Add Arch Wayland dotfiles: sway/waybar/kitty/nvim/zsh, idempotent installer

Auto-adapts sway workspace routing to however many monitors are
connected (laptop vs. desktop) instead of hardcoding output names.

home/.zsh.d/30-keybindings.zsh

@@ -0,0 +1,16 @@
+bindkey -e
+bindkey '^[[H' beginning-of-line
+bindkey '^[[F' end-of-line
+bindkey '^[[3~' delete-char
+bindkey '^R' history-incremental-search-backward
+
+# Word-wise editing.  The CSI bindings are emitted by Kitty (and many other
+# terminals); the Meta bindings keep the same actions working elsewhere.
+bindkey '^[b' backward-word
+bindkey '^[f' forward-word
+bindkey '^[[1;5D' backward-word
+bindkey '^[[1;5C' forward-word
+
+bindkey '^[^?' backward-kill-word
+bindkey '^[[127;5u' backward-kill-word
+bindkey '^[[3;5~' kill-word