cli to control zed camera start and stop. 2. measure now use every svo2 file for 1 fish, give intermideate result and final result with confidecne level(*).

fish_api/app/services/action_watch.py

@@ -2,10 +2,12 @@ from __future__ import annotations
 
 import asyncio
 from pathlib import Path
-from typing import Dict, Set
+from typing import Dict, List, Set, Tuple
 
 from loguru import logger
 
+from app.compat import to_thread
+
 from app.db import (
     add_watch_processed,
     health_snapshot_deliverable,
@@ -28,7 +30,7 @@ def _state_path(settings: Settings) -> Path:
     return settings.action_watch_dir / ".fishaction_watch_processed.json"
 
 
-def iter_mp4(watch_dir: Path, recursive: bool) -> list[Path]:
+def iter_mp4(watch_dir: Path, recursive: bool) -> List[Path]:
     if recursive:
         return sorted(
             p
@@ -56,7 +58,7 @@ async def _run_inference_and_state(
         app_state.action_status = "running"
         try:
             # 返回 (第一个快照, 所有切片快照列表)
-            first_snap, all_snaps = await asyncio.to_thread(
+            first_snap, all_snaps = await to_thread(
                 action_svc.run_full_action, mp4, settings
             )
 
@@ -98,7 +100,7 @@ async def _run_inference_and_state(
 async def watch_tick(
     settings: Settings,
     processed: Set[str],
-    stability: Dict[str, tuple[int, int]],
+    stability: Dict[str, Tuple[int, int]],
     state_file: Path,
 ) -> bool:
     """处理一轮目录扫描；若处理了至少一个文件返回 True。"""
@@ -149,7 +151,7 @@ async def run_action_watch_loop(settings: Settings) -> None:
         if settings.action_watch_use_state_file
         else set()
     )
-    stability: Dict[str, tuple[int, int]] = {}
+    stability = {}  # type: Dict[str, Tuple[int, int]]
 
     logger.info(
         "[action-watch] watching {} (poll={}s, stable_polls={}, state={} {})",