BuilderTradeResponse: builder field typed as Address but API returns UUID

[JohnGalt017]

Problem

BuilderTradeResponse.builder is typed as Address (20-byte Ethereum address), but the /builder/trades API returns a UUID string (builder API key ID).

Deserialization fails with:

invalid string length at line 1 column 199

Actual API response

{
  "builder": "019b618b-4a91-7dd9-a4c9-aadfbcbd5b95",
  "maker": "0x4Ede3a1320FFD8087C0302b360721696f0037865",
  ...
}

builder is a UUID, maker is an Ethereum address.

Verified

Reproduced locally by deserializing actual API JSON into BuilderTradeResponse — fails at column 199 which is exactly the builder field.

The TypeScript SDK (@polymarket/clob-client) correctly types this as string.

Affected code

src/clob/types/response.rs:657:

pub builder: Address,   // should be String or ApiKey (Uuid)

Suggested fix

pub builder: ApiKey,  // ApiKey = Uuid — matches `owner` field