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/ui/layouts/auth/auth_layout.dart

@@ -0,0 +1,90 @@
+import 'package:flutter/material.dart';
+
+import 'package:prosapp_web_app/ui/layouts/auth/widgets/custom_title.dart';
+import 'package:prosapp_web_app/ui/layouts/auth/widgets/background_auth.dart';
+
+class AuthLayout extends StatelessWidget {
+  final Widget child;
+  const AuthLayout({super.key, required this.child});
+
+  @override
+  Widget build(BuildContext context) {
+    final size = MediaQuery.of(context).size;
+
+    return Scaffold(
+      body: Scrollbar(
+        child: ListView(
+          physics: const ClampingScrollPhysics(),
+          children: [
+            size.width > 1000
+                ? _DesktopBody(child: child)
+                : _MobileBody(child: child),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+class _MobileBody extends StatelessWidget {
+  final Widget child;
+
+  const _MobileBody({super.key, required this.child});
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      color: Colors.white,
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          const SizedBox(height: 20),
+          const CustomTitle(),
+          SizedBox(width: double.infinity, height: 420, child: child),
+          const SizedBox(
+            width: double.infinity,
+            height: 400,
+            child: BackgroundAuth(),
+          )
+        ],
+      ),
+    );
+  }
+}
+
+class _DesktopBody extends StatelessWidget {
+  final Widget child;
+
+  const _DesktopBody({super.key, required this.child});
+
+  @override
+  Widget build(BuildContext context) {
+    final size = MediaQuery.of(context).size;
+
+    return Container(
+      width: size.width,
+      height: size.height,
+      color: Colors.white,
+      child: Row(
+        children: [
+          const Expanded(child: BackgroundAuth()),
+
+          // View container
+          Container(
+            width: 600,
+            height: double.infinity,
+            color: Colors.white,
+            child: Column(
+              children: [
+                const SizedBox(height: 20),
+                const CustomTitle(),
+                const SizedBox(height: 50),
+                Expanded(child: child),
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}