SIP217 Update harvest and fert event handling

[Alomir]

Summary

• What: Short description of the functional or documentation changes
• Motivation: Why is this change needed?

How was this change tested?

List steps taken to test this change, with appropriate outputs if applicable

If changes are needed for any sipnet.out files in the test/smoke subdirectories, then include output from
tools/smoke_check.py by running the commands below and pasting the output at the end of this PR. Note that
this must be run BEFORE submitting changes to any sipnet.out files.

make smoke
python tools/smoke_check.py run verbose <list tests/smoke subdirectories with changed outputs>

Run python tools/smoke_check.py help for more info.

Reproduction steps

If appropriate, list steps to reproduce the change locally

Related issues

• Fixes #

Checklist

• Related issues are listed above. PRs without an approved, related issue may not get reviewed.
• PR title has the issue number in it ("[#] <concise description of proposed change>")
• Tests added/updated for new features (if applicable)
• Documentation updated (if applicable)
• docs/CHANGELOG.md updated with noteworthy changes
• Code formatted with clang-format (run git clang-format if needed)

---

Note: See CONTRIBUTING.md for additional guidance. This repository uses automated formatting checks; if the pre-commit hook blocks your commit, run git clang-format to format staged changes.