# js/audio/ — agents.md
RC-375D84 S-2. Module map: `MODULES.md`; runtime model: `architecture.md`.

Self-contained module. Exports `ISLE_AUDIO = { AudioEngine }`.

- `new AudioEngine()` + `.init()` + `.resume()` + `.setMuted(m)` + `.play(ev)`
  where `ev` is an item from `state.events` ({type, strength, mat, ...}).
- All sound is synthesized (oscillators + noise buffers); no assets, offline.
  Must degrade silently when `AudioContext` is undefined (the DOM-stub test
  asserts boot with `AudioContext: undefined`).
- Event names are a contract with physics/damage + step ('launch','hit',
  'break','crack','pop','crush','bird_ground','ability_*','bird_gone',
  'level_won','level_lost','star','ui'). Adding an event type means adding its
  synth branch here (unknown types no-op — that is intentional).