chore: add AGENTS.md for opencode agents

# Agents

This role configures [Pangolin](https://digpangolin.com/) - a Docker management UI for homelabs.

## Role Analysis

- **Type**: Application server role (Docker management UI)

- **OS Support**: Debian 12

- **Deployment Method**: Docker

- **Dependencies**: Docker must be installed

## Tasks

1. **create network** - Creates Docker network

2. **install pangolin** - Deploys Pangolin via Docker

3. **cleanup docker** - Cleans up Docker resources

## Testing

```bash

ansible-lint

molecule test

```