---
model: gpt-5.6-sol
provider: openai
service: opencode
timestamp: 2026-07-21T21:50:55Z
git_ref: c6ec3d41
diff_cmd: git diff HEAD~1..HEAD
---

> `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.