7.12.0 (2026-09-08) Features api: add GPT Image 2.5 models and image options (#2705) (6500a16) Bug Fixes assistants: reject root IDs in run-step deltas (#2698) (63dfa4c) files: use a monotonic clock for processing timeout (#2657) (bb0f51b) preserve suppressed workload authorization (#2699) (57bbfd3)