feat: Transak-only gateway + pass credentials via docker-compose

Remove Coinbase and Ramp Network from onramp registry, keeping
Transak as the sole payment gateway. Add TRANSAK_* env vars to
docker-compose for .env override of Infisical values.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -44,6 +44,9 @@ services:
       - SMTP_PASS=${SMTP_PASS}
       - TWENTY_API_URL=http://twenty-ch-server:3000
       - TWENTY_API_TOKEN=${TWENTY_API_TOKEN:-}
+      - TRANSAK_API_KEY=${TRANSAK_API_KEY:-}
+      - TRANSAK_SECRET=${TRANSAK_SECRET:-}
+      - TRANSAK_ENV=${TRANSAK_ENV:-PRODUCTION}
       - OLLAMA_URL=http://ollama:11434
       - INFISICAL_AI_CLIENT_ID=${INFISICAL_AI_CLIENT_ID}
       - INFISICAL_AI_CLIENT_SECRET=${INFISICAL_AI_CLIENT_SECRET}

modules/rflows/lib/onramp-registry.ts

@@ -1,18 +1,14 @@
 /**
  * On-ramp provider registry — discovers available providers and selects defaults.
  *
- * Priority order: transak > coinbase > ramp (first available wins as default).
+ * Currently Transak-only. Coinbase and Ramp Network disabled.
  */
 
 import type { OnrampProvider, OnrampProviderId } from './onramp-provider';
 import { TransakOnrampAdapter } from './transak-onramp';
-import { CoinbaseOnrampAdapter } from './coinbase-onramp';
-import { RampOnrampAdapter } from './ramp-onramp';
 
 const providers: OnrampProvider[] = [
 	new TransakOnrampAdapter(),
-	new CoinbaseOnrampAdapter(),
-	new RampOnrampAdapter(),
 ];
 
 export function getAvailableProviders(): { id: OnrampProviderId; name: string }[] {