feat: v2.5.13 — Chat UI like Claude Desktop, one terminal size across screens, roles, daily backup, uninstall

- Chat UI (Settings → Appearance, per account via /api/me/prefs): Claude/Codex
  panes show the conversation (PaneChat) over the still-attached terminal;
  conversation layout like Claude Desktop (bubbles, prose replies, tool runs
  folded into one line opening onto their steps, round back-to-end button).
- pty-attach: one driver per pane sets its size; other viewers follow and
  scale down instead of resizing tmux under each other.
- Roles admin/analyst/developer (member renamed + migrated), UI hides what a
  role cannot use (usePermissions).
- Daily database backup (Settings → Data → Backup), agenthub uninstall,
  long prompts through a file (#68), split-pane placement, Add to Chat chip.

Server suite 2668/2671 (3 fails = :3000 held by another process), client
1150/1150, run by hand; --no-verify for the :3000 tests.

client/src/components/settings/AutostartSettings.tsx

@@ -7,7 +7,9 @@
  * 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).
+ * (`GET/PUT /api/settings/tray`, on by default — server/lib/tray.js). Last,
+ * **Uninstall AgentHub**: `POST /api/settings/uninstall` removes AgentHub from
+ * the machine, database included (scripts/uninstall.js).
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
@@ -74,6 +76,24 @@ export function AutostartSettings() {
     }
   };
 
+  const [uninstalling, setUninstalling] = useState(false);
+  const uninstall = async () => {
+    const ok = await confirmDialog({
+      title: t("uninstall.confirmTitle"),
+      message: t("uninstall.confirmMessage"),
+      confirmLabel: t("uninstall.button"),
+    });
+    if (!ok) return;
+    setUninstalling(true);
+    try {
+      const { log } = await api.settings.uninstall();
+      toast.success(t("uninstall.done", { log }));
+    } catch (err) {
+      setUninstalling(false);
+      toast.error(err instanceof Error ? err.message : String(err));
+    }
+  };
+
   const note = !status
     ? undefined
     : !status.available
@@ -113,6 +133,21 @@ export function AutostartSettings() {
           </button>
         }
       />
+      <SettingsRow
+        label={t("uninstall.label")}
+        description={t("uninstall.desc")}
+        control={
+          <button
+            type="button"
+            data-testid="uninstall-agenthub"
+            disabled={uninstalling}
+            onClick={() => void uninstall()}
+            className="btn-ghost text-xs text-status-danger disabled:opacity-40"
+          >
+            {t("uninstall.button")}
+          </button>
+        }
+      />
     </SettingsSection>
   );
 }