feat: add STT support, Gemini TTS, and expand usage tracking

- Speech-to-Text: full pipeline with sttCore handler, /v1/audio/transcriptions
  endpoint, sttConfig for OpenAI, Gemini, Groq, Deepgram, AssemblyAI,
  HuggingFace, NVIDIA Parakeet; new 9router-stt skill
- Gemini TTS: add gemini provider with 30 prebuilt voices and TTS_PROVIDER_CONFIG
- Usage: implement GLM (intl/cn) and MiniMax (intl/cn) quota fetchers; refactor
  Gemini CLI usage to use retrieveUserQuota with per-model buckets
- Disabled models: lowdb-backed disabledModelsDb + /api/models/disabled route
- Header search: reusable Zustand store (headerSearchStore) wired into Header
- CLI tools: add Claude Cowork tool card and cowork-settings API
- Providers: introduce mediaPriority sorting in getProvidersByKind, add
  Kimi K2.6, reorder hermes, drop qwen STT kind
- UI: expand media-providers/[kind]/[id] page (+314), enhance OAuthModal,
  ModelSelectModal, ProviderTopology, ProxyPools, ProviderLimits
- Assets: refresh provider PNGs (alicode, byteplus, cloudflare-ai, nvidia,
  ollama, vertex, volcengine-ark) and add aws-polly, fal-ai, jina-ai, recraft,
  runwayml, stability-ai, topaz, black-forest-labs

open-sse/handlers/ttsCore.js

@@ -48,16 +48,16 @@ function createTtsResponse(base64Audio, format, responseFormat) {
  *
  * @returns {Promise<{success, response, status?, error?}>}
  */
-export async function handleTtsCore({ provider, model, input, credentials, responseFormat = "mp3" }) {
+export async function handleTtsCore({ provider, model, input, credentials, responseFormat = "mp3", language }) {
   if (!input?.trim()) {
     return createErrorResult(HTTP_STATUS.BAD_REQUEST, "Missing required field: input");
   }
 
   try {
-    // Special-case adapters (google-tts, edge-tts, local-device, elevenlabs, openai, openrouter)
+    // Special-case adapters (google-tts, edge-tts, local-device, elevenlabs, openai, openrouter, gemini)
     const adapter = getTtsAdapter(provider);
     if (adapter) {
-      const result = await adapter.synthesize(input.trim(), model, credentials, responseFormat);
+      const result = await adapter.synthesize(input.trim(), model, credentials, responseFormat, { language });
       // Adapter may return a full {success, response} (legacy) or {base64, format}
       if (result.success !== undefined) return result;
       return createTtsResponse(result.base64, result.format, responseFormat);