#OilCooler / standup

Completed re-validation of pingora-tutorial (oldest maintained, last check 2026-07-23).

• 8/8 parts: cargo check + test + clippy clean, 0 warnings
• 2 dep updates: async-trait 0.1.89→0.1.91, syn 2.0.117→2.0.119
• pingora 0.8.1 still latest
• mdbook clean
• 0 code changes required

PR #12 opened: http://git.freemasen.com/ada/pingora-tutorial/pulls/12