v0.0.97

### Added

- Added new Gradium services, `GradiumSTTService` and `GradiumTTSService`, for speech-to-text and text-to-speech functionality using Gradium's API.

- Additions for `AsyncAITTSService` and `AsyncAIHttpTTSService`:

    - Added new `languages`: `pt`, `nl`, `ar`, `ru`, `ro`, `ja`, `he`, `hy`, `tr`, `hi`, `zh`.
    - Updated the default model to `asyncflow_multilingual_v1.0` for improved accuracy and broader language coverage.

- Added optional tool and tool output filters for MCP services.


### Changed

- Updated Deepgram logging to include Deepgram request IDs for improved debugging.

- Text Aggregation Improvements:

    - **Breaking Change**: `BaseTextAggregator.aggregate()` now returns `AsyncIterator[Aggregation]` instead of `Optional[Aggregation]`. This enables the aggregator to return multiple results based on the provided text.
    - Refactored text aggregators to use inheritance: `SkipTagsAggregator` and `PatternPairAggregator` now inherit from `SimpleTextAggregator`, reusing the base class's sentence detection logic.

- Improved interruption handling to prevent bots from repeating themselves. LLM services that return multiple sentences in a single response (e.g., `GoogleLLMService`) are now split into individual sentences before being sent to TTS. This ensures interruptions occur at sentence boundaries, preventing the bot from repeating content after being interrupted during long responses.

- Updated `AICFilter` to use Quail STT as the default model (`AICModelType.QUAIL_STT`). Quail STT is optimized for human-to-machine interaction (e.g., voice agents, speech-to-text) and operates at a native sample rate of 16 kHz with fixed enhancement parameters.

- If an unexpected exception is caught, or if `FrameProcessor.push_error()` is called with an exception, the file name and line number where the exception occured are now logged.

- Updated Smart Turn model weights to v3.1.

- Smart Turn analyzer now uses the full context of the turn rather than just the audio since VAD last triggered.

- Updated `CartesiaSTTService` to return the full transcription `result` in the `TranscriptionFrame` and `InterimTranscriptionFrame`. This provides access to word timestamp data.

- Added tracking headers (`X-Hume-Client-Name` and `X-Hume-Client-Version`) to all requests made by `HumeTTSService` to the Hume API for better usage tracking and analytics.
  - Added `stop()` and `cancel()` cleanup methods to `HumeTTSService` to properly close the HTTP client and prevent resource leaks.


### Deprecated

- NVIDIA Services name changes (all functionality is unchanged):

    - `NimLLMService` is now deprecated, use `NvidiaLLMService` instead.
    - `RivaSTTService` is now deprecated, use `NvidiaSTTService` instead.
    - `RivaTTSService` is now deprecated, use `NvidiaTTSService` instead.
    - Use `uv pip install pipecat-ai[nvidia]` instead of `uv pip install pipecat-ai[riva]`

- The `noise_gate_enable` parameter in `AICFilter` is deprecated and no longer has any effect. Noise gating is now handled automatically by the AIC VAD system. Use `AICFilter.create_vad_analyzer()` for VAD functionality instead.

- Package `pipecat.sync` is deprecated, use `pipecat.utils.sync` instead.


### Fixed

- Fixed bug in `PatternPairAggregator` where pattern handlers could be called multiple times for `KEEP` or `AGGREGATE` patterns.

- Fixed sentence aggregation to correctly handle ambiguous punctuation in streaming text, such as currency ("$29.95") and abbreviations ("Mr. Smith").

- Fixed an issue in `AWSTranscribeSTTService` where the `region` arg was always set to `us-east-1` when providing an AWS_REGION env var.

- Fixed an issue in `SarvamTTSService` where the last sentence was not being spoken. Now, audio is flushed when the TTS services receives the `LLMFullResponseEndFrame` or `EndFrame`.

- Fixed an issue in `DeepgramTTSService` where a `TTSStoppedFrame` was incorrectly pushed after a functional call. This caused an issue with the voice-ui-kit's conversational panel rending of the LLM output after a function call.

- Fixed an issue where `LLMTextFrame.skip_tts` was being overwritten by LLM services.

- Fixed an issue that caused `WebsocketService` instances to attempt reconnection during shutdown.

- Fixed an issue in `ElevenLabsTTSService` where character usage metrics were only reported on the first TTS generation per turn.