group consecutive same-file edits into one collapsed card (T-296)

A run of 2+ consecutive edits to the same file now folds into one ClideHolderCard
labelled '# edits' (coalesceEditRuns, run after groupConversation) instead of a
stack of cards; a different file or an interleaving step splits the run. Every
edit stays reachable on expand.

The holder gained an optional aggregate status. New owned primitives: ClideSpinner
(the logo mark, monochrome, 3D Y-axis rotation, reduced-motion-aware) and
ClideStatusIndicator (running→spinner / success→check / error→cross, with an
AnimatedSwitcher seam for a richer transition later — kept self-contained, not
built on ConversationCard's mark). The activity card shares the same indicator.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

lib/builtin/claude/src/holder_card.dart

@@ -30,6 +30,7 @@ class ClideHolderCard extends StatefulWidget {
     required this.children,
     this.title = 'Activity',
     this.initiallyExpanded = false,
+    this.status,
   });
 
   /// One-line gist of the latest step, shown in the collapsed ticker.
@@ -47,6 +48,10 @@ class ClideHolderCard extends StatefulWidget {
 
   final bool initiallyExpanded;
 
+  /// Optional aggregate run status (spinner / check / cross) shown at the head
+  /// of the ticker + header — the run's live state (T-296). Null shows nothing.
+  final ClideRunStatus? status;
+
   @override
   State<ClideHolderCard> createState() => _ClideHolderCardState();
 }
@@ -108,6 +113,10 @@ class _ClideHolderCardState extends State<ClideHolderCard> {
                 ),
               ),
               const SizedBox(width: 8),
+              if (widget.status != null) ...[
+                ClideStatusIndicator(status: widget.status!, size: 12),
+                const SizedBox(width: 8),
+              ],
               ClideText(widget.stepLabel, fontSize: clideFontCaption, color: tokens.globalTextMuted),
             ],
           ),
@@ -186,6 +195,10 @@ class _ClideHolderCardState extends State<ClideHolderCard> {
                 child: ClideText(widget.title, fontSize: clideFontCaption, fontFamily: clideMonoFamily, color: tokens.globalTextMuted),
               ),
               const SizedBox(width: 8),
+              if (widget.status != null) ...[
+                ClideStatusIndicator(status: widget.status!, size: 12),
+                const SizedBox(width: 8),
+              ],
               ClideText(widget.stepLabel, fontSize: clideFontCaption, color: tokens.globalTextMuted),
             ],
           ),