Initial import: chezmoi source for CachyOS + Umbriel + Noctalia

Imported from prdlk/dotfiles master (efdd827). Drops the niri, Hyprland/Omarchy,
macOS, and Blume docs-site layers; docs/ is plain Markdown.

dot_config/bash/functions/ghg.bash

@@ -0,0 +1,8 @@
+# ghq get + cd; clone/path logic lives in ~/.local/bin/ghg-clone.
+# (helper is not named ghg: an unrelated cargo binary owns that name)
+ghg() {
+    local dir
+    dir=$(ghg-clone "$@") || return
+    cd "$dir" || return
+    clear && onefetch
+}