Stage 2 (Agent C). Real merge of godrum/a-engine + godrum/b-beat-panel onto
godrum/integrate (zero conflicts; extracted app script passes node --check),
then the seven review findings:
R1 kick tail — stop the osc at t+0.01+8τ (τ computed once); no click at max decay.
R2 seed — clear closed hats on steps 14/15 so the seeded open hat rings into the downbeat.
R3 stale paint — paintGrid now drives paintExpr (lit-bars track the grid); groove-slider drags relight the preset buttons.
R4 groove — add the fourth "velocity" slider (groove.velo), matching the arranger's grooves tab.
R5 moods — applyMood's storm + clearGrooves loops skip drum.* lanes; a mood never silences the beat.
R6 kick-duck — duck param on the kick (default .35); pad+drone reroute through a new duckG; fireKick dips it and lets it flood back ("the kick parts the sea").
R7 mix — closed/open hat internal peak scalars 0.70/0.80 → 0.35/0.45 so the hats sit at/just under the ambient perc.density shimmer (§0.6 contract defaults unchanged).
Verified end-to-end on a static serve via offline-render measurements plus a live
analyser tap on the real graph: first-press wake with ♪ off, every voice audible,
choke (95% tail cut), duck −3.07 dB → recover, chance/ratchet, R5 through a storm,
kit+beat persistence incl. duck, zero-mode round-trip, arranger↔beat shared groove,
mutual-exclusion, zero console errors. Temporary verify hooks removed (grep-clean).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
monsterrobotparty
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