chore: add AGENTS.md for opencode agents

# Agents

This role installs prerequisites for Zabbix software (Zabbix repository and dependencies).

## Role Analysis

- **Type**: Prerequisite role (for Zabbix components)

- **OS Support**: Debian 12, Debian 13, SLES 15, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS

- **Deployment Method**: Direct (package repository setup)

- **Scope**: Zabbix repository configuration

## Tasks

1. **prerequisites** - Configures Zabbix APT repository

## Testing

```bash

ansible-lint

molecule test

```