fix: add APP_URL and missing env vars to Docker Compose configs

APP_URL was never passed to the backend container, causing Stripe
checkout success_url to redirect to http://localhost instead of the
production domain. The prod overlay also completely replaced the base
environment block, dropping all Stripe, SSO, WebAuthn, and invite
token variables.

- Add APP_URL to base docker-compose.yml (default: http://localhost)
- Add all missing vars to docker-compose.prod.yml with production
  defaults (app.hoaledgeriq.com)

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

docker-compose.prod.yml

@@ -40,6 +40,22 @@ services:
       - NEW_RELIC_ENABLED=${NEW_RELIC_ENABLED:-false}
       - NEW_RELIC_LICENSE_KEY=${NEW_RELIC_LICENSE_KEY:-}
       - NEW_RELIC_APP_NAME=${NEW_RELIC_APP_NAME:-HOALedgerIQ_App}
+      - STRIPE_SECRET_KEY=${STRIPE_SECRET_KEY:-}
+      - STRIPE_WEBHOOK_SECRET=${STRIPE_WEBHOOK_SECRET:-}
+      - STRIPE_STARTER_PRICE_ID=${STRIPE_STARTER_PRICE_ID:-}
+      - STRIPE_PROFESSIONAL_PRICE_ID=${STRIPE_PROFESSIONAL_PRICE_ID:-}
+      - STRIPE_ENTERPRISE_PRICE_ID=${STRIPE_ENTERPRISE_PRICE_ID:-}
+      - GOOGLE_CLIENT_ID=${GOOGLE_CLIENT_ID:-}
+      - GOOGLE_CLIENT_SECRET=${GOOGLE_CLIENT_SECRET:-}
+      - GOOGLE_CALLBACK_URL=${GOOGLE_CALLBACK_URL:-https://app.hoaledgeriq.com/api/auth/google/callback}
+      - AZURE_CLIENT_ID=${AZURE_CLIENT_ID:-}
+      - AZURE_CLIENT_SECRET=${AZURE_CLIENT_SECRET:-}
+      - AZURE_TENANT_ID=${AZURE_TENANT_ID:-}
+      - AZURE_CALLBACK_URL=${AZURE_CALLBACK_URL:-https://app.hoaledgeriq.com/api/auth/azure/callback}
+      - WEBAUTHN_RP_ID=${WEBAUTHN_RP_ID:-app.hoaledgeriq.com}
+      - WEBAUTHN_RP_ORIGIN=${WEBAUTHN_RP_ORIGIN:-https://app.hoaledgeriq.com}
+      - INVITE_TOKEN_SECRET=${INVITE_TOKEN_SECRET:-}
+      - APP_URL=${APP_URL:-https://app.hoaledgeriq.com}
     deploy:
       resources:
         limits: