- Fix PredicateSchemaValidator to use static Lazy initialization
avoiding JsonSchema.Net global registry conflicts in tests
- Add IContextPolicyGate interface for gates without MergeResult
- Rename ICveGate/IAttestationGate to avoid conflicts with IPolicyGate
- Add static Pass/Fail helper methods to GateResult record
- Unseal PolicyGateContext to allow ExtendedPolicyGateContext
- Add missing Type/Constraint properties to AuthorityScope and Principal
- Fix PolicyBundle to use ConditionDescription instead of Condition func
- Rename ExceptionResult to ExceptionCheckResult to avoid duplicate
- Rename GateResult static helper class to GateResultFactory
- Temporarily exclude 9 incomplete gate files with missing contracts
- Add AttestationContextExtensions for GetAttestation/GetVexSummary etc
All 216 Attestor.Core tests pass.
- Introduced `VexStatusChipComponent` to display VEX status with color coding and tooltips.
- Implemented integration tests for reachability drift detection, covering various scenarios including drift detection, determinism, and error handling.
- Enhanced `ScannerToSignalsReachabilityTests` with a null implementation of `ICallGraphSyncService` for better test isolation.
- Updated project references to include the new Reachability Drift library.
