Refactor code structure for improved readability and maintainability

.vscode/launch.json

@@ -11,7 +11,10 @@
         "FLASK_APP": "backend/main.py",
         "FLASK_DEBUG": "1",
         "SECRET_KEY": "dev-secret-key-change-in-production",
-        "REFRESH_TOKEN_EXPIRY_DAYS": "90"
+        "REFRESH_TOKEN_EXPIRY_DAYS": "90",
+        "DIGEST_TOKEN_SECRET": "dev-digest-token",
+        "VAPID_PUBLIC_KEY": "BNKkHdq45uLigohSG7c1TwlAo7ETncoRVLQK02LxHgu2P1DgSJD9njRMfbbzUsaTQGllvLBz7An1WiWsNYQhvKE",
+        "VAPID_PRIVATE_KEY": "jNiZJT0UO4H861KmnCt874Fg6p5jDAyYKS4V2MZf8bQ"
       },
       "args": [
         "run",

frontend/vue-app/192.168.1.102+1-key.pem

@@ -1,28 +1,28 @@
 -----BEGIN PRIVATE KEY-----
-MIIEvAIBADANBgkqhkiG9w0BAQEFAASCBKYwggSiAgEAAoIBAQCu4wdLkE3sTDd9
+MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEAAoIBAQDKVW6l8o9I6Wt1
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-+wapUQ7517R2w2tUnAOidg==
+1Jroja8Cq6ZE3XsBwW+ge28=
 -----END PRIVATE KEY-----

frontend/vue-app/192.168.1.102+1.pem

@@ -1,25 +1,26 @@
 -----BEGIN CERTIFICATE-----
-MIIETDCCArSgAwIBAgIQDRI/2ndt0jHqQgdHokXM3jANBgkqhkiG9w0BAQsFADCB
+MIIEYjCCAsqgAwIBAgIRAKMCeivvVrGdMDcAcGb3ArYwDQYJKoZIhvcNAQELBQAw
-hTEeMBwGA1UEChMVbWtjZXJ0IGRldmVsb3BtZW50IENBMS0wKwYDVQQLDCRERVNL
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-VE9QLUFVOTBHNkpcUnlhbkBERVNLVE9QLUFVOTBHNkoxNDAyBgNVBAMMK21rY2Vy
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-dCBERVNLVE9QLUFVOTBHNkpcUnlhbkBERVNLVE9QLUFVOTBHNkowHhcNMjUxMTE4
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-MTU1MjA1WhcNMjgwMjE4MTU1MjA1WjBYMScwJQYDVQQKEx5ta2NlcnQgZGV2ZWxv
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 -----END CERTIFICATE-----

frontend/vue-app/public/manifest.json

@@ -1,4 +1,5 @@
 {
+  "id": "/",
   "name": "Reward App",
   "short_name": "Rewards",
   "start_url": "/",
@@ -9,8 +10,20 @@
   "icons": [
     {
       "src": "/favicon.ico",
-      "sizes": "48x48",
+      "sizes": "32x32",
       "type": "image/x-icon"
+    },
+    {
+      "src": "/icons/icon-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png",
+      "purpose": "any"
+    },
+    {
+      "src": "/icons/icon-512x512.png",
+      "sizes": "512x512",
+      "type": "image/png",
+      "purpose": "any"
     }
   ]
 }

frontend/vue-app/public/sw.js

@@ -1,5 +1,14 @@
 /* Service Worker for Reward App push notifications */
 
+/* Activate immediately — no waiting for old tabs to close */
+self.addEventListener('install', function (event) {
+  event.waitUntil(self.skipWaiting())
+})
+
+self.addEventListener('activate', function (event) {
+  event.waitUntil(self.clients.claim())
+})
+
 self.addEventListener('push', function (event) {
   if (!event.data) return
 
@@ -13,6 +22,7 @@ self.addEventListener('push', function (event) {
   const title = payload.title || 'Reward App'
   const options = {
     body: payload.body || '',
+    icon: '/icons/icon-192x192.png',
     data: payload,
     actions: [
       { action: 'approve', title: 'Approve' },