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/building-stories.mdx

@@ -0,0 +1,37 @@
+---
+title: "Building Stories"
+description: "Create multi-voice narratives with the Stories Editor"
+---
+
+## Getting Started
+
+The Stories Editor is perfect for creating podcasts, audiobooks, and multi-speaker content.
+
+<Steps>
+  <Step title="Create Story">
+    **Stories** → **+ New Story**
+  </Step>
+  <Step title="Add Tracks">
+    Create tracks for each speaker
+  </Step>
+  <Step title="Add Clips">
+    Generate or drag audio to tracks
+  </Step>
+  <Step title="Arrange">
+    Position and trim clips on timeline
+  </Step>
+  <Step title="Export">
+    Render final audio
+  </Step>
+</Steps>
+
+## Use Cases
+
+- Multi-host podcasts
+- Audiobook narration with character voices
+- Game dialogue scenes
+- Educational content with multiple speakers
+
+## Coming Soon
+
+Full timeline editor documentation will be added as features are finalized.