Was hardcoded to /Users/ising/dotfiles; use ~/dotfiles so the base config
works on non-macOS hosts too.
(Separately, a local uncommitted 'credential.helper = store' was removed from
the live config so git uses the macOS keychain instead of writing
~/.git-credentials in plaintext. That line was never committed, so there is no
diff for it here.)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>