fix(usage): keep the sidebar usage summary current while it is shown

The summary fetched reports once on mount and never again: no interval,
window-focus and reconnect refetches are off app-wide, and the daemon does
not push report changes. It only updated when the Usage modal or Settings
mounted the same query and refetched it. It now re-reads every minute while
visible; the daemon answers from its five-minute cache, so source APIs are
still hit at most once per cache window.

packages/app/e2e/browser/usage-sidebar-item.spec.ts

@@ -469,3 +469,27 @@ test("visible usage summary requests reports on load", async ({ page }) => {
   await expectPinnedUsage(page, ["31% 5h", "54% wk", "7% 5h", "12% wk"]);
   expect(usage.listRequests()).toHaveLength(1);
 });
+
+test("visible usage summary picks up changed reports without opening Usage", async ({ page }) => {
+  test.setTimeout(180_000);
+  const usage = await installUsageReportsFixture(page, {
+    lists: [() => claudeSessionAt(31), () => claudeSessionAt(80)],
+  });
+  await seedSidebarFooterPreferences(page, [{ key: "usage", visible: true }]);
+  await page.setViewportSize(WIDE);
+  await page.clock.install();
+  await gotoAppShell(page);
+  await expectPinnedUsage(page, ["31% 5h", "54% wk", "7% 5h", "12% wk"]);
+  expect(usage.listRequests()).toHaveLength(1);
+
+  await page.clock.fastForward(61_000);
+  await expectPinnedUsage(page, ["80% 5h", "54% wk", "7% 5h", "12% wk"]);
+  await expect(usageModal(page)).toHaveCount(0);
+});
+
+function claudeSessionAt(usedPct: number) {
+  const reports = claudeAndCodexReports();
+  const claude = reports[0]!;
+  if (claude.report.status === "available") claude.report.windows[0]!.usedPct = usedPct;
+  return reports;
+}

packages/app/src/usage/queries.ts

@@ -166,7 +166,8 @@ const NO_REPORTS: UsageReportEntry[] = [];
 
 /**
  * The reports of the sidebar's usage host, which is connected and reports usage; none until they
- * load, or without a host.
+ * load, or without a host. Re-read every minute while the summary is shown, since the daemon never
+ * pushes report changes.
  */
 export function useUsageHostReports(serverId: string | null): UsageReportEntry[] {
   const setting = useUsageSetting(serverId);
@@ -177,6 +178,7 @@ export function useUsageHostReports(serverId: string | null): UsageReportEntry[]
     queryFn: serverId ? () => listReports(queryClient, serverId) : skipToken,
     dataShape: "list",
     staleTimeMs: REPORTS_STALE_TIME_MS,
+    refetchInterval: REPORTS_STALE_TIME_MS,
   });
   return setting.enabled ? (query.data ?? NO_REPORTS) : NO_REPORTS;
 }