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/overview/voice-cloning.mdx

@@ -0,0 +1,75 @@
+---
+title: "Voice Cloning"
+description: "Clone any voice from just a few seconds of audio"
+---
+
+## Overview
+
+Voicebox uses **Qwen3-TTS** from Alibaba to achieve near-perfect voice cloning from just a few seconds of audio. The model captures prosody, emotion, and natural cadence.
+
+## How It Works
+
+<Steps>
+  <Step title="Upload or Record Sample">
+    Provide 10-30 seconds of clear speech from the target voice
+  </Step>
+  <Step title="Model Analysis">
+    Qwen3-TTS analyzes vocal characteristics, tone, and speaking patterns
+  </Step>
+  <Step title="Voice Profile Created">
+    The model generates a voice embedding for synthesis
+  </Step>
+  <Step title="Generate Speech">
+    Use the profile to generate any text in the cloned voice
+  </Step>
+</Steps>
+
+## Best Practices
+
+### Sample Quality
+
+<CardGroup cols={2}>
+  <Card title="Do" icon="check">
+    - Use 10-30 seconds of audio
+    - Clear, consistent speaking
+    - Minimal background noise
+    - Natural speaking pace
+  </Card>
+  <Card title="Don't" icon="xmark">
+    - Very short clips (< 5 seconds)
+    - Heavy background noise
+    - Music or overlapping voices
+    - Heavily processed audio
+  </Card>
+</CardGroup>
+
+### Multiple Samples
+
+Adding multiple samples from the same speaker can improve quality:
+
+- Different speaking styles (casual, formal)
+- Different emotions (happy, serious)
+- Different recording conditions
+
+<Tip>
+  The model will learn a more robust representation from diverse samples.
+</Tip>
+
+## Supported Languages
+
+Currently supported:
+- English
+- Chinese (Mandarin)
+
+More languages coming soon.
+
+## Limitations
+
+<Warning>
+  Voice cloning should only be used with consent. Ensure you have permission to clone someone's voice.
+</Warning>
+
+- Quality depends on sample clarity
+- Works best with consistent speaking tone
+- May struggle with extreme accents or speech impediments
+- Background noise reduces quality