refactored data providers with centralized cache resolution, unified UI using custom dialogs and bottom sheets, and enhanced network error handling for Dio and TLS errors

lib/view/pages/talk/widgets/bubble.dart

@@ -40,9 +40,8 @@ class BubbleStyle {
   final double borderRadius;
 }
 
-/// Lightweight chat bubble. Replaces the abandoned `bubble` package: renders a
-/// rounded container with optional shadow / border. The nip is conveyed by
-/// flattening one corner so the bubble visually anchors to the speaker side.
+/// The "nip" is faked by flattening one corner so the bubble anchors to
+/// the speaker side.
 class Bubble extends StatelessWidget {
   const Bubble({required this.child, required this.style, super.key});