{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://target-revenue.example/schemas/extension_contract.schema.json",
  "title": "Monetization Extension Contract",
  "description": "Stage 0 schema per specs/TechnicalSpecificationDocument.md §3.3. Structural conformance only — the semantic rule that allocation.rule may not redefine core terms is enforced in code (src/target_revenue/validation.py), not expressible in JSON Schema alone.",
  "type": "object",
  "required": [
    "id",
    "version",
    "value",
    "pricing",
    "allocation",
    "recognition",
    "reversal",
    "evidence",
    "status"
  ],
  "additionalProperties": false,
  "properties": {
    "id": {
      "type": "string",
      "pattern": "^trsl:extension:[a-zA-Z0-9._-]+$"
    },
    "version": {
      "type": "string",
      "pattern": "^[0-9]+(\\.[0-9]+)*$"
    },
    "value": {
      "type": "object",
      "required": ["description"],
      "additionalProperties": false,
      "properties": {
        "description": { "type": "string", "minLength": 1 }
      }
    },
    "pricing": {
      "type": "object",
      "required": ["method"],
      "additionalProperties": false,
      "properties": {
        "method": { "type": "string", "minLength": 1 }
      }
    },
    "allocation": {
      "type": "object",
      "required": ["rule"],
      "additionalProperties": false,
      "properties": {
        "rule": { "type": "string", "minLength": 1 },
        "default_rate": {
          "type": "number",
          "minimum": 0,
          "maximum": 1,
          "description": "Default development_allocation fraction, per canonical profile defaults (working default Q11)."
        }
      }
    },
    "recognition": {
      "type": "object",
      "required": ["event"],
      "additionalProperties": false,
      "properties": {
        "event": {
          "type": "string",
          "enum": ["order", "invoice", "payment-settled", "delivery"],
          "description": "Working default Q10: payment-settled only for Stage 0 fold inputs."
        }
      }
    },
    "reversal": {
      "type": "object",
      "required": ["rule"],
      "additionalProperties": false,
      "properties": {
        "rule": { "type": "string", "minLength": 1 }
      }
    },
    "evidence": {
      "type": "object",
      "required": ["requirement"],
      "additionalProperties": false,
      "properties": {
        "requirement": { "type": "string", "minLength": 1 }
      }
    },
    "status": {
      "type": "string",
      "enum": ["registered", "canonical", "deprecated"],
      "description": "Assigned by Trust Service / maintainer review, not the extension author. canonical promotion is a documented human action (SCOPE §4)."
    }
  }
}