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/anfragencenter/InquiryCard.tsx

@@ -20,12 +20,12 @@ export function InquiryCard({ inquiry, selected, onClick }: InquiryCardProps) {
         p: 2,
         borderRadius: 1.5,
         border: '1px solid',
-        borderColor: selected ? '#1e3a5f' : '#e2e8f0',
+        borderColor: selected ? '#152642' : '#e8e7e4',
         bgcolor: selected ? '#f1f5f9' : 'white',
         cursor: 'pointer',
         transition: 'all 0.15s',
         '&:hover': {
-          borderColor: selected ? '#1e3a5f' : '#94a3b8',
+          borderColor: selected ? '#152642' : '#94a3b8',
           boxShadow: '0 2px 6px rgba(15,23,42,0.06)',
         },
         display: 'flex',