Sync speech recognition settings across devices (#1217)

* fix: sync STT settings across devices
Persist speech recognition preferences through shared OpenChamber settings so mobile and desktop stay in sync.

* fix bot review

* fix(voice): sync transcribe-on-stop setting

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Co-authored-by: Konstantin Zolin <kzolin@alfabank.ru>
Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>

packages/ui/src/lib/desktop.ts

@@ -166,6 +166,13 @@ export type DesktopSettings = {
   responseStyleEnabled?: boolean;
   responseStylePreset?: 'concise' | 'detailed' | 'mentor' | 'pushback' | 'noFiller' | 'matchEnergy' | 'warmPeer' | 'custom';
   responseStyleCustomInstructions?: string;
+  sttProvider?: 'browser' | 'server';
+  sttServerUrl?: string;
+  sttModel?: string;
+  sttLanguage?: string;
+  sttSilenceThresholdDb?: number;
+  sttSilenceHoldMs?: number;
+  sttTranscribeOnStop?: boolean;
 };
 
 type TauriGlobal = {