{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "urn:com.nanliu.cuiji:dish:v1",
  "title": "Cuiji single dish ZIP manifest v1",
  "type": "object",
  "required": [
    "format",
    "version",
    "title"
  ],
  "properties": {
    "format": {
      "const": "com.nanliu.cuiji.dish"
    },
    "version": {
      "const": 1
    },
    "title": {
      "type": "string",
      "minLength": 1,
      "description": "Trimmed nonempty title; at most 200 Swift extended grapheme clusters."
    },
    "text": {
      "type": "string",
      "description": "Plain UTF-8, at most 100000 bytes; keep newlines.",
      "default": ""
    },
    "sourceURL": {
      "type": [
        "string",
        "null"
      ],
      "description": "HTTP/HTTPS URL with host, without credentials; max 4096 UTF-8 bytes."
    },
    "images": {
      "type": "array",
      "maxItems": 6,
      "uniqueItems": true,
      "items": {
        "type": "string",
        "pattern": "^images/(?!.*\\.\\.)[A-Za-z0-9_.-]+\\.([Jj][Pp][Gg]|[Jj][Pp][Ee][Gg]|[Pp][Nn][Gg]|[Hh][Ee][Ii][Cc]|[Hh][Ee][Ii][Ff]|[Ww][Ee][Bb][Pp]|[Gg][Ii][Ff]|[Tt][Ii][Ff]|[Tt][Ii][Ff][Ff]|[Bb][Mm][Pp])$",
        "description": "No '..'; max 160 UTF-8 bytes. Extensions are case insensitive.",
        "maxLength": 160
      },
      "default": []
    }
  },
  "description": "Requires text, image or source beyond title. Runtime enforces byte limits, safe paths, image decoding and exact ZIP entries. Additive fields retain their JSON structure and types. Missing text/images default to empty; established field names, types, hierarchy and version are fixed.",
  "additionalProperties": true
}