fix: address all 17 PR review comments

Resolves review threads:
- PRRT_kwDOO6Hdxs50fewG (setup.py): non-eliciting clients now return True
  from elicit_reset_confirmation so they can reconfigure without being blocked
- PRRT_kwDOO6Hdxs50fewM (test-tools.sh): add notification/recalculate smoke test
- PRRT_kwDOO6Hdxs50fewP (test-tools.sh): add system/array smoke test
- PRRT_kwDOO6Hdxs50fewT (resources.py): surface manager error state instead of
  reporting 'connecting' for permanently failed subscriptions
- PRRT_kwDOO6Hdxs50feAj (resources.py): use is not None check for empty cached dicts
- PRRT_kwDOO6Hdxs50fewY (integration tests): remove duplicate snapshot-registration
  tests already covered in test_resources.py
- PRRT_kwDOO6Hdxs50fewe (test_resources.py): replace brittle import-detail test
  with behavior tests for connecting/error states
- PRRT_kwDOO6Hdxs50fewh (test_customization.py): strengthen public_theme assertion
- PRRT_kwDOO6Hdxs50fewk (test_customization.py): strengthen theme assertion
- PRRT_kwDOO6Hdxs50fewo (__init__.py): correct subaction count ~88 -> ~107
- PRRT_kwDOO6Hdxs50fewx (test_oidc.py): assert providers list value directly
- PRRT_kwDOO6Hdxs50fewz (unraid.py): remove unreachable raise after vm handler
- PRRT_kwDOO6Hdxs50few2 (unraid.py): remove unreachable raise after docker handler
- PRRT_kwDOO6Hdxs50fev8 (CLAUDE.md): replace legacy 15-tool table with unified
  unraid action/subaction table
- PRRT_kwDOO6Hdxs50fev_ (test_oidc.py): assert providers + defaultAllowedOrigins
- PRRT_kwDOO6Hdxs50feAz (CLAUDE.md): update tool categories to unified API shape
- PRRT_kwDOO6Hdxs50feBE (CLAUDE.md/setup.py): update unraid_health refs to
  unraid(action=health, subaction=setup)

tests/test_notifications.py

@@ -122,12 +122,14 @@ class TestNotificationsActions:
         result = await tool_fn(action="notification", subaction="archive_all")
         assert result["success"] is True
 
-    async def test_unread_notification(self, _mock_graphql: AsyncMock) -> None:
+    async def test_mark_unread_notification(self, _mock_graphql: AsyncMock) -> None:
         _mock_graphql.return_value = {"unreadNotification": {"id": "n:1"}}
         tool_fn = _make_tool()
-        result = await tool_fn(action="notification", subaction="unread", notification_id="n:1")
+        result = await tool_fn(
+            action="notification", subaction="mark_unread", notification_id="n:1"
+        )
         assert result["success"] is True
-        assert result["subaction"] == "unread"
+        assert result["subaction"] == "mark_unread"
 
     async def test_list_with_importance_filter(self, _mock_graphql: AsyncMock) -> None:
         _mock_graphql.return_value = {