Honest low-confidence grid display (Stage 10) - #44
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Three layers make an untrustworthy grid visibly untrustworthy: - Library: when BOTH rigid-adoption gates decline a fit (phase_lock below 0.3 AND tracked-beat corroboration below 0.6), the estimators genuinely disagree - positive evidence the surviving tracked grid's phase is suspect on quantized material - so refine_grid_rigid caps the reported confidence at 0.5. The raw metric scores internal consistency, not ground truth: Somebody To Love measured beat F 0.31 with confidence 0.845. Verified on corpus: somebody 0.772 -> 0.500, adopted tracks unchanged. Ramps/live material unaffected (declined by the sanity floor, or adopted). - Desktop: GridMarks carries low_confidence (threshold 0.6, documented against the measured 0.79-0.94 healthy-corpus floor); beat/downbeat ticks dim to 40% in the zoomed and overview painters and the counter row shows a 'grid: low confidence' hint. - Annotation: somebody-to-love marked phase_indecisive with the 2026-08-07 measurements recorded. Also: desktop/Cargo.toml gains an empty [workspace] table so desktop cargo commands work in git worktrees (cargo otherwise walks past the worktree root and claims the outer repo's workspace; behavior in the main checkout is unchanged). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Closes the last code item in ROADMAP Stage 10's non-adopter work: an untrustworthy grid is now visibly untrustworthy.
The problem the naive version couldn't solve
Grid
confidencescores internal consistency, not ground truth: Somebody To Love's wandering DP grid measures confidence 0.845 with beat F 0.31 — squarely inside the healthy corpus cluster (0.79–0.94). No display threshold on raw confidence can dim it without dimming correct grids.Three layers
rigid_grid.rs): when both adoption gates decline a fit — phase_lock < 0.3 AND tracked-beat corroboration < 0.6 — the two independent estimators genuinely disagree, which is positive evidence the surviving tracked grid's phase is suspect on quantized material.refine_grid_rigidnow caps reported confidence at 0.5. Verified on corpus: somebody 0.772 → 0.500; hot_stuff/cold_heart (adopted) unchanged; ramps/live material unaffected (sanity-floor declines and adoptions don't touch the cap). Unit-tested via the drifting-tracker control.GridMarks.low_confidence(threshold 0.6, documented against the measured 0.79 healthy-corpus floor); beat/downbeat ticks dim to 40% in both painters; the counter row shows a small "grid: low confidence" hint.phase_indecisivewith the 2026-08-07 measurements recorded in its meta.Also:
desktop/Cargo.tomlgains an empty[workspace]table so desktop cargo commands work inside git worktrees (cargo otherwise walks past the worktree root and claims the outer repo's workspace; main-checkout behavior unchanged).Root + desktop checks green (fmt, clippy
-D warnings, tests, docs); 2 new desktop unit tests.Visual check for review: load Somebody To Love on this branch — its markers should draw dimmed with the hint, while Hot Stuff draws full-strength.
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