productivity▌

23 production-ready engineering skills organized into core engineering, AI/ML/Data, and specialized tools.

Build Progressive Web Apps that work offline, install like native apps, and deliver fast, reliable experiences. \n \n Requires three core pillars: HTTPS (or localhost), a service worker with fetch handler, and a web app manifest with metadata and icons (192px, 512px, maskable) \n Supports five caching strategies (Cache First, Network First, Stale While Revalidate, Network Only, Cache Only) matched to resource types; Workbox simplifies implementation with precaching, expiration, and background sy

$22

Performant responsive images with srcset, sizes, lazy loading, and modern formats. \n \n Covers srcset width descriptors, sizes attribute patterns, and lazy loading rules optimized for Core Web Vitals (LCP, CLS) \n Includes picture element patterns for art direction, WebP/AVIF fallback chains, and fetchpriority configuration for hero images \n Provides six documented error patterns with fixes: missing width/height attributes, lazy-loading LCP images, density descriptors, missing alt text, aspect

Role: Portfolio Experience Designer

Create production-ready Expo React Native apps with:

Use this skill to display markdown files in a dedicated panel with rich formatting and live file watching.

Real-user dogfooding with emotional friction tracking, click efficiency counting, and resilience testing to produce ranked audit reports. \n \n Supports three operating modes: UX Walkthrough (persona-based task completion), QA Sweep (systematic feature testing), and Targeted Check (focused area validation) \n Tracks emotional friction signals (trust, anxiety, confusion), click efficiency, form resilience (mid-navigation, back button, refresh), and asks \"would I come back?\" \n Three depth level

Research grant writing is the process of developing competitive funding proposals for federal agencies and foundations. Master agency-specific requirements, review criteria, narrative structure, budget preparation, and compliance for NSF (National Science Foundation), NIH (National Institutes of Health), DOE (Department of Energy), and DARPA (Defense Advanced Research Projects Agency) submissions.

Creates comprehensive handoff documents that enable fresh AI agents to seamlessly continue work with zero ambiguity. Solves the long-running agent context exhaustion problem.