Documentation

Extracts Mermaid diagrams from markdown files and generates high-quality PNG images using bundled scripts. Activates when working with Mermaid diagrams, converting diagrams to PNG, extracting diagrams from markdown, or processing markdown files with embedded Mermaid code.

Creates educational Teams channel posts for internal knowledge sharing about Claude Code features, tools, and best practices. Applies when writing posts, announcements, or documentation to teach colleagues effective Claude Code usage, announce new features, share productivity tips, or document lessons learned. Provides templates, writing guidelines, and structured approaches emphasizing concrete examples, underlying principles, and connections to best practices like context engineering. Activates for content involving Teams posts, channel announcements, feature documentation, or tip sharing.

Applies Vitest test design and quality standards. Provides coverage requirements and mock usage guides. Use when writing unit tests.

将草稿信息撰写为最终文章。

Defines environment variables, architecture design, and build/test commands. Use when configuring environment or designing architecture.

Defines frontend environment variables, component design, and data flow patterns. Use when configuring React environment.

Guides PRD, ADR, Design Doc, and Work Plan creation with templates and decision matrix.

Designs integration and E2E tests with mock boundaries and behavior verification rules. Use when writing E2E or integration tests.

環境変数、アーキテクチャ設計、ビルド・テストコマンドを定義。環境設定、アーキテクチャ設計時に使用。

フロントエンドの環境変数、コンポーネント設計、データフローを定義。React環境設定時に使用。

PRD、ADR、Design Doc、作業計画書の作成を支援。テンプレートと作成判定マトリクスを提供。

Use when writing ANY code with async, actors, threads, or seeing ANY concurrency error. Covers Swift 6 concurrency, @MainActor, Sendable, data races, async/await patterns, performance optimization.

Use when researching Apple frameworks, APIs, or WWDC sessions - provides techniques for retrieving full transcripts, code samples, and documentation using Chrome browser and sosumi.ai

TextKit 2 complete reference (architecture, migration, Writing Tools, SwiftUI TextEditor) through iOS 26

Use when writing raw SQL queries with GRDB, complex joins, ValueObservation for reactive queries, DatabaseMigrator patterns, query profiling under performance pressure, or dropping down from SQLiteData for performance - direct SQLite access for iOS/macOS

Use when writing unit tests, adopting Swift Testing framework, making tests run faster without simulator, architecting code for testability, testing async code reliably, or migrating from XCTest - covers @Test/@Suite macros,

Use when writing UI tests, recording interactions, tests have race conditions, timing dependencies, inconsistent pass/fail behavior, or XCTest UI tests are flaky - covers Recording UI Automation (WWDC 2025), condition-based waiting, network conditioning, multi-factor testing, crash debugging, and accessibility-first testing patterns

Use when writing ANY test, debugging flaky tests, making tests faster, or asking about Swift Testing vs XCTest. Covers unit tests, UI tests, fast tests without simulator, async testing, test architecture.

Use the public toolbox scripts published from docs/tools via tool-runner.js. Covers listing tools, executing them safely with droid exec context, and required environment variables.

Systematic code review patterns, quality dimensions, anti-pattern detection, and constructive feedback techniques. Use when reviewing code changes, assessing codebase quality, identifying technical debt, or mentoring through reviews. Covers correctness, design, security, performance, and maintainability.