Verify MQTT Viewer stays smooth under heavy broker load using the local flood harness. Use before merging changes to message handling, the topic tree, history, or the graph view, or when the user says "check performance", "run the flood test", or reports the app lagging on busy brokers.
Add or update the in-app "What's new" changelog for MQTT Viewer. Use when the user says "update the changelog", "add a changelog entry", "record this in what's new", "note this for the next release", after merging a user-facing PR, or when promoting the unreleased notes at release time.
Publish a MQTT Viewer release end to end. Use when the user says "release", "cut a release", "publish vX.Y.Z", "ship it", or "do a release". First drafts the changelog for user approval, then promotes it, creates the GitHub release that triggers the mac/windows/linux build+sign+portal workflows, watches them, and hands off the final go-live step.
Add a new component to the design-system library, or formalize an existing one โ scaffold its colocated .spec.json, classify its tier, author a Storybook story, and link it to Figma. Use when the user says "add X to the library", "create a story for X", "formalize this component", "/ds-add-component", or when authoring through the COMPONENT_CHECKLIST.
Diff the Figma component library against the MQTT Viewer frontend and produce a handover doc listing exactly what code needs to change. Use when the user says "check Figma for changes", "what drifted", "generate a handover", "sync from Figma", or after a design update. This skill DETECTS and DOCUMENTS only โ it does not edit component code (that's /ds-implement-handover).
Implement a Figmaโcode handover doc โ apply the listed changes to Svelte components, update their colocated .spec.json and stories, and get pnpm ds:validate green. Use when the user says "implement the handover", "apply the changes doc", "do the sync", or points at a file in frontend/src/design-system/changes/. This skill EDITS code; it assumes the handover was already produced by /ds-figma-handover.