docs: add project-level `README.md`

.github/.gitignore

@@ -0,0 +1,5 @@
+# ignore everything...
+/*
+!.gitignore
+# ...except for these:
+!README.md

.github/README.md

@@ -0,0 +1,14 @@
+# \~/.\*
+
+This repository lives at `~/`, and contains
+[dotfiles](https://wiki.archlinux.org/title/Dotfiles).
+
+These dotfiles enable a terminal-first, near-exclusively mouseless workflow on
+macOS, especially when used with a
+[`FuthakBloom`](https://github.com/jxddk/FuthakBloom) keyboard.
+
+Portability, compatibility, and broad appeal are not this project's aims, but
+elegance, readability, and piquing niche interest certainly are. That is to say,
+cloning this repository into your home directory probably won't get you
+anywhere, but poking around and pilfering interesting snippets could turn out to
+be a great use of your time.

.gitignore

@@ -1,3 +1,7 @@
 # ignore everything...
 /*
 !.gitignore
+# ...except for these:
+# Anything in these subfolders
+# These should have their own .gitignore!
+!.github/