fix(test): 修复完全模拟赛马测试的并发与超时问题

- 将锁获取改为带超时的等待，避免因锁占用导致测试卡死
- 增加模拟任务的超时控制，防止无限等待
- 添加异常捕获与详细错误信息输出，便于问题定位
- 确保在测试异常或超时后正确清理资源

danding_bot/plugins/group_horse_racing/test_commands.py

@@ -8,6 +8,7 @@ from .models import Horse, HorseState, RoomState, Bet, RaceResult
 import asyncio
 import random
 from datetime import datetime
+import traceback
 
 from . import commands as commands_mod
 
@@ -205,10 +206,17 @@ async def handle_test_simulate_race(bot: Bot, event: Event):
 
     scope = get_scope(event)
     lock = room_store.get_lock(scope)
+    try:
+        await asyncio.wait_for(lock.acquire(), timeout=3)
+    except TimeoutError:
+        await test_simulate_race_cmd.finish("完全模拟失败：房间锁被占用（可能有卡住的赛马/测试任务），请稍后重试或先重启 Bot")
+        return
 
-    async with lock:
+    try:
         race_engine.stop_race(scope)
         room_store.delete_room(scope)
+    finally:
+        lock.release()
 
     original_room_store = commands_mod.room_store
     original_points_service = commands_mod.points_service
@@ -220,6 +228,9 @@ async def handle_test_simulate_race(bot: Bot, event: Event):
     fake_message_service = _NoopMessageService()
     fake_bot = _FakeBot()
 
+    start_task: asyncio.Task | None = None
+    room = None
+
     try:
         commands_mod.room_store = fake_room_store
         commands_mod.points_service = fake_points_service
@@ -243,7 +254,7 @@ async def handle_test_simulate_race(bot: Bot, event: Event):
 
         start_task = asyncio.create_task(commands_mod.run_race_with_settlement(fake_bot, room, scope))
         commands_mod.race_engine.register_task(scope, start_task)
-            await start_task
+        await asyncio.wait_for(start_task, timeout=15)
 
         messages = [m.get("message", "") for m in fake_bot.messages]
         if not messages:
@@ -295,7 +306,15 @@ async def handle_test_simulate_race(bot: Bot, event: Event):
                 ]
             )
         )
+    except asyncio.TimeoutError:
+        ticks = room.tick_count if room else 0
+        await test_simulate_race_cmd.finish(f"完全模拟失败：超时未完成（当前回合：{ticks}）")
+    except Exception as e:
+        tail = "\n".join(traceback.format_exc().splitlines()[-8:])
+        await test_simulate_race_cmd.finish(f"完全模拟异常：{type(e).__name__}: {e}\n{tail}")
     finally:
+        if start_task and not start_task.done():
+            start_task.cancel()
         commands_mod.room_store = original_room_store
         commands_mod.points_service = original_points_service
         commands_mod.message_service = original_message_service