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>

lib/models/profession.dart

@@ -0,0 +1,22 @@
+class Profession {
+  final String name;
+
+  Profession({required this.name});
+
+  Map<String, Object?> toDocument() {
+    return {
+      'name': name,
+    };
+  }
+
+  static Profession fromDocument(Map<String, dynamic> doc) {
+    return Profession(
+      name: doc['name'] as String,
+    );
+  }
+
+  @override
+  String toString() {
+    return 'Profession{name: $name}';
+  }
+}