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/session/__init__.py

@@ -0,0 +1,52 @@
+"""
+Session Management Module for BreakPilot
+
+Hybrid session storage using Valkey (Redis-fork) for fast lookups
+and PostgreSQL for persistence and DSGVO audit trail.
+
+Components:
+- session_store.py: Hybrid Valkey + PostgreSQL session storage
+- session_middleware.py: FastAPI middleware for session-based auth
+- rbac_middleware.py: User type and permission checking
+"""
+
+from .session_store import (
+    SessionStore,
+    Session,
+    UserType,
+    get_session_store,
+)
+from .session_middleware import (
+    get_current_session,
+    require_session,
+    session_middleware,
+)
+from .rbac_middleware import (
+    require_user_type,
+    require_permission,
+    require_any_permission,
+    require_employee,
+    require_customer,
+    EMPLOYEE_PERMISSIONS,
+    CUSTOMER_PERMISSIONS,
+)
+
+__all__ = [
+    # Session Store
+    "SessionStore",
+    "Session",
+    "UserType",
+    "get_session_store",
+    # Session Middleware
+    "get_current_session",
+    "require_session",
+    "session_middleware",
+    # RBAC Middleware
+    "require_user_type",
+    "require_permission",
+    "require_any_permission",
+    "require_employee",
+    "require_customer",
+    "EMPLOYEE_PERMISSIONS",
+    "CUSTOMER_PERMISSIONS",
+]