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/lib/ds.ts

@@ -7,7 +7,7 @@ import { CONF_HIGH, CONF_MEDIUM, DQ_HIGH, DQ_MEDIUM } from './constants'
 export const DS_COLORS = {
   resultType: {
     VERIFIED_PORTFOLIO:  { bg: 'rgba(30,58,95,0.10)',    fg: '#1e3a5f' },
-    EXTERNAL_MARKET:     { bg: 'rgba(180,83,9,0.10)',    fg: '#b45309' },
+    EXTERNAL_MARKET:     { bg: 'rgba(30,58,95,0.10)',    fg: '#1e3a5f' },
     MAISON_WORK:         { bg: 'rgba(3,105,161,0.10)',   fg: '#0369a1' },
     FUTURE_AVAILABILITY: { bg: 'rgba(109,40,217,0.10)',  fg: '#6d28d9' },
   },