Description

I have created a opencode plugin to give the ai context about ddev and fix command execution: https://github.com/JUVOJustin/opencode-ddev-plugin

The plugin adds context that ddev is used by executing:

await client.session.prompt({
      path: { id: currentSessionId },
      body: {
        parts: [
          {
            type: 'text',
            text: `➡️  DDEV environment is used. Execute commands inside the DDEV container like this: \`ddev exec --dir="${containerWorkingDir}" bash -c <command>\``,
          },
        ],
        noReply: true,
      },
    });

This causes a user message to be written back in the context. After that message the session switches back to using the primary agents model instead of the one choosen manually using /models

Funnily enough, i noticed this during the recording of my screencast for my ddev plugin so it can be seen in action here: https://cap.so/s/xvrarkbtk9yw6qh

OpenCode version

1.0.120

Steps to reproduce

• Create session
• Switch model using /models
• Let the sdk write a message via a custom plugin
• See the session using the default model of the primary agent again

Screenshot and/or share link

https://opencode.ai/s/XAifDA71

Operating System

macOS 15.7.2

Terminal

macOS Terminal