diff --git a/.beads/issues.jsonl b/.beads/issues.jsonl
index 93c7cb52..3c65f3f9 100644
--- a/.beads/issues.jsonl
+++ b/.beads/issues.jsonl
@@ -418,6 +418,7 @@
 {"id":"bd-cjxp","title":"Bug P0","description":"","status":"closed","priority":0,"issue_type":"bug","created_at":"2025-11-07T19:00:22.536449-08:00","updated_at":"2025-11-07T22:07:17.345535-08:00","closed_at":"2025-11-07T21:55:09.429643-08:00"}
 {"id":"bd-ckvw","title":"Add schema compatibility probe to prevent silent migration failures","description":"Issue #262 revealed a serious bug: migrations may fail silently, causing UNIQUE constraint errors later.\n\nRoot cause:\n- sqlite.New() runs migrations once on open\n- checkVersionMismatch() prints 'database will be upgraded automatically' but only updates metadata\n- If migrations fail or daemon runs older version, queries expecting new columns fail with 'no such column'\n- Import logic misinterprets this as 'not found' and tries INSERT on existing ID\n- Result: UNIQUE constraint failed: issues.id\n\nFix strategy (minimal):\n1. Add schema probe in sqlite.New() after RunMigrations\n   - SELECT all expected columns from all tables with LIMIT 0\n   - If fails, retry RunMigrations and probe again\n   - If still fails, return fatal error with clear message\n2. Fix checkVersionMismatch to not claim 'will upgrade' unless probe passes\n3. Only update bd_version after successful migration probe\n4. Add schema verification before import operations\n5. Map 'no such column' errors to clear actionable message\n\nRelated: #262","status":"closed","priority":0,"issue_type":"bug","created_at":"2025-11-08T13:23:26.934246-08:00","updated_at":"2025-11-08T13:53:29.219542-08:00","closed_at":"2025-11-08T13:53:29.219542-08:00"}
 {"id":"bd-csvy","title":"Add tests for merge driver auto-config in bd init","description":"Add comprehensive tests for the merge driver auto-configuration functionality in `bd init`.\n\n**Test cases needed:**\n- Auto-install in quiet mode\n- Skip with --skip-merge-driver flag\n- Detect already-installed merge driver\n- Append to existing .gitattributes\n- Interactive prompt behavior (if feasible)\n\n**File:** `cmd/bd/init_test.go`","status":"closed","priority":2,"issue_type":"task","created_at":"2025-11-05T19:27:04.133078-08:00","updated_at":"2025-11-06T18:19:16.233673-08:00","closed_at":"2025-11-06T15:56:36.014814-08:00","dependencies":[{"issue_id":"bd-csvy","depends_on_id":"bd-32nm","type":"discovered-from","created_at":"2025-11-05T19:27:04.134299-08:00","created_by":"daemon"}]}
+{"id":"bd-cyec","title":"GH#510: Document sync-branch worktree behavior","description":"","status":"closed","priority":2,"issue_type":"task","created_at":"2025-12-14T17:29:29.044479-08:00","updated_at":"2025-12-14T17:29:34.12129-08:00","closed_at":"2025-12-14T17:29:34.12129-08:00"}
 {"id":"bd-d19a","title":"Fix import failure on missing parent issues","description":"Import process fails atomically when JSONL references deleted parent issues. Implement hybrid solution: topological sorting + parent resurrection to handle deleted parents gracefully while maintaining referential integrity. See docs/import-bug-analysis-bd-3xq.md for full analysis.","status":"closed","priority":0,"issue_type":"epic","created_at":"2025-11-04T12:31:30.994759-08:00","updated_at":"2025-11-05T00:08:42.814239-08:00","closed_at":"2025-11-05T00:08:42.814243-08:00"}
 {"id":"bd-d33c","title":"Separate process/lock/PID concerns into process.go","description":"Create internal/daemonrunner/process.go with: acquireDaemonLock, PID file read/write, stopDaemon, isDaemonRunning, getPIDFilePath, socket path helpers, version check.","status":"closed","priority":1,"issue_type":"task","created_at":"2025-11-01T11:41:14.871122-07:00","updated_at":"2025-11-01T23:43:55.66159-07:00","closed_at":"2025-11-01T23:43:55.66159-07:00"}
 {"id":"bd-d355a07d","title":"Import validation falsely reports data loss on collision resolution","description":"## Problem\n\nPost-import validation reports 'data loss detected!' when import count reduces due to legitimate collision resolution.\n\n## Example\n\n```\nImport complete: 1 created, 8 updated, 142 unchanged, 19 skipped, 1 issues remapped\nPost-import validation failed: import reduced issue count: 165 → 164 (data loss detected!)\n```\n\nThis was actually successful collision resolution (bd-70419816 duplicated → remapped to-70419816), not data loss.\n\n## Impact\n\n- False alarms waste investigation time\n- Undermines confidence in import validation\n- Confuses users/agents about sync health\n\n## Solution\n\nImprove validation to distinguish:\n- Collision-resolution merges (expected count reduction)\n- Actual data loss (unexpected disappearance)\n\nTrack remapped issue count and adjust expected post-import count accordingly.","status":"closed","priority":2,"issue_type":"bug","created_at":"2025-10-29T23:15:00.815227-07:00","updated_at":"2025-12-13T18:00:31.065053-08:00","closed_at":"2025-11-08T00:33:04.659308-08:00"}