diff --git a/UnrealHyperTwist/Source/UnrealHyperTwist/Private/HyperTwistSkills/HyperTwistSkillTypes.cpp b/UnrealHyperTwist/Source/UnrealHyperTwist/Private/HyperTwistSkills/HyperTwistSkillTypes.cpp
index e1a9f37..accb70b 100644
--- a/UnrealHyperTwist/Source/UnrealHyperTwist/Private/HyperTwistSkills/HyperTwistSkillTypes.cpp
+++ b/UnrealHyperTwist/Source/UnrealHyperTwist/Private/HyperTwistSkills/HyperTwistSkillTypes.cpp
@@ -717,6 +717,36 @@ bool FHyperTwistSkillAuditLedgerState::IsStructurallyValid() const
 		&& bCommandServiceProvenanceVisible == bComputedCommandProvenanceVisible;
 }
 
+bool FHyperTwistSkillValidationContractCase::IsStructurallyValid() const
+{
+	if (CaseId.IsEmpty()
+		|| SkillId.IsEmpty()
+		|| Kind == EHyperTwistSkillValidationContractKind::None
+		|| ExecutionMode == EHyperTwistSkillValidationExecutionMode::None
+		|| ExpectedCommandSurfaceId.IsEmpty()
+		|| ExpectedServiceBindingId.IsEmpty()
+		|| RequiredTemplateSectionIds.Num() == 0
+		|| ExpectedArtifactKinds.Num() == 0)
+	{
+		return false;
+	}
+
+	if (!HyperTwistSkillTypesInternal::AreAllStringsPopulated(RequiredTemplateSectionIds)
+		|| !HyperTwistSkillTypesInternal::AreAllStringsPopulated(ExpectedArtifactKinds))
+	{
+		return false;
+	}
+
+	const bool bLiveMode =
+		ExecutionMode == EHyperTwistSkillValidationExecutionMode::LiveContract;
+	if (bLiveMode && !bUsesAuditLedgerEvidence)
+	{
+		return false;
+	}
+
+	return true;
+}
+
 bool FHyperTwistSkillAuthoringHarnessState::IsStructurallyValid() const
 {
 	if (RegistryId.IsEmpty()
diff --git a/UnrealHyperTwist/Source/UnrealHyperTwist/Public/HyperTwistSkills/HyperTwistSkillTypes.h b/UnrealHyperTwist/Source/UnrealHyperTwist/Public/HyperTwistSkills/HyperTwistSkillTypes.h
index aa8f9e2..f86088a 100644
--- a/UnrealHyperTwist/Source/UnrealHyperTwist/Public/HyperTwistSkills/HyperTwistSkillTypes.h
+++ b/UnrealHyperTwist/Source/UnrealHyperTwist/Public/HyperTwistSkills/HyperTwistSkillTypes.h
@@ -1090,45 +1090,7 @@ struct FHyperTwistSkillValidationContractCase
 	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "HyperTwist")
 	FString Summary;
 
-	bool IsStructurallyValid() const
-	{
-		if (CaseId.IsEmpty()
-			|| SkillId.IsEmpty()
-			|| Kind == EHyperTwistSkillValidationContractKind::None
-			|| ExecutionMode == EHyperTwistSkillValidationExecutionMode::None
-			|| ExpectedCommandSurfaceId.IsEmpty()
-			|| ExpectedServiceBindingId.IsEmpty()
-			|| RequiredTemplateSectionIds.Num() == 0
-			|| ExpectedArtifactKinds.Num() == 0)
-		{
-			return false;
-		}
-
-		for (const FString& SectionId : RequiredTemplateSectionIds)
-		{
-			if (SectionId.IsEmpty())
-			{
-				return false;
-			}
-		}
-
-		for (const FString& ArtifactKind : ExpectedArtifactKinds)
-		{
-			if (ArtifactKind.IsEmpty())
-			{
-				return false;
-			}
-		}
-
-		const bool bLiveMode =
-			ExecutionMode == EHyperTwistSkillValidationExecutionMode::LiveContract;
-		if (bLiveMode && !bUsesAuditLedgerEvidence)
-		{
-			return false;
-		}
-
-		return true;
-	}
+	bool IsStructurallyValid() const;
 };
 
 USTRUCT(BlueprintType)
diff --git a/docs/v6_5_deep_manual_pack/HyperTwist/DEVELOPMENT.md b/docs/v6_5_deep_manual_pack/HyperTwist/DEVELOPMENT.md
index 72bd4fa..20e0bde 100644
--- a/docs/v6_5_deep_manual_pack/HyperTwist/DEVELOPMENT.md
+++ b/docs/v6_5_deep_manual_pack/HyperTwist/DEVELOPMENT.md
@@ -293,6 +293,24 @@ Latest GitNexus wrapper hardening follow-up still on `2026-06-24`:
   - `Quality: 6139`
   - all `7` rules passing
 
+Latest later vanilla-refactor follow-up still on `2026-06-24`:
+
+- the next bounded structural seam then moved
+  `FHyperTwistSkillValidationContractCase::IsStructurallyValid()` out of the
+  public skill header and into
+  `Private/HyperTwistSkills/HyperTwistSkillTypes.cpp`
+- that kept the change fully behavior-preserving while reducing another small
+  piece of inline validator weight inside the public skill-type header
+- `scripts/run-hypertwist-sentrux-source-only.sh` then improved again to:
+  - `Quality: 6145`
+  - all `7` rules passing
+- current truthful “vanilla refactor” reading tightens one step further:
+  - the larger website/manual truth lane is already drained
+  - GitNexus and Sentrux ownership hardening is now landed
+  - remaining structural work is now smaller still and should be chosen only
+    when it materially improves maintenance rather than because a large obvious
+    hotspot remains
+
 Latest same-day browser/distribution continuity follow-up still on `2026-06-24`:
 
 - auth-entry, protected-route loading, dashboard auth health, and release-authority fallback states now share a more deliberate operator-facing recovery shape instead of scattering single-line warnings across public and protected surfaces