fix#13784
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## 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.
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<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
* **New Features**
* Native/WASM Mermaid and Typst SVG preview rendering on desktop and
mobile, plus cross-platform Preview plugin integrations.
* **Improvements**
* Centralized, sanitized rendering bridge with automatic Typst
font-directory handling and configurable native renderer selection.
* More consistent and robust error serialization and worker-backed
preview flows for improved stability and performance.
* **Tests**
* Extensive unit and integration tests for preview rendering, font
discovery, sanitization, and error serialization.
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DarkSky