Document graph explorer adapter boundary

tests/test_graph_explorer.py

@@ -41,6 +41,7 @@ def test_graph_explorer_manifest_and_payload_validate() -> None:
 
     assert manifest["profile_persistence"] == "local"
     assert manifest["shareable_state"]["profile_id"] is True
+    assert set(manifest["filter"]["actions"]) >= {"show", "hide", "blur", "highlight", "remove"}
     assert {layer["id"] for layer in manifest["layers"]} >= {"server", "deployment"}
     filter_labels = {field["id"]: field["label"] for field in manifest["filter"]["fields"]}
     assert filter_labels["layer"] == "Node Type"
@@ -68,6 +69,7 @@ def test_graph_explorer_manifest_and_payload_validate() -> None:
     assert payload["metrics"]["server_node_count"] >= 1
     assert payload["metrics"]["registered_repo_count"] == 2
     assert payload["metrics"]["unresolved_count"] == 0
+    assert "removed nodes are removed" in payload["filter"]["connected_edge_behavior"]
 
 
 def test_cli_exports_graph_explorer_payload(capsys) -> None:
@@ -101,7 +103,10 @@ def test_graph_explorer_payload_accepts_repo_scoping_shape() -> None:
             "manual_overrides": {"feature:1": "show"},
         },
         "filter": {
-            "rules": [],
+            "rules": [
+                {"action": "highlight", "match": {"layer": "fact", "reviewState": "candidate"}},
+                {"action": "remove", "match": {"layer": "stale_fact"}},
+            ],
             "manual_overrides": {},
             "orphaned_overrides": [],
         },