chore(main): release 1.16.0

[dylanneve1]

🤖 I have created a release beep boop

1.16.0 (2026-06-11)

Features

• agent-runtime: finish architecture unification plan (Phases 3-7) (#258) (d30d596)
• pipe codex api call metrics (#283) (31084c5)

Bug Fixes

• claude-sdk: detect Fable and show both 1M/non-1M variants (#290) (bc8ae9e)
• let Codex retry oversized text-block delivery (#285) (eb95900)
• recover from codex text-block delivery failures (#284) (ee3b95c)

Performance Improvements

• prompt-cache-friendly system prompt (boundary split + per-session freeze) (#292) (60b8bc7)
• stop statting every workspace file to render the prompt listing (#293) (829ce5f)

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[dylanneve1]

🤖 Created releases:

• v1.16.0

🌻