port 2V2-d.2: Granny runtime on libgr2, main character model animates

Implement the Granny SDK 2.11 API the client uses on top of libgr2
(platform/EterGrnLib/GrannyRuntime.cpp, shim granny.h declared from the
SDK header): file sections, type-definition vertex conversion, material
textures by Usage, mesh/bone bindings, deformer, control clock/loop/ease
and weighted SRT sampling. Port EterGrnLib (LODController, Material, Mesh,
Model, ModelInstance*, Motion, Thing, ThingInstance, Util) plus EterLib
GrpObjectInstance/GrpCollisionObject/CollisionData verbatim and drop their
platform skeletons and pending stand-ins; register the gr2 resource
factory; vertex/index buffers are CPU-side until the 2V2-e render adapter.

app.UpdateGame/RenderGame now run 40250's bodies, reaching the
CPythonApplication members through their singletons (the platform has no
app object); CPythonGraphic joins GameSingletons in member order, and
GetMousePosition reads the host cursor.

port.login_flow asserts the main instance's PART_MAIN model has meshes,
its diffuse image loaded and the WAIT motion moves the bones between
frames; offline and live pass, port_gate macos PASS.

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

audit/port-map/EterLib/GrpCollisionObject.cpp.json

@@ -0,0 +1,62 @@
+{
+  "reference": "EterLib/GrpCollisionObject.cpp",
+  "reference_sha256": "911a796b466fe60910def8d88631b5db5dacbf7709871ae955f8ac3e056fe31b",
+  "priority": "P4",
+  "contracts": [],
+  "functions": {
+    "CGraphicCollisionObject::IntersectBoundBox": {
+      "status": "PORTED",
+      "impl": [
+        "extension/src/port/EterLib/GrpCollisionObject.cpp:CGraphicCollisionObject::IntersectBoundBox"
+      ]
+    },
+    "CGraphicCollisionObject::IntersectCube": {
+      "status": "PORTED",
+      "impl": [
+        "extension/src/port/EterLib/GrpCollisionObject.cpp:CGraphicCollisionObject::IntersectCube"
+      ]
+    },
+    "CGraphicCollisionObject::IntersectIndexedMesh": {
+      "status": "PORTED",
+      "impl": [
+        "extension/src/port/EterLib/GrpCollisionObject.cpp:CGraphicCollisionObject::IntersectIndexedMesh"
+      ]
+    },
+    "CGraphicCollisionObject::IntersectMesh": {
+      "status": "PORTED",
+      "impl": [
+        "extension/src/port/EterLib/GrpCollisionObject.cpp:CGraphicCollisionObject::IntersectMesh"
+      ]
+    },
+    "CGraphicCollisionObject::IntersectTriangle": {
+      "status": "PORTED",
+      "impl": [
+        "extension/src/port/EterLib/GrpCollisionObject.cpp:CGraphicCollisionObject::IntersectTriangle"
+      ]
+    },
+    "CGraphicCollisionObject::IntersectSphere": {
+      "status": "PORTED",
+      "impl": [
+        "extension/src/port/EterLib/GrpCollisionObject.cpp:CGraphicCollisionObject::IntersectSphere"
+      ]
+    },
+    "CGraphicCollisionObject::IntersectCylinder": {
+      "status": "PORTED",
+      "impl": [
+        "extension/src/port/EterLib/GrpCollisionObject.cpp:CGraphicCollisionObject::IntersectCylinder"
+      ]
+    },
+    "CGraphicCollisionObject::CGraphicCollisionObject": {
+      "status": "PORTED",
+      "impl": [
+        "extension/src/port/EterLib/GrpCollisionObject.cpp:CGraphicCollisionObject::CGraphicCollisionObject"
+      ]
+    },
+    "CGraphicCollisionObject::~CGraphicCollisionObject": {
+      "status": "PORTED",
+      "impl": [
+        "extension/src/port/EterLib/GrpCollisionObject.cpp:CGraphicCollisionObject::~CGraphicCollisionObject"
+      ]
+    }
+  }
+}