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- Fix LFO→Filter cutoff: add scaling Gain nodes so LFO (-1..1) maps to meaningful Hz modulation (±cutoff value). Same fix for LFO→Osc freq. Mod scale updates dynamically when user changes the base param value. - Visual modulation indicator: knobs receiving LFO/modulation show a pulsing dashed ring animation (spin + pulse) around the knob arc - Persist hint usage per level: using a hint permanently caps that level at 2 stars — survives reload/restart. No more cheating by restarting! - Hint state stored in separate localStorage key (synthquest-hints) - Admin reset also clears hint history Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>