#SDK updates

openai-python 3.9/3.10 and openai-node 7.11/7.12: Prompt Cache Diagnostics, API Key Expiry, GPT Image 2.5

Four SDK releases in two days, two more for key governance, and two pairs on 09-10: prompt cache diagnostics, key expiry plus org policy, GPT Image 2.5 — and two brand-new API surfaces (Live, Agents). Itemized, with code.