refactor: split large page components + taxonomy/HeatBadge/FutureAvailability improvements

- Taxonomy: merge VERIFIED_PORTFOLIO + EXTERNAL_MARKET display → 'Plattform' (dark blue) across all surfaces
- HeatBadge: new flame indicator for hot properties (grid, list, pipeline views)
- FutureAvailabilityContextPanel: richer detail page with AI summary, strategic assessment, sources
- Refactor Pipeline.tsx (630→152 lines) → pipeline/PipelineCard, PipelineColumn, PipelineDetailPanel, pipelineConstants, pipelineUtils
- Refactor IntelligenceMatchCard.tsx (483→179 lines) → FutureAvailabilityCard extracted
- Refactor MatchDetail.tsx (559→464 lines) → useMatchDetailData hook, MatchDetailPropertyDetails
- Refactor Compare.tsx (638→485 lines) → compareUtils, CompareCriteriaCard extracted

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

src/components/compare/CompareColumnHeader.tsx

@@ -5,10 +5,10 @@ import { usePipelineStore } from '../../stores/pipelineStore'
 import type { UnifiedMatchResult } from '../../domain/unifiedResult'
 
 const TYPE_META: Record<string, { label: string; color: string }> = {
-  VERIFIED_PORTFOLIO:  { label: 'Verified Portfolio', color: '#1e3a5f' },
-  EXTERNAL_MARKET:     { label: 'Direktinserat',      color: '#d97706' },
-  MAISON_WORK:         { label: 'Maison Work',        color: '#0369a1' },
-  FUTURE_AVAILABILITY: { label: 'Zukunftssignal',     color: '#7c3aed' },
+  VERIFIED_PORTFOLIO:  { label: 'Plattform',      color: '#1e3a5f' },
+  EXTERNAL_MARKET:     { label: 'Plattform',      color: '#1e3a5f' },
+  MAISON_WORK:         { label: 'Maison Work',    color: '#0369a1' },
+  FUTURE_AVAILABILITY: { label: 'Zukunftssignal', color: '#7c3aed' },
 }
 
 const SCORE_COLOR = (s: number) => s >= 78 ? '#1a7a4a' : s >= 52 ? '#d97706' : '#c0392b'