diff --git a/.beads/issues.jsonl b/.beads/issues.jsonl
index 2b695e8a..a401f71d 100644
--- a/.beads/issues.jsonl
+++ b/.beads/issues.jsonl
@@ -41,6 +41,7 @@
 {"id":"gt-2sw","title":"Plugin surface for daemon lifecycle hooks","description":"Allow rigs to customize daemon behavior via hooks/plugins.\n\n## Hook Points\n\n- on_heartbeat: Called during daemon heartbeat cycle\n- on_worker_idle: Called when worker goes idle\n- on_worker_stuck: Called when stuck detection triggers\n- on_lifecycle_request: Called before processing lifecycle\n\n## Configuration\n\n```\n\u003crig\u003e/config/daemon-hooks.json\n{\n  \"on_heartbeat\": \"./hooks/check-ci-status.sh\",\n  \"on_worker_idle\": \"./hooks/maybe-assign-work.sh\",\n  \"idle_threshold\": \"5m\",\n  \"custom_signals\": [\n    {\"name\": \"ci_status\", \"command\": \"./hooks/get-ci.sh\"}\n  ]\n}\n```\n\n## Signal Contribution\n\nHooks can return signals that feed into decision engine:\n- SKIP_POKE: Don't poke this agent\n- FORCE_POKE: Override backoff, poke now\n- CUSTOM_DATA: Extra context for logging\n\n## Use Cases\n\n- Check CI status before interrupting test runs\n- Auto-assign work when worker becomes idle\n- Custom stuck detection for specific workflows","status":"open","priority":3,"issue_type":"feature","created_at":"2025-12-18T14:19:34.702624-08:00","updated_at":"2025-12-18T14:19:34.702624-08:00","dependencies":[{"issue_id":"gt-2sw","depends_on_id":"gt-99m","type":"blocks","created_at":"2025-12-18T14:19:47.035848-08:00","created_by":"daemon"}]}
 {"id":"gt-2tp","title":"init.go: Replace custom contains() with strings.Contains","status":"closed","priority":3,"issue_type":"bug","created_at":"2025-12-16T13:55:11.326407-08:00","updated_at":"2025-12-16T13:56:39.089057-08:00","closed_at":"2025-12-16T13:56:39.089057-08:00"}
 {"id":"gt-2ux","title":"gt uninstall: Clean removal of Gas Town harness","description":"Add 'gt uninstall' command to cleanly remove a Gas Town installation.\n\nShould:\n- Remove harness directory structure\n- Optionally preserve rigs/data with --keep-data flag\n- Warn about running sessions\n- Clean up any global config references","status":"closed","priority":1,"issue_type":"task","created_at":"2025-12-17T21:47:16.175246-08:00","updated_at":"2025-12-17T22:31:12.816428-08:00","closed_at":"2025-12-17T22:31:12.816428-08:00","dependencies":[{"issue_id":"gt-2ux","depends_on_id":"gt-hw6","type":"blocks","created_at":"2025-12-17T22:22:47.419553-08:00","created_by":"daemon"}]}
+{"id":"gt-2xiv","title":"gt mail inbox doesn't find crew worker mail - identity mismatch","description":"## Problem\n\nCrew workers don't see their handoff messages when running `gt mail inbox` from their working directory.\n\n## Root Cause\n\ngt derives identity from cwd path, but crew workers have a different path structure:\n- **cwd**: `/Users/stevey/gt/beads/crew/dave`\n- **gt derives**: `beads/crew/dave` (wrong)\n- **should be**: `beads/dave` (crew workers use `rig/name` format)\n\nMessages sent to `beads/dave` don't show up because gt is looking for `beads/crew/dave`.\n\n## Workaround\n\nUse explicit identity flag:\n```bash\ngt mail inbox --identity \"beads/dave\"\n```\n\n## Fix\n\nIdentity detection in gt should handle crew/ subdirectory:\n- Path `\u003crig\u003e/crew/\u003cname\u003e` should derive identity as `\u003crig\u003e/\u003cname\u003e`\n- This matches how polecats work: `\u003crig\u003e/polecats/\u003cname\u003e` → `\u003crig\u003e/\u003cname\u003e`\n\n## Affected\n\nAll crew workers in all rigs.","status":"open","priority":1,"issue_type":"bug","created_at":"2025-12-22T00:34:02.290132-08:00","updated_at":"2025-12-22T00:34:02.290132-08:00"}
