refactor: architecture compliance pass — DS tokens, hook boundary, god component split, AI hardening

- DS token migration: Anfragen.tsx + child components (AnfragenInquiryItem, AnfragenMessageBubble)
  fully migrated; DS_TEXT.brandDark added; scoreTheme.ts moved to src/lib/ with re-export proxy
- Hook boundary: Results.tsx no longer calls needService directly — routes through useNeeds()
  with optional refetchOnMount/gcTime overrides
- NewListing.tsx (440L) split into useNewListingForm hook + 8 section components under
  src/components/new-listing/; page shell reduced to 121 lines
- AI hardening: Zod .strict() on all schemas, AIProvenance extended with schemaVersion/
  fallbackReason/traceId/latencyMs, AITraceStore stats with p50/p90/p99 + failure breakdowns,
  MockAIService buildFollowUpQuestions with priority ordering + area-ambiguity detection,
  prompt templates updated (LIGHT_INDUSTRIAL, budget unit, ambiguity detection, decimal precision)
- Tests: all 154 passing; fixed test regression caused by OfferEmailResponseSchema body min(50)

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

src/components/shared/scoreTheme.ts

@@ -1,37 +1,2 @@
-export type ScoreTier = 'gold' | 'silver' | 'bronze'
-
-export function getScoreTier(score: number): ScoreTier {
-  if (score >= 90) return 'gold'
-  if (score >= 80) return 'silver'
-  return 'bronze'
-}
-
-export const SCORE_THEME = {
-  gold: {
-    gradient:    'linear-gradient(135deg,#f8e642 0%,#d4920e 100%)',
-    border:      '#c9900c',
-    glow:        'rgba(212,146,14,0.35)',
-    text:        '#7a4f00',
-    label:       'Top Match',
-    cardBorder:  '#fbbf24',
-    cardBg:      'linear-gradient(160deg,#fffbeb,#fef3c7)',
-  },
-  silver: {
-    gradient:    'linear-gradient(135deg,#f1f5f9 0%,#cbd5e1 100%)',
-    border:      '#94a3b8',
-    glow:        'rgba(148,163,184,0.30)',
-    text:        '#334155',
-    label:       'Starkes Match',
-    cardBorder:  '#cbd5e1',
-    cardBg:      'linear-gradient(160deg,#f8fafc,#f1f5f9)',
-  },
-  bronze: {
-    gradient:    'linear-gradient(135deg,#fde8c8 0%,#d4956a 100%)',
-    border:      '#c07a46',
-    glow:        'rgba(192,122,70,0.25)',
-    text:        '#7c3d0c',
-    label:       'Gutes Match',
-    cardBorder:  '#f5d0a9',
-    cardBg:      'linear-gradient(160deg,#fdf6f0,#fef3e8)',
-  },
-} as const
+export { getScoreTier, SCORE_THEME } from '../../lib/scoreTheme'
+export type { ScoreTier } from '../../lib/scoreTheme'