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.

server/__tests__/pty-attach.test.js

@@ -42,6 +42,7 @@ describe("pty-attach", () => {
   beforeEach(() => {
     fakePty = makeFakePty();
     ptyAttach.__setSpawnImpl(() => fakePty);
+    ptyAttach.__resetGroups();
     tmux.__setExecImpl(() => "");
   });
   afterEach(() => {
@@ -164,6 +165,44 @@ describe("pty-attach", () => {
     assert.equal(closed, true);
   });
 
+  it("holds a second viewer at the first one's size until it takes the lead", () => {
+    // Two browsers of different sizes on one pane: tmux's `window-size latest`
+    // resized the window under whichever was not typing. One drives; the other
+    // renders the driver's grid.
+    const ptys = [];
+    ptyAttach.__setSpawnImpl((_f, _a, opts) => {
+      const p = makeFakePty();
+      p.opts = opts;
+      ptys.push(p);
+      return p;
+    });
+    const resize = (ws, cols, rows, drive) =>
+      ws.__emitter.emit(
+        "message",
+        Buffer.from(JSON.stringify({ type: "resize", cols, rows, drive })),
+        {
+          binary: false,
+        }
+      );
+    const a = makeFakeWs();
+    const b = makeFakeWs();
+    ptyAttach.attach(a, "agenthub-lane-1", { cols: 200, rows: 50 });
+    ptyAttach.attach(b, "agenthub-lane-1", { cols: 100, rows: 30 });
+    assert.deepEqual([ptys[1].opts.cols, ptys[1].opts.rows], [200, 50]);
+    assert.deepEqual(JSON.parse(b.__sent[0].data), { type: "size", cols: 200, rows: 50 });
+
+    resize(b, 100, 30); // its own fit, not a takeover: nothing moves
+    assert.equal(ptys[1].__writes.length, 0);
+
+    resize(b, 100, 30, true); // a keystroke in b
+    assert.deepEqual(ptys[1].__writes.at(-1), { resize: [100, 30] });
+    assert.deepEqual(ptys[0].__writes.at(-1), { resize: [100, 30] });
+    assert.deepEqual(JSON.parse(a.__sent.at(-1).data), { type: "size", cols: 100, rows: 30 });
+
+    b.__emitter.emit("close"); // the driver leaves: the rest size themselves
+    assert.deepEqual(JSON.parse(a.__sent.at(-1).data), { type: "lead" });
+  });
+
   it("kills the PTY attach process when the WS connection closes", () => {
     const ws = makeFakeWs();
     ptyAttach.attach(ws, "agenthub-lane-1", { cols: 80, rows: 24 });