feat: add letta-style memory tools with request/user debug tracing

tests/test_memory_middleware.py

@@ -229,6 +229,40 @@ async def test_update_core_upsert(db_session, user_with_key):
     assert _dec(rows[0].value_encrypted) == "fr"
 
 
+@pytest.mark.asyncio
+async def test_core_block_edit_ops(db_session, user_with_key):
+    middleware = MemoryMiddleware(db_session)
+
+    await middleware.update_core(USER_ID, "human", "Name: Roberto")
+    await middleware.append_core(USER_ID, "human", "Timezone: Europe/Rome")
+    replaced = await middleware.replace_core(USER_ID, "human", "Roberto", "Robert")
+
+    blocks = await middleware.list_core_blocks(USER_ID)
+    human = next(b for b in blocks if b["label"] == "human")
+
+    assert replaced is True
+    assert "Name: Robert" in human["value"]
+    assert "Timezone: Europe/Rome" in human["value"]
+
+    deleted = await middleware.delete_core(USER_ID, "human")
+    assert deleted is True
+    assert await middleware.get_core_block(USER_ID, "human") is None
+
+
+@pytest.mark.asyncio
+async def test_archival_and_recall_search_helpers(db_session, user_with_key):
+    middleware = MemoryMiddleware(db_session)
+
+    await middleware.insert_archival(USER_ID, "Project whitelist has release risk", source="assistant")
+    await middleware.store_episode(USER_ID, str(uuid.uuid4()), "How is whitelist?", "Whitelist is delayed")
+
+    arch = await middleware.search_archival(USER_ID, "whitelist", top_k=3)
+    rec = await middleware.search_recall(USER_ID, "delayed", top_k=3)
+
+    assert any("whitelist" in item.lower() for item in arch)
+    assert any("delayed" in item.lower() for item in rec)
+
+
 # ── End-to-end WS: memory middleware is called during home_request ────────────
 
 def test_home_request_calls_memory_middleware(client):