Use when planning trips, creating travel itineraries, managing travel budgets, or seeking destination advice. Covers single-city vacations, multi-city road trips, and open-jaw flight routing. Handles family travel, solo trips, and group planning.
Domain type design and architectural planning for Go code. Use when planning new features, designing self-validating types, preventing primitive obsession, or when refactoring reveals need for new types. Focuses on vertical slice architecture and type safety.
Creates concise, behavior-focused documentation for humans and AI. Use after feature implementation OR bug fixes to document HOW THE PRODUCT BEHAVES. NOT a changelog - documents current behavior, not change history.
WHEN: User requests Go code work (implement, fix, add, refactor) or mentions @ldd in a Go project. Orchestrates complete workflow (Phases 1-5): design → test → implement → lint → fix → documentation. Auto-triggers parallel quality analysis and iterative fix loop until code is commit-ready.
ADVISORY validation of code against design principles that linters cannot enforce. Loaded by go-code-reviewer agent for design analysis guidance. Also invoked by @refactoring (after pattern application). Can be manually invoked for standalone code review. Categorizes findings as Design Debt, Readability Debt, or Polish Opportunities. Does NOT block commits.
Linter-driven refactoring patterns to reduce complexity and improve code quality. Use when linter fails with complexity issues (cyclomatic, cognitive, maintainability) or when code feels hard to read/maintain. Applies storifying, type extraction, and function extraction patterns.
Use when creating leaf types, after refactoring, during implementation, or when testing advice is needed. Automatically invoked to write tests for new types, or use as testing expert advisor. Covers unit, integration, and system tests with emphasis on in-memory dependencies. Ensures 100% coverage on leaf types with public API testing.
Component and type design for TypeScript + React code. Use when planning new features, designing components and custom hooks, preventing primitive obsession, or when refactoring reveals need for new abstractions. Supports layer-based and hybrid architecture patterns with type safety.