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/__tests__/Users.test.tsx

@@ -66,7 +66,7 @@ function renderPage() {
 beforeEach(() => {
   for (const fn of Object.values(users)) fn.mockReset();
   users.list.mockResolvedValue({
-    users: [row(1, "boss", "admin"), row(2, "mia", "member")],
+    users: [row(1, "boss", "admin"), row(2, "mia", "developer")],
   });
   users.audit.mockResolvedValue({ entries: [] });
 });
@@ -76,7 +76,7 @@ describe("Users page", () => {
     authState = { mode: "local" };
     renderPage();
     expect(await screen.findByTestId("home")).toBeTruthy();
-    authState = { mode: "server", user: { id: 2, username: "mia", role: "member" } };
+    authState = { mode: "server", user: { id: 2, username: "mia", role: "developer" } };
     renderPage();
     expect((await screen.findAllByTestId("home")).length).toBeGreaterThan(0);
     expect(users.list).not.toHaveBeenCalled();
@@ -94,7 +94,7 @@ describe("Users page", () => {
   it("adds a user only with the admin's own password", async () => {
     authState = { mode: "server", user: { id: 1, username: "boss", role: "admin" } };
     users.create.mockResolvedValue({
-      user: { id: 9, username: "neo", role: "member", disabled: false },
+      user: { id: 9, username: "neo", role: "developer", disabled: false },
     });
     const ue = userEvent.setup();
     renderPage();
@@ -111,7 +111,7 @@ describe("Users page", () => {
     await ue.click(confirm);
     await waitFor(() =>
       expect(users.create).toHaveBeenCalledWith(
-        { username: "neo", password: "neo-pass-123", role: "member" },
+        { username: "neo", password: "neo-pass-123", role: "developer" },
         "boss-pass"
       )
     );