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/shared/widgets/text_separator.dart

@@ -0,0 +1,21 @@
+import 'package:flutter/material.dart';
+import 'package:google_fonts/google_fonts.dart';
+
+class TextSeparator extends StatelessWidget {
+  final String text;
+
+  const TextSeparator({super.key, required this.text});
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      padding: EdgeInsets.symmetric(horizontal: 20),
+      margin: EdgeInsets.only(bottom: 5),
+      child: Text(
+        text,
+        style: GoogleFonts.roboto(
+            color: Colors.white.withOpacity(0.3), fontSize: 12),
+      ),
+    );
+  }
+}