Add .npmrc for bun usage and update dependencies

- Created a new .npmrc file to enforce bun usage.
- Bumped version numbers for multiple packages to 0.1.9 in bun.lock.
- Added react-sound-visualizer dependency to enhance audio visualization features.
- Introduced convert:assets script in package.json for asset optimization.
- Updated CONTRIBUTING.md with instructions for converting assets to web formats.
- Added documentation files for API endpoints and developer guidelines in the docs directory.

docs/api/generation.mdx

@@ -0,0 +1,119 @@
+---
+title: "Generation API"
+description: "Generate speech from text"
+---
+
+## Generate Speech
+
+```http
+POST /generate
+```
+
+**Request:**
+```json
+{
+  "text": "Hello world",
+  "profile_id": "abc123",
+  "language": "en"
+}
+```
+
+**Response:**
+```json
+{
+  "id": "gen123",
+  "text": "Hello world",
+  "profile_id": "abc123",
+  "language": "en",
+  "audio_url": "/audio/gen123.wav",
+  "duration": 2.3,
+  "created_at": "2024-01-29T12:00:00Z"
+}
+```
+
+## List History
+
+```http
+GET /history
+```
+
+**Query Parameters:**
+- `profile_id` (optional) - Filter by voice profile
+- `limit` (optional) - Number of results (default: 50)
+- `offset` (optional) - Pagination offset
+
+**Response:**
+```json
+{
+  "generations": [
+    {
+      "id": "gen123",
+      "text": "Hello world",
+      "profile_id": "abc123",
+      "duration": 2.3,
+      "created_at": "2024-01-29T12:00:00Z"
+    }
+  ],
+  "total": 100
+}
+```
+
+## Get Generation
+
+```http
+GET /history/{id}
+```
+
+**Response:**
+```json
+{
+  "id": "gen123",
+  "text": "Hello world",
+  "profile_id": "abc123",
+  "language": "en",
+  "audio_url": "/audio/gen123.wav",
+  "duration": 2.3,
+  "created_at": "2024-01-29T12:00:00Z"
+}
+```
+
+## Delete Generation
+
+```http
+DELETE /history/{id}
+```
+
+**Response:**
+```json
+{
+  "success": true
+}
+```
+
+## TypeScript Example
+
+```typescript
+import { VoiceboxClient } from '@/lib/api'
+
+const client = new VoiceboxClient({
+  baseUrl: 'http://localhost:17493'
+})
+
+// Generate speech
+const generation = await client.generate({
+  text: 'Hello world',
+  profile_id: 'abc123',
+  language: 'en'
+})
+
+// Get audio URL
+const audioUrl = generation.audio_url
+
+// List history
+const history = await client.listHistory({
+  profile_id: 'abc123',
+  limit: 20
+})
+```
+
+For full API documentation, visit `http://localhost:17493/docs` when the server is running.