sweep ClideTappable across 15 files, remove 267 lines

23 StatefulWidget+State hover pairs converted to StatelessWidget
using ClideTappable(builder: (ctx, hovered, _) => ...). Covers
app.dart (5), welcome (2), claude session host (2), column hat (2),
spine (1), pane chrome (1), tab bar (1), decisions (1), tickets (1),
graph (1), pql panel (1), backlinks (1), file tree (2), git panel (1),
git status (1). Only EditorDragHandle and ClidePalette excluded
(drag/keyboard behavior beyond hover+tap).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

lib/builtin/tickets/src/tickets_view.dart

@@ -102,35 +102,26 @@ class _TicketEntry {
       );
 }
 
-class _TicketRow extends StatefulWidget {
+class _TicketRow extends StatelessWidget {
   const _TicketRow({required this.entry, required this.tokens});
   final _TicketEntry entry;
   final SurfaceTokens tokens;
 
-  @override
-  State<_TicketRow> createState() => _TicketRowState();
-}
-
-class _TicketRowState extends State<_TicketRow> {
-  bool _hovered = false;
-
   @override
   Widget build(BuildContext context) {
-    final statusColor = switch (widget.entry.status) {
-      'done' => widget.tokens.statusSuccess,
-      'in_progress' => widget.tokens.statusInfo,
-      'cancelled' => widget.tokens.statusError,
-      _ => widget.tokens.globalTextMuted,
+    final statusColor = switch (entry.status) {
+      'done' => tokens.statusSuccess,
+      'in_progress' => tokens.statusInfo,
+      'cancelled' => tokens.statusError,
+      _ => tokens.globalTextMuted,
     };
-    return MouseRegion(
-      onEnter: (_) => setState(() => _hovered = true),
-      onExit: (_) => setState(() => _hovered = false),
-      child: Container(
-        color: _hovered ? widget.tokens.listItemHoverBackground : null,
+    return ClideTappable(
+      builder: (context, hovered, _) => Container(
+        color: hovered ? tokens.listItemHoverBackground : null,
         padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 4),
         child: Row(
           children: [
-            ClideText(widget.entry.id, color: widget.tokens.globalTextMuted, fontSize: 12),
+            ClideText(entry.id, color: tokens.globalTextMuted, fontSize: 12),
             const SizedBox(width: 6),
             Container(
               width: 6,
@@ -138,7 +129,7 @@ class _TicketRowState extends State<_TicketRow> {
               decoration: BoxDecoration(color: statusColor, shape: BoxShape.circle),
             ),
             const SizedBox(width: 6),
-            Expanded(child: ClideText(widget.entry.title, fontSize: 13)),
+            Expanded(child: ClideText(entry.title, fontSize: 13)),
           ],
         ),
       ),