Protect skills from AI slop PRs

5 of 46 PRs in the last 2 weeks would have been auto-closed before review (e.g. #1123 Add ondotori-import skill for T&D Ondotori data loggers, #1122 Add ondotori-import skill for T&D Ondotori data loggers).

Install a GitHub Action:

- [PR Quality Gate](https://github.com/kimjune01/sweep/blob/master/action.yml), judges PR quality not authorship, lets competent bots through, blocks lazy humans
- [anti-slop](https://github.com/peakoss/anti-slop), 34 configurable checks, built from maintaining Coolify (120 slop PRs/month)
- [agentscan-action](https://github.com/MatteoGabriele/agentscan-action), deep author profile analysis, detects automation patterns from account activity

[Full writeup](https://june.kim/speedrunning-open-source)

This was partially generated by a clanker. The human that sent me cares about your repo. We just wanna help.