test: bring coverage to 85%, set threshold to 85, reset version to 3.0.11

- Add tests for config, convo_miner, spellcheck, knowledge_graph
- Fix Windows PermissionError in test cleanup (chromadb file locks)
- Add UTF-8 encoding to split_mega_files, entity_registry, hooks_cli
- Fix mcp_server parse_known_args logging for unknown args
- Set coverage threshold to 85 in pyproject.toml and CI
- Reset all version files to 3.0.11

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/test_knowledge_graph_extra.py

@@ -0,0 +1,105 @@
+"""Extra knowledge graph tests for seed_from_entity_facts and query_relationship."""
+
+import pytest
+
+from mempalace.knowledge_graph import KnowledgeGraph
+
+
+@pytest.fixture
+def kg(tmp_path):
+    return KnowledgeGraph(db_path=str(tmp_path / "kg.db"))
+
+
+class TestSeedFromEntityFacts:
+    def test_seed_person_with_partner(self, kg):
+        facts = {
+            "alice": {
+                "full_name": "Alice Smith",
+                "type": "person",
+                "gender": "female",
+                "partner": "bob",
+                "relationship": "husband",
+            }
+        }
+        kg.seed_from_entity_facts(facts)
+        stats = kg.stats()
+        assert stats["entities"] >= 1
+        results = kg.query_entity("Alice Smith", direction="outgoing")
+        predicates = {r["predicate"] for r in results}
+        assert "married_to" in predicates
+        assert "is_partner_of" in predicates
+
+    def test_seed_child(self, kg):
+        facts = {
+            "max": {
+                "full_name": "Max",
+                "type": "person",
+                "birthday": "2015-04-01",
+                "parent": "alice",
+                "relationship": "daughter",
+            }
+        }
+        kg.seed_from_entity_facts(facts)
+        results = kg.query_entity("Max", direction="outgoing")
+        predicates = {r["predicate"] for r in results}
+        assert "child_of" in predicates
+        assert "is_child_of" in predicates
+
+    def test_seed_sibling(self, kg):
+        facts = {
+            "emma": {
+                "full_name": "Emma",
+                "type": "person",
+                "relationship": "brother",
+                "sibling": "max",
+            }
+        }
+        kg.seed_from_entity_facts(facts)
+        results = kg.query_entity("Emma", direction="outgoing")
+        predicates = {r["predicate"] for r in results}
+        assert "is_sibling_of" in predicates
+
+    def test_seed_dog(self, kg):
+        facts = {
+            "rex": {
+                "full_name": "Rex",
+                "type": "animal",
+                "relationship": "dog",
+                "owner": "alice",
+            }
+        }
+        kg.seed_from_entity_facts(facts)
+        results = kg.query_entity("Rex", direction="outgoing")
+        predicates = {r["predicate"] for r in results}
+        assert "is_pet_of" in predicates
+
+    def test_seed_with_interests(self, kg):
+        facts = {
+            "max": {
+                "full_name": "Max",
+                "type": "person",
+                "interests": ["swimming", "chess"],
+            }
+        }
+        kg.seed_from_entity_facts(facts)
+        results = kg.query_entity("Max", direction="outgoing")
+        objects = {r["object"] for r in results if r["predicate"] == "loves"}
+        assert "Swimming" in objects
+        assert "Chess" in objects
+
+    def test_seed_minimal_facts(self, kg):
+        """Facts with no relationships just create entities."""
+        facts = {"bob": {"full_name": "Bob"}}
+        kg.seed_from_entity_facts(facts)
+        stats = kg.stats()
+        assert stats["entities"] >= 1
+
+
+class TestQueryRelationshipWithTime:
+    def test_query_relationship_with_as_of(self, kg):
+        kg.add_triple("Alice", "works_at", "Acme", valid_from="2020-01-01", valid_to="2024-12-31")
+        kg.add_triple("Alice", "works_at", "NewCo", valid_from="2025-01-01")
+        results = kg.query_relationship("works_at", as_of="2023-06-01")
+        objects = [r["object"] for r in results]
+        assert "Acme" in objects
+        assert "NewCo" not in objects