When an observation response accidentally contains a <summary> tag with
plain text (no <request>/<investigated>/etc. sub-tags), parseSummary was
creating empty SESSION SUMMARY records with all fields as empty strings.
Add an all-null guard AFTER field extraction: if none of the 5 sub-tags
matched, the <summary> match is a false positive and we return null.
This is distinct from the commented-out validation above (which rejected
summaries with SOME missing fields). We only reject when ALL are absent —
real partial summaries are still saved per the maintainer's explicit note.
Closes#1360
Co-Authored-By: Claude <noreply@anthropic.com>
Ousama Ben Younes