The worktree had been sitting on a partial `cargo fmt` run: 15 files reflowed,
mostly multi-line derive attributes collapsed onto one line, with no semantic
change anywhere in the diff. It was never finished -- `cargo fmt --check` still
flagged resident_readiness.rs, which the pass had not reached.
Completed rather than reverted, since the formatting is what rustfmt produces
and leaving it half-applied is the only bad option. 16 test binaries pass.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
