Complete Docker migration with Next.js 15 and cleaned design

- Migrated from Express.js to Next.js 15 with TypeScript
- Added Docker Compose v2 with multi-stage builds
- Implemented Docker Bake support for improved builds
- Created professional component structure with Tailwind CSS
- Added enhanced visual design with glass morphism effects
- Improved responsive layout and better UX flow
- Updated all dependencies and configurations
- Added proper TypeScript types and modern practices
- Created development scripts for easy container management
- Cleaned up excessive animations for better user experience

.env.example

@@ -1,12 +1,21 @@
 # Environment Configuration for KidsAI Explorer
-# Copy this file to .env and add your API tokens for better performance
+# Copy this file to .env and add your API tokens
 
-# Hugging Face API Token (Optional - improves rate limits)
+# Docker Bake Configuration for better build performance
+COMPOSE_BAKE=true
+
+# OpenAI API Key (Recommended for best experience)
+# Get your API key at: https://platform.openai.com/api-keys
+OPENAI_API_KEY=your_openai_api_key_here
+
+# Hugging Face API Token (Optional - improves rate limits for fallback)
 # Get your free token at: https://huggingface.co/settings/tokens
-# HUGGING_FACE_TOKEN=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
+HUGGING_FACE_TOKEN=your_hugging_face_token_here
 
-# Server Port (default: 3002)
-# PORT=3002
+# Optional: If using Prisma with PostgreSQL database
+# DB_PASSWORD=your_secure_password_here
+# DATABASE_URL="postgresql://kidsai:${DB_PASSWORD}@database:5432/kidsai?schema=public"
 
-# Environment Mode
-# NODE_ENV=production
+# Next.js Configuration
+NODE_ENV=development
+PORT=3444