Weber Clio Bridge

• GET /health
• GET /button.js (paste <script src="https://clio-bridge.bosseo.dev/button.js"> into GHL custom JS)
• GET /oauth/start (one-time Clio OAuth)
• POST /api/clio/check {ghl_contact_id}
• POST /api/clio/push-contact {ghl_contact_id}
• GET /api/clio/health