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 -->

packages/frontend/native/index.d.ts

@@ -40,6 +40,37 @@ export declare function decodeAudio(buf: Uint8Array, destSampleRate?: number | u
 
 /** Decode audio file into a Float32Array */
 export declare function decodeAudioSync(buf: Uint8Array, destSampleRate?: number | undefined | null, filename?: string | undefined | null): Float32Array
+
+export interface RecordingArtifact {
+  id: string
+  filepath: string
+  sampleRate: number
+  channels: number
+  durationMs: number
+  size: number
+}
+
+export interface RecordingSessionMeta {
+  id: string
+  filepath: string
+  sampleRate: number
+  channels: number
+  startedAt: number
+}
+
+export interface RecordingStartOptions {
+  appProcessId?: number
+  excludeProcessIds?: Array<number>
+  outputDir: string
+  format?: string
+  sampleRate?: number
+  channels?: number
+  id?: string
+}
+
+export declare function startRecording(opts: RecordingStartOptions): RecordingSessionMeta
+
+export declare function stopRecording(id: string): RecordingArtifact
 export interface MermaidRenderOptions {
   theme?: string
   fontFamily?: string