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/routes/run.js

@@ -476,8 +476,6 @@ router.delete("/:id", (req, res) => {
 });
 
 module.exports = router;
-module.exports.__sameOriginGuard = sameOriginGuard;
-module.exports.__sanitiseCwd = sanitiseCwd;
 // Shared with routes/lanes.js: lane actions spawn processes through the same
 // run-spawner, so they must sit behind the same loopback/same-origin check.
 module.exports.sameOriginGuard = sameOriginGuard;