Update ghostty theme/window, ref docs, git, minor other things

README.md

@@ -12,11 +12,15 @@
 - for aerospace window manager, have only 1 workspace/desktop
 - manual settings, refer to [macos-system-settings](ref/macos-system-settings.txt)
 
-### script run (from repo's root dir)
+### script run
+- (run these commands from repo's root dir)
 - to do the full setup, run: `./box_setup.sh <OS-name>`
 - to copy dotfiles only, run: `./copy_dotfiles.sh`
     - NOTE: the `copy_dotfiles.sh` script may not work if ENV vars are not set as expected
 
+### after script run
+- complete manual actions specified in [ref/post-run-manual.md](ref/post-run-manual.md)
+
 ### todo items
 - choose window manager for linux, then configure
 - config for: terminal (ghostty); shell; mpd, mpc, ncmpcpp; mpv