Legacy events stored before compact format (v6 migration) may have IDs
that start with byte 0x01. The v6 migration incorrectly skipped these
events because it checked `eventData[0] == CompactFormatVersion` before
attempting to decode, causing them to never receive SerialEventId (sei)
mappings.
This fix:
1. Changes compact format detection to try sei lookup first - if the
mapping doesn't exist, fall back to legacy binary format instead
of returning an error
2. Adds v9 migration (BackfillMissingSerialEventIdMappings) that finds
legacy events with IDs starting with 0x01 that were skipped by the
v6 migration and creates their sei mappings
3. Quiets the "Key not found" logging for sei lookups since missing
mappings are now expected and handled gracefully
Files modified:
- pkg/database/fetch-events-by-serials.go: Fallback to legacy format
- pkg/database/fetch-event-by-serial.go: Fallback to legacy format
- pkg/database/export.go: Fallback to legacy format
- pkg/database/serial_cache.go: Quiet sei lookup logging
- pkg/database/migrations.go: Add v9 sei backfill migration
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
woikos
4edd4e7a44