[BUG] /model cannot change reasoning effort when selecting a MiMo model from Recent

[ly0715-edit]

Description

Bug Description

When using MiMo Code with the official Xiaomi Token Plan login, the /model selector does not allow changing reasoning effort after a MiMo model has been selected once and moved into Recent.

Environment

• OS: Windows 11
• MiMo Code version: 0.1.1
• Authentication: official Xiaomi Token Plan login
• Model: mimo-v2.5-pro

Reproduction Steps

1. Start MiMo Code.
2. Run /model.
3. The model selector shows groups such as Recent, MiMo, and free MiMo models.
4. Select mimo-v2.5-pro from the MiMo group for the first time.
5. MiMo Code shows the reasoning effort selector, for example low / medium / high.
6. Select medium.
7. Run /model again.
8. mimo-v2.5-pro no longer appears in the original MiMo group and only appears under Recent.
9. Select mimo-v2.5-pro from Recent.

Actual Behavior

When selecting mimo-v2.5-pro from Recent, MiMo Code directly selects the model and does not show the reasoning effort selector again.

As a result, the model remains locked to the reasoning effort selected the first time, for example medium, and there is no UI path to switch it to high or low.

Expected Behavior

One of the following should happen:

1. Selecting a reasoning-capable MiMo model from Recent should still show the reasoning effort selector.
2. Or the model should remain available in the original MiMo group so the user can reselect it and change reasoning effort.
3. Or MiMo Code should provide another clear command/config path to change the reasoning effort for the current model.

Additional Notes

This appears to be a UI/state management issue in the /model selector.

A local workaround was attempted by modifying persisted variant values from medium to high, and the change appeared to take effect after restarting MiMo Code. This suggests that the selected reasoning effort is persisted, but the /model UI does not expose a way to update it once the model is only available from Recent.

There is a related open item about reasoning effort handling:

• fix: allow custom providers to switch reasoning effort for proxied models #148

However, this report is specifically about the Recent model selection path not showing the reasoning effort selector.

Plugins

None. No third-party plugins required to reproduce this issue.

OpenCode version

MiMo Code 0.1.1

Steps to reproduce

1. Start MiMo Code on Windows 11.
2. Log in using the official Xiaomi Token Plan account.
3. Run /model.
4. In the model selector, open the MiMo group.
5. Select mimo-v2.5-pro for the first time.
6. Choose a reasoning effort, for example medium.
7. Run /model again.
8. Observe that mimo-v2.5-pro no longer appears in the original MiMo group and only appears under Recent.
9. Select mimo-v2.5-pro from Recent.

Actual result:
MiMo Code directly selects the model and does not show the reasoning effort selector again. The model remains locked to the previously selected effort, for example medium.

Expected result:
Selecting a reasoning-capable model from Recent should still allow changing reasoning effort, or the model should remain available in the MiMo group so the user can select another effort.

Screenshot and/or share link

Operating System

Windows 11, PowerShell

Terminal

Windows Terminal with Windows PowerShell