FN-6092: align task card promote button right

Right-align the task card promote action within its action row.

- add auto margin to the promote action so it anchors to the row's right edge
- cover the promote action alignment with a TaskCard CSS regression test
- add a patch changeset for the published CLI package

Files changed:
 .changeset/fn-6092-promote-button.md                |  5 +++++
 packages/dashboard/app/components/TaskCard.css      |  1 +
 .../app/components/__tests__/TaskCard.test.tsx      | 21 +++++++++++++++++++++
 3 files changed, 27 insertions(+)

Fusion-Task-Id: FN-6092

Fusion-Task-Lineage: eacd596e-c810-44fd-b8ec-05c76988649f

packages/dashboard/app/components/TaskCard.css

@@ -800,6 +800,7 @@
   gap: var(--space-xs);
   flex-shrink: 0;
   padding: var(--space-xs) var(--space-sm);
+  margin-left: auto;
   height: var(--card-chip-height);
   min-height: var(--card-chip-height);
   white-space: nowrap;

packages/dashboard/app/components/__tests__/TaskCard.test.tsx

@@ -4366,6 +4366,27 @@ describe("TaskCard mission badge", () => {
     }
   });
 
+  it("right-aligns the promote action inside the card action row", () => {
+    const onPromote = vi.fn().mockResolvedValue(undefined);
+    const css = loadAllAppCssBaseOnly();
+
+    render(
+      <TaskCard
+        task={makeTask({ id: "FN-781", column: "todo" })}
+        onOpenDetail={noop}
+        addToast={noop}
+        onPromote={onPromote}
+      />,
+    );
+
+    const promoteButton = screen.getByTestId("card-promote-FN-781");
+    const actionRow = promoteButton.closest(".card-action-row");
+
+    expect(actionRow).not.toBeNull();
+    expect(actionRow?.contains(promoteButton)).toBe(true);
+    expect(css).toMatch(/\.card-promote-action\s*\{[^}]*margin-left:\s*auto;[^}]*\}/);
+  });
+
   it("calls onPromote without opening the card when promote is clicked", () => {
     const onPromote = vi.fn().mockResolvedValue(undefined);
     const onOpenDetail = vi.fn();