Refactor frontend: Enhance chat UI and player initialization

- Updated main.ts to streamline player and chat initialization, removing Alpine.js dependency.
- Improved message rendering with new CSS classes for better styling and layout.
- Added a function to simulate "now playing" titles at regular intervals.
- Revamped style.css with a new design system using CSS variables for better maintainability.
- Removed tailwind.config.js as Tailwind CSS is no longer used.

frontend/package.json

@@ -13,10 +13,6 @@
     "vite": "^8.2.0"
   },
   "dependencies": {
-    "alpinejs": "^3.15.12",
-    "autoprefixer": "^10.5.4",
-    "hls.js": "^1.6.16",
-    "postcss": "^8.5.25",
-    "tailwindcss": "^4.3.3"
+    "hls.js": "^1.6.16"
   }
 }