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/pages/Users.tsx

@@ -25,7 +25,7 @@ import { ConfirmModal } from "../components/ConfirmModal";
 import { SettingsSection } from "../components/settings/SettingsRow";
 
 type Role = AuthUser["role"];
-const ROLES: Role[] = ["admin", "analyst", "member"];
+const ROLES: Role[] = ["admin", "analyst", "developer"];
 
 type DialogKind = "add" | "role" | "disable" | "enable" | "password" | "workspace";
 type Dialog = { kind: DialogKind; user?: ServerUserUsage };
@@ -61,11 +61,11 @@ export function Users() {
   const [spinning, refresh] = useSpin(load);
 
   useEffect(() => {
-    if (me && me.role !== "member") void load();
+    if (me && me.role !== "developer") void load();
   }, [me, load]);
 
-  // Local mode, or a member: there is no Users page for them.
-  if (!me || me.role === "member") return <Navigate to="/" replace />;
+  // Local mode, or a developer: there is no Users page for them.
+  if (!me || me.role === "developer") return <Navigate to="/" replace />;
 
   return (
     <div className="animate-fade-in space-y-6">
@@ -265,7 +265,7 @@ function AccountDialog({
   const name = user?.username ?? "";
   const [username, setUsername] = useState("");
   const [password, setPassword] = useState("");
-  const [role, setRole] = useState<Role>(user?.role ?? "member");
+  const [role, setRole] = useState<Role>(user?.role ?? "developer");
   const [laneId, setLaneId] = useState<number | null>(null);
   const [lanes, setLanes] = useState<Lane[] | null>(null);
   const [current, setCurrent] = useState("");