chore: anchor fresh-start history to upstream

tests/test_session_export_batch.py

@@ -0,0 +1,41 @@
+from hermes_state import SessionDB
+
+
+def test_export_all_batches_message_reads_without_changing_export_rows(tmp_path, monkeypatch):
+    db = SessionDB(tmp_path / "state.db")
+    try:
+        for index, source in enumerate(("cli", "telegram", "cli", "cli")):
+            session_id = f"session-{index}"
+            db.create_session(session_id=session_id, source=source)
+            db.append_messages_batch(
+                session_id,
+                [
+                    {"role": "user", "content": f"question {index}"},
+                    {
+                        "role": "assistant",
+                        "content": f"answer {index}",
+                        "tool_calls": [{"id": f"call-{index}", "type": "function"}],
+                    },
+                ],
+            )
+
+        sessions = db.search_sessions(source="cli", limit=100000)
+        expected = [
+            {**session, "messages": db.get_messages(session["id"])}
+            for session in sessions
+        ]
+
+        original_read_all = db._read_all
+        read_calls = 0
+
+        def counted_read_all(*args, **kwargs):
+            nonlocal read_calls
+            read_calls += 1
+            return original_read_all(*args, **kwargs)
+
+        monkeypatch.setattr(db, "_read_all", counted_read_all)
+
+        assert db.export_all(source="cli") == expected
+        assert read_calls <= 2
+    finally:
+        db.close()