Portal token

POST {API_BASE_URL}/agent/cwallet/platform/portal/tokens
Authorization: Bearer {PLATFORM_CLIENT_TOKEN}
Content-Type: application/json

{
  "email": "user@example.com"
}

{
  "email": "user@example.com",
  "external_user_id": "platform-user-123",
  "redirect_uri": "https://agent.example.com/oauth/clink/callback",
  "state": "{RANDOM_STATE}",
  "code_challenge": "{S256_CODE_CHALLENGE}",
  "code_challenge_method": "S256"
}

{
  "code": 200,
  "msg": "Success",
  "data": {
    "status": "authorized",
    "customer_id": "ccus_...",
    "token_type": "Bearer",
    "access_token": "<Portal 用户 token>",
    "expires_in": 3600,
    "scope": "portal:read"
  }
}

Authorization: Bearer {PORTAL_TOKEN}

{
  "code": 200,
  "msg": "Success",
  "data": {
    "status": "authorization_required",
    "customer_id": "ccus_...",
    "authorization_url": "https://api.clinkbill.com/agent/cwallet/oauth/authorize?..."
  }
}