v0.0.78

### Added

- Added `enable_emulated_vad_interruptions` to `LLMUserAggregatorParams`.  When user speech is emulated (e.g. when a transcription is received but VAD doesn't detect speech), this parameter controls whether the emulated speech can interrupt the bot. Default is False (emulated speech is ignored while the bot is speaking).

- Added new `handle_sigint` and `handle_sigterm` to `RunnerArguments`. This allows applications to know what settings they should use for the environment they are running on. Also, added `pipeline_idle_timeout_secs` to be able to control the `PipelineTask` idle timeout.

- Added `processor` field to `ErrorFrame` to indicate `FrameProcessor` that generated the error.

- Added new language support for `AWSTranscribeSTTService`. All languages supporting streaming data input are now supported: https://docs.aws.amazon.com/transcribe/latest/dg/supported-languages.html

- Added support for Simli Trinity Avatars. A new `is_trinity_avatar` parameter has been introduced to specify whether the provided `faceId` corresponds to a Trinity avatar, which is required for optimal Trinity avatar performance.

- The development runner how handles custom `body` data for `DailyTransport`.  The `body` data is passed to the Pipecat client. You can POST to the `/start` endpoint with a request body of:

  ```
  {
      "createDailyRoom": true,
      "dailyRoomProperties": { "start_video_off": true },
      "body": { "custom_data": "value" }
  }
  ```

  The `body` information is parsed and used in the application. The `dailyRoomProperties` are currently not handled.

- Added detailed latency logging to `UserBotLatencyLogObserver`, capturing average response time between user stop and bot start, as well as minimum and maximum response latency.

- Added Chinese, Japanese, Korean word timestamp support to `CartesiaTTSService`.

- Added `region` parameter to `GladiaSTTService`. Accepted values: eu-west (default), us-west.

### Changed

- System frames are now queued. Before, system frames could be generated from any task and would not guarantee any order which was causing undesired behavior. Also, it was possible to get into some rare recursion issues because of the way system frames were executed (they were executed in-place, meaning calling `push_frame()` would finish after the system frame traversed all the pipeline). This makes system frames more deterministic.

- Changed the default model for both `ElevenLabsTTSService` and `ElevenLabsHttpTTSService` to `eleven_turbo_v2_5`. The rationale for this change is that the Turbo v2.5 model exhibits the most stable voice quality along with very low latency TTFB; latencies are on par with the Flash v2.5 model. Also, the Turbo v2.5 model outputs word/timestamp alignment data with correct spacing.

- The development runners `/connect` and `/start` endpoint now both return `dailyRoom` and `dailyToken` in place of the previous `room_url` and `token`.

- Updated the `pipecat.runner.daily` utility to only a take `DAILY_API_URL` and `DAILY_SAMPLE_ROOM_URL` environment variables instead of argparsing `-u` and `-k`, respectively.

- Updated `daily-python` to 0.19.6.

- Changed `TavusVideoService` to send audio or video frames only after the transport is ready, preventing warning messages at startup.

- The development runner now strips any provided protocol (e.g. https://) from the proxy address and issues a warning. It also strips trailing `/`.

### Deprecated

- In the `pipecat.runner.daily`, the `configure_with_args()` function is deprecated. Use the `configure()` function instead.

- The development runner's `/connect` endpoint is deprecated and will be removed in a future version. Use the `/start` endpoint in its place. In the meantime, both endpoints work and deliver equivalent functionality.

### Fixed

- Fixed a `DailyTransport` issue that would result in an unhandled `concurrent.futures.CancelledError` when a future is cancelled.

- Fixed a `RivaSTTService` issue that would result in an unhandled `concurrent.futures.CancelledError` when a future is cancelled when reading from the audio chunks from the incoming audio stream.

- Fixed an issue in the `BaseOutputTransport`, mainly reproducible with `FastAPIWebsocketOutputTransport` when the audio mixer was enabled, where the loop could consume 100% CPU by continuously returning without delay, preventing other asyncio tasks (such as cancellation or shutdown signals) from being processed.

- Fixed an issue where `BotStartedSpeakingFrame` and `BotStoppedSpeakingFrame` were not emitted when using `TavusVideoService` or `HeyGenVideoService`.

- Fixed an issue in `LiveKitTransport` where empty `AudioRawFrame`s were pushed down the pipeline. This resulted in warnings by the STT processor.
- Fixed `PiperTTSService` to send text as a JSON object in the request body,
  resolving compatibility with Piper's HTTP API.

- Fixed an issue with the `TavusVideoService` where an error was thrown due to missing transcription callbacks.

- Fixed an issue in `SpeechmaticsSTTService` where the `user_id` was set to `None` when diarization is not enabled.

### Performance

- Fixed an issue in `TaskObserver` (a proxy to all observers) that was degrading global performance.

### Other

- Added `07aa-interruptible-soniox.py`, `07ab-interruptible-inworld-http.py`, `07ac-interruptible-asyncai.py` and `07ac-interruptible-asyncai-http.py` release evals.