feat: Add PWA support (manifest, service worker) and Companies tab to project edit

public/sw.js

@@ -0,0 +1,30 @@
+const CACHE_NAME = 'construprogress-cache-v1';
+const urlsToCache = [
+  '/',
+  '/dashboard',
+  '/projects',
+  '/projects-list',
+  '/projects/templates',
+  '/css/app.css',
+  '/js/app.js',
+  // Add other assets as needed
+];
+
+self.addEventListener('install', (event) => {
+  event.waitUntil(
+    caches.open(CACHE_NAME)
+      .then((cache) => cache.addAll(urlsToCache))
+  );
+});
+
+self.addEventListener('fetch', (event) => {
+  event.respondWith(
+    caches.match(event.request)
+      .then((response) => {
+        if (response) {
+          return response;
+        }
+        return fetch(event.request);
+      })
+  );
+});