feat(telegram): add chat session mode (#102)

tests/test_telegram_chat_sessions.py

@@ -0,0 +1,38 @@
+import pytest
+
+from takopi.model import ResumeToken
+from takopi.telegram.chat_sessions import ChatSessionStore
+
+
+@pytest.mark.anyio
+async def test_chat_sessions_store_roundtrip(tmp_path) -> None:
+    path = tmp_path / "telegram_chat_sessions_state.json"
+    store = ChatSessionStore(path)
+    await store.set_session_resume(1, None, ResumeToken(engine="codex", value="abc123"))
+    await store.set_session_resume(1, 42, ResumeToken(engine="claude", value="res-1"))
+
+    stored_private = await store.get_session_resume(1, None, "codex")
+    stored_group = await store.get_session_resume(1, 42, "claude")
+    assert stored_private == ResumeToken(engine="codex", value="abc123")
+    assert stored_group == ResumeToken(engine="claude", value="res-1")
+
+    store2 = ChatSessionStore(path)
+    stored_private_2 = await store2.get_session_resume(1, None, "codex")
+    stored_group_2 = await store2.get_session_resume(1, 42, "claude")
+    assert stored_private_2 == ResumeToken(engine="codex", value="abc123")
+    assert stored_group_2 == ResumeToken(engine="claude", value="res-1")
+
+
+@pytest.mark.anyio
+async def test_chat_sessions_store_clear(tmp_path) -> None:
+    path = tmp_path / "telegram_chat_sessions_state.json"
+    store = ChatSessionStore(path)
+    await store.set_session_resume(2, None, ResumeToken(engine="codex", value="one"))
+    await store.set_session_resume(2, 77, ResumeToken(engine="codex", value="two"))
+
+    await store.clear_sessions(2, None)
+    assert await store.get_session_resume(2, None, "codex") is None
+    assert await store.get_session_resume(2, 77, "codex") == ResumeToken(
+        engine="codex",
+        value="two",
+    )