Decouple scopes from tenancy schema

src/govoplan_core/auth/__init__.py

@@ -0,0 +1,18 @@
+from __future__ import annotations
+
+"""Core auth dependency facade.
+
+Routers depend on this module instead of a concrete access-provider package.
+The current implementation delegates to the access module; replacing this
+facade is the remaining step toward a fully provider-neutral auth kernel.
+"""
+
+from govoplan_access.auth import ApiPrincipal, get_api_principal, has_scope, require_any_scope, require_scope
+
+__all__ = [
+    "ApiPrincipal",
+    "get_api_principal",
+    "has_scope",
+    "require_any_scope",
+    "require_scope",
+]