Round 3 fixes: cancelled polling, aggregator invalid_count, filter state, scheduler atomicity, HTTP exception handler, tests

app/api/deps.py

@@ -5,6 +5,7 @@ from app.services.plugin_service import PluginService
 from app.services.scheduler_service import SchedulerService
 from app.services.plugin_runner import PluginRunner
 from app.core.execution import JobExecutor, AsyncWorkerPool
+from app.repositories.settings_repo import SettingsRepository
 
 
 def get_proxy_service() -> ProxyService:
@@ -15,6 +16,10 @@ def get_plugin_service() -> PluginService:
     return PluginService()
 
 
+def get_settings_repo() -> SettingsRepository:
+    return SettingsRepository()
+
+
 def get_scheduler_service(request: Request) -> SchedulerService:
     return request.app.state.scheduler