- Use str.removesuffix(".vcf") instead of str.replace(".vcf", "") in both
_resolve_object_name and list_contacts so a filename like "alice.vcf.backup"
isn't mangled; the two transforms stay consistent to preserve the
surface-then-resolve round-trip.
- Add update_contact resolution tests mirroring the delete coverage:
targets the real no-extension path, and falls back to <uid>.vcf when
resolution finds nothing.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>