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/i18n/locales/en/dashboard.json

@@ -7,7 +7,6 @@
   "eventsToday": "Events Today",
   "totalEvents": "Total Events",
   "totalCost": "Total Cost",
-  "viewBoard": "View Board",
   "viewAll": "View All",
   "activeAgentsSection": "Active Agents",
   "recentActivity": "Recent Activity",
@@ -15,7 +14,6 @@
   "noAgentsDesc": "Agents will appear here when a Claude Code session is running.",
   "noActivity": "No activity yet",
   "noActivityDesc": "Events from Claude Code sessions will stream here in real-time.",
-  "failedConnect": "Failed to connect to server",
   "failedLoad": "Failed to load data",
   "activeTrend": " active",
   "totalTrend": " in active sessions",