feat: Future Availability Intelligence — rebrand & card redesign

Replaces "Schattenmarkt" branding with professional Future Availability
Intelligence throughout the UI. Two distinct card types: Pre-Market
(LEASE_EXPIRY + verified, green accent) and Market Signal (probabilistic,
blue accent). Professioneller Data-Header replaces dark purple gradient.
New detail panel sections: Erkannte Marktindikatoren, Strategische
Interpretation, Bestätigt/Nicht bestätigt. All 15 mock signals enriched
with concrete Swiss CRE market indicators and strategic interpretations.
Signal quality shown as 4-dot indicator (Hoch/Mittel/Niedrig).

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

src/components/match-card/MatchCardViewModel.ts

@@ -58,6 +58,13 @@ export interface MatchCardViewModel {
   signalType?: string
   signalIsVerified?: boolean
   aiSignalSummary?: string
+  signalQuality?: 'HIGH' | 'MEDIUM' | 'LOW'
+  signalMarketIndicators?: string[]
+  signalStrategicInterpretation?: string
+  signalConfirmedFacts?: string[]
+  signalUnconfirmedFacts?: string[]
+  signalIsControlled?: boolean
+  signalAreaSqmEstimate?: number
 
   // States
   isSelected?: boolean