Fix sticky search bar z-index, add custom logo mount

- Increase sticky search bar z-index to 30 (above pattern cards)
- Add static/custom mount back to docker-compose

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docker-compose.yml

@@ -12,6 +12,7 @@ services:
       - ./playlists.json:/app/playlists.json
       - ./metadata_cache.json:/app/metadata_cache.json
       - ./patterns:/app/patterns
+      - ./static/custom:/app/static/custom  # Custom logo/branding
       # Mount Docker socket to allow container to restart itself
       - /var/run/docker.sock:/var/run/docker.sock
       # Mount timezone file from host for Still Sands scheduling

templates/index.html

@@ -501,7 +501,7 @@ window.loadPatterns = async function() {
       background: #f9fafb;
       border-bottom: 1px solid #e5e7eb;
       box-shadow: 0 2px 4px rgba(0,0,0,0.08);
-      z-index: 9;
+      z-index: 30;
       transform: translateY(-100%);
       transition: transform 0.2s ease;
     `;