docs: Rename .gitea to .github to support mirror

.github/README.md

@@ -0,0 +1,26 @@
+# dotfiles
+
+Dotfiles managed as a bare git repo checked out over `$HOME`, for machines
+running CachyOS with KDE Plasma. 
+
+## Bootstrapping a new machine
+
+```sh
+mkdir -p ~/.config/fish/functions
+curl -fsSL https://git.alexion.dev/alexion/dotfiles/raw/branch/main/.config/fish/functions/dot.fish \
+    -o ~/.config/fish/functions/dot.fish
+fish -c 'dot init'
+```
+
+## Commands
+
+| Command                 | Description                                                                              |
+| ----------------------- | ----------------------------------------------------------------------------------------- |
+| `dot help`              | Lists available commands.                                                                |
+| `dot init`              | Bootstraps the dotfiles repo on a new machine.                                           |
+| `dot install <pkgs>`    | Installs the given pacman packages and appends them to the tracked list (`~/.config/dot/packages/pacman`). |
+| `dot install --restore` | Reinstalls every package from the tracked list.                                          |
+| `dot <git>`             | Everything else is passed to `git`.                                                      |
+
+See [CLAUDE.md](../.config/dot/CLAUDE.md) for the `dot` tool's internal
+architecture, bootstrap logic, subcommand dispatch, and test suite.