feat(client): support PolyV2 CLOB order placement

[cesarenaldi]

Summary

Implements the CLOB phase of DEV-544, stacked on #280.

• accepts exactly one of tokenId or positionId when preparing, creating, or placing market and limit orders
• preserves that identity through market metadata, fee, order-book, balance, and allowance lookups
• keeps token-ID orders on the CTF Exchange V2/negative-risk routing path
• routes position-ID orders through exchangeV3, Exchange V3 typed-data signing, and positionManager sell approvals
• keeps the signed/wire order field named tokenId, containing either the requested token ID or position ID as required by the protocol
• retains the existing tokenId order input without deprecation or caller-supplied protocol flags
• keeps unrestricted 64-bit salt generation local to RFQ while ordinary CLOB orders retain their 53-bit-safe salt generator
• validates singular and batched CLOB order salts before JavaScript-number wire serialization

The broader CLOB market-data rename to assetId is intentionally deferred to the following phase.

Validation

• pnpm build
• pnpm lint
• pnpm typecheck
• pnpm test:client (39 files, 297 tests)
• generated declaration inspection