feat: premium redesign — DM Serif, refined palette, flat score badges

- Design tokens (ds.ts, theme.ts, scoreTheme.ts): new warm palette
  (#152642 navy, #f9f8f6 warm white, #e8e7e4 borders, #b8975a gold accent),
  flat score tier badges replacing CSS gradients, Inter + DM Serif Display typography
- Card components: white-background cards, DM Serif score numbers, max-2 badge
  chips with +N overflow tooltip, editorial score badge positioning
- Layout shell: gold left-accent nav active state, 64px top bar, outlined
  workspace chip, DM Serif page titles
- Shared atoms: GenericBadge (outlined/solid variants), ResultFilterBar
  (simplified chip styles), DecisionContextPanel (dot metrics, no left accent)
- Global replacement (118 files): #1e3a5f→#152642, #e2e8f0→#e8e7e4,
  #f4f6f9→#f9f8f6 — all handled via Node.js for proper UTF-8 safety

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

src/components/review/ReviewDetailPanel.tsx

@@ -121,7 +121,7 @@ export function ReviewDetailPanel({
                   sx={{
                     height: 4,
                     borderRadius: 2,
-                    bgcolor: '#e2e8f0',
+                    bgcolor: '#e8e7e4',
                     '& .MuiLinearProgress-bar': {
                       bgcolor: task.confidenceScore >= 0.7 ? '#1a7a4a' : task.confidenceScore >= 0.5 ? '#d97706' : '#c0392b',
                     },

src/components/review/ReviewEntityTypeBadge.tsx

@@ -3,7 +3,7 @@ import type { ReviewEntityType } from '../../domain/review'
 
 const CONFIG: Record<ReviewEntityType, { label: string; color: string }> = {
   FUTURE_SIGNAL:        { label: 'Zukunftssignal',   color: '#7c3aed' },
-  MATCH_EXPLANATION:    { label: 'Match-Begründung', color: '#1e3a5f' },
+  MATCH_EXPLANATION:    { label: 'Match-Begründung', color: '#152642' },
   LOW_CONFIDENCE_MATCH: { label: 'Niedr. Konfidenz', color: '#ea580c' },
   CONTACT_RELEASE:      { label: 'Kontaktfreigabe',  color: '#0891b2' },
   AI_OUTPUT:            { label: 'AI-Output',        color: '#4f46e5' },

src/components/review/ReviewTaskCard.tsx

@@ -76,7 +76,7 @@ export function ReviewTaskCard({ task, isSelected, onSelect }: ReviewTaskCardPro
             sx={{
               height: 3,
               borderRadius: 2,
-              bgcolor: '#e2e8f0',
+              bgcolor: '#e8e7e4',
               '& .MuiLinearProgress-bar': {
                 bgcolor: task.confidenceScore >= 0.7 ? '#1a7a4a' : task.confidenceScore >= 0.5 ? '#d97706' : '#c0392b',
               },