Recover missing Brewfile and enhance system updates

- Add missing Brewfile (found in home directory)
- Add bashrc and FZF configurations to dotfiles
- Install mas CLI for Mac App Store management
- Enhance sysupdate() with moon phase and MAS updates
- Update symlinks script for all shell configs

🖖 Generated with [Claude Code](https://claude.ai/code)

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

shell/.fzf.zsh

@@ -0,0 +1,7 @@
+# Setup fzf
+# ---------
+if [[ ! "$PATH" == */Users/davidglidden/.fzf/bin* ]]; then
+  PATH="${PATH:+${PATH}:}/Users/davidglidden/.fzf/bin"
+fi
+
+source <(fzf --zsh)