feat(tts): add api endpoints and optimization for apple silicon

Introduce a comprehensive TTS/ASR module that:
- Adds /v1/tts-asr/config, /status, /warmup, /tts, /asr endpoints with detailed JSON responses
- Implements Apple‑Silicon detection, device selection (MPS/CUDA/CPU), and memory limiting logic
- Supports selectable model size, quantization, and offline mode via environment variables
- Adds robust audio validation and multi‑path resampling fallback
- Provides new README sections for API usage, device detection, and performance benchmarking
- Includes a full testing suite: unit tests, integration tests, macOS simulation and performance reports
- Updates backend dependencies and CI scripts
- Adds new front‑end views and components for Univer editor integration

All changes are backward compatible; new features are exposed through environment variables and new API routes.

src/views/EditorView.vue

@@ -1,7 +1,9 @@
 <script setup>
 import { ref } from 'vue'
 import { defineAsyncComponent } from 'vue'
+import { useRouter } from 'vue-router'
 
+const router = useRouter()
 const MilkdownEditor = defineAsyncComponent(() => import('../components/MilkdownEditor.vue'))
 
 const markdown = ref('')
@@ -9,6 +11,14 @@ const markdown = ref('')
 
 <template>
   <div class="editor-view">
+    <div class="editor-toolbar">
+      <button class="docs-toggle" @click="router.push('/docs')" title="切换到文档模式">
+        <svg viewBox="0 0 16 16" width="16" height="16" fill="currentColor">
+          <path d="M0 2.5A1.5 1.5 0 011.5 1h2.793a.5.5 0 01.353.146l1.5 1.5a.5.5 0 00.354.146H13.5A1.5 1.5 0 0115 4.5v7.5a1.5 1.5 0 01-1.5 1.5h-11A1.5 1.5 0 011 12v-9.5z"/>
+        </svg>
+        <span class="toggle-label">文档</span>
+      </button>
+    </div>
     <MilkdownEditor v-model:markdown="markdown" />
   </div>
 </template>
@@ -18,5 +28,39 @@ const markdown = ref('')
   position: relative;
   z-index: 1;
   height: 100%;
+  display: flex;
+  flex-direction: column;
+}
+
+.editor-toolbar {
+  position: absolute;
+  top: 8px;
+  right: 16px;
+  z-index: 10;
+}
+
+.docs-toggle {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  padding: 6px 12px;
+  border: 1px solid var(--panel-border);
+  background: var(--app-bg);
+  color: var(--muted-text);
+  cursor: pointer;
+  border-radius: 6px;
+  font-size: 13px;
+  transition: all 0.2s ease;
+  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
+}
+
+.docs-toggle:hover {
+  color: var(--focus-ring);
+  border-color: var(--focus-ring);
+  background: var(--ghost-code-bg);
+}
+
+.toggle-label {
+  font-weight: 500;
 }
 </style>