Fix/variant generator fidelity

[Ne0nd0g]

Summary

Fixes several variant-generator fidelity issues that could leave generated labs referencing stock GOAD assets, retain original identity names, or omit required empty directories.

Generated variants now handle CamelCase name components, rename identity-based files consistently with their contents, use and rewrite variant-specific inventory templates, and preserve .gitkeep placeholders when copying the lab tree.

Type of change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would change existing behavior)
• New lab, lab variant, or extension
• New / updated provider support
• Refactor / internal cleanup (no functional change)
• Documentation
• CI / build / release tooling
• Dependency update

Area

• CLI (cli/)
• Ansible collection (ansible/)
• Terraform / Terragrunt (infra/, modules/)
• Packer / Warpgate (packer/, warpgate-templates/)
• Lab definitions (ad/)
• Extensions (extensions/)
• Variant generator / tools (tools/)
• Documentation (docs/, README.md, etc.)
• CI workflows (.github/)

Related issues

N/A

How was this tested?

• Added table-driven Go tests covering name-component replacement at:

  • CamelCase boundaries, such as StarkWallpaper
  • normal word and punctuation boundaries
  • the end of a string
  • multiple occurrences in the same string

• Added negative cases confirming that partial identifiers such as Starkey, Stark1, Stark_svc, and aStark are not changed.

• Verified that generated variant inventories are sourced from the variant tree and that their domain_name values point to the generated variant.

• Verified that identity-based filenames are transformed using the same mappings as their contents.

• Verified that .gitkeep files are retained so required empty directories remain present in generated variants.

• Provider(s) tested:

• Lab(s) tested:

• Operator OS: Linux

Screenshots / logs (optional)

N/A

Checklist

• I have read CONTRIBUTING.md.
• My changes follow the existing code style of the area I touched.
• I have added or updated tests where it makes sense (Go tests under cli/, Ansible syntax checks, etc.).
• I have updated documentation (README, docs/, role README, command help text) where relevant.
• I have checked that I am not committing real secrets, personal credentials, or internal hostnames. (Intentional lab credentials inside ad/, ansible/, and extensions/ are expected and fine.)
• If this PR changes user-facing CLI behavior, I have updated the relevant --help text and any docs that reference it.
• If this PR introduces a breaking change, I have called it out in the Summary above.