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__/SettingsHub.test.tsx

@@ -3,7 +3,8 @@
  * @description The Settings page shell: a path picks its section, `/settings`
  * and the legacy `?tool=` / `#ai-tools` links redirect to the path form, an
  * unknown section falls back to Appearance, a disabled tool has no page while an
- * installed, enabled catalog tool gets one, the mobile
+ * installed, enabled catalog tool gets one — as a tab on AI tools, not a nav
+ * item —, the mobile
  * select navigates, and the search filters the nav, opens the first match on
  * Enter, clears on Escape and is focused by Ctrl+F (a second press selects its
  * text), its result list deep-links a row's sub-tab, an anchor in the URL is
@@ -159,13 +160,27 @@ describe("SettingsHub", () => {
     view.tools[1] = tool("codex", { launcher: "codex", enabled: false });
     renderAt("/settings/agents/gemini");
     expect(await screen.findByTestId("tool-gemini")).toBeInTheDocument();
+    const tabs = within(screen.getByRole("tablist", { name: "AI tool settings" }))
+      .getAllByRole("tab")
+      .map((a) => a.textContent);
+    expect(tabs).toEqual(["All tools", "Claude Code", "Gemini"]);
+  });
+
+  it("shows tool pages as tabs on AI tools, not as nav items", async () => {
+    renderAt("/settings/agents/codex");
+    expect(await screen.findByTestId("codex-config")).toBeInTheDocument();
     const links = within(nav())
       .getAllByRole("link")
       .map((a) => a.textContent);
-    expect(links).toContain("Claude Code");
     expect(links).not.toContain("Codex");
-    expect(links).not.toContain("Qwen");
-    expect(links).not.toContain("Aider");
+    expect(within(nav()).getByRole("link", { name: "AI tools" })).toHaveAttribute(
+      "aria-current",
+      "page"
+    );
+    expect(screen.getByRole("tab", { name: "Codex" })).toHaveAttribute("aria-selected", "true");
+    fireEvent.click(screen.getByRole("tab", { name: "All tools" }));
+    expect(screen.getByTestId("where").textContent).toBe("/settings/agents");
+    expect(screen.getByTestId("ai-tools")).toBeInTheDocument();
   });
 
   it("navigates from the mobile select", async () => {