0.153.4

Added

• Added generated v2 models for paginated thread metadata, async user-input questions, function-call output items, rate-limit metadata, and misalignment error details. #24

Changed

• Synced the vendored upstream checkout to rust-v0.153.4 (3d2ee51ca2d5db578f328aa75e20aa22c0197c9a) and refreshed generated-model coverage and upstream provenance. #24