 {"id":"gt-2xsh","title":"Silent error handling with _ = err patterns","description":"Multiple locations intentionally ignore errors with comments like 'Ignore errors'. While some are valid (best-effort operations), others should be audited:\n\n- witness/manager.go:542 - Ignores cmd.Run() error\n- refinery/manager.go:411, 438, 509 - Ignores loadState and git pull errors\n- swarm/manager.go:47 - Ignores getGitHead error\n- polecat/manager.go:69, 284 - Ignores pool.Load and DeleteBranch errors\n- swarm/integration.go:101, 137 - Ignores git pull and push errors\n\nEach should be evaluated: log it, handle it, or confirm ignoring is intentional.","status":"closed","priority":3,"issue_type":"task","created_at":"2025-12-21T21:35:11.239439-08:00","updated_at":"2025-12-21T22:19:09.113803-08:00","closed_at":"2025-12-21T22:19:09.113803-08:00","close_reason":"Audited all 10 '_ = err' patterns. All are intentional best-effort operations with appropriate comments:\n- Process signals: expected to fail if process already terminated\n- Git pull/push in recovery paths: best-effort, failures handled downstream\n- Message ack: will naturally retry on next cycle if fails\n- Pool loading: intentional for new rig initialization\n\nThese patterns are acceptable for launch. Consider adding structured logging for observability in future iterations."}
 {"id":"gt-30o","title":"Error handling improvements: retry logic and recovery hints","description":"Improve error handling across GGT codebase.\n\n## Issues Found\n\n### 1. Silent Failures in Refinery\nmanager.go ProcessMR():\n- git pull errors ignored\n- Continues processing even on partial failures\n\n### 2. Missing Beads CLI\nMany operations silently continue if `bd` not found:\n```go\n// Current\ntasks, err := m.loadTasksFromBeads(epicID)\nif err != nil {\n    // Non-fatal - swarm can start without tasks\n}\n\n// Better\nif err != nil {\n    return nil, fmt.Errorf(\"beads required: %w\", err)\n}\n```\n\n### 3. No Retry Logic\nNetwork/lock errors should retry:\n```go\nfunc withRetry(attempts int, delay time.Duration, fn func() error) error {\n    for i := 0; i \u003c attempts; i++ {\n        if err := fn(); err == nil {\n            return nil\n        }\n        time.Sleep(delay)\n    }\n    return fmt.Errorf(\"failed after %d attempts\", attempts)\n}\n```\n\n### 4. Recovery Hints\nError messages should include fix suggestions:\n```go\n// Current\nreturn fmt.Errorf(\"polecat not found\")\n\n// Better\nreturn fmt.Errorf(\"polecat '%s' not found. Use 'gt polecat list' to see available polecats\", name)\n```\n\n## Domain Error Types\n```go\ntype SessionError struct {\n    Op      string\n    Polecat string\n    Err     error\n}\n\nfunc (e *SessionError) Error() string {\n    return fmt.Sprintf(\"session %s for %s: %v\", e.Op, e.Polecat, e.Err)\n}\n```\n\n## Files to Review\n- internal/refinery/manager.go\n- internal/swarm/manager.go\n- internal/session/manager.go\n- All cmd/*.go files\n\n## Acceptance Criteria\n- [ ] No silent error swallowing\n- [ ] Retry logic for transient failures\n- [ ] Helpful error messages with hints\n- [ ] Consistent error types per domain","status":"open","priority":2,"issue_type":"task","created_at":"2025-12-16T14:48:48.183421-08:00","updated_at":"2025-12-16T16:06:52.751546-08:00"}
 {"id":"gt-346","title":"Update harness beads redirect for GGT","description":"Change ~/ai/.beads/redirect from mayor/rigs/gastown/.beads to gastown/mayor/.beads for the GGT directory structure","status":"closed","priority":1,"issue_type":"task","created_at":"2025-12-17T16:42:41.650571-08:00","updated_at":"2025-12-19T12:00:39.272977-08:00","closed_at":"2025-12-19T12:00:39.272977-08:00","dependencies":[{"issue_id":"gt-346","depends_on_id":"gt-l1o","type":"blocks","created_at":"2025-12-17T16:42:54.495061-08:00","created_by":"daemon"},{"issue_id":"gt-346","depends_on_id":"gt-cr9","type":"blocks","created_at":"2025-12-17T17:15:59.04264-08:00","created_by":"daemon"}]}
@@ -562,6 +563,7 @@
 {"id":"gt-xicq","title":"Work on ga-lue: Implement Witness as Claude agent. Conver...","description":"Work on ga-lue: Implement Witness as Claude agent. Convert from shell script to Claude agent that monitors polecats, nudges idle ones, handles escalations. When done, submit MR (not PR) to integration branch for Refinery.","status":"closed","priority":2,"issue_type":"task","created_at":"2025-12-19T22:58:08.310674-08:00","updated_at":"2025-12-19T23:24:36.692209-08:00","closed_at":"2025-12-19T23:24:36.692209-08:00"}
