feat(agy): show the signed-in quota on the official card

- Ask agy's own /usage command (agy -p /usage --output-format json) instead of
  reading credentials; it makes no model call and opens no conversation.
- Keep the Gemini group and the Claude/GPT group, each with its 5-hour and
  weekly window, as four tiers; unknown buckets are skipped.
- On the card each group shows only its window with the least left, since
  four tiers do not fit; the expanded view lists all four.
- A missing agy is treated as no login (nothing shown); a timeout propagates
  so the last good value is kept; other failures do not echo agy's output.

tests/components/ProviderCard.agyModel.test.tsx

@@ -11,7 +11,9 @@ vi.mock("@/components/providers/ProviderCardActions", () => ({
 vi.mock("@/components/ProviderIcon", () => ({ ProviderIcon: () => null }));
 vi.mock("@/components/UsageFooter", () => ({ default: () => null }));
 vi.mock("@/components/SubscriptionQuotaFooter", () => ({
-  default: () => null,
+  default: ({ appId }: { appId: string }) => (
+    <span data-testid="subscription-quota">{appId}</span>
+  ),
 }));
 vi.mock("@/components/CopilotQuotaFooter", () => ({ default: () => null }));
 vi.mock("@/components/CodexOauthQuotaFooter", () => ({ default: () => null }));
@@ -75,3 +77,35 @@ describe("ProviderCard Antigravity model", () => {
     expect(screen.queryByText("Gemini 3.1 Pro (High)")).not.toBeInTheDocument();
   });
 });
+
+describe("ProviderCard Antigravity official quota", () => {
+  const official: Provider = {
+    id: "official",
+    name: "Antigravity",
+    category: "official",
+    settingsConfig: { config: {} },
+    meta: {
+      usage_script: {
+        enabled: true,
+        language: "javascript",
+        code: "",
+        templateType: "official_subscription",
+      },
+    },
+  };
+
+  it("shows the signed-in quota once official usage is turned on", () => {
+    renderCard(official);
+    expect(screen.getByTestId("subscription-quota")).toHaveTextContent("agy");
+  });
+
+  it("stays hidden while usage is off", () => {
+    renderCard({
+      ...official,
+      meta: {
+        usage_script: { ...official.meta!.usage_script!, enabled: false },
+      },
+    });
+    expect(screen.queryByTestId("subscription-quota")).not.toBeInTheDocument();
+  });
+});

tests/components/SubscriptionQuotaFooter.test.tsx

@@ -194,6 +194,41 @@ describe("Claude Fable subscription quota", () => {
   });
 });
 
+describe("Antigravity quota groups", () => {
+  const agyTiers: QuotaTier[] = [
+    { name: "agy_gemini_five_hour", utilization: 10, resetsAt: null },
+    {
+      name: "agy_gemini_weekly",
+      utilization: 40,
+      resetsAt: "2026-09-12T00:00:00Z",
+    },
+    { name: "agy_third_party_five_hour", utilization: 95, resetsAt: null },
+    { name: "agy_third_party_weekly", utilization: 20, resetsAt: null },
+  ];
+
+  it("keeps one line per group on the card: the window with the least left", () => {
+    renderQuota(agyTiers);
+    const lines = screen.getByRole("button").children;
+    expect(lines).toHaveLength(2);
+    expect(lines[0]).toHaveTextContent("Gemini 剩余 60%");
+    expect(lines[1]).toHaveTextContent("Claude/GPT 剩余 5%");
+    // 倒计时跟着留下的那档（Gemini 每周）
+    expect(screen.getByText("2d12h")).toBeInTheDocument();
+  });
+
+  it("lists every group and window when expanded", () => {
+    renderQuota(agyTiers, false);
+    for (const name of [
+      "Gemini 5 小时: 剩余 90%",
+      "Gemini 每周: 剩余 60%",
+      "Claude/GPT 5 小时: 剩余 5%",
+      "Claude/GPT 每周: 剩余 80%",
+    ]) {
+      expect(screen.getByRole("meter", { name })).toBeInTheDocument();
+    }
+  });
+});
+
 describe("credential failures", () => {
   const failed = (credentialStatus: SubscriptionQuota["credentialStatus"]) =>
     renderQuota([], true, {