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piker/ai/prompt-io/opencode/20260729T041723Z_ce33deb6_p...

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Prompt

Diagnose why the chart still showed a zero first OHLCV row after the epoch-zero timestamp repair, causing auto-y-ranging to include zero.

Response summary

Audited live 60s and 1s NativeDB files and found one exact 60s first-slot sentinel at epoch 60 with a completely zero OHLCV payload. Added narrowly scoped read and merge repair, matching incoming validation, sentinel-only startup handling, canonical reindexing, and explicit audit classification. Preserved modern all-zero bars as unclassified evidence rather than assuming all zero-priced instruments are corrupt.

Files changed

  • piker/storage/nativedb.py - first-slot sentinel repair and validation
  • piker/storage/_audit.py - sentinel classification and zero-row evidence
  • tests/test_storage_nativedb.py - hydration, merge, and boundary regressions
  • tests/test_storage_audit.py - sentinel and modern-zero audit regressions
  • ai/prompt-io/opencode/20260729T041723Z_ce33deb6_prompt_io.raw.md
    • unedited response record
  • ai/prompt-io/opencode/20260729T041723Z_ce33deb6_prompt_io.md
    • provenance metadata and response summary

Human edits

None - generated changes have not been edited by the human.