frontend▌

Design and implement append-only event stores for event-sourced systems. \n \n Covers architecture patterns, technology comparison (EventStoreDB, PostgreSQL, Kafka, DynamoDB), and core requirements including append-only semantics, ordering, versioning, and subscriptions \n Includes production-ready PostgreSQL schema with indexing strategy, snapshots table, and subscription checkpoints for managing consumer state \n Provides Python event store implementation with optimistic concurrency control, s

Which rune? Props: $props() | Bindable: $bindable() | Computed: $derived() | Side effect: $effect() | State: $state()

$23

Software Mansion's production patterns for React Native apps on the New Architecture.

react-19

This skill provides a structured workflow for translating Figma designs into production-ready code with pixel-perfect accuracy. It ensures consistent integration with the Figma MCP server, proper use of design tokens, and 1:1 visual parity with designs.

Automated frontend code review against a multi-category checklist, supporting both pending-change and targeted file reviews. \n \n Triggers on user requests to review frontend files ( .tsx , .ts , .js ) and applies a canonical checklist across Code Quality, Performance, and Business Logic categories \n Supports two review modes: pending-change review for staged/working-tree files before commit, and file-targeted review for specific named files \n Flags violations with urgency metadata (Urgent vs

45 React and Next.js performance rules organized by impact, from eliminating waterfalls to advanced patterns. \n \n Covers 8 priority categories spanning async optimization, bundle size, server/client data fetching, re-renders, rendering, JavaScript performance, and advanced patterns \n Each rule includes explanation, before/after code examples, and context; rules prefixed by category (e.g., async- , bundle- , server- ) for easy reference \n Prioritizes critical issues like waterfall elimination

Opinionated design system for creating distinctive, production-grade frontend interfaces that avoid generic AI aesthetics. \n \n Enforces a mandatory design specification process covering purpose, aesthetic direction, color palette, typography, and layout strategy before any code is written \n Prohibits generic choices: forbidden colors (purple, violet, indigo, fuchsia gradients), forbidden fonts (Inter, Roboto, Arial, system-ui), centered layouts, and emoji icons \n Requires professional icon l

This skill enables AI agents to perform a comprehensive visual design and aesthetics evaluation of digital interfaces, analyzing elements like typography, color palettes, spacing, visual hierarchy, and overall design quality.