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/custom.css

@@ -0,0 +1,15 @@
+/* Anchor hover styles */
+.nav-anchor:hover {
+	@apply text-[#BF9E40];
+}
+
+/* Icon wrapper on hover */
+.nav-anchor:hover div {
+	background: #BF9E40 !important;
+	filter: brightness(1) !important;
+}
+
+/* Icon SVG on hover */
+.nav-anchor:hover svg {
+	@apply bg-white !important;
+}