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Create and manage database migrations with reversible changes, proper naming conventions, and zero-downtime deployment considerations. Use this skill when creating new database migrations, modifying schema changes, adding or removing tables/columns, creating indexes, or managing data migrations. When working on files in migrations/, db/migrate/, alembic/, or prisma/migrations/ directories. When writing up/down migration methods, planning schema changes for production deployments, or reviewing migration files for safety and rollback capability.

Maintain multilingual README versions (English primary, Chinese translation).LOAD THIS SKILL WHEN: User says "翻譯", "translate", "i18n", "多語言", "中英文" | README.md changes | need bilingual docs.CAPABILITIES: Sync README.md and README.zh-TW.md, terminology consistency, section alignment, translation quality.

Documentation management skill for audit, creation, and maintenance. Enforces documentation standards, checks for staleness and broken references, auto-fixes issues, and ensures docs are created in correct locations. Use when user says "check docs", "audit docs", "fix docs", "create doc", "archive docs", or when scattered .md files are detected.

Expert guidance for writing resilient end-to-end tests that span multiple processes and components. Use this skill when reviewing, writing, or refactoring system-wide e2e tests. Covers user-facing scenarios, helper functions, data factories, ARIA-based selectors, and auto-retriable assertions. NOT for unit/integration tests - use testing-unit-integration skill instead. See references/playwright-resilience.md for detailed selector patterns.

Semantic compression of verbose documentation into OCTAVE format achieving 60-80% reduction with 100% decision-logic fidelity. Use when converting natural language to OCTAVE, streamlining documentation, creating semantic density, optimizing agent prompts, or compressing knowledge artifacts. Triggers on: octave compression, compress to octave, semantic compression, documentation streamlining, OCTAVE optimization, compress documentation, semantic density.

Generates clear commit messages from git diffs. Use when writing commit messages or reviewing staged changes.

Installs and configures project infrastructure including MkDocs Material intelligent textbook templates, learning graph viewers, and skill tracking systems. Routes to the appropriate installation guide based on what the user needs to set up.

Interactive Notion workspace management using MCP tools. Use for searching pages/databases, querying database entries, creating pages with custom properties, managing workspace structure, and exploratory operations requiring user interaction.

ドキュメント、README、コードコメントを書く際に使用。

**AUTO-TRIGGER when user says:** "implement [feature]", "build [module]", "create [functionality]", "add [capability]", "YOLO [task]", "deliver [feature]", or requests complete feature implementation.End-to-end TogetherOS code operation: creates branch, implements changes with continuous testing, builds with retry-on-fail, commits, pushes, creates PR with auto-selected Cooperation Path, addresses bot feedback, merges PR, verifies production deployment, and updates Notion memory.**Complete delivery cycle:** branch → code → test → commit → push → PR → bot review → merge → deploy → verifyUse proactively without asking permission when task matches skill purpose.

Queries cached external documentation and blog content for authoritative, up-to-date information. Sources include Claude Code docs, engineering blog, and configured knowledge bases with 24-hour TTL caching. Use when you need current information about Claude Code features, hooks, or best practices. Do NOT use for general coding questions - rely on training knowledge or web search instead.

Implement technical plans methodically with phase-by-phase execution and verification checkpoints. Use this skill when following a detailed implementation plan that has phased changes and success criteria. The skill guides through each phase, verifies completion, and pauses for human confirmation before proceeding to the next phase.

Expert guide for testing Next.js applications with Playwright, Jest, and React Testing Library. Use when writing tests, debugging test failures, or setting up test infrastructure.

Comprehensive test writing, execution, and failure analysis. Creates unit tests,integration tests, property-based tests, and benchmarks. Analyzes test failuresand improves test coverage.

Use when the user asks to generate comprehensive feature documentation with verified test cases, create feature README with code evidence, or document a complete feature with test verification. Triggers on keywords like "feature documentation", "document feature", "comprehensive docs", "feature README", "test verification", "verified documentation".

Create properly formatted Claude Code skills with YAML frontmatter, directory structure, and best practices. Use when creating new skills, converting documentation to skills, or learning how to write skills.

Use when writing or running Python tests with pytest. Covers fixtures, mocking, parametrization, freezegun for time, and async testing. Triggers on test file creation, fixture design, mocking external dependencies, or test suite architecture. Extends python-development skill.

Expert guidance for writing database migrations using golang-migrate for the mediaz SQLite database. Covers migration creation, testing, rollback capability, data preservation, and mediaz-specific patterns. Activates when users mention migrations, schema changes, database alterations, or golang-migrate.

Testing strategies and patterns (unit, integration, E2E, API tests). TRIGGERS: 'test', 'teste', 'testing', 'E2E', 'integration test', 'unit test', 'test failure'. Use when setting up tests, writing test cases, debugging test failures, implementing test patterns.

WHEN: Go API review with Gin/Echo/Fiber/Chi, router patterns, middleware, request handlingWHAT: Router organization + Middleware patterns + Request validation + Error responses + OpenAPIWHEN NOT: General Go → go-reviewer, Rust API → rust-api-reviewer