refactor: replace hardcoded hex colors with design tokens across priority components

- Add DS_COLORS.heat, DS_COLORS.futureCard, INQUIRY_STATUS_META tokens to ds.ts
- Eliminate 4 duplicate RESULT_TYPE_META / TYPE_META constants (now all use ds.ts)
- Eliminate 3 duplicate scoreColor / SCORE_COLOR functions (now all use matchScoreHex)
- HeatBadge: use DS_COLORS.heat.VERY_HOT / HOT tokens
- FutureAvailabilityCard: use DS_COLORS.futureCard.controlled / signal tokens
- IntelligenceMatchCard: import RESULT_TYPE_META from ds.ts, remove primary override
- MatchScoreDisplay: replace local scoreColor() with matchScoreHex()
- CompareColumnHeader: remove local TYPE_META + SCORE_COLOR, use ds.ts + utils.ts
- CompareTableBody: import RESULT_TYPE_META + matchScoreHex, fix #7c3aed → token
- compareUtils: remove TYPE_META + SCORE_COLOR, use dataQualityHex in scoreBar
- Anfragen + AnfragenInquiryItem: deduplicate STATUS_CONFIG → INQUIRY_STATUS_META
- Anfragen: #1e3a5f → 'primary.main', KI alert → futureCard.controlled tokens
- AnfragenMessageBubble: own-message bubble → 'primary.main', AI bubble → tokens
- ScoreBreakdownPanel: #1e3a5f → 'primary.main', #6d28d9 → futureCard.controlled
- ESLint: add warn rule against new hex colors in component sx props

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

src/components/demand/AnfragenMessageBubble.tsx

@@ -1,5 +1,6 @@
 import { Box, Typography } from '@mui/material'
 import { Bot, Building2, FileText } from 'lucide-react'
+import { DS_COLORS } from '../../lib/ds'
 import type { InquiryMessage } from '../../domain/inquiry'
 
 export function AnfragenMessageBubble({ msg }: { msg: InquiryMessage }) {
@@ -22,15 +23,15 @@ export function AnfragenMessageBubble({ msg }: { msg: InquiryMessage }) {
           maxWidth: { xs: '88%', md: '72%' },
           px: 2, py: 1.25,
           borderRadius: isOwnMessage ? '18px 18px 4px 18px' : '18px 18px 18px 4px',
-          bgcolor: isOwnMessage ? '#1e3a5f' : isAI ? '#f5f3ff' : 'white',
-          border: isOwnMessage ? 'none' : isAI ? '1px solid #ddd6fe' : '1px solid #e2e8f0',
+          bgcolor: isOwnMessage ? 'primary.main' : isAI ? DS_COLORS.futureCard.controlled.headerBg : 'white',
+          border: isOwnMessage ? 'none' : isAI ? `1px solid ${DS_COLORS.futureCard.controlled.border}` : '1px solid #e2e8f0',
           boxShadow: isOwnMessage ? '0 2px 6px rgba(30,58,95,0.2)' : '0 1px 2px rgba(0,0,0,0.06)',
         }}
       >
         <Typography
           variant="body2"
           sx={{
-            color: isOwnMessage ? 'white' : isAI ? '#5b21b6' : '#1e293b',
+            color: isOwnMessage ? 'white' : isAI ? DS_COLORS.futureCard.controlled.badgeText : '#1e293b',
             whiteSpace: 'pre-wrap', lineHeight: 1.65, fontSize: '0.875rem',
           }}
         >