fix: emit audio_start event when audio begins

[vrtnis]

Fixes a bug where RealtimeSession did not emit the audio_start event, despite it being defined in the type system.

Changes

• Emit audio_start once per turn when the first audio chunk arrives

• Reset internal #audioStarted flag on:

  • turn_started
  • audio_done
  • audio_interrupted

• Added test to verify audio_start fires once per turn

• Aligns behavior with existing type definitions and verified with pnpm build,test,lint

Resolves #235

[changeset-bot]

🦋 Changeset detected

Latest commit: e4c18cb

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

Name	Type
@openai/agents-realtime	Patch
@openai/agents	Patch
@openai/agents-extensions	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR