7a4c2d52b1
Remove the home-directory dotfile paths that predate the XDG layout. Search order is now: CWD → ~/.config/trx-rs/ → /etc/trx-rs/, checked for both the combined trx-rs.toml and the per-binary flat file at each tier. Update doc comments and tests accordingly. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> Signed-off-by: Stan Grams <sjg@haxx.space>