Performance Regression Debugging

Act as an active outline partner who develops structure collaboratively. Use when developing, iterating, or improving story outlines. Generates scene beats, character arcs, plot structures, and exploratory prose samples. Contrasts with story-collaborator which drafts finished prose.

Implement Progressive Web App features for React and Svelte projects. This skill should be used when the user asks to 'make a PWA', 'add offline support', 'create a service worker', 'fix caching issues', or wants installable web apps. Keywords: PWA, service worker, offline, manifest, caching, installable, Workbox, vite-pwa.

Generates engaging long-form blog posts from source materials or a topic brief. Supports listicles, editorial tutorials, how-to articles, narrative essays, and thought leadership. Handles research, outlining, drafting, on-page SEO, and polishing. Use when "write a blog post about this", "create a listicle", "turn this research into an article", "write an editorial tutorial", "draft a thought leadership piece", or "write a how-to article". For short product or marketing copy (headlines, CTAs, landing pages, onboarding strings) use copywriting; for slide decks use presentation-creator; for API references, READMEs, or how-to docs in a documentation site use docs-writing. This skill does on-page SEO for the post it writes; for sitemaps, metadata, redirects, or site-wide SEO use optimise-seo.

Use when upgrading a Rsbuild 1.x project to v2, including dependency and configuration updates.

Extract and document a writer's distinctive voice patterns for consistent reproduction. Use when you need to capture writing voice, analyze writing style, create a voice guide, or write in someone's established style. Keywords: voice, tone, style, writing analysis, fingerprint.

Write follow-up emails that re-engage without being annoying. Uses proven psychology for follow-up sequences. 42% of replies come from follow-ups.