Bounty #4: Add pact replay mismatch summary output

[lizhiming454]

Summary

• adds --replay-summary for human-readable OpenAPI pact replay mismatch triage
• adds --replay-summary-json for CI/chat-ops artifacts
• summarizes failed interactions by method, path, expected/actual status, and response body shape differences
• includes passing and failing replay fixtures under tools/fixtures/

Diagnostic

Build diagnostic: diagnostic/build-d7d5aff8.json

• All 10 modules failed to build due to missing toolchain (cargo, go, npm, javac, ruby, luac, ghc)
• This is expected in this environment without full toolchain installation
• The .logd artifact was generated but is empty due to build environment limitations

Fixes #4

[Soengkit]

Thanks for the PR. I am closing this because Soengkit/zeroeye is only my working fork of the upstream repository, not an official bounty intake or payment queue. The fork parent/source is NemoMi/zeroeye: https://github.com/NemoMi/zeroeye. Please use the upstream owner current process for any submission or claim, and do not post payment details here.