production runtime and mock removal

task_plan.md

@@ -611,3 +611,12 @@ Phase 77 - Alibaba Cloud RDS PostgreSQL Adapter complete
 - [x] Update environment/deployment guidance and add focused regression coverage.
 - [x] Run focused tests, full tests, TypeScript, production build, migration validation, diff hygiene, and final read-only Sol review.
 - **Status:** complete
+
+### Phase 78: Production Billing Runtime and Mock Removal
+- [x] Remove provider Mock fallback and fail clearly when required production credentials are missing
+- [x] Keep billing quote calculation available through the real provider/model catalog
+- [x] Make Docker Compose run the static Web and Go API together with one same-origin `/api` boundary
+- [x] Align runtime environment examples and deployment documentation with the formal production path
+- [x] Add focused regression coverage for provider configuration and quote availability
+- [x] Verify Go tests, frontend tests/typecheck/build, Compose/deployment static checks, and diff hygiene
+- **Status:** complete; Docker/real-provider rollout verification remains deployment-time