docs: declare institutional architecture boundary

src/govoplan_workflow/backend/manifest.py

@@ -10,6 +10,7 @@ from govoplan_core.core.modules import (
     NavItem,
     ViewSurface,
 )
+from govoplan_core.core.provider_governance import declared_module_architecture
 from govoplan_workflow_engine.backend.manifest import (
     ADMIN_SCOPE,
     DEFINITION_READ_SCOPE,
@@ -111,6 +112,17 @@ manifest = ModuleManifest(
             order=76,
         ),
     ),
+    architecture=declared_module_architecture(
+        layer="human_work_procedure",
+        kind="editor",
+        maturity="vertical_slice",
+        documentation_ref="docs/ENGINE_EDITOR_SPLIT.md",
+        test_ref="tests/test_manifest.py",
+        known_limits=("The editor intentionally cannot execute definitions without Workflow Engine and target-tested adapters.",),
+        owned_concepts=("workflow editing surface", "workflow revision inspection", "workflow activation controls"),
+        non_owned_concepts=("workflow definition persistence", "workflow instance execution", "domain action"),
+        security_docs=("docs/CONCEPT.md",),
+    ),
 )