style: ruff format + stronger sqlite asserts (delete utils, drop test_no_gng)

tests/test_store_memory.py

@@ -1,5 +1,6 @@
 from agentmsgs.stores.memory import InMemoryStore
 
+
 def test_memory_create_and_find_thread():
     s = InMemoryStore()
     alice = s.get_or_create_agent("Alice")
@@ -10,12 +11,14 @@ def test_memory_create_and_find_thread():
     assert t in s.find_threads({alice, bob})
     assert s.find_threads({alice, bob, s.get_or_create_agent("Charlie")}) == []
 
+
 def test_memory_soft_unique_name():
     s = InMemoryStore()
     a1 = s.get_or_create_agent("Alice")
     a2 = s.get_or_create_agent("Alice")
     assert a1.id == a2.id
 
+
 def test_memory_delete_account():
     s = InMemoryStore()
     a = s.get_or_create_agent("Alice")
@@ -23,10 +26,12 @@ def test_memory_delete_account():
     assert s.get_agent_by_id(a.id) is None
     assert s.get_agent_by_name("Alice") is None
 
+
 def test_memory_append_and_list():
     s = InMemoryStore()
-    a = s.get_or_create_agent("A"); b = s.get_or_create_agent("B")
-    t = s.create_thread({a,b})
+    a = s.get_or_create_agent("A")
+    b = s.get_or_create_agent("B")
+    t = s.create_thread({a, b})
     m1 = s.append_message(t.id, a, "hi")
     m2 = s.append_message(t.id, b, "yo")
     assert m1.seq == 1 and m2.seq == 2