Insight for: mcp codex连不上的情况

This issue exposes critical interoperability and compatibility failures within ARIS's multi-LLM agent framework. Users are encountering 400 errors due to unsupported model configurations (e.g., `gpt-5.4-xhigh`, `gpt-4o` with Codex via a ChatGPT account). The system's fallback mechanism is failing, leading to an inability to determine which model is ultimately used. This directly undermines ARIS's core value proposition of "cross-model review loops" and "no lock-in," as model flexibility is compromised by integration complexities. Such errors create significant operational friction and erode trust in the platform's ability to reliably leverage diverse LLM agents.