docs(cli): call out Ctrl+Enter for Windows Terminal users

Windows Terminal captures Alt+Enter at the terminal layer (fullscreen
toggle), so documenting 'Alt+Enter or Ctrl+J' without qualification
leaves stock Windows Terminal users with no working newline key they
can discover from the docs alone.

- Main keybindings row: note Alt+Enter is intercepted on WT and direct
  users to Ctrl+Enter / Ctrl+J instead.
- Shift+Enter compatibility table: split 'stock Windows Terminal' from
  Windows Terminal Preview 1.25+ (which added Kitty protocol support
  and works with the keybinding from this PR once enabled).
- Add AUTHOR_MAP entry for ra2157218@gmail.com -> Abd0r so the salvage
  commit passes the email-mapping CI gate.

scripts/release.py

@@ -57,6 +57,7 @@ AUTHOR_MAP = {
     "128259593+Gutslabs@users.noreply.github.com": "Gutslabs",
     "50326054+nocturnum91@users.noreply.github.com": "nocturnum91",
     "223003280+Abd0r@users.noreply.github.com": "Abd0r",
+    "ra2157218@gmail.com": "Abd0r",
     "abdielv@proton.me": "AJV20",
     "mason@growagainorchids.com": "masonjames",
     "ytchen0719@gmail.com": "liquidchen",