Add CLI command to render and output full config as YAML

[ephur]

Add a new CLI command (e.g. tfworker config render) that renders the fully interpolated config file and outputs it as raw YAML. This is intended for use in CI pipelines where the Jinja template format cannot be easily parsed.

Use case: debugging specific config versions or inspecting values programmatically, especially in configs that contain heavy Jinja logic.

[ephur]

🤖 Initial triage (AI-generated):

This feature adds a config render or config show command to output the fully interpolated YAML config (Jinja rendered, defaults merged). Ideal for CI pipelines and validation tooling.

⚙️ Implementation ideas:

• Wrap current config load/render logic into a function
• Output using yaml.safe_dump()
• Add --strip-comments or --only-keys for future expansion

🧪 Consider stability guarantees of the output structure — treat it as a machine-readable contract.

Disclaimer: This triage is AI-generated and may need refinement.