ci: enforce UI greps (remove RELAX_UI_GREPS)

Author: Faxbot Agent

.github/workflows/ci.yml

@@ -32,8 +32,6 @@ jobs:
           # Ensure webhook/inbound endpoints return 200 in CI (compat)
           FAXBOT_TEST_MODE: 'true'
           CALLBACK_COMPAT_200: 'true'
-          # Temporarily relax UI greps until PR5 fully migrates to traits-first
-          RELAX_UI_GREPS: 'true'
         working-directory: api
         run: |
           mkdir -p faxdata