Merge krystie-improvements into main

Resolves 24 conflicts between Hermes (DC-008/009/010 + response-helper
envelope standardization) and Krystie (DC-005 src/ refactor path fixes,
DC-006 TOTP integration, DC-007 new test suites, cloud backup
destinations).

Conflict resolutions:
- src/utils/logging.js:    took ours (consumers depend on logError/
                            safeErrorMessage/createLogger exports)
- src/config/site.js:      merged (her factored validateAndLogConfig +
                            applyConfigFields helpers)
- src/context/dns.js:      took hers (admin/readonly role iteration for
                            write operations)
- src/utilities/backup-
  manager.js:              took hers (Dropbox/WebDAV/SFTP cloud feature)
- status/dist/*, status/
  sw.js:                   took hers (minified bundles + newer SW cache)

Additional fix (post-merge regression):
- src/monitoring/health-checker.js: fixed DC-005 path miss —
  'require(./platform-paths)' → 'require(../../platform-paths)'

Test status: 921/922 passing. One known failure in logging.test.js
(async file-handle timing) tracked as follow-up.

dashcaddy-api/routes/workflows.js

@@ -1,4 +1,5 @@
 const express = require('express');
+const { ok } = require('../src/utils/responses');
 
 /**
  * Workflows routes factory
@@ -27,14 +28,14 @@ module.exports = function({ workflowEngine, licenseManager, asyncHandler, ok })
   router.post('/workflows/:workflowId/enable', asyncHandler(async (req, res) => {
     const { workflowId } = req.params;
     const result = workflowEngine.setWorkflowEnabled(workflowId, true);
-    ok(res, { ...result });
+    ok(res, result);
   }, 'workflows-enable'));
 
   // Disable a workflow
   router.post('/workflows/:workflowId/disable', asyncHandler(async (req, res) => {
     const { workflowId } = req.params;
     const result = workflowEngine.setWorkflowEnabled(workflowId, false);
-    ok(res, { ...result });
+    ok(res, result);
   }, 'workflows-disable'));
 
   // Manually trigger a workflow