mermint

Process Markdown Mermaid blocks with mermint using README-style output (`<picture>` + light/dark SVGs), preserve source blocks with `--keep-mermaid`, refresh generated SVG assets safely, and run a visual QA loop on rasterized light/dark previews. Use this skill when: 1. User asks to convert Mermaid code blocks in Markdown files 2. User asks to render/update README diagrams like this repo 3. User asks to regenerate `svgs/*-light.svg` and `svgs/*-dark.svg` assets 4. User asks to run idempotent markdown reprocessing with preserved Mermaid source 5. User asks to create or update Mermaid `architecture-beta` diagrams with AWS service icons