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.

docs/OVERVIEW.md

@@ -61,7 +61,7 @@ Internal build — all rights reserved.
   other its conversation with a prompt box — sending a message resumes it,
   opening never does; **Analyst** in the right panel opens its analysis). A workspace opens on its home: a
   prompt box that starts a new session, Recents, and the workspace's own
-  Instructions, Memory, Context files (picked with + or dragged in from the OS)
+  Instructions, Memory, Context files (picked with + or dragged in from the OS; each is a copy taken at upload, so edit the original and add it again — a Folder is read live)
   and extra Folders, which Claude and Codex sessions start with. Files and
   images dragged onto a terminal or a prompt box are uploaded and attached by
   their saved path.