Feat/hidden domain (#113)

Summary
新增秘境探索，属于多人活动，每N年触发一次
Closes #105

tests/conftest.py

@@ -117,7 +117,7 @@ def dummy_avatar(base_world):
     
     return av
 
-@pytest.fixture
+@pytest.fixture(autouse=True)
 def mock_llm_managers():
     """
     Mock 所有涉及 LLM 调用的管理器和函数，防止测试中意外调用 LLM。
@@ -134,6 +134,7 @@ def mock_llm_managers():
          patch("src.classes.relation_resolver.RelationResolver.run_batch", new_callable=AsyncMock) as mock_rr, \
          patch("src.classes.history.HistoryManager.apply_history_influence", new_callable=AsyncMock) as mock_hist, \
          patch("src.classes.story_teller.StoryTeller.tell_story", new_callable=AsyncMock) as mock_story, \
+         patch("src.classes.story_teller.StoryTeller.tell_gathering_story", new_callable=AsyncMock) as mock_gathering_story, \
          patch("src.utils.llm.config.LLMConfig.from_mode", return_value=mock_llm_config) as mock_config:
         
         mock_ai.decide = AsyncMock(return_value={})
@@ -142,6 +143,7 @@ def mock_llm_managers():
         mock_rr.return_value = []
         mock_hist.return_value = None
         mock_story.return_value = "测试故事"
+        mock_gathering_story.return_value = "秘境测试故事"
 
         yield {
             "ai": mock_ai,
@@ -150,6 +152,7 @@ def mock_llm_managers():
             "rr": mock_rr,
             "hist": mock_hist,
             "story": mock_story,
+            "gathering_story": mock_gathering_story,
             "config": mock_config
         }