 {"id":"gt-xkbm","title":"Merge: gt-g44u.1","description":"branch: polecat/Ace\ntarget: main\nsource_issue: gt-g44u.1\nrig: gastown","status":"closed","priority":0,"issue_type":"merge-request","created_at":"2025-12-19T16:04:14.367493-08:00","updated_at":"2025-12-19T17:35:38.210747-08:00","closed_at":"2025-12-19T17:35:38.210747-08:00"}
 {"id":"gt-xnql","title":"Define constants for magic strings","description":"Several magic strings are hardcoded throughout the codebase:\n- \"mayor\" appears in 20+ places as a path component\n- \"main\" branch name appears in 20+ places\n- \"beads-sync\" branch name in multiple files\n- \"rigs.json\" filename\n\nThese should be constants in a central location for maintainability.","status":"closed","priority":3,"issue_type":"task","created_at":"2025-12-21T21:34:46.620322-08:00","updated_at":"2025-12-21T22:13:07.292513-08:00","closed_at":"2025-12-21T22:13:07.292513-08:00","close_reason":"Created internal/constants/constants.go with centralized definitions for:\n- Directory names (mayor, polecats, crew, etc.)\n- File names (rigs.json, town.json, state.json)\n- Git branches (main, beads-sync)\n- Session names (gt-mayor, gt-deacon)\n- Agent roles\n\nUpdated key files (rig_helpers.go, daemon.go, status.go) to use the new constants package. Full migration of all usages (~100 files) can be done incrementally."}
+{"id":"gt-xp2s","title":"P0: Multiple agents can claim same worker identity","description":"Multiple Claude Code sessions running simultaneously all think they are 'dave' on beads/crew/dave. No detection or prevention of identity collision. This breaks the single-agent-per-worker assumption.\n\n## Fix Implemented\n\n1. **Lock Package** (`internal/lock/lock.go`):\n   - PID-based lockfile at `\u003cworker\u003e/.gastown/agent.lock`\n   - Contains PID, timestamp, session ID, hostname\n   - Stale lock detection (checks if owning PID is dead)\n\n2. **Prevention in gt prime**:\n   - Workers (crew/polecat) acquire identity lock before loading context\n   - If another live process holds the lock, prime fails with clear error\n   - Shows lock holder details and resolution steps\n\n3. **Detection with gt agents**:\n   - `gt agents check` - scans for collisions and stale locks\n   - `gt agents fix` - cleans stale locks\n   - JSON output available for patrol tooling\n\n4. **Correction in gt doctor**:\n   - New `identity-collision` check\n   - `gt doctor --fix` cleans stale locks","status":"closed","priority":0,"issue_type":"bug","created_at":"2025-12-21T23:55:56.649577-08:00","updated_at":"2025-12-22T00:05:07.309612-08:00","closed_at":"2025-12-22T00:05:07.309612-08:00","close_reason":"Implemented lock mechanism with prevention (gt prime), detection (gt agents check), and correction (gt doctor/agents fix)"}
 {"id":"gt-xpq","title":"Add gt crew rename command","status":"closed","priority":2,"issue_type":"task","created_at":"2025-12-18T19:45:32.599846-08:00","updated_at":"2025-12-18T19:46:17.780981-08:00","closed_at":"2025-12-18T19:46:17.780981-08:00"}
 {"id":"gt-xqdk","title":"Add molecule to update local go binary on push to main","description":"When pushing to main branch, automatically rebuild and install the gt binary on the local machine so changes are immediately available.","status":"open","priority":2,"issue_type":"task","created_at":"2025-12-19T15:37:40.542228-08:00","updated_at":"2025-12-19T15:37:40.542228-08:00"}
 {"id":"gt-xw7b","title":"Add --fart as easter egg alias for bd mol bond","description":"Add a hidden alias for the bond command:\n\n```bash\nbd mol fart mol-polecat-work --wisp\n# equivalent to:\nbd mol bond mol-polecat-work --wisp\n```\n\n## Context\nThe fart joke: instantiating a proto can produce either:\n- A Mol (solid/substantial output)\n- A Wisp (gas/ephemeral output)\n\n## Implementation\n- Add 'fart' as an alias in the mol subcommand\n- No documentation needed (easter egg)\n- Maybe a fun message: 'Bonding molecule...' or similar\n\nLow priority, just for fun.","status":"open","priority":4,"issue_type":"task","created_at":"2025-12-21T16:33:18.822868-08:00","updated_at":"2025-12-21T17:20:42.83232-08:00"}