fixed chat bubble link styling and gesture handling, and added android package visibility for common schemes

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

@@ -98,9 +98,21 @@ class _HighlightedLinkifyState extends State<HighlightedLinkify> {
     final defaultStyle = widget.style ??
         Theme.of(context).textTheme.bodyMedium ??
         DefaultTextStyle.of(context).style;
-    final linkStyle = (widget.linkStyle ??
-            const TextStyle(color: Colors.blue, decoration: TextDecoration.underline))
-        .merge(defaultStyle.copyWith(color: null, decoration: null));
+    // Start from the surrounding text style so links inherit font family,
+    // size, weight, etc., then layer the link-specific color and underline
+    // on top. (Going the other way around — link style as base — used to
+    // work because TextStyle.copyWith treats `null` as "leave unchanged",
+    // so the explicit `color: null, decoration: null` were silently
+    // ignored and the merge pulled defaultStyle's color/decoration over
+    // the blue + underline. Result: links rendered in body-text color
+    // with no underline.)
+    final linkStyle = defaultStyle.merge(
+      widget.linkStyle ??
+          const TextStyle(
+            color: Colors.blue,
+            decoration: TextDecoration.underline,
+          ),
+    );
     const linkHighlight = TextStyle(
       backgroundColor: Color(0xFFFFD54F),
       color: Colors.black,