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git diff -- plans/opencode/gap-checker-backfiller-repair.md
Generated a phased implementation plan for continuing piker’s gap checker and history backfiller repairs. The plan separates data correctness from annotation performance and orders work by dependency: deterministic tests, canonical frame/gap normalization, structured backfill completion, non-destructive atomic NativeDB writes, exact null repair, provider/venue classification, annotation vectorization, and crash qualification.
The plan is grounded in current code paths, local issue caches #62, #71, and #75, and the existing 1,285-gap profiling handoff. It records confirmed present defects, design invariants, per-phase acceptance gates, test commands, commit boundaries, and explicitly deferred UX and provider work.