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/supply/ReminderDetailDrawer.tsx

@@ -105,7 +105,7 @@ export function ReminderDetailDrawer() {
                 <Typography variant="caption" color="text.secondary">Fläche: {reminder.areaSqm.toLocaleString('de-CH')} m²</Typography>
                 {reminderProperty?.leaseContractUrl ? (
                   <Box sx={{ display: 'flex', alignItems: 'center', gap: 0.75, mt: 0.5 }}>
-                    <FileText size={12} color="#1e3a5f" />
+                    <FileText size={12} color="#152642" />
                     <Button
                       size="small"
                       variant="outlined"
@@ -113,7 +113,7 @@ export function ReminderDetailDrawer() {
                       href={reminderProperty.leaseContractUrl}
                       target="_blank"
                       rel="noopener noreferrer"
-                      sx={{ textTransform: 'none', fontSize: '0.68rem', py: 0.125, px: 0.75, borderColor: '#cbd5e1', color: '#1e3a5f' }}
+                      sx={{ textTransform: 'none', fontSize: '0.68rem', py: 0.125, px: 0.75, borderColor: '#cbd5e1', color: '#152642' }}
                     >
                       {reminderProperty.leaseContractName ?? 'Mietvertrag'}
                     </Button>