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/settings/AutostartSettings.tsx

@@ -3,15 +3,20 @@
  * whether the dashboard starts at boot/login through the per-user service
  * (systemd `--user` unit, or a LaunchAgent on macOS), over
  * `GET/PUT /api/settings/autostart`. Off by default; a change never starts or
- * stops the running server.
+ * stops the running server. Beside it, **Quit AgentHub** (issue #65, 9router's
+ * tray Quit): `POST /api/settings/quit` closes every workspace terminal and
+ * stops the server, which stays stopped until `agenthub start` — or the next
+ * boot/login while the switch is on. Between them, the status-area icon switch
+ * (`GET/PUT /api/settings/tray`, on by default — server/lib/tray.js).
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
 import { useEffect, useState } from "react";
 import { useTranslation } from "react-i18next";
-import { api, type AutostartStatus } from "../../lib/api";
+import { api, type AutostartStatus, type TrayStatus } from "../../lib/api";
 import { toast } from "../../lib/toast";
-import { SettingsSection, SettingsSwitchRow } from "./SettingsRow";
+import { confirmDialog } from "../../lib/confirm";
+import { SettingsRow, SettingsSection, SettingsSwitchRow } from "./SettingsRow";
 
 export function AutostartSettings() {
   const { t } = useTranslation("settings");
@@ -36,6 +41,39 @@ export function AutostartSettings() {
     }
   };
 
+  const [tray, setTray] = useState<TrayStatus | null>(null);
+  useEffect(() => {
+    api.settings.tray
+      .get()
+      .then(setTray)
+      .catch(() => {});
+  }, []);
+  const changeTray = async (enabled: boolean) => {
+    try {
+      setTray(await api.settings.tray.set(enabled));
+    } catch (err) {
+      toast.error(err instanceof Error ? err.message : String(err));
+    }
+  };
+
+  const [quitting, setQuitting] = useState(false);
+  const quit = async () => {
+    const ok = await confirmDialog({
+      title: t("quit.confirmTitle"),
+      message: t(status?.enabled ? "quit.confirmMessageAutostart" : "quit.confirmMessage"),
+      confirmLabel: t("quit.button"),
+    });
+    if (!ok) return;
+    setQuitting(true);
+    try {
+      await api.settings.quit();
+      toast.success(t("quit.done"));
+    } catch (err) {
+      setQuitting(false);
+      toast.error(err instanceof Error ? err.message : String(err));
+    }
+  };
+
   const note = !status
     ? undefined
     : !status.available
@@ -53,6 +91,28 @@ export function AutostartSettings() {
         disabled={!status?.available || status.foreign || saving}
         onChange={(v) => void change(v)}
       />
+      <SettingsSwitchRow
+        label={t("tray.label")}
+        description={tray && !tray.available ? t("tray.unavailable") : t("tray.desc")}
+        checked={!!tray?.available && tray.enabled}
+        disabled={!tray?.available}
+        onChange={(v) => void changeTray(v)}
+      />
+      <SettingsRow
+        label={t("quit.label")}
+        description={t("quit.desc")}
+        control={
+          <button
+            type="button"
+            data-testid="quit-agenthub"
+            disabled={quitting}
+            onClick={() => void quit()}
+            className="btn-ghost text-xs text-status-danger disabled:opacity-40"
+          >
+            {t("quit.button")}
+          </button>
+        }
+      />
     </SettingsSection>
   );
 }