feat(supply): Anfragencenter — embedded property cards in public need detail

Add EmbeddedPropertyCard and surface matching properties inside the
public need detail view. Add needToParsedCriteria() mapper to convert a
stored Need back into parsed criteria for re-running search/matching.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/components/anfragencenter/PublicNeedList.tsx

@@ -16,8 +16,8 @@ export function PublicNeedList({ selectedNeedId, onSelect, fullWidth }: PublicNe
   return (
     <Box
       sx={{
-        width: fullWidth ? '100%' : 280,
-        minWidth: fullWidth ? 'unset' : 280,
+        width: fullWidth ? '100%' : 260,
+        minWidth: fullWidth ? 'unset' : 260,
         flexShrink: 0,
         borderRight: fullWidth ? 'none' : '1px solid #e2e8f0',
         bgcolor: 'white',