{
  "type": "object",
  "properties": {
    "fp_id": {"type": "string", "pattern": "^[a-z0-9][a-z0-9_]*$"},
    "t2i_prompt": {"type": "string", "minLength": 30},
    "key_elements": {"type": "array", "items": {"type": "string"}},
    "numbered_elements": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "number": {"type": "integer", "minimum": 1},
          "label": {"type": "string", "minLength": 2},
          "category": {"type": "string", "enum": ["furniture", "opening", "prop", "plot_device", "area"]},
          "position_hint": {"type": "string", "minLength": 5}
        },
        "required": ["number", "label", "category", "position_hint"],
        "additionalProperties": false
      }
    },
    "camera_recommendations": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "bg_id": {"type": "string", "pattern": "^[a-z0-9][a-z0-9_]*$"},
          "sub_location": {"type": "string", "pattern": "^[a-z0-9][a-z0-9_]*$"},
          "camera_position": {"type": "string", "minLength": 10},
          "camera_height": {"type": "string", "minLength": 5},
          "lens_hint": {"type": "string", "minLength": 3},
          "framing_notes": {"type": "string"}
        },
        "required": ["bg_id", "sub_location", "camera_position", "camera_height", "lens_hint", "framing_notes"],
        "additionalProperties": false
      }
    }
  },
  "required": ["fp_id", "t2i_prompt", "key_elements", "numbered_elements", "camera_recommendations"],
  "additionalProperties": false
}