SwiftSnap API

• GET /health
• GET /api/stripe/health — billing routes deployed?
• POST /api/stripe/create-checkout-session (Subscribe from app)
• POST /api/schedule/post — schedule social post
• GET /api/instagram/oauth/start?callbackUrl=...
• GET /api/linkedin/oauth/start?callbackUrl=...
• GET /api/google-business/oauth/start?openerOrigin=...