docs(06-03): complete lookupChunk migration & SAFETY comments plan

- SUMMARY.md with execution results and self-check
- STATE.md updated: Phase 6 complete (3/3 plans), decisions recorded
- ROADMAP.md updated: Phase 6 marked Complete
- REQUIREMENTS.md: QUAL-03 and QUAL-04 marked complete

.planning/REQUIREMENTS.md

@@ -23,8 +23,8 @@ Requirements for the consolidation milestone. Each maps to roadmap phases.
 
 - [x] **QUAL-01**: Duplicated FTS5 JOIN pattern (5+ copies) is consolidated into a single SQLite VIEW (track_metadata or similar)
 - [x] **QUAL-02**: Event name constants are generated from Go source (backend/events/events.go) to TypeScript (frontend/src/events.ts) via codegen, wired into go generate and pre-commit hook
-- [ ] **QUAL-03**: Queue batch lookups in persistence.go use sqlc.slice() instead of fmt.Sprintf placeholder construction where feasible
+- [x] **QUAL-03**: Queue batch lookups in persistence.go use sqlc.slice() instead of fmt.Sprintf placeholder construction where feasible
-- [ ] **QUAL-04**: Intentional hand-crafted SQL exceptions (batch INSERT, dynamic IN clauses) are documented with // SAFETY: comments explaining why they bypass sqlc
+- [x] **QUAL-04**: Intentional hand-crafted SQL exceptions (batch INSERT, dynamic IN clauses) are documented with // SAFETY: comments explaining why they bypass sqlc
 
 ### Performance
 
@@ -100,8 +100,8 @@ Which phases cover which requirements. Updated during roadmap creation.
 | CORR-09 | Phase 2: Backend Correctness | Complete |
 | QUAL-01 | Phase 6: SQL Consolidation & Code Quality | Complete |
 | QUAL-02 | Phase 6: SQL Consolidation & Code Quality | Complete |
-| QUAL-03 | Phase 6: SQL Consolidation & Code Quality | Pending |
+| QUAL-03 | Phase 6: SQL Consolidation & Code Quality | Complete |
-| QUAL-04 | Phase 6: SQL Consolidation & Code Quality | Pending |
+| QUAL-04 | Phase 6: SQL Consolidation & Code Quality | Complete |
 | PERF-01 | Phase 7: Backend Performance | Pending |
 | PERF-02 | Phase 7: Backend Performance | Pending |
 | PERF-03 | Phase 7: Backend Performance | Pending |

.planning/STATE.md

@@ -2,13 +2,13 @@
 gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
-status: in-progress
+status: executing
-last_updated: "2026-03-05T00:23:19Z"
+last_updated: "2026-03-05T00:35:08.150Z"
 progress:
-  total_phases: 8
+  total_phases: 6
-  completed_phases: 5
+  completed_phases: 6
   total_plans: 11
-  completed_plans: 10
+  completed_plans: 11
 ---
 
 # YellowJacket — Consolidation Milestone State
@@ -16,26 +16,26 @@ progress:
 ## Project Reference
 
 **Core value:** The music player works reliably and feels solid — every interaction is correct, responsive, and trustworthy.
-**Current focus:** Phase 6 in progress — track_metadata VIEW + event codegen complete, 1 plan remaining (SAFETY comments).
+**Current focus:** Phase 6 complete — VIEW consolidation, event codegen, SAFETY comments all done. Ready for Phase 7.
 **Milestone:** Consolidation (correctness, performance, code quality, UX polish, test coverage)
 
 ## Current Position
 
-**Phase:** 06-sql-consolidation-code-quality (in progress)
+**Phase:** 06-sql-consolidation-code-quality (complete)
-**Plan:** 2/3 (06-01, 06-02 complete)
+**Plan:** 3/3 (all complete)
-**Status:** In progress
+**Status:** Phase complete
 
 ```
-Phase Progress: [######..] 6/8 phases — Phase 6: 2/3 plans complete
+Phase Progress: [######..] 6/8 phases — Phase 6: 3/3 plans complete ✓
 ```
 
