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/features/matching/matchCardAdapter.ts

@@ -104,5 +104,17 @@ export function buildMatchCardViewModel(
     signalType: signal?.signalType,
     signalIsVerified: signal?.isVerified,
     aiSignalSummary: signal?.aiSummary,
+    signalQuality: (() => {
+      if (!signal) return undefined
+      if (signal.isVerified || signal.probability >= 0.70) return 'HIGH'
+      if (signal.probability >= 0.50) return 'MEDIUM'
+      return 'LOW'
+    })(),
+    signalIsControlled: signal?.signalType === 'LEASE_EXPIRY' && signal?.isVerified === true,
+    signalMarketIndicators: signal?.marketIndicators,
+    signalStrategicInterpretation: signal?.strategicInterpretation,
+    signalConfirmedFacts: signal?.confirmedFacts,
+    signalUnconfirmedFacts: signal?.unconfirmedFacts,
+    signalAreaSqmEstimate: signal?.areaSqmEstimate,
   }
 }