Replace tmux session scanning with proper rig discovery:
- Primary: Load rigs from mayor/rigs.json via rig manager
- Fallback: Scan town directory for .beads or config.json
- Handle rigs without running witnesses gracefully
Closes gt-oc2
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Fix ~50 errcheck warnings across the codebase:
- Add explicit `_ =` for intentionally ignored error returns (cleanup,
best-effort operations, etc.)
- Use `defer func() { _ = ... }()` pattern for defer statements
- Handle tmux SetEnvironment, KillSession, SendKeysRaw returns
- Handle mail router.Send returns
- Handle os.RemoveAll, os.Rename in cleanup paths
- Handle rand.Read returns for ID generation
- Handle fmt.Fprint* returns when writing to io.Writer
- Fix for-select with single case to use for-range
- Handle cobra MarkFlagRequired returns
All tests pass. Code compiles without errors.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Implements per-agent backoff tracking to reduce noise for busy agents:
- AgentBackoff type tracks interval, miss count, and last activity
- BackoffManager manages state across all agents
- Geometric backoff strategy (1.5x factor, 10min cap)
- Integrates with keepalive to skip pokes when agents are fresh
- Resets backoff immediately when activity detected
Closes gt-8bx
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Implements the town daemon (gt-99m) that handles:
- Periodic heartbeat to poke Mayor and Witnesses
- Lifecycle request processing (cycle, restart, shutdown)
- Session management for agent restarts
Commands:
- gt daemon start: Start daemon in background
- gt daemon stop: Stop running daemon
- gt daemon status: Show daemon status and stats
- gt daemon logs: View daemon log file
The daemon is a "dumb scheduler" - all intelligence remains in agents.
It simply pokes them on schedule and executes lifecycle requests.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