 ## Performance Metrics
 
 | Metric | Value |
 |--------|-------|
-| Phases complete | 5/8 |
+| Phases complete | 6/8 |
-| Plans complete | 1/2 (Phase 5) |
+| Plans complete | 3/3 (Phase 6) |
-| Requirements delivered | 16/26 |
+| Requirements delivered | 18/26 |
 | Tests added | 84 |
 | Bugs fixed | 9 |
 | 01-01 duration | 11 min |
@@ -50,6 +50,7 @@ Phase Progress: [######..] 6/8 phases — Phase 6: 2/3 plans complete
 | Phase 05 P02 | 4 min | 2 tasks | 1 files |
 | Phase 06 P01 | 2 min | 2 tasks | 4 files |
 | Phase 06 P02 | 2 min | 2 tasks | 3 files |
+| Phase 06 P03 | 6 min | 2 tasks | 7 files |
 
 ## Accumulated Context
 
@@ -76,6 +77,8 @@ Phase Progress: [######..] 6/8 phases — Phase 6: 2/3 plans complete
 | Contentless FTS5 DELETE limitation | DeleteSearchIndex errors on content='' tables; production logs warning, stale entries are harmless | Phase 5 |
 | SQLite VIEW for JOIN dedup | track_metadata VIEW consolidates 5-table JOIN; migration2 keeps inline JOIN for upgrade path | Phase 6 |
 | AST-based event codegen | Iterate f.Decls directly for deterministic declaration-order output; atomic writes via temp+rename | Phase 6 |
+| sqlc.slice() for batch lookups | LookupTrackMetaByPaths uses track_metadata VIEW; chunking preserved at 900 since sqlc.slice() doesn't auto-chunk | Phase 6 |
+| SAFETY comment convention | Two-part format (why + safety assurance); cross-references from library.go/rescan.go to search.go | Phase 6 |
 
 ### TODOs
 
@@ -119,19 +122,18 @@ None currently.
 ### Last Session
 
 **Date:** 2026-03-05
-**What happened:** Executed Phase 6 Plan 02 — Go→TypeScript event codegen tool with go/ast, fixing LibraryConfigChanged gap
+**What happened:** Executed Phase 6 Plan 03 — migrated lookupChunk to sqlc-generated query, added SAFETY comments to all 12 hand-crafted SQL statements
-**Where we stopped:** Completed 06-02-PLAN.md (2 tasks, all verification passed). Phase 6 plan 2/3 done.
+**Where we stopped:** Completed 06-03-PLAN.md (2 tasks, all verification passed). Phase 6 complete (3/3 plans).
-**Next action:** `/gsd-execute-phase 06` to continue with 06-03-PLAN.md
+**Next action:** `/gsd-plan-phase 07` to plan Phase 7 (performance/startup optimization)
 
 ### Context for Next Session
 
-- Event codegen tool at backend/events/cmd/genevents/main.go
+- Phase 6 fully complete: VIEW consolidation, event codegen, SAFETY comments
-- LibraryConfigChanged gap automatically fixed by codegen
+- All hand-crafted SQL documented with // SAFETY: comments
-- `go generate ./...` completes in ~1.8s, codegen-check hook works end-to-end
+- lookupChunk now uses sqlc-generated LookupTrackMetaByPaths
-- `codegen-check` pre-commit hook no longer hangs — can use LEFTHOOK=1 for commits
+- Ready for Phase 7 performance/startup optimization
-- Phase 6: 2/3 plans complete, SAFETY comments plan remaining
 
 ---
 *State initialized: 2026-02-27*
-Last activity: 2026-03-05 - Completed 06-02: Go→TypeScript event codegen with go/ast and pre-commit hook
+Last activity: 2026-03-05 - Completed 06-03: lookupChunk sqlc migration + SAFETY comments on all hand-crafted SQL
 *Last updated: 2026-03-05*

