feat: integrate SimpleCADAPI 2.0.2 CAD workflows

designir-pipeline/contracts/designir-3.0.schema.json

@@ -56,8 +56,41 @@
     },
     "surface_layer": {
       "type": "object",
-      "required": ["vertices", "solids", "free_shells", "surface_vocabulary", "curve_vocabulary"],
+      "oneOf": [
+        {
+          "required": [
+            "vertices",
+            "solids",
+            "free_shells",
+            "surface_vocabulary",
+            "curve_vocabulary"
+          ]
+        },
+        {
+          "required": [
+            "format",
+            "encoding",
+            "uncompressed_bytes",
+            "compressed_bytes",
+            "sha256",
+            "data"
+          ]
+        }
+      ],
       "properties": {
+        "format": {"const": "surfaceir-3.0"},
+        "encoding": {"const": "gzip+base64+json"},
+        "uncompressed_bytes": {"type": "integer", "minimum": 2},
+        "compressed_bytes": {"type": "integer", "minimum": 2},
+        "sha256": {
+          "type": "string",
+          "pattern": "^[a-f0-9]{64}$"
+        },
+        "data": {
+          "type": "string",
+          "minLength": 1,
+          "contentEncoding": "base64"
+        },
         "vertices": {
           "type": "array",
           "items": {
@@ -77,6 +110,7 @@
             "required": ["id", "shells"],
             "properties": {
               "id": {"type": "string"},
+              "orientation": {"type": "integer"},
               "shells": {
                 "type": "array",
                 "items": {
@@ -84,6 +118,7 @@
                   "required": ["id", "faces"],
                   "properties": {
                     "id": {"type": "string"},
+                    "orientation": {"type": "integer"},
                     "faces": {
                       "type": "array",
                       "items": {"$ref": "#/$defs/face"}
@@ -286,6 +321,8 @@
       "properties": {
         "id": {"type": "string"},
         "orientation": {"type": "integer"},
+        "area": {"type": "number", "minimum": 0},
+        "volume_contribution": {"type": "number"},
         "surface": {"type": "object"},
         "uv_bounds": {
           "type": "array",