feat(transcription): add shared voice input support (#4232)

* feat(webui): add voice transcription input

* feat(webui): render ANSI output in code blocks

* refactor(webui): isolate voice recorder logic

* refactor(transcription): keep websocket ingress thin

* refactor(transcription): resolve channel audio settings on demand

* style(webui): neutralize voice waveform color

* feat(webui): add voice input tooltip

* feat(webui): add voice input keyboard shortcut

* fix(webui): distinguish voice shortcut platforms

* fix(webui): place voice button after model selector

* refactor(webui): share voice hold recording helpers

* fix(desktop): allow microphone voice input

* fix(webui): stabilize token usage month labels

* feat(webui): show voice input on settings overview

* fix(webui): label voice capability as recognition

* fix(webui): align capability overview status

* refactor(webui): isolate transcription socket handling

* fix(webui): soften silent voice waveform

* refactor(audio): clarify transcription service location

* docs(transcription): clarify audio and provider boundaries

* fix(exec): reduce session output polling flake

webui/src/lib/api.ts

@@ -16,6 +16,7 @@ import type {
   SkillDetail,
   SkillsPayload,
   SlashCommand,
+  TranscriptionSettingsUpdate,
   WebSearchSettingsUpdate,
   WorkspacesPayload,
   WebuiThreadPersistedPayload,
@@ -547,3 +548,21 @@ export async function updateImageGenerationSettings(
     token,
   );
 }
+
+export async function updateTranscriptionSettings(
+  token: string,
+  update: TranscriptionSettingsUpdate,
+  base: string = "",
+): Promise<SettingsPayload> {
+  const query = new URLSearchParams();
+  query.set("enabled", String(update.enabled));
+  query.set("provider", update.provider);
+  query.set("model", update.model);
+  query.set("language", update.language);
+  query.set("max_duration_sec", String(update.maxDurationSec));
+  query.set("max_upload_mb", String(update.maxUploadMb));
+  return request<SettingsPayload>(
+    `${base}/api/settings/transcription/update?${query}`,
+    token,
+  );
+}