feat: Add npm dependencies and update vendor paths

- Add package.json dependencies: jquery, jquery-ui, moment, daterangepicker, wavesurfer.js, air-datepicker
- Create scripts/setup-vendor.js to copy npm packages to public/assets/vendor
- Update view templates to use vendor paths instead of old /js/ or CDN URLs
- Clean up legacy commented-out scripts in master layout

package-lock.json

@@ -1,9 +1,10 @@
 {
-  "name": "nhgooi.nl",
+  "name": "workspace",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
+      "hasInstallScript": true,
       "devDependencies": {
         "grunt": "^1.6.1",
         "grunt-contrib-concat": "^2.1.0",