refactor: consolidate duplicated UI score/color/badge logic into lib/

- Add matchScoreHex(), criterionScoreColor(), criterionScoreTextColor() to lib/utils.ts
- Add RESULT_TYPE_META (labels + colors) to lib/ds.ts as single source of truth
- Remove 5 local scoreColor() functions: StrongMatchMiniCard, MatchListCard,
  pipelineUtils (re-exported as matchScoreHex), CriterionRow, ScoreBreakdownPanel,
  ScoreInlineBreakdown
- Remove local RESULT_TYPE_META/TYPE_META from MatchCardHeader, ResultTypeBadge;
  remove RESULT_TYPE_LABEL/COLOR from pipelineConstants — all now use lib/ds.ts
- Replace local confidenceColor() in MatchCardHeader, ConfidenceFieldBadge,
  ReliabilityScorePanel with confidenceHex() from lib/utils.ts
- Replace local qualityColor() in propertyHelpers, DataQualityWidget with
  dataQualityColor() from lib/utils.ts
- Fix FUTURE_AVAILABILITY label inconsistency ('Future'/'Zukunft' → 'Zukunftssignal')
- Fix EXTERNAL_MARKET label inconsistency ('Direktinserat' → 'Plattform')
- tsc --noEmit passes with zero errors

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/match-card/MatchCardHeader.tsx

@@ -3,21 +3,10 @@ import { Building2 } from 'lucide-react'
 import { MatchScoreDisplay } from './MatchScoreDisplay'
 import { HeatBadge } from '../shared'
 import { useSessionStore } from '../../stores/sessionStore'
+import { RESULT_TYPE_META } from '../../lib/ds'
+import { confidenceHex } from '../../lib/utils'
 import type { MatchCardViewModel } from './MatchCardViewModel'
 
-const RESULT_TYPE_META: Record<string, { label: string; color: string }> = {
-  VERIFIED_PORTFOLIO:  { label: 'Plattform',      color: '#1e3a5f' },
-  EXTERNAL_MARKET:     { label: 'Plattform',      color: '#1e3a5f' },
-  MAISON_WORK:         { label: 'Maison Work',    color: '#0369a1' },
-  FUTURE_AVAILABILITY: { label: 'Zukunftssignal', color: '#7c3aed' },
-}
-
-function confidenceColor(score: number): string {
-  if (score >= 0.75) return '#1a7a4a'
-  if (score >= 0.55) return '#d97706'
-  return '#c0392b'
-}
-
 interface Props {
   vm: MatchCardViewModel
   compact?: boolean
@@ -61,7 +50,7 @@ export function MatchCardHeader({ vm, compact }: Props) {
         <Chip
           label={`${confPct}% Konfidenz`}
           size="small"
-          sx={{ bgcolor: confidenceColor(vm.confidenceScore), color: 'white', fontSize: 11 }}
+          sx={{ bgcolor: confidenceHex(vm.confidenceScore), color: 'white', fontSize: 11 }}
         />
         {vm.availabilityLabel && (
           <Chip label={vm.availabilityLabel} size="small" variant="outlined" sx={{ fontSize: 11 }} />