{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "stock-analysis/schemas/sub-industry-deepdive.json",
  "title": "SubIndustryDeepDive",
  "description": "Return from sector-screener deep-dive mode (Stage 3). Porter's Five Forces, TAM, company universe for one sub-industry.",
  "type": "object",
  "required": ["code", "thesis", "companies"],
  "properties": {
    "code": { "type": "string", "description": "GICS Level 4 code." },
    "thesis": { "type": "string", "description": "Investment thesis for this sub-industry." },
    "porter_summary": { "type": "string", "description": "Porter's Five Forces one-line summary." },
    "companies": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["ticker"],
        "properties": {
          "ticker": { "type": "string" },
          "name": { "type": "string" },
          "market_cap_usd": { "type": "number" },
          "current_price": { "type": "number" }
        }
      }
    }
  }
}