Implement CLI and runner script in codex-agent-runner repository

[blackboxprogramming]

Description

The codex-agent-runner repository currently lacks any executable code; its README indicates the project will run AI agent modules but no entry point exists. To make this repository usable, we need to provide a command-line interface and runner script.

Proposed work

• Create a runner directory or src/ with a Python module main.py or cli.py that imports the codex agent (from lucidia or other module) and runs tasks based on user input.
• Use argparse to parse command-line options such as specifying an input file, selecting an agent type (e.g., ChatGPTAgent, ContradictionAgent), and controlling recursion depth.
• Add a requirements.txt or setup.py listing dependencies (e.g., click or argparse).
• Provide a README update explaining how to install dependencies and run the CLI with sample commands.
• Add basic tests verifying that the CLI prints help and runs tasks (using pytest or unittest with subprocess).

Acceptance criteria

• Running python -m codex-agent-runner.cli --help prints usage information.
• The CLI can accept at least one input option and run a simple agent function.
• The repository contains cli.py/main.py, a requirements file, and an updated README describing usage.