feat(native): record encoding (#14188)

fix #13784 

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Start/stop system or meeting recordings with Ogg/Opus artifacts and
native start/stop APIs; workspace backup recovery.

* **Refactor**
* Simplified recording lifecycle and UI flows; native runtime now
orchestrates recording/processing and reporting.

* **Bug Fixes**
* Stronger path validation, safer import/export dialogs, consistent
error handling/logging, and retry-safe recording processing.

* **Chores**
* Added cross-platform native audio capture and Ogg/Opus encoding
support.

* **Tests**
* New unit, integration, and e2e tests for recording, path guards,
dialogs, and workspace recovery.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Cargo.toml

@@ -76,6 +76,7 @@ resolver = "3"
   notify = { version = "8", features = ["serde"] }
   objc2 = "0.6"
   objc2-foundation = "0.3"
+  ogg = "0.9"
   once_cell = "1"
   ordered-float = "5"
   parking_lot = "0.12"