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/schema/test_query_validation.py

@@ -522,11 +522,11 @@ class TestNotificationMutations:
         errors = _validate_operation(schema, MUTATIONS["archive"])
         assert not errors, f"archive mutation validation failed: {errors}"
 
-    def test_unread_mutation(self, schema: GraphQLSchema) -> None:
+    def test_mark_unread_mutation(self, schema: GraphQLSchema) -> None:
         from unraid_mcp.tools.unraid import _NOTIFICATION_MUTATIONS as MUTATIONS
 
-        errors = _validate_operation(schema, MUTATIONS["unread"])
-        assert not errors, f"unread mutation validation failed: {errors}"
+        errors = _validate_operation(schema, MUTATIONS["mark_unread"])
+        assert not errors, f"mark_unread mutation validation failed: {errors}"
 
     def test_delete_mutation(self, schema: GraphQLSchema) -> None:
         from unraid_mcp.tools.unraid import _NOTIFICATION_MUTATIONS as MUTATIONS
@@ -576,7 +576,7 @@ class TestNotificationMutations:
         expected = {
             "create",
             "archive",
-            "unread",
+            "mark_unread",
             "delete",
             "delete_archived",
             "archive_all",