.planning/phases/06-sql-consolidation-code-quality/06-03-SUMMARY.md

@@ -0,0 +1,107 @@
+---
+phase: 06-sql-consolidation-code-quality
+plan: 03
+subsystem: database
+tags: [sqlite, sqlc, fts5, sql-safety, code-quality]
+
+# Dependency graph
+requires:
+  - phase: 06-sql-consolidation-code-quality
+    provides: "track_metadata VIEW for sqlc query migration"
+provides:
+  - "sqlc-generated LookupTrackMetaByPaths query with sqlc.slice()"
+  - "SAFETY comments on all 12 hand-crafted SQL statements"
+affects: [07-performance-startup-optimization]
+
+# Tech tracking
+tech-stack:
+  added: []
+  patterns: ["sqlc.slice() for variable-length IN clauses", "SAFETY comment convention for hand-crafted SQL"]
+
+key-files:
+  created: []
+  modified:
+    - "backend/database/sql/queries/audio_files.sql"
+    - "backend/database/sql/sqlcgen/audio_files.sql.go"
+    - "backend/queue/persistence.go"
+    - "backend/database/search.go"
+    - "backend/library/library.go"
+    - "backend/library/rescan.go"
+
+key-decisions:
+  - "Used sqlc.slice() with track_metadata VIEW for type-safe batch lookups"
+  - "Preserved chunking at maxSQLiteVars=900 since sqlc.slice() does not auto-chunk"
+  - "Two-part SAFETY comment format: why sqlc can't handle it + what makes it safe"
+
+patterns-established:
+  - "SAFETY comment convention: // SAFETY: [reason sqlc can't handle] + [safety assurance]"
+  - "Cross-reference pattern: library.go/rescan.go SAFETY comments reference search.go canonical implementations"
+
+requirements-completed: [QUAL-03, QUAL-04]
+
+# Metrics
+duration: 6min
+completed: 2026-03-05
+---
+
+# Phase 6 Plan 3: SQL Consolidation — lookupChunk Migration & SAFETY Comments Summary
+
+**Migrated queue lookupChunk from fmt.Sprintf IN clause to sqlc-generated LookupTrackMetaByPaths query via track_metadata VIEW, and documented all 12 hand-crafted SQL statements with // SAFETY: comments**
+
+## Performance
+
+- **Duration:** 6 min
+- **Started:** 2026-03-05T00:27:52Z
+- **Completed:** 2026-03-05T00:34:10Z
+- **Tasks:** 2
+- **Files modified:** 7
+
+## Accomplishments
+- Replaced hand-crafted `fmt.Sprintf` IN clause in `lookupChunk` with sqlc-generated `LookupTrackMetaByPaths` query using `sqlc.slice()` and `track_metadata` VIEW
+- Added `// SAFETY:` comments to all 12 hand-crafted SQL statements across 4 files (7 in search.go, 3 in library.go, 1 in rescan.go, 1 in persistence.go)
+- All existing tests pass unchanged: database (15), library (13), queue (29) — all with `-race`
+- Zero hand-crafted SQL in lookupChunk; the only remaining hand-crafted SQL in queue is `insertTrackBatch` (documented with SAFETY comment)
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Migrate lookupChunk to sqlc with sqlc.slice()** - `2221a68` (feat)
+2. **Task 2: Add SAFETY comments to all hand-crafted SQL** - `7dfe003` (docs)
+
+## Files Created/Modified
+- `backend/database/sql/queries/audio_files.sql` - Added LookupTrackMetaByPaths query using track_metadata VIEW
+- `backend/database/sql/sqlcgen/audio_files.sql.go` - sqlc-generated Go code for LookupTrackMetaByPaths
+- `backend/queue/persistence.go` - lookupChunk now uses sqlc query; insertTrackBatch has SAFETY comment
+- `backend/database/search.go` - 7 SAFETY comments on all FTS5 operations
+- `backend/library/library.go` - 3 SAFETY comments on FTS5 INSERT/DELETE in commitNewAudioFile and updateAudioFileMetadata
+- `backend/library/rescan.go` - 1 SAFETY comment on FTS5 DELETE in clearAllLibraryData
+
+## Decisions Made
+- Used `sqlc.slice()` with `track_metadata` VIEW — the VIEW already provides the exact columns needed (id, file_path, title, artist_name), eliminating the need for an inline JOIN
+- Preserved `lookupTrackMetaBatch` chunking at `maxSQLiteVars` (900) because `sqlc.slice()` does NOT auto-chunk large parameter lists
+- Two-part SAFETY comment format: (1) why sqlc can't handle it, (2) what makes the query safe — makes it clear these are intentional exceptions, not oversights
+- Cross-references in library.go/rescan.go point back to canonical search.go implementations to avoid divergent documentation
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+None
+
+## User Setup Required
+None - no external service configuration required.
+
+## Next Phase Readiness
+- Phase 6 complete: all 3 plans executed (VIEW consolidation, event codegen, SAFETY comments)
+- All hand-crafted SQL documented; future maintainers can see why each exception exists
+- Ready for Phase 7 (performance/startup optimization)
+
+## Self-Check: PASSED
+
+All created/modified files exist on disk. All commit hashes verified in git log.
+
+---
+*Phase: 06-sql-consolidation-code-quality*
+*Completed: 2026-03-05*