DECLARATIVE-YAML-03: Bound and shape strings with min/max, pattern, format

What it demonstrates

Adding numeric bounds, a regex pattern, and a named string format to a typed field.

Builds on: DECLARATIVE-YAML-02: Constrain with enum and const

How it’s done

The declarative YAML artifact, verbatim — no code required.

frontmatter:
  fields:
    id:       { type: string, pattern: '^D-\d{4}$' }
    title:    { type: string, min: 1, max: 80 }
    created:  { type: string, format: date }
    contact:  { type: string, format: email }
    weight:   { type: number, int: true, min: 0, max: 5 }

Surfaces exercised

• schema.ts typed(): .min/.max
• .regex(pattern)
• STRING_FORMATS (date/email -> z.iso.date()/z.email())
• int -> z.int()