The release workflow's `cargo fmt --check` gate failed on the Protocol 2.0
additions: upsert_guild/upsert_house signatures and their call sites in
main.rs exceeded rustfmt's default width. Reformatted with `cargo fmt` — no
behavioral change. `cargo fmt --check`, `cargo check`, and `cargo test` all
clean.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
