claude-craftkit

Architecture audit and analysis specialist for Modular Monoliths. **ALWAYS use when reviewing codebase architecture, evaluating bounded contexts, assessing shared kernel size, detecting "Core Obesity Syndrome", or comparing implementation against ADR-0001 and anti-patterns guide.** Use proactively when user asks about context isolation, cross-context coupling, or shared kernel growth. Examples - "audit contexts structure", "check shared kernel size", "find cross-context imports", "detect base classes", "review bounded context isolation", "check for Core Obesity".

Backend engineering with Modular Monolith, bounded contexts, and Hono. **ALWAYS use when implementing ANY backend code within contexts, Hono APIs, HTTP routes, or service layer logic.** Use proactively for context isolation, minimal shared kernel, and API design. Examples - "create API in context", "implement repository", "add use case", "context structure", "Hono route", "API endpoint", "context communication", "DI container".

Clean Architecture principles for Modular Monolith with bounded contexts and minimal shared kernel. **ALWAYS use when working on backend code, ESPECIALLY when creating files, deciding file locations, or organizing contexts (auth, tax, bi, production).** Use proactively to ensure context isolation and prevent "Core Obesity Syndrome". Examples - "create entity", "add repository", "where should this file go", "modular monolith", "bounded context", "shared kernel", "context isolation", "file location", "layer organization".

Expert in code design standards including SOLID principles, Clean Code patterns (KISS, YAGNI, DRY, TDA), and pragmatic software design. **ALWAYS use when designing ANY classes/modules, implementing features, fixing bugs, refactoring code, or writing functions.** Use proactively to ensure proper design, separation of concerns, simplicity, and maintainability. Examples - "create class", "design module", "implement feature", "refactor code", "fix bug", "is this too complex", "apply SOLID", "keep it simple", "avoid over-engineering".

Error handling patterns including exceptions, Result pattern, validation strategies, retry logic, and circuit breakers. **ALWAYS use when implementing error handling in backend code, APIs, use cases, or validation logic.** Use proactively for robust error handling, recovery mechanisms, and failure scenarios. Examples - "handle errors", "Result pattern", "throw exception", "validate input", "error recovery", "retry logic", "circuit breaker", "exception hierarchy".

Expert frontend engineering with simplified pragmatic architecture, React 19, TanStack ecosystem, and Zustand state management. **ALWAYS use when implementing ANY frontend features.** Use when setting up project structure, creating pages and state management, designing gateway injection patterns, setting up HTTP communication and routing, organizing feature modules, or optimizing performance. **ALWAYS use when implementing Gateway Pattern (Interface + HTTP + Fake), Context API injection, Zustand stores, TanStack Router, or feature-based architecture.**

Expert in naming conventions for files, directories, classes, functions, and variables. **ALWAYS use when creating ANY files, folders, classes, functions, or variables, OR when renaming any code elements.** Use proactively to ensure consistent, readable naming across the codebase. Examples - "create new component", "create file", "create folder", "name this function", "rename function", "rename file", "rename class", "refactor variable names", "review naming conventions".

Development workflow and quality gates for the Bun + TypeScript stack. **ALWAYS use before commits** to ensure quality gates are met. Also use when starting development or when user asks about workflow process. Examples - "before commit", "quality gates", "workflow checklist", "bun commands", "pre-commit checks".

TypeScript type safety including type guards and advanced type system features. **ALWAYS use when writing ANY TypeScript code (frontend AND backend)** to ensure strict type safety, avoid `any` types, and leverage the type system. Examples - "create function", "implement class", "define interface", "type guard", "discriminated union", "type narrowing", "conditional types", "handle unknown types".

Expert in barrel file generation and import organization. Use when user creates index.ts/tsx files, needs clean import paths, wants to organize exports, or mentions barrel files. Examples - "create barrel files", "generate index exports", "organize imports", "I created a new index.ts", "clean up barrel files", "update barrel exports".

Expert in code quality, formatting, linting, and quality gates workflow. Use when user needs to setup quality tools, fix linting errors, configure Biome/Prettier, setup pre-commit hooks, or run quality checks. Examples - "setup code quality", "fix lint errors", "configure Biome", "setup Husky", "run quality checks", "format code", "type check errors".

Expert testing and quality engineer for Vitest (running on Bun). Use when user needs test creation, test strategy, code quality setup, E2E testing, or debugging test failures. Examples - "write tests for this function", "create E2E tests with Playwright", "help me test this API route", "setup testing infrastructure", "why is this test failing?", "improve code quality with Biome".

Automatically analyzes code changes and creates git commits with conventional commit messages when the user indicates they want to save/commit their work. Use when user mentions committing, saving work, or wants changes recorded in git history. Examples - "commit these changes", "save this work", "I'm done with this feature, let's commit", "create a commit for the auth updates".

Automatically creates comprehensive pull requests to the dev branch when user indicates their feature/fix is complete and ready for review. Use when user mentions creating PR, submitting for review, or indicates work is done. Examples - "create a PR", "ready for review", "open a pull request", "submit this to dev", "all tests passing, let's get this reviewed".

Expert in Gesttione Design System with deep knowledge of brand colors, metric tokens, typography, and component patterns. **ALWAYS use for Gesttione projects when applying brand colors, creating metric visualizations, or building dashboard components.** Use when user needs Gesttione-specific styling, metric visualizations, dashboard components, or brand-compliant UI. Examples - "create revenue metric card", "use Gesttione brand colors", "design dashboard with metrics", "apply brand identity", "create metric visualization".

Expert UI/UX designer for React applications with shadcn/ui and Tailwind CSS. **ALWAYS use when creating UI components, implementing responsive layouts, or designing interfaces.** Use when user needs component creation, design implementation, responsive layouts, accessibility improvements, dark mode support, or design system architecture. Examples - "create a custom card component", "build a responsive navigation", "setup shadcn/ui button", "implement dark mode", "make this accessible", "design a form layout".

Expert database schema designer and Drizzle ORM specialist. Use when user needs database design, schema creation, migrations, query optimization, or Postgres-specific features. Examples - "design a database schema for users", "create a Drizzle table for products", "help with database relationships", "optimize this query", "add indexes to improve performance", "design database for multi-tenant app".

Pull Request review manager for CodeRabbit AI. **ALWAYS use when user needs to work with PR reviews, fix CodeRabbit issues, or check review status.** Downloads, organizes, and helps resolve review comments systematically. Examples - "download PR reviews", "fix CodeRabbit issues for PR 123", "check review status", "organize review comments by severity".