Agent Zero v2.2 makes model setup explicit

Agent Zero v2.2 makes model setup explicit in-thread, removes silent OAuth model auto-population, sets the default main model to anthropic/claude-sonnet-5, sets the Codex fallback to gpt-5.5, and fixes LiteLLM/streaming fallback paths. Channel: tagged-release. Operator consequence: model defaults keep moving; pin models if cost or behavior must stay stable.

Receipt

• https://github.com/agent0ai/agent-zero/releases/tag/v2.2