⟐ Editor/2026-08-23Intermediate
A Triage Order for WebP and Opus Attachments That Never Reach the Agent
Hub 2.9.1 added WebP attachments on August 20, and CLI 1.1.17 fixed Ogg-family audio being rejected by the model on the same day. Here is why rejection happens on the sending side rather than in the file, with the MIME results I actually measured.