chore: send_user_audio public

[sebvanleuven]

send_user_audio is a function that's interacted with. This should not be private and be exposed by the SDK.
This exposes this function and allows to send in audio streams directly.

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Summary by cubic

Expose send_user_audio on the SDK client to let apps stream raw 16-bit PCM audio to Anam over WebRTC. Validates the connection and forwards audio to the streaming pipeline.

• New Features
  • Added send_user_audio(audio_bytes, sample_rate, num_channels) to the public client; accepts mono or stereo PCM and raises SessionError if not connected.

^{Written for commit 217c04f. Summary will update on new commits.}

[cubic-dev-ai]

1 issue found across 2 files

Prompt for AI agents (all issues)

Check if these issues are valid — if so, understand the root cause of each and fix them.


<file name="src/anam/client.py">

<violation number="1" location="src/anam/client.py:613">
P0: The underlying implementation of `send_user_audio` in `StreamingClient` (which this method delegates to) contains a critical bug: it calls `self._audio_transceiver.sender.replaceTrack(...)` without awaiting it. Since `replaceTrack` is a coroutine in `aiortc`, the track replacement will never execute, and no user audio will be transmitted.

You must either:
1. Update `StreamingClient.send_user_audio` to wrap the `replaceTrack` call in `asyncio.create_task()`.
2. Or change both this method and `StreamingClient.send_user_audio` to be `async` and await the call.</violation>
</file>

_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}