Normalize oversized tool call IDs for OpenAI-compatible gateways

### What do you want to change? Normalize oversized foreign tool-call IDs for all OpenAI-compatible Chat Completions providers. ### Why? Custom gateways such as LiteLLM may forward history from other providers/models to OpenAI Responses, which rejects call_id values over 64 characters ### How? (optional) Preserve short IDs; hash and bound long IDs; consistently remap matching tool results.