fix(pwa): add Discover shortcut and fix/optimize icons (#1525)

public/site.webmanifest

@@ -4,25 +4,25 @@
   "start_url": "./",
   "icons": [
     {
-      "src": "/android-chrome-192x192.png",
+      "src": "./android-chrome-192x192.png",
       "sizes": "192x192",
       "type": "image/png",
       "purpose": "any"
     },
     {
-      "src": "/android-chrome-192x192_maskable.png",
+      "src": "./android-chrome-192x192_maskable.png",
       "sizes": "192x192",
       "type": "image/png",
       "purpose": "maskable"
     },
     {
-      "src": "/android-chrome-512x512.png",
+      "src": "./android-chrome-512x512.png",
       "sizes": "512x512",
       "type": "image/png",
       "purpose": "any"
     },
     {
-      "src": "/android-chrome-512x512_maskable.png",
+      "src": "./android-chrome-512x512_maskable.png",
       "sizes": "512x512",
       "type": "image/png",
       "purpose": "maskable"
@@ -32,12 +32,23 @@
   "background_color": "#1f2937",
   "display": "standalone",
   "shortcuts": [
+    {
+      "name": "Discover",
+      "url": "./",
+      "icons": [
+        {
+          "src": "./sparkles-icon-192x192.png",
+          "sizes": "192x192",
+          "type": "image/png"
+        }
+      ]
+    },
     {
       "name": "Requests",
-      "url": "/requests",
+      "url": "./requests",
       "icons": [
         {
-          "src": "/clock-icon-192x192.png",
+          "src": "./clock-icon-192x192.png",
           "sizes": "192x192",
           "type": "image/png"
         }
@@ -45,10 +56,10 @@
     },
     {
       "name": "Profile",
-      "url": "/profile",
+      "url": "./profile",
       "icons": [
         {
-          "src": "/users-icon-192x192.png",
+          "src": "./user-icon-192x192.png",
           "sizes": "192x192",
           "type": "image/png"
         }
@@ -56,10 +67,10 @@
     },
     {
       "name": "Settings",
-      "url": "/profile/settings",
+      "url": "./profile/settings",
       "icons": [
         {
-          "src": "/cog-icon-192x192.png",
+          "src": "./cog-icon-192x192.png",
           "sizes": "192x192",
           "type": "image/png"
         }