fsharp-validation

Create validation logic for F# backends with error accumulation and async validation.Use when: "add validation", "validate X", "input validation", "complex validation","business rules", "check email", "required fields", "async validation","database uniqueness", "cross-field validation", "validation errors".Creates validators in src/Server/Validation.fs. Use for complex scenarios;basic validation patterns are in fsharp-backend skill.

// tip: Run this command in your terminal to install the skill