P3-02 P5-02: integrate Bitbybit OCCT geometry runtime

tests/facade.test.ts

@@ -3,6 +3,8 @@ import assert from 'node:assert/strict'
 import { createMockFacade } from '../src/facade/mockFacade'
 import { PROJECT_SCHEMA_MIGRATIONS, PROJECT_SCHEMA_SQL, PROJECT_SCHEMA_VERSION } from '../src/facade/projectSchema'
 import { PersistenceWriteQueue, ProjectAutosaveScheduler } from '../src/facade/projectStore'
+import { assertShapeHandleIntegrity, normalizeBitbybitMesh, validateBoxInput } from '../src/facade/geometryRuntime'
+import type { ShapeHandle } from '../src/facade/types'
 
 test('facade exposes a stable initial document projection', () => {
   const facade = createMockFacade()
@@ -11,6 +13,36 @@ test('facade exposes a stable initial document projection', () => {
   assert.equal(state.document.id, 'doc-pump-housing')
   assert.equal(state.document.tree.find((item) => item.id === 'body')?.type, 'body')
   assert.equal(facade.gui.workbench.getActive(), 'Part Design')
+  assert.equal(facade.geometry.capabilities().provider, 'Bitbybit OCCT')
+})
+
+test('geometry boundary validates dimensions before invoking OCCT', () => {
+  assert.throws(() => validateBoxInput({ width: 0, length: 2, height: 3, documentVersion: 1 }), /width/)
+  assert.throws(() => validateBoxInput({ width: 1, length: 2, height: 3, center: [0, Number.NaN, 0], documentVersion: 1 }), /center/)
+  assert.doesNotThrow(() => validateBoxInput({ width: 1, length: 2, height: 3, documentVersion: 0 }))
+})
+
+test('geometry handles reject forged document ownership', () => {
+  const expected: ShapeHandle = { id: 'shape-one', kernel: 'bitbybit-occt', kind: 'solid', documentVersion: 4 }
+  assert.doesNotThrow(() => assertShapeHandleIntegrity({ ...expected }, expected))
+  assert.throws(() => assertShapeHandleIntegrity({ ...expected, documentVersion: 5 }, expected), /integrity/)
+  assert.throws(() => assertShapeHandleIntegrity({ ...expected, id: 'shape-two' }, expected), /integrity/)
+})
+
+test('Bitbybit face meshes are normalized into a facade-owned indexed asset', () => {
+  const shape: ShapeHandle = { id: 'shape-test', kernel: 'bitbybit-occt', kind: 'solid', documentVersion: 7 }
+  const mesh = normalizeBitbybitMesh(shape, {
+    faceList: [{ faceIndex: 1, vertexCoord: [0, 0, 0, 2, 0, 0, 0, 3, 0], normalCoord: [0, 0, 1, 0, 0, 1, 0, 0, 1], triIndexes: [0, 1, 2], numberOfTriangles: 1 }],
+    edgeList: [], pointsList: [],
+  } as never)
+  assert.deepEqual([...mesh.positions], [0, 0, 0, 2, 0, 0, 0, 3, 0])
+  assert.deepEqual([...mesh.indices], [0, 1, 2])
+  assert.deepEqual(mesh.bounds, { min: [0, 0, 0], max: [2, 3, 0] })
+  assert.equal(mesh.topologyVersion, 7)
+  assert.throws(() => normalizeBitbybitMesh(shape, {
+    faceList: [{ faceIndex: 2, vertexCoord: [0, 0, 0], normalCoord: [], triIndexes: [0, 1, 0], numberOfTriangles: 1 }],
+    edgeList: [], pointsList: [],
+  } as never), /out-of-range/)
 })
 
 test('project schema is versioned and covers the FreeCAD document graph', () => {