Allows each GHL sub-account to use a different Cast sender ID instead of
the global CAST_SENDER_ID default.
- store.TokenRecord gains a sender_id field (MongoDB)
- store.UpdateSenderID method to set it per location
- cast.Client.SendSMS accepts a senderID override param (empty = use
client-level default)
- webhook.processOutbound reads the location's sender_id from the token
record and passes it to Cast
- new admin handler: PUT /api/admin/locations/{locationId}/sender-id
protected by Authorization: Bearer <INBOUND_API_KEY>
Co-Authored-By: Paperclip <noreply@paperclip.ing>
Complete MVP implementation of the Cast GHL Conversation Provider bridge:
- Go module setup with chi router and mongo-driver dependencies
- Config loading with env var validation and defaults
- MongoDB token store with upsert, get, update, delete operations
- Cast.ph SMS client with 429 retry logic and typed errors
- Phone number normalization (E.164 ↔ Philippine local format)
- GHL OAuth 2.0 install/callback/refresh flow
- GHL webhook handler with ECDSA signature verification (async dispatch)
- GHL API client for message status updates and inbound message stubs
- Multi-stage Dockerfile, docker-compose with MongoDB, Woodpecker CI pipeline
- Unit tests for phone normalization, Cast client, GHL webhook, and OAuth handlers
Co-Authored-By: SideKx <sidekx.ai@sds.dev>
