[argszero]

Summary

Fix the failing CI formatting check (cargo fmt --check) on main after the host's push of commits 63fc76f (fix(mail)) and 8ac018b (feat(auth)) — both introduced code that was not cargo fmt-formatted:

• src/mail.rs:62 — .send(&email) chain formatting
• src/routes/mod.rs:1288 — multi-line conn.execute(...) formatting

Run cargo fmt and commit the result.

Verification

• cargo fmt --check clean
• cargo test — 132 passed, 0 failed
• cargo clippy -- -D warnings clean

This unblocks CI on main (run 32385762067).