feat: event store snapshot architecture (ADR S0040 Phase 1)#102
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feat: event store snapshot architecture (ADR S0040 Phase 1)#102
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- Extend EventStore interface with LoadAfterSeqNr and LatestSeqNr - Add SnapshotStore port and FileSnapshotStore implementation - Add SeqCounter (SQLite WAL) for globally monotonic SeqNr allocation - Add SeqAllocator port for future use - Integrate SeqCounter into SessionRecorder (optional SetSeqCounter) - Implement one-time cutover logic (sentinel snapshot + system.cutover event) - Add SpanEventStore instrumentation for new methods - Add EventSystemCutover event type Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- LoadAfterSeqNr: add SeqNr > 0 guard to exclude pre-cutover aggregate-local SeqNr - Cutover: clarify null snapshot body is Phase 1 sentinel (Phase 2 adds real state) - Improve LoadAfterSeqNr doc with pre-cutover SeqNr overlap warning Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
LoadAfterSeqNrandLatestSeqNrfor snapshot-based recoverySnapshotStoreport +FileSnapshotStoreimplementation (atomic write pattern)SeqCounter(SQLite WAL) for globally monotonic SeqNr allocationSeqAllocatorport for future useSetSeqCounter)Test plan
go test ./... -count=1 -shortPASS🤖 Generated with Claude Code