Remove re-export shim from keycloak_auth.py, update consumer imports

- rbac_api.py: import get_current_user from auth.dependencies directly
- keycloak_auth.py: remove re-export of dependencies module symbols
- pdf_service.py, file_processor.py: remove misleading compat comments

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend-core/auth/keycloak_auth.py

@@ -374,13 +374,3 @@ class HybridAuthenticator:
         if self.keycloak_auth:
             await self.keycloak_auth.close()
 
-
-# Re-export factory functions and FastAPI dependencies from dependencies module
-# for backward compatibility with existing imports
-from .dependencies import (  # noqa: E402, F401
-    get_keycloak_config_from_env,
-    get_authenticator,
-    get_auth,
-    get_current_user,
-    require_role,
-)

backend-core/rbac_api.py

@@ -27,7 +27,8 @@ try:
     from auth import get_current_user, TokenExpiredError, TokenInvalidError
 except ImportError:
     # Fallback for standalone testing
-    from auth.keycloak_auth import get_current_user, TokenExpiredError, TokenInvalidError
+    from auth.keycloak_auth import TokenExpiredError, TokenInvalidError
+    from auth.dependencies import get_current_user
 
 # Configuration from environment - NO DEFAULT SECRETS
 ENVIRONMENT = os.environ.get("ENVIRONMENT", "development")

backend-core/services/file_processor.py

@@ -31,7 +31,6 @@ from .image_processing import ImageProcessor
 
 logger = logging.getLogger(__name__)
 
-# Re-export types for backward compatibility
 __all__ = [
     "FileType",
     "ProcessingMode",

backend-core/services/pdf_service.py

@@ -21,7 +21,6 @@ from jinja2 import Environment, FileSystemLoader, select_autoescape
 from weasyprint import HTML, CSS
 from weasyprint.text.fonts import FontConfiguration
 
-# Re-export models for backward compatibility
 from .pdf_models import (
     SchoolInfo,
     LetterData,