The metadata key 'last_import_hash' was misleading because it's updated on
both import AND export. Renamed to 'jsonl_content_hash' which more accurately
describes its purpose - tracking the content hash of the JSONL file.
Added migration support: read operations try new key first, then fall back
to old key for backwards compatibility with existing databases.
Files modified:
- cmd/bd/integrity.go: Update key name with migration support
- cmd/bd/import.go: Update key name
- cmd/bd/sync.go: Update key name
- cmd/bd/autoflush.go: Update key name with migration support
- cmd/bd/daemon_sync.go: Update key name
- cmd/bd/daemon_event_loop.go: Update key name with migration support
- internal/autoimport/autoimport.go: Update key name with migration support
- Updated all related tests
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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