chore: v2.8.21 — update progress steps, clone in background, extra SSH keys inline, today's spend

- Plugin update reports its running step (plugin-update-progress.json →
  plugin_update_progress); a hidden update or clone leaves a progress chip.
- Clone here can run in the background.
- Git identity: extra SSH keys are added inline per host (no More keys tab).
- Users: spend today (viewer's local day, ?tz_offset=).
- Prettier on the files touched since v2.8.20.

client/src/components/__tests__/UpdateNotifier.test.tsx

@@ -312,6 +312,58 @@ describe("UpdateNotifier — closing vs skipping", () => {
   });
 });
 
+describe("UpdateNotifier — hidden while it runs", () => {
+  it("keeps a chip with the chain's step in sight and re-opens from it", async () => {
+    const PLUGIN: UpdateStatusPayload = {
+      ...BASE_STATUS,
+      situation: "plugin_managed",
+      install_kind: "plugin",
+      plugin_marketplace: "sg",
+      plugin_name: "agenthub",
+      commits_behind: 0,
+      local_version: "1.5.0",
+      release_check: "ok",
+      latest_release: "v1.6.0",
+    };
+    statusMock.mockResolvedValue(PLUGIN);
+    applyMock.mockResolvedValue({ ...PLUGIN, applied: true, mode: "plugin" });
+    render(<UpdateNotifier />);
+    await userEvent.click(await screen.findByText(i18n.t("updates:updateNow")));
+    await screen.findAllByText(i18n.t("updates:pluginUpdating"));
+    statusMock.mockResolvedValue({
+      ...PLUGIN,
+      plugin_update_progress: {
+        step: "plugin_update",
+        index: 2,
+        total: 3,
+        started_at: new Date().toISOString(),
+      },
+    });
+    const step = i18n.t("updates:pluginStep.plugin_update", { index: 2, total: 3 });
+    expect(await screen.findByTestId("update-step", {}, { timeout: 4000 })).toHaveTextContent(step);
+
+    await userEvent.keyboard("{Escape}");
+    const chip = await screen.findByTestId("update-chip");
+    expect(chip).toHaveTextContent(i18n.t("updates:chipTitle", { version: "v1.6.0" }));
+    expect(chip).toHaveTextContent(step);
+    await userEvent.click(chip);
+    expect(
+      await screen.findByText(i18n.t("updates:releaseTitle", { version: "v1.6.0" }))
+    ).toBeInTheDocument();
+    expect(screen.queryByTestId("update-chip")).toBeNull();
+  });
+
+  it("shows no chip when nothing is running", async () => {
+    render(<UpdateNotifier />);
+    await screen.findByText(i18n.t("updates:title"));
+    await userEvent.keyboard("{Escape}");
+    await waitFor(() =>
+      expect(screen.queryByText(i18n.t("updates:title"))).not.toBeInTheDocument()
+    );
+    expect(screen.queryByTestId("update-chip")).toBeNull();
+  });
+});
+
 describe("UpdateNotifier — Auto fix", () => {
   it("offers no Not now button, and Auto fix only once an update failed", async () => {
     applyMock.mockRejectedValue(new Error("Command failed: git merge --ff-only v2.8.0"));