feat: BreakPilot PWA - Full codebase (clean push without large binaries)

All services: admin-v2, studio-v2, website, ai-compliance-sdk,
consent-service, klausur-service, voice-service, and infrastructure.
Large PDFs and compiled binaries excluded via .gitignore.

backend/auth/__init__.py

@@ -0,0 +1,55 @@
+"""
+BreakPilot Authentication Module
+
+Hybrid authentication supporting both Keycloak and local JWT tokens.
+"""
+
+from .keycloak_auth import (
+    # Config
+    KeycloakConfig,
+    KeycloakUser,
+
+    # Authenticators
+    KeycloakAuthenticator,
+    HybridAuthenticator,
+
+    # Exceptions
+    KeycloakAuthError,
+    TokenExpiredError,
+    TokenInvalidError,
+    KeycloakConfigError,
+
+    # Factory functions
+    get_keycloak_config_from_env,
+    get_authenticator,
+    get_auth,
+
+    # FastAPI dependencies
+    get_current_user,
+    require_role,
+)
+
+__all__ = [
+    # Config
+    "KeycloakConfig",
+    "KeycloakUser",
+
+    # Authenticators
+    "KeycloakAuthenticator",
+    "HybridAuthenticator",
+
+    # Exceptions
+    "KeycloakAuthError",
+    "TokenExpiredError",
+    "TokenInvalidError",
+    "KeycloakConfigError",
+
+    # Factory functions
+    "get_keycloak_config_from_env",
+    "get_authenticator",
+    "get_auth",
+
+    # FastAPI dependencies
+    "get_current_user",
+    "require_role",
+]