HTML diagrams: self-contained, accessible visual models (topology, sequence, state, hierarchy…)

Prerequisites: nothing to install — the skill is diagram guidance your agent follows on explicit invocation; works wherever an HTML file can be opened Install "HTML diagrams: self-contained, accessible visual models" for me. It gives my agent @plannotator's html-diagram specialist: on explicit invocation, pick the right diagram model for the question (topology, sequence, process, state, hierarchy, timeline, matrix, quantitative) and the right rendering method, then deliver one dependency-free HTML file with inline CSS/JS, keyboard-accessible controls and reduced-motion support — verified at wide and narrow widths. MIT-licensed. Repository: https://github.com/plannotator/effective-html/blob/main/skills/html-diagram/SKILL.md 1. Fetch the SKILL.md file (and any helper files) from the repository path into a temporary folder and summarize what it does in one or two sentences. 2. Safety check: review the SKILL.md and scripts for anything suspicious (unexpected network calls, shell commands, credential harvesting). This repo should contain zero secrets in code, credentials only via the secure vault, allowed hosts declared in the SKILL.md. Verify that holds here; STOP on any red flag and tell me. 3. Install it as a skill: copy SKILL.md and its helper files into the agent's skills directory, in a folder named "html-diagram". 4. Verify with no network calls: frontmatter valid, files in place. 5. Report what was installed, where, and what I still need to do myself (e.g. nothing — just invoke it explicitly, e.g. "html-diagram: show the request flow", since it won't fire on general requests). GitHub is optional: if I have a GitHub account or the gh CLI, you may use it; otherwise public access is fine. Never require it unless it's in the prerequisites above. Rules: don't touch anything outside the temp folder and the install target. If anything looks off, stop and ask me.