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/drydock/config.toml

@@ -0,0 +1,4 @@
+# drydock: scan the ghq root (~/Code/<host>/<owner>/<repo>, depth 3) directly,
+# not the ~/Projects symlink farm. Everything else stays at drydock's defaults
+# (`drydock config show` prints them).
+roots = ["~/Code"]