feat(FN-3755): reorder task detail timestamps

Reorders timestamps in the task detail modal and adds a rendering test for the component, with a pnpm-lock bump.

Fusion-Task-Id: FN-3755

packages/dashboard/app/components/TaskDetailModal.css

@@ -156,6 +156,11 @@
   border-radius: var(--radius-sm);
 }
 
+.detail-timestamps {
+  color: var(--text-dim);
+  margin-top: var(--space-xs);
+}
+
 @media (max-width: 768px) {
   .detail-provenance {
     align-items: flex-start;

packages/dashboard/app/components/TaskDetailModal.tsx

@@ -1860,8 +1860,6 @@ export function TaskDetailContent({
                 );
               })()}
               <div className="detail-meta">
-                Created {new Date(task.createdAt).toLocaleDateString()} · Updated{" "}
-                {new Date(task.updatedAt).toLocaleDateString()} ·
                 <label
                   className={`card-priority-badge card-priority-badge--${inlinePriority} detail-priority-chip ${isSavingInlinePriority ? "detail-priority-chip--saving" : ""}`}
                 >
@@ -1953,6 +1951,10 @@ export function TaskDetailContent({
                     </span>
                   </div>
                 )}
+                <div className="detail-timestamps">
+                  Created {new Date(task.createdAt).toLocaleDateString()} · Updated{" "}
+                  {new Date(task.updatedAt).toLocaleDateString()}
+                </div>
               </div>
             </>
           )}

packages/dashboard/app/components/__tests__/TaskDetailModal.rendering.test.tsx

@@ -141,6 +141,27 @@ describe("TaskDetailModal", () => {
 
       expect(screen.queryByText(/Created via/)).not.toBeInTheDocument();
     });
+
+    it("FN-3755 renders provenance before created-updated timestamps", () => {
+      const { container } = render(
+        <TaskDetailModal
+          task={makeTask({ sourceType: "dashboard_ui" })}
+          onClose={noop}
+          onMoveTask={noopMove}
+          onDeleteTask={noopDelete}
+          onMergeTask={noopMerge}
+          onOpenDetail={noopOpenDetail}
+          addToast={noop}
+        />,
+      );
+
+      const provenance = screen.getByText("Created via Dashboard").closest(".detail-provenance");
+      const timestamps = container.querySelector(".detail-timestamps");
+
+      expect(provenance).toBeTruthy();
+      expect(timestamps).toBeTruthy();
+      expect(provenance?.compareDocumentPosition(timestamps as Node) & Node.DOCUMENT_POSITION_FOLLOWING).toBeTruthy();
+    });
   });
 
   it("renders modal wrapper structure and default close control", () => {