refactor: replace GSAP animations with CSS animations across components

- Updated RootLayout to include a noise overlay class.
- Refactored LiveModerationFeed to use CSS animations for item entry.
- Simplified AmbientCanvas by removing WebGL and using pure CSS for ambient effects.
- Converted Chatbot to use CSS for floating window animations.
- Updated Card component to include a gradient border.
- Refactored PageTransition to use CSS for fade-scale animations.
- Enhanced SectionHeader with reveal-up animation class.
- Replaced GSAP animations in NavRail with CSS animations for item entry.
- Refactored VoiceStage to use CSS for speaker node animations and pulse rings.
- Removed GSAP dependencies from use-gsap-animation hook, implementing CSS-based stagger reveal.

services/frontend/package.json

@@ -10,10 +10,8 @@
     "format": "biome format --write"
   },
   "dependencies": {
-    "@gsap/react": "^2.1.2",
     "@orpc/client": "1.15.0",
     "clsx": "^2.1.1",
-    "gsap": "^3.15.0",
     "lucide-react": "^1.33.0",
     "next": "16.3.2",
     "next-themes": "^0.4.6",
@@ -21,8 +19,7 @@
     "react": "19.2.8",
     "react-dom": "19.2.8",
     "swr": "^2.5.1",
-    "tailwind-merge": "^3.6.0",
-    "three": "^0.185.1"
+    "tailwind-merge": "^3.6.0"
   },
   "devDependencies": {
     "@biomejs/biome": "2.5.10",