- AudioFeedback.start_crowd_bed() builds a 4 s looping AudioStreamWAV at runtime
(one-pole filtered noise plus a 68/103 Hz drone, seeded) and set_crowd_level()
maps crowd mood 0..1 to -34..-12 dB, so the street gets louder as it gets
agitated or panics. The bed starts with the shift and stops at shift end.
- play_radio_open()/play_radio_close() push short filtered-noise bursts; wired to
opening the radio panel, submitting a report, cancelling, and closing the panel.
- Still asset-free and headless-safe: with a dummy audio server the calls no-op.
_free_player() returns null before _ready and callers handle it.
Tests/docs
- Headless suite 127 -> 134 (test_audio_feedback.gd).
- New smoke_audio.gd: bed playing, level follows mood events, radio crackles once
per open/close, bed stops at shift end. Verified windowed (real audio server).
- README, TODO section moved to DONE, MEMORY. Version 0.2.8.
