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Architectural reasoning framework: requirements analysis, trade-off evaluation, and ADR-based decision documentation. NOT a pattern catalog, but a thinking framework. Use when designing system architecture, choosing patterns, or making structural decisions.

Testing patterns and best practices including unit tests, integration tests, mocking, and test organization. Use when writing tests or setting up testing infrastructure.

Use when writing or changing tests, adding mocks, or tempted to add test-only methods to production code - prevents testing mock behavior, production pollution with test-only methods, and mocking without understanding dependencies

Use when creating or developing anything, before writing code or implementation plans - refines rough ideas into fully-formed designs through structured Socratic questioning, alternative exploration, and incremental validation

Structured task planning with clear breakdowns, dependencies, and verification criteria. Use when implementing features, refactoring, or any multi-step work.

Use when creating or editing skills, before deployment, to verify they work under pressure and resist rationalization - applies RED-GREEN-REFACTOR cycle to process documentation by running baseline without skill, writing to address failures, iterating to close loopholes

Test-Driven Development workflow with RED-GREEN-REFACTOR cycle. Use when writing new features or fixing bugs to ensure code quality and test coverage.

Game design fundamentals, GDD templates, player psychology, game balancing, and progression systems. Use when designing game mechanics, writing design documents, or balancing gameplay.

Use when creating new skills, editing existing skills, or verifying skills work before deployment - applies TDD to process documentation by testing with subagents before writing, iterating until bulletproof against rationalization

Captures session learnings, decisions, and context to a markdown file for future agent ramp-up. Use when user says "ppage", "page context", "save context", "capture learnings", or before ending a substantial work session.

This skill should be used when the user asks to "update README", "update context files", "init context", "create CLAUDE.md", "update CLAUDE.md", "update AGENTS.md", "update DOCS.md", "generate documentation", "API documentation", or mentions project documentation, context files, or markdown documentation workflows.

Use this skill when the user asks to add documentation, add docs, add references, or install documentation about Neon. Adds Neon best practices reference links to project AI documentation (CLAUDE.md, AGENTS.md, or Cursor rules). Does not install packages or modify code.

Writing content across different platforms and styles. This skill should be used when creating blog posts, LinkedIn posts, X/Twitter threads, technical documentation, or other written content. It intelligently selects the appropriate writing style based on the platform, audience, and content type, then applies that style consistently throughout the piece.

Use this skill when creating, improving, or optimizing prompts for Claude. Applies Anthropic's best practices for prompt engineering including clarity, structure, consistency, hallucination reduction, and security. Useful when users request help with writing prompts, improving existing prompts, reducing errors, increasing consistency, or implementing specific techniques like chain-of-thought, multishot prompting, or XML structuring.

Use when writing or changing tests, adding mocks, or tempted to add test-only methods to production code - prevents testing mock behavior, production pollution with test-only methods, and mocking without understanding dependencies

System architecture and technical design specialist

Z.AI CLI providing:- Vision: image/video analysis, OCR, UI-to-code, error diagnosis (GLM-4.6V)- Search: real-time web search with domain/recency filtering- Reader: web page to markdown extraction- Repo: GitHub code search and reading via ZRead- Tools: MCP tool discovery and raw calls- Code: TypeScript tool chainingUse for visual content analysis, web search, page reading, or GitHub exploration. Requires Z_AI_API_KEY.

Format and clean up markdown documents following best practices

帮助用户按照 astro-koharu 博客的规范创建新博文。自动生成正确的 frontmatter 结构、选择合适的分类路径，并提供 Markdown 内容框架建议。使用场景：写一篇博文、创建新文章、写文章、写博客、new post、create blog post。

Creating interactive data visualisations using d3.js. This skill should be used when creating custom charts, graphs, network diagrams, geographic visualisations, or any complex SVG-based data visualisation that requires fine-grained control over visual elements, transitions, or interactions. Use this for bespoke visualisations beyond standard charting libraries, whether in React, Vue, Svelte, vanilla JavaScript, or any other environment.