general-purpose subagent uses gpt-5.4-mini even when configured to inherit model

[andresdelfino]

Describe the bug

general-purpose subagent uses gpt-5.4-mini even when configured to inherit model from session.

Affected version

1.0.75

Steps to reproduce the behavior

1. Configure GPT-5.6 Sol as the session model.
2. Configure general-purpose subagent to inherit model.
3. Trigger a general-purpose subagent.
4. Subagent uses gpt-5.4-mini.

Expected behavior

Subagent follows configuration, inheriting session model.

Additional context

Operating system: Linux
CPU architecture: x86_64
Terminal emulator: Gnome Terminal
Shell: zsh