Save feedback becomes a body-level toast; popup is GNEXUS CREDS again ...

- Settings-drawer save feedback used to live at the bottom of the drawer
  body: clipped at real popup height and destroyed 800ms later when the
  drawer node was removed. Success now rides a kit toast on document.body
  (outlives the drawer, always in viewport); the drawer closes 1600ms in.
- All alert wraps moved to the top of the drawer body so errors never sit
  under the fold.
- Kit Drawer quirk fixed at the call sites: close() leaves a-hide on the
  element and the class survives the node removal, so reopening the
  settings drawer slid the panel back out of view — every reopen clears
  the stale class first.
- Titles: static HTML title + runtime localized popupTitle (new pack
  string, en/uk/ru); manifest renamed GNEXUS CREDS; version 0.2.3 with
  fresh dist zips and pack v25.

Co-Authored-By: Claude Code <noreply@anthropic.com>