The public half of AURA's Pattern Composition Engine (PCE) — 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.
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.
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.
A timed arithmetic drill that records every answer — plus sourced research on what these trading-firm numerical screens are actually documented to be.
A night watch for websites: a real browser opens your site as a slow phone and as a desktop, scrolls to the bottom and reports what broke without an error. Proves itself first by catching a bug put back on purpose.
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.
Single-file, zero-dependency guard that fails loud when a check scans zero files. No framework, no deps.
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