Add complete project structure and all files

backend/app/rbac/__init__.py

@@ -0,0 +1,78 @@
+"""
+RBAC Module - Role-Based Access Control
+Provides atomic permission model with resource:action:scope format
+"""
+
+from .permissions import (
+    Permission, 
+    PermissionRegistry, 
+    PERMISSIONS,
+    ScopeType,
+    ResourceType,
+    ActionType,
+    LEGACY_PERMISSION_MAP,
+    resolve_permission,
+    get_permission_info
+)
+from .engine import (
+    PermissionEngine, 
+    require_permission, 
+    check_permission,
+    get_user_permissions
+)
+from .middleware import (
+    PermissionChecker, 
+    ScopedPermissionChecker,
+    ResourceAccessChecker
+)
+from .decorators import (
+    requires_permission, 
+    requires_any_permission,
+    requires_all_permissions
+)
+from .audit import RBACAuditService
+from .migration import (
+    convert_permissions_to_new_format,
+    convert_permissions_to_legacy_format,
+    get_permission_categories,
+    get_permission_categories_legacy,
+    migrate_all_roles_to_new_format,
+    ensure_default_roles_new_format,
+    NEW_DEFAULT_ROLES
+)
+
+__all__ = [
+    # Permissions
+    "Permission",
+    "PermissionRegistry", 
+    "PERMISSIONS",
+    "ScopeType",
+    "ResourceType",
+    "ActionType",
+    "LEGACY_PERMISSION_MAP",
+    "resolve_permission",
+    "get_permission_info",
+    # Engine
+    "PermissionEngine",
+    "require_permission",
+    "check_permission",
+    "get_user_permissions",
+    # Middleware
+    "PermissionChecker",
+    "ScopedPermissionChecker",
+    "ResourceAccessChecker",
+    # Decorators
+    "requires_permission",
+    "requires_any_permission",
+    "requires_all_permissions",
+    # Audit
+    "RBACAuditService",
+    # Migration
+    "convert_permissions_to_new_format",
+    "convert_permissions_to_legacy_format",
+    "get_permission_categories",
+    "get_permission_categories_legacy",
+    "migrate_all_roles_to_new_format",
+    "ensure_default_roles_new_format",
+    "NEW_DEFAULT_ROLES",
+]