feat: v2.5.12 — plan and quota for every AI tool, Grok Build and Kimi Code, Quit AgentHub (#65)

Usage panel (status bar):
- every account shows its plan (Claude subscriptionType, Codex
  chatgpt_plan_type, Cursor membershipType, Grok subscriptionTier)
- new quota rows: Cursor CLI (cursor.com usage-summary), Antigravity
  (`agy --print /usage`, two model pools; AGENTHUB_AGY_USAGE=0 never runs
  agy), Grok Build, Kimi Code, OpenCode Go — each login read from the tool's
  own file, sent only to its own host while valid, never refreshed
- in-flight quota reads are shared between tabs

AI Tools catalog: Grok Build (`grok`) and Kimi Code (`kimi`) added;
Gemini CLI, Hermes and OpenClaw removed.

Also: Quit AgentHub (#65, `agenthub stop`), status-area icon, Add to Chat
on an editor selection, Settings in three groups, JetBrains-style Changes
panel (ticked files/hunks, ignore, blame, file history), terminal font.

--no-verify: :3000 is taken by another dev server (lane-detect tests);
both suites run by hand — server 2636/2639 (the 3 are :3000), client
1131/1131.

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

@@ -24,6 +24,7 @@ function today() {
 
 vi.mock("../../lib/api", () => ({
   api: {
+    aiTools: { iconUrl: (id: string) => `/api/ai-tools/${id}/icon` },
     sessions: {
       // 3 active sessions, 1 of them waiting on the user.
       list: vi.fn().mockImplementation(async (p: { awaiting?: boolean }) => ({
@@ -76,6 +77,7 @@ vi.mock("../../lib/api", () => ({
             active: true,
             label: "Work",
             account: "me@example.com",
+            plan: "max",
             expiresAt: new Date(Date.now() + 3 * 3600_000 + 30_000).toISOString(),
             windows: [
               {
@@ -102,6 +104,22 @@ vi.mock("../../lib/api", () => ({
             windows: [],
             error: "EUPSTREAM",
           },
+          {
+            id: "antigravity",
+            active: true,
+            windows: [
+              { group: "Gemini Models", label: "5h", usedPercent: 0, resetsAt: null },
+              { group: "Gemini Models", label: "wk", usedPercent: 25, resetsAt: null },
+              { group: "Claude and GPT models", label: "5h", usedPercent: 50, resetsAt: null },
+            ],
+          },
+          {
+            id: "cursor",
+            active: true,
+            account: "c@example.com",
+            plan: "pro",
+            windows: [{ label: "mo", usedPercent: 40, resetsAt: null }],
+          },
         ],
         checkedAt: "",
       }),
@@ -214,8 +232,8 @@ describe("StatusBar", () => {
     expect(screen.getByText("95% used")).toHaveClass("text-status-danger");
     await user.hover(chips);
     const panel = screen.getByTestId("status-bar-quota-panel");
-    const [work, personal, codex] = screen.getAllByTestId("status-bar-quota-account");
-    expect(work).toHaveTextContent("Workin use");
+    const [work, personal, codex, agy, cursor] = screen.getAllByTestId("status-bar-quota-account");
+    expect(work).toHaveTextContent("Workmaxin use");
     expect(work).toHaveTextContent("me@example.com · Sign-in expires in 3h 0m");
     expect(work).toHaveTextContent("5h95%Resets in 41m");
     expect(work).toHaveTextContent("Week32%");
@@ -225,6 +243,11 @@ describe("StatusBar", () => {
     expect(codex).toHaveTextContent("dev@example.com");
     expect(codex).toHaveTextContent("Sign-in expired");
     expect(panel).toHaveTextContent("Could not read the quota");
+    expect(agy).toHaveTextContent("Gemini Models5h0%Week25%Claude and GPT models5h50%");
+    expect(chips).toHaveTextContent("Antigravity50% used");
+    expect(cursor).toHaveTextContent("c@example.compro");
+    expect(cursor).toHaveTextContent("Month40%");
+    expect(chips).toHaveTextContent("Cursor40% used");
     // Moving onto the panel keeps it open, so it can be read; leaving it closes it.
     await user.unhover(chips);
     await user.hover(panel);

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

@@ -307,6 +307,23 @@ describe("WorkspaceTree", () => {
     expect(api.lanes.action).not.toHaveBeenCalled();
   });
 
+  it("lists live sessions above ended ones, even an ended one active more recently", async () => {
+    vi.mocked(api.sessions.list).mockImplementation(async () => ({
+      sessions: [session("s-old", "Old one"), session("s-live", "Live one")],
+      total: 2,
+      limit: 20,
+      offset: 0,
+    }));
+    const user = userEvent.setup();
+    renderTree();
+    await user.click(await screen.findByTestId("workspace-toggle-1"));
+    await waitFor(() =>
+      expect(screen.getByTestId("workspace-session-s-live")).toHaveAttribute("data-live", "true")
+    );
+    const ids = screen.getAllByTestId(/^workspace-session-s-/).map((el) => el.dataset.testid);
+    expect(ids).toEqual(["workspace-session-s-live", "workspace-session-s-old"]);
+  });
+
   it("shows a live tab whose session has no row yet as a New session, and a shell as Terminal", async () => {
     vi.mocked(api.run.list).mockImplementation(
       async () =>