Feature/acastill lightpropagation update

[asanchezcastillo]

Description

This PR does:

• Modify the standard MC workflow to add lightpropagationcorrection module to the default chain.
• Clean up and factorization of the lightpropagationcorrection module.
• Include the particle propagation time calculation. This is saved as an attribute of the CorrectedOpFlashTiming object. This is required for downstream correction (more information here)

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$${\color{blue}\bf{\textrm{IMPORTANT UPDATE Feb 2nd 2026:}}}$$ If you are making a PR which is intended as a patch for the CURRENT production for gen 2 SBND analyses, you must make two PRs: one for develop and one for the production/sbnd-gen2 branch.

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Checklist

• Added at least 1 label from available labels.
• Assigned at least 1 reviewer under Reviewers,
• Assigned all contributers including yourself under Assignees
• Linked any relevant issues under Developement
• Does this PR affect CAF data format? If so, please assign a CAF maintainer (PetrilloAtWork or JosiePaton) as additional reviewer.
• Does this affect the standard workflow?
• Is this PR a patch for the ongoing production? If so, separate PR must also be made for production/v10_06_00 branch!

Relevant PR links (optional)

Does this PR require merging another PR in a different repository (such as sbnanobj/sbnobj etc.)?
This PRs should be merged with
SBNSoftware/sbnobj#175
SBNSoftware/sbncode#666
SBNSoftware/sbnanaobj#195

Link(s) to docdb describing changes (optional)

Is there a docdb describing the issue this solves or the feature added?

[tjones79]

This looks great thanks @asanchezcastillo

Few minor changes before approval :)

[asanchezcastillo]

Hi @tjones79 ! Thanks for the thorough review. I have implemented the requested changes and the PR should be good to go!

[aantonakis]

Hi @JosiePaton , this PR requires your review since it affects the CAF data format. Just checking if you're available to review this PR soon or if we should reach out to a different CAF expert? thanks

[JosiePaton]

Hi @JosiePaton , this PR requires your review since it affects the CAF data format. Just checking if you're available to review this PR soon or if we should reach out to a different CAF expert? thanks

Hi! @tjones79 is now handling CAF changes for SBND as far as I'm aware, so the comments above should do it!

[aantonakis]

Sorry @JosiePaton and thanks @tjones79 for the review! I will try to get the checklist changed to have @tjones79 under CAF reviewers for the future.