[codeonym]

Summary

Demos now include click and typing sounds, plus eight explicit action cues through nonblocking sfx(name). The approved DAEDAL CC0 palette mixes beneath narration with smooth ducking; --no-sfx mutes all effects without changing timing or visuals.

actions + explicit cues
  → calibrated, held event timeline
  → deterministic sound placement and narration ducking
  → normalized voiced mix / quiet effects-only mix
  → final MP4, preserving every video frame

Explicit cues: success, error, notification, open, close, toggle, back and select. Selected assets, licences, source hashes and processing recipes are bundled for offline use.

Closes #8

Evidence

• Before: cue API and mute-flag tests failed; interaction sounds were absent.
  After: 80 unit tests and all 30 end-to-end tests pass; type checking, build and staged diff checks pass.
• The complete suite includes two fresh narrated recordings, original speech hashes, timing comparison, all-eight-cue muted recording, offline synthesis, captions and decoded-media checks.
• Packed-package execution passes with networking disabled, including missing-asset errors and muting without assets. Identical voiced inputs produce identical decoded final-audio hashes in the final image.
• User approved the revised narrated preview and sound selection. Final-image 12.5-second render: 375 frames, -16.56 LUFS / -2.08 dBTP; 22.34 seconds, approximately 799 MiB peak RSS.
• Standards and Spec reviews have no remaining findings. Earlier overloaded recordings were rejected by the unchanged guard; the final complete run passed.

Merge Danger

Door: two-way

Code and assets can be reverted. Original speech WAVs/hashes, narration holds, clean master and captions retain their contracts.

Blast Radius: recording

Effects are enabled by default. New event logs use version 2 for sound cues; updated readers accept version 1, while older readers need upgrading. Transcript schema remains version 1. No new dependencies or runtime downloads.