Frontend Testing Debugging

Invocation Contract

This skill should work from normal user prompts. Do not require the user to spell out Browser routing, screenshots, report shape, or fallback policy.

Use this skill when the user asks to use the Build Web Apps plugin, web dev plugin, frontend dev plugin, or frontend testing/debugging skill for a rendered frontend change, test, or bug investigation.

Examples that should trigger this full workflow:

• please make an improvement to the web dashboard transaction search area and use the web dev plugin
• use the frontend dev plugin to polish this dashboard
• debug this UI with the Build Web Apps plugin
• test this localhost app and fix the broken interaction

From a brief prompt, infer the target surface from the repo, currently open app/browser URL, nearby files, or running dev server. If the target URL is unclear, inspect the repo scripts and running local ports before asking the user.

For any code change to a rendered frontend surface, do the validation loop by default: