Available Endpoints
GET /api/health - Health check
GET /health - Health check (alternative route)
POST /api/klaviyo - Klaviyo subscription
GET /api/spotify - Spotify authentication
GET /api/tide - Tide data
POST /api/stellar-union-newsletter - Newsletter signup
POST /api/stellar-union-inquire - Product inquiries
GET/POST /api/webhook - Webhook handler
Middleware Routes
GET /middleware/tide - Tide data
GET /middleware/spotify/authenticate - Spotify authentication
POST /middleware/klaviyo/subscribe - Klaviyo subscription
POST /middleware/stellar-union/newsletter - Newsletter signup
POST /middleware/stellar-union/inquire - Product inquiries
GET/POST /webhook/* - Webhook handler
