feat(domain): F004 – expand domain model layer

- need.ts: add SizeRange, MustHaveCriterion, WeightedPreference types; extend Need with desiredLocation, sizeRange, mustHaveCriteria, weightedPreferences, status
- futureSignal.ts: add SignalEvidence type; extend FutureSignal with title, evidence, matchabilityScore, reviewStatus
- aiOutput.ts: new AIOutput entity with type, inputHash, outputJson, provider/model/promptVersion/schemaVersion, reviewStatus
- activityEvent.ts: new ActivityEvent entity with actorId, action, entityType, entityId, timestamp, metadata
- unifiedResult.ts: discriminated union (VerifiedPortfolioResult | ExternalMarketResult | FutureAvailabilityResult)
- index.ts: export all three new files
- Properties.tsx: add LIGHT_INDUSTRIAL + UNKNOWN cases to exhaustive switches

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

src/domain/match.ts

@@ -1,52 +1,108 @@
-import type { MatchStrength, RiskLevel } from './enums'
+import type { MatchStrength, MatchStatus, RiskLevel, ResultType, ConfidenceLevel } from './enums'
+
+// ── Score Building Blocks ─────────────────────────────────────────────────────
 
 export interface ScoreBreakdown {
-  hardMatchScore: number
-  softFactorScore: number
-  confidenceModifier: number
-  dataQualityModifier: number
-  totalScore: number
+  hardMatchScore: number       // 0–100 hard criteria score
+  softFactorScore: number      // 0–100 soft factors score
+  confidenceModifier: number   // -20 to +5 adjustment
+  dataQualityModifier: number  // -15 to 0 adjustment
+  totalScore: number           // final 0–100
 }
 
 export interface ScoreFactor {
   criterion: string
-  weight: number
-  score: number
-  contribution: number
+  weight: number        // 0–1 relative weight
+  score: number         // 0–100
+  contribution: number  // weighted points added to total
   explanation: string
 }
 
-export interface Tradeoff {
+// ── Explainability Types ──────────────────────────────────────────────────────
+
+/** Canonical tradeoff type (F004) */
+export interface TradeOff {
   criterion: string
   concern: string
   severity: 'LOW' | 'MEDIUM' | 'HIGH'
   mitigation?: string
+  impactOnScore?: number
+}
+
+/** @deprecated Use TradeOff — kept for backward compatibility */
+export type Tradeoff = TradeOff
+
+export interface Risk {
+  category: string       // e.g. "Datenverfügbarkeit", "Standortrisiko"
+  description: string
+  level: RiskLevel
+  mitigation?: string
+}
+
+export interface MissingDataItem {
+  field: string
+  importance: 'CRITICAL' | 'HIGH' | 'MEDIUM' | 'LOW'
+  description: string
+  impact: string         // how it affects the match score
+}
+
+export interface NextBestAction {
+  label: string          // e.g. "Besichtigung anfragen"
+  description?: string
+  priority: 'HIGH' | 'MEDIUM' | 'LOW'
+  actionType: 'CONTACT' | 'VERIFY' | 'REVIEW' | 'SHORTLIST' | 'COMPARE' | 'SCHEDULE'
+  externalUrl?: string
 }
 
 export interface AlternativeStrategy {
   title: string
   description: string
   expectedScore?: number
+  reasoning?: string
 }
 
+// ── Match (core entity) ───────────────────────────────────────────────────────
+
 export interface Match {
   id: string
-  propertyId: string
   needId: string
-  matchScore: number
+
+  // Result reference — works for all three result types
+  resultId?: string      // preferred: generic result ID
+  resultType?: ResultType
+  propertyId: string     // legacy alias for resultId (VERIFIED_PORTFOLIO)
+
+  // Scoring
+  matchScore: number     // 0–100
   matchStrength: MatchStrength
   scoreBreakdown: ScoreBreakdown
+  confidenceLevel: number  // 0–1 numeric
+  confidenceLevelLabel?: ConfidenceLevel
+  dataConfidenceScore?: number  // 0–1 data quality contribution
+
+  // Explainability
   positiveFactors: ScoreFactor[]
   negativeFactors: ScoreFactor[]
-  tradeoffs: Tradeoff[]
+  tradeoffs: TradeOff[]
+  tradeOffs?: TradeOff[] // alias for F004 naming convention
+  risks?: Risk[]
+  missingData?: MissingDataItem[]
+  nextBestActions?: NextBestAction[]
   explainabilitySummary: string
-  confidenceLevel: number
+  explanation?: string   // alias / longer form
+
+  // Risk
   riskLevel: RiskLevel
   uncertaintyIndicators: string[]
+
+  // Alternatives
   alternativeStrategies?: AlternativeStrategy[]
+
+  // Review / lifecycle
+  status?: MatchStatus
+  isApproved?: boolean   // legacy — prefer status
   reviewedBy?: string
   reviewedAt?: string
-  isApproved?: boolean
   organizationId?: string
   createdAt: string
   updatedAt: string