replace: swap prosappweb content for prosapp_web_app (more complete version)

prosapp_web_app has chat, dashboard, calendar, support, 13 providers and
Fluro URL routing. Keep Dockerfile + nginx.conf from previous prosappweb.
Upgrade google_fonts 6.2.1 → 8.1.0 (Dart 3.12 compat fix).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

ios/Runner/Assets.xcassets/LaunchImage.imageset/Contents.json

@@ -1,23 +1,23 @@
 {
   "images" : [
     {
-      "filename" : "Icon-maskable-512.png",
       "idiom" : "universal",
+      "filename" : "LaunchImage.png",
       "scale" : "1x"
     },
     {
-      "filename" : "Icon-maskable-512 1.png",
       "idiom" : "universal",
+      "filename" : "LaunchImage@2x.png",
       "scale" : "2x"
     },
     {
-      "filename" : "Icon-maskable-512 2.png",
       "idiom" : "universal",
+      "filename" : "LaunchImage@3x.png",
       "scale" : "3x"
     }
   ],
   "info" : {
-    "author" : "xcode",
-    "version" : 1
+    "version" : 1,
+    "author" : "xcode"
   }
 }