v1.13.4: Standardize all route responses to use response helpers

Convert ~160 raw res.json()/res.status().json() calls across 32+ files
to use centralized helpers from src/utils/responses.js (ok, errorResponse,
successMessage, notFound, validationError, forbidden, unauthorized, conflict).

No behavior changes — response shapes are identical. Future schema changes
(e.g., requestId envelope) only need to update one module.

Fix error vs errorResponse signature mismatch in routes/health.js CA cert
endpoint where error(res, message, statusCode) was being called with
errorResponse(res, statusCode, message, extras) argument order.

Files changed: middleware.js, csrf-protection.js, error-handler.js,
license-manager.js, src/app.js, and 27 route files.

Test suite: 755 pass / 4 pre-existing failures (services credential tests).

dashcaddy-api/routes/apps/restore.js

@@ -2,6 +2,7 @@ const express = require('express');
 const path = require('path');
 const fs = require('fs');
 const { DOCKER } = require('../../constants');
+const { ok, validationError, notFound, errorResponse } = require('../../src/utils/responses');
 
 const DEFAULT_BACKUP_DIR = process.env.BACKUP_DIR || path.join(__dirname, '..', 'backups');
 
@@ -47,7 +48,7 @@ module.exports = function({ docker, caddy, servicesStateManager, asyncHandler, e
     }
 
     const result = await restoreService(service);
-    res.json({ success: true, result });
+    ok(res, { result });
   }, 'apps-restore'));
 
   /**
@@ -59,8 +60,7 @@ module.exports = function({ docker, caddy, servicesStateManager, asyncHandler, e
     const restoreable = services.filter(s => s.deploymentManifest);
 
     if (restoreable.length === 0) {
-      return res.json({
-        success: true,
+      return ok(res, {
         message: 'No services have deployment manifests to restore',
         results: []
       });
@@ -85,8 +85,7 @@ module.exports = function({ docker, caddy, servicesStateManager, asyncHandler, e
     const skipped = results.filter(r => r.status === 'skipped').length;
     const failed = results.filter(r => r.status === 'failed').length;
 
-    res.json({
-      success: true,
+    ok(res, {
       message: `Restore complete: ${succeeded} restored, ${skipped} skipped, ${failed} failed`,
       results
     });
@@ -123,7 +122,7 @@ module.exports = function({ docker, caddy, servicesStateManager, asyncHandler, e
       status.push(entry);
     }
 
-    res.json({ success: true, services: status });
+    ok(res, { services: status });
   }, 'apps-restore-status'));
 
   // ==================== POINT-IN-TIME RESTORE (BACKUP FILE BASED) ====================
@@ -174,8 +173,7 @@ module.exports = function({ docker, caddy, servicesStateManager, asyncHandler, e
     // Sort by timestamp descending (newest first)
     files.sort((a, b) => new Date(b.timestamp) - new Date(a.timestamp));
 
-    res.json({
-      success: true,
+    ok(res, {
       appId,
       isBackupFile: true,
       files,
@@ -190,12 +188,12 @@ module.exports = function({ docker, caddy, servicesStateManager, asyncHandler, e
 
     // Security: prevent path traversal
     if (filename.includes('..') || filename.includes('/') || filename.includes('\\')) {
-      return res.status(400).json({ success: false, error: 'Invalid filename' });
+      return validationError(res, 'Invalid filename');
     }
 
     const filepath = path.join(DEFAULT_BACKUP_DIR, filename);
     if (!fs.existsSync(filepath)) {
-      return res.status(404).json({ success: false, error: `Backup file not found: ${filename}` });
+      return notFound(res, `Backup file not found: ${filename}`);
     }
 
     try {
@@ -207,7 +205,7 @@ module.exports = function({ docker, caddy, servicesStateManager, asyncHandler, e
         try {
           fileData = await backupManager.decryptBackup(fileData, encryptionKey);
         } catch (err) {
-          return res.status(400).json({ success: false, error: 'Failed to decrypt backup: ' + err.message });
+          return validationError(res, 'Failed to decrypt backup: ' + err.message);
         }
       }
 
@@ -264,8 +262,7 @@ module.exports = function({ docker, caddy, servicesStateManager, asyncHandler, e
           // Cleanup temp dir
           fs.rmSync(tempDir, { recursive: true, force: true });
 
-          res.json({
-            success: true,
+          ok(res, {
             isBackupFile: true,
             restored: {
               services: !!restoreData.services,
@@ -277,8 +274,7 @@ module.exports = function({ docker, caddy, servicesStateManager, asyncHandler, e
         } else {
           // Preview mode
           fs.rmSync(tempDir, { recursive: true, force: true });
-          res.json({
-            success: true,
+          ok(res, {
             isBackupFile: true,
             preview: true,
             filename,
@@ -296,7 +292,7 @@ module.exports = function({ docker, caddy, servicesStateManager, asyncHandler, e
         throw err;
       }
     } catch (err) {
-      res.status(500).json({ success: false, error: err.message });
+      errorResponse(res, 500, err.message);
     }
   }, 'apps-revert'));