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/lib/data-transfer.js

@@ -36,10 +36,6 @@
 const EXPORT_FORMAT = "agenthub-export";
 const EXPORT_VERSION = 1;
 
-// Tables serialized into the bundle. Order matters for restore (parents before
-// children); FK checks are deferred to COMMIT anyway (see importExportBundle).
-const SESSION_CHILD_TABLES = ["agents", "events", "token_usage", "workflows"];
-
 /**
  * Build the full export bundle from the live database.
  *
@@ -263,7 +259,6 @@ module.exports = {
   exportableRun,
   EXPORT_FORMAT,
   EXPORT_VERSION,
-  SESSION_CHILD_TABLES,
   buildExportBundle,
   importExportBundle,
   ImportFormatError,