Added cancel details in activity logs as well as used icons

lib/screens/tasks/task_detail_screen.dart

@@ -2227,7 +2227,14 @@ class _TaskDetailScreenState extends ConsumerState<TaskDetailScreen>
             : (profileById[l.actorId]?.fullName ?? l.actorId!);
         switch (l.actionType) {
           case 'created':
-            timeline.add(_activityRow('Task created', actorName, l.createdAt));
+            timeline.add(
+              _activityRow(
+                'Task created',
+                actorName,
+                l.createdAt,
+                icon: Icons.add_task,
+              ),
+            );
             break;
           case 'assigned':
             final meta = l.meta ?? {};
@@ -2241,6 +2248,7 @@ class _TaskDetailScreenState extends ConsumerState<TaskDetailScreen>
                 auto ? 'Auto-assigned to $name' : 'Assigned to $name',
                 actorName,
                 l.createdAt,
+                icon: Icons.person_add,
               ),
             );
             break;
@@ -2252,7 +2260,12 @@ class _TaskDetailScreenState extends ConsumerState<TaskDetailScreen>
                 .map((id) => profileById[id]?.fullName ?? id)
                 .join(', ');
             timeline.add(
-              _activityRow('Reassigned to $toNames', actorName, l.createdAt),
+              _activityRow(
+                'Reassigned to $toNames',
+                actorName,
+                l.createdAt,
+                icon: Icons.swap_horiz,
+              ),
             );
             break;
           case 'started':
@@ -2268,7 +2281,14 @@ class _TaskDetailScreenState extends ConsumerState<TaskDetailScreen>
                 label =
                     'Task started — Response: ${_formatDuration(responseDuration)} ($assigneeName responded at ${AppTime.formatDate(resp)} ${AppTime.formatTime(resp)})';
               }
-              timeline.add(_activityRow(label, actorName, l.createdAt));
+              timeline.add(
+                _activityRow(
+                  label,
+                  actorName,
+                  l.createdAt,
+                  icon: Icons.play_arrow,
+                ),
+              );
             }
             break;
           case 'completed':
@@ -2283,15 +2303,69 @@ class _TaskDetailScreenState extends ConsumerState<TaskDetailScreen>
                       'Task completed — Execution: ${_formatDuration(exec)} (${AppTime.formatDate(start)} ${AppTime.formatTime(start)} → ${AppTime.formatDate(end)} ${AppTime.formatTime(end)})';
                 }
               }
-              timeline.add(_activityRow(label, actorName, l.createdAt));
+              timeline.add(
+                _activityRow(
+                  label,
+                  actorName,
+                  l.createdAt,
+                  icon: Icons.check_circle,
+                ),
+              );
             }
             break;
+          case 'cancelled':
+            final meta = l.meta ?? {};
+            final reason = (meta['reason'] as String?) ?? '';
+            final base = reason.isNotEmpty
+                ? 'Task cancelled — $reason'
+                : 'Task cancelled';
+            timeline.add(
+              _activityRow(base, actorName, l.createdAt, icon: Icons.cancel),
+            );
+            break;
           default:
-            timeline.add(_activityRow(l.actionType, actorName, l.createdAt));
+            timeline.add(
+              _activityRow(
+                l.actionType,
+                actorName,
+                l.createdAt,
+                icon: Icons.info,
+              ),
+            );
         }
       }
     }
 
+    // If the task is cancelled but no explicit cancelled activity row exists,
+    // show a fallback using the task's cancellation fields.
+    final hasCancelledLog = logs.any((e) => e.actionType == 'cancelled');
+    if (task.status == 'cancelled' && !hasCancelledLog) {
+      final reason = task.cancellationReason;
+      final at = task.cancelledAt ?? AppTime.now();
+      String inferredActor = 'System';
+      try {
+        final candidates = logs
+            .where((e) => e.actorId != null && e.createdAt.isBefore(at))
+            .toList();
+        if (candidates.isNotEmpty) {
+          candidates.sort((a, b) => a.createdAt.compareTo(b.createdAt));
+          final last = candidates.last;
+          inferredActor = profileById[last.actorId]?.fullName ?? last.actorId!;
+        }
+      } catch (_) {}
+
+      timeline.add(
+        _activityRow(
+          reason != null && reason.isNotEmpty
+              ? 'Task cancelled — $reason'
+              : 'Task cancelled',
+          inferredActor,
+          at,
+          icon: Icons.cancel,
+        ),
+      );
+    }
+
     // Response and execution times are now merged into the related
     // 'Task started' and 'Task completed' timeline entries above.
 
@@ -2305,17 +2379,18 @@ class _TaskDetailScreenState extends ConsumerState<TaskDetailScreen>
 
   // TAT helpers removed; timings are shown inline in the activity timeline.
 
-  Widget _activityRow(String title, String actor, DateTime at) {
+  Widget _activityRow(
+    String title,
+    String actor,
+    DateTime at, {
+    IconData icon = Icons.circle,
+  }) {
     return Padding(
       padding: const EdgeInsets.symmetric(vertical: 8),
       child: Row(
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
-          Icon(
+          Icon(icon, size: 16, color: Theme.of(context).colorScheme.primary),
-            Icons.circle,
-            size: 12,
-            color: Theme.of(context).colorScheme.primary,
-          ),
           const SizedBox(width: 8),
           Expanded(
             child: Column(