fix: refresh optional CLI Apps catalogs

maintainer edit: CLI Apps settings now treats optional catalog caches as refresh candidates without blocking the initial payload, and pending polling stops when refresh is throttled instead of running indefinitely.

tests/cli_apps/test_service.py

@@ -286,6 +286,21 @@ def test_payload_cache_only_does_not_fetch_catalog(tmp_path: Path, monkeypatch:
     assert manager.catalog_cache_fresh() is True
 
 
+def test_catalog_cache_fresh_can_include_optional_sources(tmp_path: Path) -> None:
+    manager = _manager(tmp_path)
+    _write_cache(
+        manager._cache_path("harness"),
+        {"meta": {"updated": "2026-04-16"}, "clis": []},
+    )
+    _write_cache(
+        manager._cache_path("public"),
+        {"meta": {"updated": "2026-04-18"}, "clis": []},
+    )
+
+    assert manager.catalog_cache_fresh() is True
+    assert manager.catalog_cache_fresh(include_optional=True) is False
+
+
 def test_payload_cache_only_without_cache_returns_empty(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
     manager = _manager(tmp_path)