feat: resolve memory middleware dir per-call from configurable

tests/test_profile_memory_middleware.py

@@ -417,9 +417,9 @@ async def test_profile_memory_async_path_inlines_content_under_blockbuster(
     call_threads = []
     original_read = middleware._read_profile_memory
 
-    def tracked_read_profile_memory():
+    def tracked_read_profile_memory(memory_dir=None):
         call_threads.append(threading.get_ident())
-        return original_read()
+        return original_read(memory_dir)
 
     monkeypatch.setattr(middleware, "_read_profile_memory", tracked_read_profile_memory)
 
@@ -625,3 +625,23 @@ def test_profile_memory_skips_legacy_unknown_placeholders(tmp_path, monkeypatch)
     assert "(unknown)" not in migrated_profile_text
     assert "Imported from legacy MEMORY.md" not in migrated_profile_text
     assert not (memories / "MEMORY.md").exists()
+
+
+def test_read_profile_memory_honors_memory_dir_override(tmp_path, monkeypatch):
+    from EvoScientist import paths
+
+    global_mem = tmp_path / "global"
+    user_mem = tmp_path / "user"
+    workspace = tmp_path / "workspace"
+    workspace.mkdir()
+    monkeypatch.setattr(paths, "WORKSPACE_ROOT", workspace)
+
+    middleware = memory_module.create_memory_middleware(str(global_mem))
+    middleware.modify_request(_request())  # bootstrap global
+    (user_mem / "profile").mkdir(parents=True)
+    (user_mem / "profile" / "USER_PROFILE.md").write_text(
+        "# User profile\n\nper-user marker", encoding="utf-8"
+    )
+
+    content = middleware._read_profile_memory(memory_dir=user_mem)
+    assert "per-user marker" in content