Backend fabric extension

src/markitect_tool/__init__.py

@@ -32,6 +32,28 @@ from markitect_tool.cache import (
     save_cache,
     scan_markdown_files,
 )
+from markitect_tool.backend import (
+    BACKEND_CAPABILITIES,
+    DEFAULT_BACKEND_PATHS,
+    AccessPolicyGateway,
+    BackendCapabilityCheck,
+    BackendManifest,
+    BackendRegistry,
+    BackendRegistryError,
+    ContextPackageRegistry,
+    DependencyEdge,
+    DocumentSnapshot,
+    IndexBackend,
+    ProcessorResultStore,
+    ProvenanceEnvelope,
+    QueryAdapter,
+    SnapshotBackend,
+    SnapshotIdentity,
+    capability_check,
+    load_backend_manifest,
+    load_backend_registry,
+    snapshot_identity_for_file,
+)
 from markitect_tool.content_class import (
     ClassCompositionResult,
     ContentClass,
@@ -162,6 +184,26 @@ __all__ = [
     "load_cache",
     "save_cache",
     "scan_markdown_files",
+    "BACKEND_CAPABILITIES",
+    "DEFAULT_BACKEND_PATHS",
+    "AccessPolicyGateway",
+    "BackendCapabilityCheck",
+    "BackendManifest",
+    "BackendRegistry",
+    "BackendRegistryError",
+    "ContextPackageRegistry",
+    "DependencyEdge",
+    "DocumentSnapshot",
+    "IndexBackend",
+    "ProcessorResultStore",
+    "ProvenanceEnvelope",
+    "QueryAdapter",
+    "SnapshotBackend",
+    "SnapshotIdentity",
+    "capability_check",
+    "load_backend_manifest",
+    "load_backend_registry",
+    "snapshot_identity_for_file",
     "ClassCompositionResult",
     "ContentClass",
     "ContentClassRegistry",