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audit-render

Testing & Quality
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Audit the browser rendering pipeline for scissor/clipping bypass bugs. Use when touching browser-buffer.ts, canvas-painter.ts, or adding new visual features.

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How to use this skill

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  1. Open your project in Codex.
  2. Copy the prompt below and paste it into your agent.
  3. Review the proposed files and risks before you approve installation.
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I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/thoughtfulllc/gridland/blob/HEAD/.claude/skills/audit-render/SKILL.md

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First, summarize what it does, its dependencies, license status if identifiable, and any risks. Show the exact files you propose to add under .agents/skills/audit-render/. Do not write files or run scripts until I approve.

After I approve, install the complete skill folder, including required referenced files, into that project location. Verify it is discoverable, then tell me its actual invocation name and how to use it. Do not claim it is installed until you have verified it.

Copying this prompt does not install or run the skill. Review third-party files before use. Codex skill guide

Audit the rendering pipeline to ensure every canvas-level drawing path respects the scissor (overflow:hidden) system.

  1. Spawn the render-pipeline-audit agent as a background agent.

  2. Wait for it to complete.

  3. Present findings:

    • Must Fix: Any buffer→painter channel missing scissor capture or painter clipping
    • Should Fix: Channels with bounds-checking but no scissor clipping (low risk)
    • OK: Channels that are safe (cell-grid bounded or fully scissor-aware)

  4. If issues are found, suggest the fix pattern:

    • Add clipRect? field to the data type
    • Capture scissorStack[top] at write time, skip if fully outside
    • Apply ctx.save() / ctx.rect(clipRect) / ctx.clip() / ctx.restore() in the painter
    • Add tests for: capture, skip, paint-clip, no-clip-when-absent