Introduces a materialized cache table to store blocked issue IDs,
replacing the expensive recursive CTE computation that was causing
~752ms query times on 10K databases (bd-5qim).
The cache is maintained via invalidation on dependency and status
changes, reducing GetReadyWork from O(n²) recursive traversal to
O(1) cache lookup.
Technical details:
- New blocked_issues_cache table with single issue_id column
- ON DELETE CASCADE ensures automatic cleanup
- Migration populates cache using existing recursive CTE logic
- rebuildBlockedCache() fully rebuilds cache on invalidation
- execer interface allows both *sql.DB and *sql.Tx usage
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Created migrations/ subdirectory with 14 individual migration files
- Reduced migrations.go from 680 to 98 lines (orchestration only)
- Updated test imports to use migrations package
- Updated MULTI_REPO_HYDRATION.md documentation
- All tests passing
- Add repo_mtimes table to track JSONL file modification times
- Implement HydrateFromMultiRepo() with mtime-based skip optimization
- Support tilde expansion for repo paths in config
- Add source_repo column via migration (not in base schema)
- Fix schema to allow migration on existing databases
- Comprehensive test coverage for hydration logic
- Resurrect missing parent issues bd-cb64c226 and bd-cbed9619
Implementation:
- internal/storage/sqlite/multirepo.go - Core hydration logic
- internal/storage/sqlite/multirepo_test.go - Test coverage
- docs/MULTI_REPO_HYDRATION.md - Documentation
Schema changes:
- source_repo column added via migration only (not base schema)
- repo_mtimes table for mtime caching
- All SELECT queries updated to include source_repo
Database recovery:
- Restored from 17 to 285 issues
- Created placeholder parents for orphaned hierarchical children
Amp-Thread-ID: https://ampcode.com/threads/T-faa1339a-14b2-426c-8e18-aa8be6f5cde6
Co-authored-by: Amp <amp@ampcode.com>
- Add migration for UNIQUE index on external_ref column (bd-897a)
- Add validation for duplicate external_ref in batch imports (bd-7315)
- Add query planner test to verify index usage (bd-f9a1)
- Add concurrent import tests for external_ref (bd-3f6a)
The migration detects existing duplicates and fails gracefully.
Batch imports now reject duplicates with clear error messages.
Tests verify the index is actually used by SQLite query planner.
Amp-Thread-ID: https://ampcode.com/threads/T-45ca66ed-3912-46c4-963c-caa7724a9a2f
Co-authored-by: Amp <amp@ampcode.com>
