fix(ci): add POSTGRES_DB env var for BDD tests

BDD tests run as a separate process and need POSTGRES_DB set
explicitly in CI environment to use the test database.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: kbighorse

.github/workflows/tests.yml

@@ -21,6 +21,7 @@ jobs:
       POSTGRES_PORT: 54321
       POSTGRES_USER: postgres
       POSTGRES_PASSWORD: postgres
+      POSTGRES_DB: ocotilloapi_test
       DB_DRIVER: postgres
       BASE_URL: http://localhost:8000
       SESSION_SECRET_KEY: supersecretkeyforunittests