Benjamin Carlsson d979df154c Initialize the packaged GStreamer runtime in the voice host (#42631) ...

## Why

The voice helper previously supported only handshake and shutdown, without
validating that its packaged native runtime could be initialized safely.

## What changed

- Add an `initializeRuntime` protocol exchange that loads GStreamer and the
  required plugins from physical package paths without opening audio devices.
- Restrict plugin discovery, registry access, and native library search paths,
  and keep loaded libraries alive until the helper exits.
- Give initialization a dedicated deadline and terminate the owned helper when
  initialization is cancelled or fails.
- Allow binary-only Rust targets to disable the default Bazel library target.

## Testing

- Cover helper-only packages, cancellation, and environment filtering.
- Add an ignored integration test for initialization from a relocated prepared
  runtime and rejection of duplicate initialization.

GitOrigin-RevId: 8fff68fe26e52cb2e0722dc98fb5f124eddb0d4d

2026-09-03 22:53:45 +00:00

..

lifecycle.rs

Initialize the packaged GStreamer runtime in the voice host (#42631)

2026-09-03 22:53:45 +00:00

packaged_runtime.rs

Initialize the packaged GStreamer runtime in the voice host (#42631)

2026-09-03 22:53:45 +00:00