test(review): ground-level cameras, and a null result that locates the float

Two cameras were added at pavement height - one on the feet, one on the wheels - because the
wide shots cannot settle whether anything touches the surface.

The feet shot settled it, and not the way I expected. Lowering the player start from 455 to 395
changed NOTHING in the capture: same framing, same float. The capsule falls onto the collider and
always rests at Z 456 with its feet at 369, while the rendered pavement is about a metre lower.

So the float is not a spawn-height problem, and no amount of tuning player_z will fix it: the
sidewalk's collision extends above its visible top, and the player stands on an invisible ledge.
The earlier 'top surface under player: Z 366' measurement was not wrong - it was measuring the
collider, which is the thing that is in the wrong place.

Next: measure the sidewalk mesh's rendered top against its collider and fix the asset, not the
spawn.

Also pulled the wheel camera back; it had been inside the bodywork.

Tools/ue_build_review_map.py

@@ -293,6 +293,11 @@ try:
             # view from the road so both the body and the wheels are visible: a side-on
             # or rear view hides the wheel stances that the build is judged on.
             ("demo-vehicle", unreal.Vector(-12560, -1560, 560), unreal.Vector(-12950, -900, 420), 45.0),
+            # Ground-level angles on the contact points. The wide shots cannot settle whether
+            # the feet and wheels touch the surface - that question needs the camera near the
+            # ground, looking along it, where a gap is a visible sliver of surface.
+            ("demo-feet", unreal.Vector(-13140, -980, 400), unreal.Vector(-13336, -1150, 372), 40.0),
+            ("demo-wheel", unreal.Vector(-12380, -580, 430), unreal.Vector(-12950, -900, 360), 55.0),
             ("demo-spawn-view", unreal.Vector(-13336, -3100, 620), unreal.Vector(-13336, 1300, 620), 48.0),
             # Street level, from the north sidewalk: the old camera sat at Y -400,
             # inside the facade body (which spans Y -1457..-200), so it looked at

Tools/visual_targets.json

@@ -108,6 +108,26 @@
         "Art/blender/vehicle/hatch-reference.png"
       ],
       "expect": "A red compact hatchback car parked on a pavement beside a person, with dark windows, four dark wheels and a dark bumper, daytime"
+    },
+    {
+      "name": "demo-feet",
+      "shot": "Screenshots/demo/review-demo-feet.png",
+      "size": [
+        1920,
+        1080
+      ],
+      "references": [],
+      "expect": "Low view of a person's feet standing on a pavement, seen along the ground, daylight. The object must touch the surface: feet or wheels in contact, with the shadow starting at that contact point, not on the ground far below."
+    },
+    {
+      "name": "demo-wheel",
+      "shot": "Screenshots/demo/review-demo-wheel.png",
+      "size": [
+        1920,
+        1080
+      ],
+      "references": [],
+      "expect": "Low view of a car's wheels standing on a pavement, seen along the ground, daylight. The object must touch the surface: feet or wheels in contact, with the shadow starting at that contact point, not on the ground far below."
     }
   ]
 }