Complete implementation of signal-aware context propagation for graceful
cancellation across all commands and storage operations.
Key changes:
1. Signal-aware contexts (bd-rtp):
- Added rootCtx/rootCancel in main.go using signal.NotifyContext()
- Set up in PersistentPreRun, cancelled in PersistentPostRun
- Daemon uses same pattern in runDaemonLoop()
- Handles SIGINT/SIGTERM for graceful shutdown
2. Context propagation (bd-yb8):
- All commands now use rootCtx instead of context.Background()
- sqlite.New() receives context for cancellable operations
- Database operations respect context cancellation
- Storage layer propagates context through all queries
3. Cancellation tests (bd-2o2):
- Added import_cancellation_test.go with comprehensive tests
- Added export cancellation test in export_test.go
- Tests verify database integrity after cancellation
- All cancellation tests passing
Fixes applied during review:
- Fixed rootCtx lifecycle (removed premature defer from PersistentPreRun)
- Fixed test context contamination (reset rootCtx in test cleanup)
- Fixed export tests missing context setup
Impact:
- Pressing Ctrl+C during import/export now cancels gracefully
- No database corruption or hanging transactions
- Clean shutdown of all operations
Tested:
- go build ./cmd/bd ✓
- go test ./cmd/bd -run TestImportCancellation ✓
- go test ./cmd/bd -run TestExportCommand ✓
- Manual Ctrl+C testing verified
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
After daemon auto-export, JSONL mtime could be newer than database mtime
due to SQLite WAL mode not updating beads.db until checkpoint. This caused
validatePreExport to incorrectly block subsequent exports with "JSONL is
newer than database" error, leading to daemon shutdown.
Solution: Call TouchDatabaseFile after all export operations to ensure
database mtime >= JSONL mtime. This prevents false positives in validation
