feat: F017 data quality system — trust layer across all decision surfaces
New components: DataQualityBadge, DataQualityPanel, DataQualityProgress,
FreshnessIndicator, CriticalFieldWarning, MissingDataList, ProvenancePanel
Service: calculatePropertyQuality, getMissingCriticalFields,
getQualityWarnings, getRecommendedActions with field→action mapping
PropertyDetailView: tab 5/6 now use DataQualityPanel + ProvenancePanel
Datenpflege page: DataQualityBadge, FreshnessIndicator, filter by level,
recommended action column showing highest-priority next step per property
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Benjamin Sutter
1d0cb8b154