Round 4 fixes: scheduler DB save check, empty validation_targets, proxy list page fallback, scheduler frontend state sync, tests

app/api/lifespan.py

@@ -41,7 +41,7 @@ async def lifespan(app: FastAPI):
             connect_timeout=app_settings.validator_connect_timeout,
             max_concurrency=db_settings.get("default_concurrency", app_settings.validator_max_concurrency),
         )
-        if db_settings.get("validation_targets"):
+        if db_settings.get("validation_targets") is not None:
             validator.update_test_urls(db_settings["validation_targets"])
 
         # 验证 WorkerPool

app/api/routes/scheduler.py

@@ -13,7 +13,9 @@ router = APIRouter(prefix="/api/scheduler", tags=["scheduler"])
 async def _save_auto_validate_setting(enabled: bool, settings_repo: SettingsRepository):
     """保存自动验证设置"""
     async with get_db() as db:
-        await settings_repo.save(db, {"auto_validate": enabled})
+        success = await settings_repo.save(db, {"auto_validate": enabled})
+    if not success:
+        raise RuntimeError("保存自动验证设置失败")
 
 
 @router.post("/start")

app/api/routes/settings.py

@@ -50,7 +50,7 @@ async def save_settings(
         validator._init_timeout = request.validation_timeout
         validator._init_connect_timeout = request.validation_timeout
         validator._init_max_concurrency = request.default_concurrency
-        if request.validation_targets:
+        if request.validation_targets is not None:
             validator.update_test_urls(request.validation_targets)
         # 先关闭现有 session，再重置 semaphore，避免竞态窗口
         await validator.close()