fix: correct common.mk help target listing

[gcomneno]

Fix common.mk help output by preserving target names when parsing Makefile entries.

Fixes #941.

[asanvaq]

Hi! This PR also contains changes from #1103 and #1106. As the purpose of this PR is to fix common.mk help output, could you please update it so it only addresses this?

[gcomneno]

Thanks for the review! I’ve rewritten the branch history so this PR now contains only the common.mk help output fix (single commit, single file). The unrelated changes have been moved back to their respective PRs.

[jahn-junior]

Much better. Thanks

[asanvaq]

Thanks!

[gcomneno]

Thanks. I checked the failing QA job for this PR.

The failing test appears to be unrelated to the common.mk help output change in this PR. The failure comes from the Python plugin integration path and is caused by a package fetch error (python3.12 ... 404 Not Found) during staging.

Given that, this looks like CI noise / external environment drift rather than a regression introduced by this change. Would it make sense to treat this class of unrelated failures separately so they do not block small, unrelated fixes like this one?

[gcomneno]

Hi! Just gently following up on this approved PR.

As far as I can tell, the remaining blockers are stale/unrelated CI failures rather than feedback on the common.mk help output change itself.

Could someone please rerun the failed jobs when convenient, or let me know if anything else is needed from my side?