[Bug] Preferred model not being set in gemini-cli adapter

[Shahid-Musabbar]

Description

Preferred model inspite of being mentioned in the settings does not ensure it is set. The gemini-cli is still in "Auto" mode for the models.

Environment

• OS: Windows 11
• Node.js version: v24.19.0
• opengap version: 0.5.0
• Adapter : gemini-cli

Steps to Reproduce

1. Clone the repo and do a npm link for dev mode / Install via the "npm install -g @open-gitagent/opengap" command from the command prompt terminal
2. Create an agent using the "opengap init" command and edit the config as expected.
3. Run via the gemini-cli adapter by using the 'opengap run -a gemini -d .' from inside the project folder in the command prompt.

Expected Behavior

The gemini-cli is supposed to start with the agent with the preferred model as the default llm.

Actual Behavior

It starts with gemini-cli's Auto model router as the default model router ignoring the preferred model set in the agent.yaml file.

Agent Configuration

spec_version: "0.1.0"
name: hotel-helpdesk-agent
version: 0.1.0
description: A helpful hotel helpdesk agent that assists guests with inquiries, reservations, and general information about the hotel.
author: "Shahid"
license: MIT
model:
  preferred: gemini-3.7-flash
  constraints:
    temperature: 0.3
    max_tokens: 4096
skills: []
tools: []
runtime:
  max_turns: 30
  timeout: 120
tags: []

Additional Context

The preferred model is not being set properly in the gemini.ts file.