fix(ci): add missing required env vars to generate-client workflow

Add PROJECT_NAME and FIRST_SUPERUSER environment variables that are required by
Settings class in config.py but were missing from the generate-client workflow.

Error was:
  pydantic_core._pydantic_core.ValidationError: 2 validation errors for Settings
  PROJECT_NAME - Field required
  FIRST_SUPERUSER - Field required

Related to CUR-29

🤖 Generated by Aygentic

Co-Authored-By: Aygentic <noreply@aygentic.com>

Author: amostt

.github/workflows/generate-client.yml

@@ -39,7 +39,9 @@ jobs:
     - run: uv run bash scripts/generate-client.sh
       env:
         VIRTUAL_ENV: backend/.venv
+        PROJECT_NAME: CurriculumExtractor
         SECRET_KEY: just-for-generating-client
+        FIRST_SUPERUSER: admin@example.com
         FIRST_SUPERUSER_PASSWORD: just-for-generating-client
         # Supabase and Redis dummy values for client generation
         DATABASE_URL: postgresql://postgres:password@localhost:5432/app