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/StatusBar.tsx

@@ -35,7 +35,15 @@ import { LIVE_RUNS_EVENT, selectedFrom } from "./WorkspaceTree";
 
 const COST_POLL_MS = 30_000;
 const QUOTA_POLL_MS = 5 * 60_000;
-const QUOTA_TOOL_LABEL: Record<ToolQuota["id"], string> = { claude: "Claude", codex: "Codex" };
+const QUOTA_TOOL_LABEL: Record<ToolQuota["id"], string> = {
+  claude: "Claude",
+  codex: "Codex",
+  antigravity: "Antigravity",
+  cursor: "Cursor",
+  grok: "Grok",
+  kimi: "Kimi",
+  opencode: "OpenCode Go",
+};
 
 function localDate(d = new Date()): string {
   const pad = (n: number) => String(n).padStart(2, "0");
@@ -123,6 +131,7 @@ const QUOTA_ERROR_KEY: Record<string, string> = {
   ELIVEEXPIRED: "statusBar.quotaExpired",
   EPROFILEEXPIRED: "statusBar.quotaProfileExpired",
   EWRONGACCOUNT: "statusBar.quotaWrongAccount",
+  ETOKENEXPIRED: "statusBar.quotaTokenExpired",
 };
 
 /** One account: its name, sign-in line, then a row per window with its reset. */
@@ -133,6 +142,14 @@ function QuotaAccount({ q, many }: { q: ToolQuota; many: boolean }) {
     <div data-testid="status-bar-quota-account" className="min-w-0">
       <div className="flex items-center gap-1.5">
         <span className="truncate font-medium">{q.label || q.account}</span>
+        {q.plan && (
+          <span
+            data-testid="status-bar-quota-plan"
+            className="shrink-0 rounded bg-surface-4 px-1 text-[10px] capitalize leading-4 text-fg-secondary"
+          >
+            {q.plan}
+          </span>
+        )}
         {many && q.active !== false && (
           <span className="shrink-0 rounded bg-accent-solid/15 px-1 text-[10px] leading-4 text-accent">
             {t("statusBar.quotaActive")}
@@ -146,11 +163,16 @@ function QuotaAccount({ q, many }: { q: ToolQuota; many: boolean }) {
         </div>
       ) : (
         <div className="mt-1 grid grid-cols-[2.75rem_1fr_2.25rem_auto] items-center gap-x-2 gap-y-0.5 tabular-nums">
-          {q.windows.map((w) => {
+          {q.windows.map((w, i) => {
             const p = Math.round(w.usedPercent ?? 0);
             const resets = untilText(w.resetsAt);
             return (
-              <Fragment key={w.label}>
+              <Fragment key={`${w.group ?? ""}-${w.label}`}>
+                {w.group && w.group !== q.windows[i - 1]?.group && (
+                  <span className="col-span-4 mt-0.5 truncate text-[10px] text-fg-muted">
+                    {w.group}
+                  </span>
+                )}
                 <span className="text-fg-muted">
                   {t(`statusBar.quotaWindow.${w.label}`, { defaultValue: w.label })}
                 </span>