edge-case-coverage

Identify and document boundary conditions, corner cases, error scenarios, and validation requirements that implementations must handle. Use when the user asks to find edge cases, identify corner cases, specify validation rules, enumerate error scenarios, harden a function against bad inputs, or think through what can go wrong at the boundaries of a system. NOT for writing the actual tests (use testing-framework or test-driven-development). NOT for structured risk registers around project-level risks (use risk-management). NOT for security vulnerability scanning (use code-review).

适合你，如果需要在实现前穷举所有可能的异常输入和边界情况。