jsonl)
- Track tool calls, progress events, and messages in real-time via file watching
- Add SSE events for subagent:discovered, subagent:tool_call, subagent:progress,
subagent:message, subagent:completed
- Add REST API endpoints: GET /api/subagents, /api/subagents/:id,
/api/subagents/:id/transcript
- Add subagent panel in Monitor section showing active agents and their activity
- Add floating draggable windows that auto-open for each active agent
- Add standalone CLI tool: scripts/watch-subagents.ts for terminal monitoring
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
