Below "Abgelehnte Wohnungen", surface flats that survived the time
filter and aren't rejected but failed at least one of the user's
filters. Same collapsed-card style. Action buttons are replaced by
chips naming each failed dimension — "Zimmer", "Preis", "Größe",
"WBS", "Bezirk" — so it's obvious which constraint to relax.
Refactored matching: flat_matches_filter now delegates to a new
flat_filter_failures(flat, f) that returns the failed-dimension
labels (empty list = full match). rooms_min and rooms_max collapse
to a single "Zimmer" chip; reasons emit in stable _REASON_ORDER for
consistent rendering. The section is suppressed entirely when the
user has no filters set, since "everything matches" makes the chips
meaningless.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>