Document aspirational features

README.md

@@ -5,3 +5,36 @@
 A [`git-worktree(1)`][git-worktree] manager.
 
 [git-worktree]: https://git-scm.com/docs/git-worktree/en
+
+## Features
+
+(This is a TODO list.)
+
+A normal Git checkout looks like this:
+
+```
+my-repo/
++ .git/
++ README.md
++ ...
+```
+
+A worktree checkout looks like this:
+
+```
+my-repo/
++ main/
+  + .git/
+  + README.md
+  + ...
++ my-feature-branch/
+  + ...
+```
+
+- [ ] Convert a Git checkout to a worktree checkout.
+- [ ] Clone a repo into a worktree, using the main branch name from the remote.
+- [ ] Add a worktree. The worktree should be associated with the main upstream
+  branch, unless another is given (rather than the default of the
+  currently-checked-out branch).
+  - [ ] Copy over files, like `.envrc` or `.nvim.lua`.
+- [ ] Remove a worktree. (This will just be an alias for `git worktree remove`.)