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.

.chezmoiexternals/tmux-palette.toml

@@ -0,0 +1,6 @@
+[".config/tmux-palette"]
+    type = "git-repo"
+    url = "https://github.com/prdlk/tmux-palette.git"
+    refreshPeriod = "168h"
+    [".config/tmux-palette".pull]
+        args = ["--ff-only"]