wb | enable deployment of local commits

[fmaste]

Description

Only for "cloud" (*-nomadcloud) profiles.

Allow the use of full Nix store paths instead of flake reference URLs when the commit is unavailable online. Client machines, nodes, and the explorer must be able to access the deployer as a Nix substituter.

This mode is triggered when no commit ID is found (commit "000000...") or when the specified commit doesn’t exist on GitHub. A warning message appears, followed by a prompt to press Enter to continue.

Checklist

• Commit sequence broadly makes sense and commits have useful messages
• New tests are added if needed and existing tests are updated. These may include:
  • golden tests
  • property tests
  • roundtrip tests
  • integration tests
    See Runnings tests for more details
• Any changes are noted in the CHANGELOG.md for affected package
• The version bounds in .cabal files are updated
• CI passes. See note on CI. The following CI checks are required:
  • Code is linted with hlint. See .github/workflows/check-hlint.yml to get the hlint version
  • Code is formatted with stylish-haskell. See .github/workflows/stylish-haskell.yml to get the stylish-haskell version
  • Code builds on Linux, MacOS and Windows for ghc-9.6 and ghc-9.12
• Self-reviewed the diff

Note on CI

If your PR is from a fork, the necessary CI jobs won't trigger automatically for security reasons.
You will need to get someone with write privileges. Please contact IOG node developers to do this
for you.

[mgmeier]

LGTM, thank you @fmaste !