feed-datasource-expert
Expert guidance on implementing paginated feeds and infinite scroll in Flutter using FeedDataSource and PagedFeedDataSource patterns. Covers base feed data source, cursor-based pagination, auto-pagination at length-3, proxy lifecycle with reference counting, feed widget implementation, filtered feeds, event bus integration, and creation with createOnce. Use when building paginated lists, infinite scroll, feed views, or managing proxy lifecycle in feeds.
bosskuai-3d-web-development
Use this for creating immersive 3D websites, WebGL experiences, Three.js/React Three Fiber scenes, scroll-driven 3D animations, GSAP-powered 3D motion, post-processing effects, Spline integrations, interactive particle systems, and Awwwards-quality 3D web experiences.
phoneagent
Control a connected iPhone, iOS simulator, Android emulator, or Android device from macOS through PhoneAgent's JSON-RPC bridge. Use when users ask to automate mobile UI actions, inspect accessibility trees, toggle Settings switches, navigate apps, or capture screenshots by sending RPC methods like get_tree, get_screen_image, get_context, tap_element, enter_text, scroll, swipe, and open_app.
hwc-navigation-content
Build Hotwire navigation and content-discovery flows: Turbo Frame pagination, tabbed navigation, lazy loading, faceted filtering/search, cache lifecycle, scroll restoration, and visit/render control. Prefer this skill when the core problem is request/response navigation state and browser history behavior. Use hwc-forms-validation for form validation and inline edit flows, hwc-realtime-streaming for WebSocket/Turbo Stream push updates, hwc-media-content for image/video/audio features, hwc-ux-feedback for generic loading/progress/transition polish, and hwc-stimulus-fundamentals for Stimulus APIs not centered on navigation.
Data Table Filters
A shadcn registry for building filterable, sortable data tables with infinite scroll and virtualization. Start with the core block, then extend with optional blocks for command palette, cell renderers, sheet panels, store adapters, schema generation, Drizzle ORM helpers, and React Query integration.
agent-device
Automates mobile and simulator interactions for iOS and Android devices. Use when navigating apps, taking snapshots/screenshots, tapping, typing, scrolling, pinching, or extracting UI info on mobile devices or simulators.
choosing-derivedstateof
Use this skill to decide when Jetpack Compose derivedStateOf is the right tool and when it is pure overhead. Covers the "input frequency must exceed output frequency" rule, the mandatory remember { derivedStateOf { } } wrapper, the canonical pitfall of capturing non-state variables by initial value (and the remember(key) fix), and the snapshotFlow alternative for fire-and-forget side effects on derived values. Use when the developer mentions derivedStateOf, scroll-position-driven booleans, threshold checks, firstVisibleItemIndex, "show FAB on scroll", recomposition counts that don't drop after wrapping a value, or asks whether a computed string concatenation should use derivedStateOf.
design-dna
Extract, define, and apply design DNA across three dimensions: design system (tokens), design style (qualitative feel), and visual effects (Canvas, WebGL, 3D, particles, shaders, scroll effects, etc.). Use this skill when: (1) a user wants to see the full 3-dimension design structure/schema, (2) a user provides images, screenshots, or URLs of reference designs and wants them analyzed into a structured JSON profile covering all three dimensions, (3) a user has a Design DNA JSON and content and wants a design generated from it, or (4) any combination of these phases. Triggers on "design DNA", "extract design style", "analyze design", "design tokens from reference", "generate design from JSON", "design system from screenshot", "design profile", "style guide JSON", "visual effects analysis", "design with effects", "3d design analysis".
frontend-ui-animator
Analyze and implement purposeful UI animations for Next.js + Tailwind + React projects. Use when user asks to add animations, enhance UI motion, animate pages/components, or improve visual feedback. Triggers on "add animations", "animate UI", "motion design", "hover effects", "scroll animations", "page transitions", "micro-interactions".
capture-screen
Programmatic screenshot capture on macOS. Find window IDs with Swift CGWindowListCopyWindowInfo, control application windows via AppleScript (zoom, scroll, select), and capture with screencapture. Use when automating screenshots, capturing application windows for documentation, or building multi-shot visual workflows.