{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://bpa.local/schemas/risk-signal/v1",
  "title": "BPA Risk Signal v1",
  "type": "object",
  "additionalProperties": false,
  "required": ["code", "category", "severity", "source", "detected_at"],
  "properties": {
    "code": {
      "enum": [
        "CAPTCHA_REQUIRED",
        "RATE_LIMITED",
        "RISK_CONTROL",
        "SESSION_EXPIRED",
        "AUTH_REQUIRED",
        "PAGE_CONTEXT_CHANGED"
      ]
    },
    "category": {
      "enum": ["challenge", "throttle", "session", "page_context"]
    },
    "severity": { "enum": ["warning", "blocking"] },
    "source": { "enum": ["page", "adapter", "bridge"] },
    "detected_at": { "type": "string", "format": "date-time" },
    "retry_after_ms": {
      "type": "integer",
      "minimum": 0,
      "maximum": 3600000
    },
    "detail": { "type": "string", "maxLength": 1000 }
  }
}