SQLStorageBackend -> StorageBackend

src/pyfed/storage/__init__.py

@@ -7,7 +7,7 @@
 # - Storage provider protocol
 # """
 
-from .base import SQLStorageBackend
+from .base import StorageBackend
 # from .backends.postgresql import PostgreSQLStorage
 # from .backends.mongodb import MongoDBStorageBackend
 # from .backends.redis import RedisStorageBackend
@@ -33,7 +33,7 @@ from .base import SQLStorageBackend
 #     'sqlite': SQLiteStorage
 # }
 
-def get_storage_backend(backend_type: str) -> type[SQLStorageBackend]:
+def get_storage_backend(backend_type: str) -> type[StorageBackend]:
     """Get storage backend class by type."""
     if backend_type not in STORAGE_BACKENDS:
         raise ValueError(f"Unknown storage backend: {backend_type}")
@@ -41,4 +41,4 @@ def get_storage_backend(backend_type: str) -> type[SQLStorageBackend]:
 
 # def register_backend(name: str, backend_class: type[StorageBackend]) -> None:
 #     """Register a new storage backend."""
-#     STORAGE_BACKENDS[name] = backend_class 
+#     STORAGE_BACKENDS[name] = backend_class 
\ No newline at end of file

src/pyfed/utils/exceptions.py

@@ -142,4 +142,8 @@ class IntegrationError(ActivityPubException):
 
 class MiddlewareError(ActivityPubException):
     """Raised when middleware-related errors occur."""
-    pass
+    pass
\ No newline at end of file
+
+class ConfigError(ActivityPubException):
+    """Raised when signature-related errors occur."""
+    pass