v0.3.0-rc10

- fix(web): AppImage/on-disk dashboard now serves consistently; embedded and
  on-disk dist no longer mix (blank-page fix); embed can't go stale/empty.
- feat(daemon): --app desktop app-window mode (Chromium --app), default for
  GUI launches, off in a terminal / on headless boxes.
- feat(daemon): primary binary renamed to 'orb' (orb-daemon alias retained).