Fix TypeScript build errors

FIXES_SESSION_9.md

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+# Type Error Fixes - Session 9
+
+## ✅ Completed Fixes
+
+### Consensus NCE Services
+1. **nce-engine.service.ts** ✅
+   - Added Prisma import
+   - Fixed metadata: Added `as Prisma.InputJsonValue` casting (empty object)
+   - Fixed consensusData: Added `as Prisma.InputJsonValue` casting (empty object)
+   - Fixed stateData: Added `as Prisma.InputJsonValue` casting (empty object)
+
+2. **nce-neural.service.ts** ✅
+   - Added Prisma import
+   - Fixed neuralData: Added `as Prisma.InputJsonValue` casting (object with scbSignals and aiForecasts)
+
+### Contracts Services
+1. **contract-fabric.service.ts** ✅
+   - Added Prisma import
+   - Fixed contractData: Added `as Prisma.InputJsonValue` casting (empty object)
+   - Fixed metadata: Added `as Prisma.InputJsonValue` casting with null handling
+
+2. **rssck.service.ts** ✅
+   - Added Prisma import
+   - Fixed contractTerms: Changed `|| null` to proper null handling with `Prisma.JsonNull` (2 instances)
+   - Fixed settlementTerms: Changed `|| null` to proper null handling with `Prisma.JsonNull` (2 instances)
+   - Fixed riskTerms: Changed `|| null` to proper null handling with `Prisma.JsonNull` (2 instances)
+
+## Key Patterns Applied
+
+### Empty Object Casting
+- `{}` → `{} as Prisma.InputJsonValue` for empty objects assigned to JsonValue fields
+
+### Null Handling for Optional JsonValue
+- `value || null` → `value ? (value as Prisma.InputJsonValue) : Prisma.JsonNull`
+- This ensures proper type compatibility for nullable JsonValue fields
+
+## Summary
+
+Fixed JsonValue errors in:
+- **Consensus NCE**: 2 files (4 instances)
+- **Contracts**: 2 files (7 instances)
+
+**Total Files Fixed in This Session**: 4 files
+**Total JsonValue Errors Fixed**: ~11 instances
+
+## Overall Progress
+
+- **Total Errors**: ~583 (down from ~586)
+- **JsonValue Errors Remaining**: ~179
+- **JsonValue Errors Fixed So Far**: ~130+ instances across ~56 files
+- **Critical Errors**: Still 0 (all resolved)
+