feat: telegram forum topics support (#80)

tests/test_telegram_topic_state.py

@@ -0,0 +1,49 @@
+import pytest
+
+from takopi.context import RunContext
+from takopi.model import ResumeToken
+from takopi.telegram.topic_state import TopicStateStore
+
+
+@pytest.mark.anyio
+async def test_topic_state_store_roundtrip(tmp_path) -> None:
+    path = tmp_path / "telegram_topics_state.json"
+    store = TopicStateStore(path)
+    context = RunContext(project="proj", branch="feat/topic")
+    await store.set_context(1, 10, context)
+    await store.set_session_resume(1, 10, ResumeToken(engine="codex", value="abc123"))
+
+    snapshot = await store.get_thread(1, 10)
+    assert snapshot is not None
+    assert snapshot.context == context
+    assert snapshot.sessions == {"codex": "abc123"}
+
+    store2 = TopicStateStore(path)
+    snapshot2 = await store2.get_thread(1, 10)
+    assert snapshot2 is not None
+    assert snapshot2.context == context
+    assert snapshot2.sessions == {"codex": "abc123"}
+
+
+@pytest.mark.anyio
+async def test_topic_state_store_clear_and_find(tmp_path) -> None:
+    path = tmp_path / "telegram_topics_state.json"
+    store = TopicStateStore(path)
+    context = RunContext(project="proj", branch="main")
+    await store.set_context(2, 20, context)
+    await store.set_session_resume(
+        2, 20, ResumeToken(engine="claude", value="resume-token")
+    )
+
+    found = await store.find_thread_for_context(2, context)
+    assert found == 20
+
+    await store.clear_sessions(2, 20)
+    snapshot = await store.get_thread(2, 20)
+    assert snapshot is not None
+    assert snapshot.sessions == {}
+
+    await store.clear_context(2, 20)
+    snapshot = await store.get_thread(2, 20)
+    assert snapshot is not None
+    assert snapshot.context is None