Git 與版本控制

Generate descriptive commit messages for jujutsu repositories. Use when creating commits, describing changes, or when the user asks for commit message help. Follows conventional commit format and project conventions.

Understand and work with Jujutsu (jj) version control system. Use when the user mentions commits, changes, version control, or working with jj repositories. Helps with stack-based commit workflows, change curation, and jj best practices.

AWS Cloud Development Kit (CDK) expert for building cloud infrastructure with TypeScript/Python. Use when creating CDK stacks, defining CDK constructs, implementing infrastructure as code, or when the user mentions CDK, CloudFormation, IaC, cdk synth, cdk deploy, or wants to define AWS infrastructure programmatically. Covers CDK app structure, construct patterns, stack composition, and deployment workflows.

Understand what commits are visible in jj log, elided revisions, and how to display different views. Use when commits seem missing, understanding log output, comparing jj log to git log, or seeing "elided" in log output.

Performs git operations and interacts with GitHub. Used when git-related operations are needed, including: git commands (commit, push, pull, branch, merge, etc.), GitHub API interactions, gh CLI operations, pull request operations, issue analysis and operations.

Write, configure, and run unit + integration tests using project-independent best practices; detect tooling; triage failures/flakes; keep a compact Testing State Capsule.

Comprehensive React 19 patterns expert covering Server Components, Actions, use() hook, useOptimistic, useFormStatus, useFormState, React Compiler, concurrent features, Suspense, and modern TypeScript development. Proactively use for any React development, component architecture, state management, performance optimization, or when implementing React 19's latest features.

AWS Key Management Service (KMS) patterns using AWS SDK for Java 2.x. Use when creating/managing encryption keys, encrypting/decrypting data, generating data keys, digital signing, key rotation, or integrating encryption into Spring Boot applications.

Dependency injection workflow for Spring Boot projects covering constructor-first patterns, optional collaborator handling, bean selection, and validation practices.

Testing Spring application events (ApplicationEvent) with @EventListener and ApplicationEventPublisher. Test event publishing, listening, and async event handling in Spring Boot applications. Use when validating event-driven workflows in your Spring Boot services.

Model Context Protocol (MCP) server implementation patterns with Spring AI. Use when building MCP servers to extend AI capabilities with custom tools, resources, and prompt templates using Spring's official AI framework.

Comprehensive Tailwind CSS utility-first styling patterns including responsive design, layout utilities, flexbox, grid, spacing, typography, colors, and modern CSS best practices. Use when styling React/Vue/Svelte components, building responsive layouts, implementing design systems, or optimizing CSS workflow.

Create comprehensive TypeScript documentation using JSDoc, TypeDoc, and multi-layered documentation patterns for different audiences. Includes API documentation, architectural decision records (ADRs), code examples, and framework-specific patterns for NestJS, Express, React, Angular, and Vue.

Core Node.js backend patterns for TypeScript applications including async/await error handling, middleware concepts, configuration management, testing strategies, and layered architecture principles. Use when building Node.js backend services, APIs, or microservices.

Core React 19 patterns including hooks, Suspense, lazy loading, component structure, TypeScript best practices, and performance optimization. Use when working with React components, hooks, lazy loading, Suspense boundaries, or React-specific TypeScript patterns.

Model Context Protocol (MCP) server implementation patterns with LangChain4j. Use when building MCP servers to extend AI capabilities with custom tools, resources, and prompt templates.

Manages schema lifecycle including scaffolding, safe field deprecation, and data migrations. Use when modifying existing schemas.

MANDATORY when given ANY task - provides comprehensive planning workflows including requirement analysis, backend-first ordering, atomic workflow patterns, and task breakdown frameworks. A task is any ad-hoc request, JIRA ticket, GitHub issue, refactoring request, etc.

MANDATORY for creating branches, commits, or pull requests - defines commit message formats, branching conventions, and PR best practices. ALWAYS consult this skill before ANY mutating git operation.

Branch protection and PR creation workflow