refactor(collision): improve wall slide behavior for jumping vs grounded movement

- Remove bShowDebug parameter from PerformSweep and ResolveMovement
- Fix wall slide calculation to distinguish jumping from grounded movement
  * Allow upward wall slide during jumps (RemainingDelta.Z > 0)
  * Force horizontal movement only when grounded (RemainingDelta.Z <= 0)
- Add RemainingDelta scaling by Hit.Time for accurate collision response
- Clean up comments: remove Russian text, reduce verbosity

Source/TengriPlatformer/Movement/Collision/TengriCollisionResolver.cpp

@@ -175,8 +175,7 @@ bool UTengriCollisionResolver::StepUp(
 	}
 
 	// Validate actual height difference
-	const float RealHeightDiff = DownSweep.Location.Z - StartLocation.Z;
-	if (RealHeightDiff > (MaxStepHeight + TengriPhysics::StepHeightTolerance))
+	if (const float RealHeightDiff = DownSweep.Location.Z - StartLocation.Z; RealHeightDiff > (MaxStepHeight + TengriPhysics::StepHeightTolerance))
 	{
 		return false;
 	}
@@ -269,13 +268,17 @@ namespace
 		return HorizontalTangent * FVector::DotProduct(RemainingDelta, HorizontalTangent);
 	}
 
-	/** Calculate slide along wall, preventing upward velocity from steep surfaces */
+	/**
+	 * Calculate slide along wall, preventing upward velocity for grounded movement.
+	 * When jumping (RemainingDelta.Z > 0), allow sliding upward along walls.
+	 * When grounded (RemainingDelta.Z <= 0), force horizontal movement only.
+	 */
 	FVector CalculateWallSlide(const FVector& RemainingDelta, const FVector& ImpactNormal)
 	{
 		FVector ClipDelta = UTengriCollisionResolver::ClipVelocity(RemainingDelta, ImpactNormal);
 
-		// If wall would push us up, force horizontal movement only
-		if (ClipDelta.Z > 0.f)
+		// Allow upward wall slide during jumps, prevent it when grounded
+		if (const bool bWasJumping = RemainingDelta.Z > TengriPhysics::MinUpwardVelocity; ClipDelta.Z > 0.f && !bWasJumping)
 		{
 			if (FVector HorizontalTangent = FVector::CrossProduct(ImpactNormal, FVector(0.f, 0.f, 1.f)).GetSafeNormal(); !HorizontalTangent.IsNearlyZero())
 			{
@@ -346,6 +349,12 @@ FTengriSweepResult UTengriCollisionResolver::ResolveMovement(
 		FinalResult.bBlocked = true;
 		FinalResult.Hit = Sweep.Hit;
 
+		// Scale remaining delta by unfinished movement
+		if (Sweep.Hit.Time < 1.0f)
+		{
+			RemainingDelta *= (1.0f - Sweep.Hit.Time);
+		}
+
 		// Classify surface
 		const float NormalZ = Sweep.Hit.ImpactNormal.Z;
 		const bool bIsFloor = Thresholds.IsWalkable(NormalZ);