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Describe the enhancement you want to request

In gpt-5.3-codex, the thought block only contains a brief description and does not display detailed thinking information. Commentary text can be added before toolcall, but it requires enabling via system prompt and parsing the phase field in the returned information. Currently, opencode does not support this feature, which could make it easier for developers to understand the execution details of the current step performed by the LLM.

pelease support openai gpt-5.3-codex phase "commentary" | "final_answer" in message item
https://github.com/openai/codex/blob/bd3ce981900288af224a1164adae0e321b330582/codex-rs/protocol/src/items.rs#L58

need add system prompt to make phase "commentary" work https://github.com/openai/codex/blob/bd3ce981900288af224a1164adae0e321b330582/codex-rs/core/models.json#L47