Adjust neovim key mappings and themes, add initial dap configs

README.md

@@ -10,7 +10,7 @@
 #### specific prereqs, macos
 - install the package manager, [homebrew](https://brew.sh/)
 - for aerospace window manager, have only 1 workspace/desktop
-- manual settings, refer to [macos-system-settings](ref/macos-system-settings.txt)
+- manual settings, refer to [ref/macos-system-settings](ref/macos-system-settings.txt)
 
 ### script run
 - (run these commands from repo's root dir)
@@ -19,7 +19,7 @@
     - 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)
+- complete manual actions specified in [ref/post-run-manual](ref/post-run-manual.md)
 
 ### todo items
 - choose window manager for linux, then configure