Add support for displaying gt events (from ~/gt/.events.jsonl) in the
gt feed TUI, including witness patrol activity:
- Add event symbols for patrol events (patrol_started, patrol_complete,
polecat_checked, polecat_nudged, escalation_sent), merge events, and
general gt events (sling, hook, handoff, mail, spawn, etc.)
- Create GtEventsSource that parses .events.jsonl format with proper
extraction of rig/role from actor paths and human-readable message
generation from event payloads
- Create CombinedSource that merges multiple event sources (bd activity
and gt events) using fan-in pattern
- Update feed command to use combined source for TUI mode
- Add appropriate styling for new event types (nudges/escalations in
red, patrol complete in green, etc.)
Example gt feed output now shows:
09:45 ✓ witness: All polecats healthy
09:44 ⚡ witness: nudged nux (idle 10m)
09:40 🎯 mayor: slung gt-rbncw to furiosa
(gt-rbncw)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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