refactor: add _service suffix for naming consistency

app/api/routes/admin/system_settings.py

@@ -13,7 +13,7 @@
     SettingUpdateResponse,
 )
 from app.schemas.user_activity import ActivityType, ResourceType
-from app.services.system_settings import (
+from app.services.system_settings_service import (
     list_all_settings_service,
     update_setting_service,
 )

app/api/routes/announcements.py

@@ -2,7 +2,7 @@
 
 from app.api.deps import CurrentActiveUser, SessionDep
 from app.schemas.announcement import ActiveBannerResponse
-from app.services.announcement import get_active_banner_service
+from app.services.announcement_service import get_active_banner_service
 
 router = APIRouter()
 

app/api/routes/system_settings.py

@@ -3,7 +3,7 @@
 from app.api.deps import SessionDep
 from app.core.rate_limit import rate_limit_public
 from app.schemas.system_settings import PublicSettingsResponse
-from app.services.system_settings import get_public_settings_service
+from app.services.system_settings_service import get_public_settings_service
 
 router = APIRouter()