Add set no-cd and align path resolution

[hans-d]

Summary

Feature: Add module-local set no-cd to skip automatic cd before recipes/backticks; mutually exclusive with set working-directory; recipe attributes still override.

Opt-in behavior: Add set no-cd-strict so when no-cd is on, backticks/shell/path helpers resolve relative to the invocation directory instead of the module dir. Default remains the old behavior for compatibility.

• fixes [Feature Request] An option to disable change directory for all recipes in justfile #2291
• fixes Feature request: setting [no-cd] for entire submodule file #2754
• fixes The [no-cd] attribute doesn't respect the working-directory of dependents #2940 (partially?)
• fixes [no-cd] attribute ignored by the absolute_path/canonicalize functions #2822

[casey]

Thanks for the PR!

This mostly looks good, but I would remove set no-cd-strict from this PR and leave it for later, to make it simpler.

[elijahfhopp]

Would love to see this make it in. @hans-d I can offer a patch to resolve the changes Casey needs on this PR if you'd like.

To clarify about removing no-cd-strict, we want to have it on or off (while removing the setting)? Just trying to understand the desired behaviour.

Thanks, all!

[hans-d]

this update is bringing the pr up to match master, and to have all test run locally.

re the no-cd-strict, it's similar to the no-cd but applied more strictly for certain functions (see linked issues). Added as it's new/changed behaviour compared to the original of no-cd.

will spilt the no-cd-strict into a new pr.

[casey]

This seems mostly okay, but I'm not sure why ExecutionContext::working_directory is changing, see comment.

[casey]

I'm not sure I understand why this function is changing.

[hans-d]

Likely lingering from teh previous bigger change. Reverted it and spotted a few other things that needed tightening.