feat: add CoopCredits Solana media rewards ecosystem

Add complete  token system with Plex/Tautulli/Overseer integration:
- Anchor program for SPL token mint/burn/transfer
- Express backend with OAuth, webhooks, Solana integration
- Next.js frontend with dashboard, admin panel, wallet management
- Docker deployment for 172.20.1.0/24 infrastructure
- Production configs with SSL, Nginx, health monitoring

Tautulli webhooks auto-mint  on watch events.
Overseer integration burns  for content requests.

backend/.env.example

@@ -0,0 +1,38 @@
+# Database
+DATABASE_URL="postgresql://coop:coop_password@localhost:5432/coop_credits?schema=public"
+
+# Server
+PORT=3001
+NODE_ENV=development
+API_URL=http://localhost:3001
+FRONTEND_URL=http://localhost:3000
+
+# JWT
+JWT_SECRET=your-super-secret-jwt-key-change-this-in-production
+JWT_EXPIRES_IN=7d
+
+# Plex OAuth
+PLEX_CLIENT_ID=your-plex-client-id
+PLEX_CLIENT_SECRET=your-plex-client-secret
+PLEX_REDIRECT_URI=http://localhost:3000/auth/callback
+
+# Tautulli
+TAUTULLI_URL=http://localhost:8181
+TAUTULLI_API_KEY=your-tautulli-api-key
+TAUTULLI_WEBHOOK_SECRET=your-webhook-secret
+
+# Overseer
+OVERSEER_URL=http://localhost:5055
+OVERSEER_API_KEY=your-overseer-api-key
+
+# Solana
+SOLANA_RPC_URL=https://api.devnet.solana.com
+SOLANA_PROGRAM_ID=CoopCredits111111111111111111111111111111111
+SOLANA_MINT_AUTHORITY_KEYPAIR=your-base58-encoded-keypair-for-minting
+SOLANA_TOKEN_DECIMALS=6
+
+# Redis (optional - for caching and pub/sub)
+REDIS_URL=redis://localhost:6379
+
+# Encryption (for wallet private keys)
+ENCRYPTION_KEY=your-32-char-encryption-key!!