[Bug]: 通过-m参数传递自定义providor 在tui已经启动后 starting server耗时较久

[GoldTest]

Product or interface

CLI - interactive TUI

Version

0.5.1

Platform

Windows

OS version and architecture

win 11，x64

Issue area

Agent stuck / slow / repeated loop

Desktop log upload ID (optional)

No response

Steps to reproduce

xterm环境下通过 mcode -m 自定义模型，在tui启动后 有2-3秒无法对话 提示starting server，start完后可以正常对话

Expected and actual behavior

starting server过程不应该耗时如此之久

Redacted error summary

Screenshots

No response

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