macOS: cannot `store modify`

[BA88]

I am unable to get started.
macOS 15.3.1 Sequoia

bash --version

GNU bash, version 5.3.9(1)-release (aarch64-apple-darwin24.6.0)

store version

store version v2.0.0-dev

test files in $HOME

ll ~ | egrep test0

  -rw-r--r--@   1 username    34B May 12 04:16 .test01
  -rw-r--r--@   1 username    13B May 12 04:12 .test02
  -rw-r--r--@   1 username    13B May 12 04:12 .test03
  -rw-r--r--@   1 username    12B May 12 04:12 test04
  -rw-r--r--@   1 username    12B May 12 04:12 test05

initialize store

store init

Initialized store config at /Users/username/dotfiles/.store/config.yaml

cat .store/config.yaml

stores: {}

create store directory 'ABC'

store add ABC

Created directory /Users/username/dotfiles/ABC
Added ABC to config (no target set)

cat .store/config.yaml

stores:
    ABC: {}

ll ABC

  total 0
  drwxr-xr-x@ 2 username    64B May 12 05:32 .
  drwxr-xr-x@ 7 username   224B May 12 05:32 ..

store modify ABC --add-file ~/.test01

Error: store "ABC" not found in config

cat .store/config.yaml

  stores:
      ABC: {}

store add ABC --target ~/.test01

The following files conflict with store symlinks:
  /Users/username/.test01 (file → will be moved to /Users/username/dotfiles/ABC)

Move these files into the store and create symlinks? [y/N] n
Error: aborted due to unresolved conflicts

Am I misunderstanding the terminology store and target?
Thanks.