42 lines
1.5 KiB
Markdown
42 lines
1.5 KiB
Markdown
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---
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model: gpt-5.6-sol
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service: opencode
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session: fsp-backfill-sync-live-volume
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timestamp: 2026-09-03T23:25:25Z
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git_ref: fadab3d2
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scope: code
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substantive: true
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raw_file: 20260903T232525Z_fadab3d2_prompt_io.raw.md
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---
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## Prompt
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Diagnose and fix MNQ's same-index volume repaint, missing post-closure
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volume curve, stale zoomed-out downsample path, and repeated
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`No yrange provided for dolla_vlm` warnings using live SHM evidence.
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## Response summary
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Declared source sample periods on `Flume` so FSP cascades cannot mistake
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a market-closure timestamp gap for their regular cadence. Clamped
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negative provider volume at sampling and volume-FSP boundaries, honored
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M4 renderer cache invalidation, and skipped unchanged realtime FSP
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redraws while retaining forced history repairs.
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## Files changed
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- `piker/data/flows.py` - declare RT/history sample periods.
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- `piker/data/_sampling.py` - prevent negative sampled volume.
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- `piker/fsp/_engine.py` - subscribe using the declared RT period.
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- `piker/fsp/_volume.py` - clamp volume history and trade sizes.
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- `piker/ui/_dataviz.py` - honor renderer cache resets.
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- `piker/ui/_fsp.py` - skip identical realtime FSP redraws.
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- `tests/test_fsp_sync.py` - cover the observed regressions.
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## Human edits
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The human identified each visual failure, supplied the exact console
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warning, confirmed that the later-started `flow_rates` cascade behaved
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correctly, requested declared cadence instead of timestamp inference,
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performed chart restarts, and live-validated the final behavior.
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