Kernel rig: bounding solid cases, two boxes with a margin and a sphere's exact box

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/kernel-cases/solids/cov-bounding-solid-of-a-sphere/expected.json

@@ -0,0 +1,21 @@
+{
+ "sources": [],
+ "what": "the bounding box of a sphere r10 at (5,5,5): a curved body's exact extremes, not its mesh's",
+ "source": "analytic",
+ "method": "the sphere spans 5 +- 10 on each axis: the box (-5,-5,-5)-(15,15,15) = 20^3 = 8000; with the sphere kept: V = 8000 + 4/3 pi 1000; faces 6 + 1",
+ "body_count": 2,
+ "faces": 7,
+ "volume_mm3": 12188.79020478639,
+ "bbox": {
+  "min": [
+   -5,
+   -5,
+   -5
+  ],
+  "max": [
+   15,
+   15,
+   15
+  ]
+ }
+}

tests/kernel-cases/solids/cov-bounding-solid-of-a-sphere/recipe.json

@@ -0,0 +1,25 @@
+{
+ "commands": [
+  {
+   "command": "solid.sphere",
+   "params": {
+    "radius": 10,
+    "center": [
+     5,
+     5,
+     5
+    ],
+    "body_name": "Ball"
+   }
+  },
+  {
+   "command": "solid.bounding_solid",
+   "params": {
+    "bodies": [
+     "Ball"
+    ],
+    "body_name": "Bound"
+   }
+  }
+ ]
+}

tests/kernel-cases/solids/cov-bounding-solid-two-boxes-with-margin/expected.json

@@ -0,0 +1,20 @@
+{
+ "sources": [],
+ "what": "the bounding box of two boxes (0..10 cube, 20..25 x 0..5 x 0..5) with a 2 mm margin",
+ "source": "analytic",
+ "method": "the boxes span (0,0,0)-(25,10,10); with 2 mm: (-2,-2,-2)-(27,12,12) = 29x14x14 = 5684; with both boxes kept: V = 1000 + 125 + 5684",
+ "body_count": 3,
+ "volume_mm3": 6809,
+ "bbox": {
+  "min": [
+   -2,
+   -2,
+   -2
+  ],
+  "max": [
+   27,
+   12,
+   12
+  ]
+ }
+}

tests/kernel-cases/solids/cov-bounding-solid-two-boxes-with-margin/recipe.json

@@ -0,0 +1,34 @@
+{
+ "commands": [
+  {
+   "command": "solid.box",
+   "params": {
+    "length": 10,
+    "width": 10,
+    "height": 10,
+    "body_name": "A"
+   }
+  },
+  {
+   "command": "solid.box",
+   "params": {
+    "length": 5,
+    "width": 5,
+    "height": 5,
+    "corner": [
+     20,
+     0,
+     0
+    ],
+    "body_name": "B"
+   }
+  },
+  {
+   "command": "solid.bounding_solid",
+   "params": {
+    "margin": 2,
+    "body_name": "Bound"
+   }
+  }
+ ]
+}