test(vehicle): a review shot, and the judge that proves the car is missing

Adds demo-vehicle to the camera list and the visual targets, plus shot 9 in
Screenshots/README.md - marked FAIL, because that is what it shows.

The vehicle is staged and runs: spawned at (-12950,-900,120), 9 visual panels attached,
panel 0 visible with a 238 cm extent, settled at Z 119 cm. The capture shows an empty road
with a soft shadow. Two checks disagree in a useful way: visual_loop --verify PASSES the
frame (it only tests size, blankness and tonal range, so a well-exposed empty road passes),
while judge_screenshot returns verdict=no confidence=1.0.

Strongest clue, recorded in TODO.md: a downward trace from the vehicle finds no ground at
all (ground at Z -9999), so the car sits over a surface without collision or inside
geometry - the shadow and the panels are not in the same place.

Diagnostics added along the way: mesh/visibility/bounds at BeginPlay, per-panel world
positions and extents, and the ground trace. The visual panels were also unhidden from the
physics mesh: SetVisibility(false, ...) hid them whether or not propagation was requested.

Game/GigLine/Source/GigLine/GigLineVehicle.h

@@ -29,6 +29,18 @@ public:
 	virtual void BeginPlay() override;
 	virtual void Tick(float DeltaSeconds) override;
 
+	/**
+	 * Visual panels, as static mesh components.
+	 *
+	 * The skeletal vehicle asset imported with no usable geometry (runtime bounds of
+	 * 1 cm), so the car was invisible in the scene while its physics body still cast a
+	 * shadow - the "no vehicle in scene" report. The static assets are correct (body
+	 * 476 x 176 x 128 cm), so the visible car is assembled from them and the skeletal
+	 * mesh stays as the physics/animation driver only.
+	 */
+	UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = "Visual")
+	TArray<TObjectPtr<UStaticMeshComponent>> Panels;
+
 	/** True once the vehicle reports a forward speed above a walking pace. */
 	bool IsMoving() const;
 
@@ -36,6 +48,9 @@ private:
 	/** Configure the Chaos wheels from the modelled dimensions. */
 	void ConfigureWheels();
 
+	/** Attach the visible panels from the imported static systems. */
+	void BuildVisuals();
+
 	float DriveElapsed = 0.f;
 	bool bDriveReported = false;
 	FVector DriveStart = FVector::ZeroVector;