An operational advisor for self-hosted infrastructure — Mastodon, mail, home clouds. Runs four falsifiable self-tests before every emission and refuses to speak when it cannot verify itself; silence and open deferral are first-class outputs. Zero dependencies, Apache-2.0. pip install aura-pce; aura-pce prove
把 PDF 复习资料变成黑幕自测网页：自动识别原文的黑体重点与下划线填空并遮住，鼠标悬停显示答案。单文件 HTML，自带批注、手绘与撤销。
UI/UX design makeover skill for Claude Code. Audits your app, proposes complete directions, builds, and self-tests before you see the result. Stops AI-generic UI cold.
Does your agent system keep its promises? Single-file Python health checks where 'unmeasurable' is its own state — never green. Plant failures, watch the scale catch them. MIT.
A Claude Code metaskill that enforces a mandatory self-test → reflect → rework → quality-gate closed loop before any delivery, making the model accountable for its own output quality.
Practical shortcuts and science-backed techniques for learning German faster and remembering longer.
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