DC-005: Fix all 138 broken test paths after src/ refactor

After the DC-005 module reorganization (41 files moved into src/ subdirs),
138 test suites failed because the refactor script's path-rewrite logic
missed three categories:

1. Files inside src/ doing 'require("./src/...")' — should be 'require("../...")'
2. Files in src/X/Y/ doing 'require("../../../src/...")' — should be 'require("../../...")'
3. Test files in __tests__/ with leftover 'require("../../../src/...")' paths

Root cause: the original refactor script ran before all files were moved,
so it computed relative paths against stale filesystem state.

Result:
- 30/30 test suites pass
- 879/879 tests pass (was: 18/30 suites, 614/687 tests)

Also fixed:
- routes/apps/restore.js: wrong responses import path
- routes/*/*.js: '../../src/utilities/X' → '../src/utilities/X' (depth 2 routes)

dashcaddy-api/__tests__/routes/health.routes.test.js

@@ -52,21 +52,21 @@ jest.mock('../../platform-paths', () => ({
 }));
 
 // Mock fs-helpers.exists
-jest.mock('../../fs-helpers', () => ({
+jest.mock('../../src/utilities/fs-helpers', () => ({
   exists: jest.fn().mockResolvedValue(true),
 }));
 
-jest.mock('../../url-resolver', () => ({
+jest.mock('../../src/utilities/url-resolver', () => ({
   resolveServiceUrl: jest.fn((id) => `https://${id}.test`),
 }));
 
-jest.mock('../../pagination', () => ({
+jest.mock('../../src/utilities/pagination', () => ({
   paginate: jest.fn((data, params) => ({ data, pagination: null })),
   parsePaginationParams: jest.fn(() => null),
 }));
 
-const { exists } = require('../../fs-helpers');
-const { resolveServiceUrl } = require('../../url-resolver');
+const { exists } = require('../../src/utilities/fs-helpers');
+const { resolveServiceUrl } = require('../../src/utilities/url-resolver');
 const { execSync } = require('child_process');
 
 describe('Health Routes', () => {