Add a summary_snippet column to findEnrichmentData using ts_headline on
documents.summary, only when the summary's tsvector matches the query.
Expose it via SearchMatchData.summarySnippet / summaryOffsets and render
a "Zusammenfassung" / "Summary" / "Resumen" labelled row in the document
list — identical treatment to the transcription snippet row.
Fixes the case where a document appeared in search results with no
visible match explanation (e.g. searching "frucht" found a document
whose summary mentioned "Früchte").
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Add failing test for DATE-sort + undated doc showing "Undatiert" fallback
label, then fix DocumentList by null-coalescing sort before comparison
((sort ?? 'DATE') === 'DATE'). Test uses one dated + one undated doc to
produce two groups and trigger GroupDivider rendering.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Documents sorted by DATE show year dividers, SENDER/RECEIVER sort
shows person name dividers. Dividers only appear when there are 2+
distinct groups. Multi-receiver docs appear in each receiver group.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
