Initial dotfiles commit

Laptop config: zsh, emacs (with WSL detection for work), ghostty, tmux, ranger,
newsboat, neomutt + mbsync + msmtp (Outlook OAuth2), neomutt signature.
Work config: emacs with C#/TS/JS/CSS/HTML dev settings for WSL.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

laptop/.config/ghostty/config

@@ -0,0 +1,15 @@
+font-family = Hack Nerd Font Mono
+font-size = 11
+theme = "Catppuccin Mocha"
+cursor-style = block
+
+# Unbind alt+number tab switching so weechat can use them
+keybind = alt+one=unbind
+keybind = alt+two=unbind
+keybind = alt+three=unbind
+keybind = alt+four=unbind
+keybind = alt+five=unbind
+keybind = alt+six=unbind
+keybind = alt+seven=unbind
+keybind = alt+eight=unbind
+keybind = alt+nine=unbind