dialogue-ambient-dip.md: full Godot implementation spec for dialogue (-7dB ambient) and confrontation (-11dB ambient + LP 800Hz, -5dB world SFX) audio dips with tween code and edge case handling. synth_ui_sounds .py: FM/noise/impulse synthesis for insert-tech UI sounds (cursor hover, weapon aim, monologue chimes). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>