• Hotfix for "engine request failed" on huge folder deletes/copies.
  Deleting (or copying / moving) a folder with tens of thousands of
  files on the PS5 surfaced as engine request failed: error sending request for url (http://127.0.0.1:19113/api/ps5/fs/delete) after
  about a minute — even though the operation was still running and
  eventually succeeded on the console. Cause: the desktop app's
  HTTP client to its own embedded engine had a 60-second ceiling
  that wasn't long enough for big-tree operations (the PS5 needs
  many minutes to walk and unlink tens of thousands of inodes).
  v2.18.4 raises the ceiling to one hour for the three destructive
  endpoints (fs/delete, fs/copy, fs/move), matching the
  engine's own internal deadline. Other endpoints stay at 60 s so
  a wedged sidecar still surfaces fast.
• No payload changes needed; this is a desktop-app-only fix.