Agent Observer 0.5.0a18 — Codex-only observation

Codex-only Agent Observer collector and read client. Claude native collection, SDK/history, service memo, hints and notification intake/rendering are retired; native Claude workflows remain external. API 2, snapshot/watch 4 and Service 2 are unchanged. Optional fleet reading uses Mesh SDK 1 with the Observer-owned Agent profile.

Exact accepted artifact: source fa3cd58e30d4175eeeb328081b013aea40b1625f; wheel SHA-256 06544d27ae62f590ee8e1b56f93d32026dffc2d0b13ac3c2c4df3b1e2dedba1e. These are the already accepted bytes, not a rebuild of later operator/documentation commits.

Collector and a18/Mesh a11 read artifacts are independently selected on Snap and Starship. The bridge and writer retain separate historical selections. See the operational cleanup report and API 2 client handoff in main for current native, resource and CI receipts and known creation-clock/older-history limits. This prerelease does not migrate downstream clients or select new provider policy, attachments, actions or bridges.