Bug: if VCA gain was 0 when CV was connected, cvMod (initialized with
p.gain=0) would multiply envelope by 0 = silence forever.
Fix: cvMod always has gain=1 (full pass-through). The envelope (0-1)
controls the VCA amplitude directly. When CV is connected, base gain
is zeroed so only the envelope signal is heard. When disconnected,
base gain is restored from the param value.
Before: cvMod.gain = p.gain → envelope × 0 = 0 (broken)
After: cvMod.gain = 1 → envelope × 1 = envelope (correct)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
02db83b896