Add shared-scene 2D authoring, sprite animation and Rapier2D physics

docs/MCP_TOOLS.json

@@ -277,6 +277,13 @@
           },
           "id": {
             "type": "string"
+          },
+          "mode": {
+            "type": "string",
+            "enum": [
+              "2d",
+              "3d"
+            ]
           }
         },
         "required": [
@@ -699,6 +706,53 @@
         "taskSupport": "forbidden"
       }
     },
+    {
+      "name": "asset_import_image",
+      "description": "Import PNG, JPEG or WebP as an image asset and optional XY sprite. Configure asset.image with asset.upsert for slicing, PPU, filter and pivots.",
+      "inputSchema": {
+        "type": "object",
+        "properties": {
+          "expectedRevision": {
+            "type": "integer",
+            "minimum": 0,
+            "maximum": 9007199254740991
+          },
+          "requestId": {
+            "type": "string",
+            "maxLength": 100
+          },
+          "name": {
+            "type": "string",
+            "pattern": "\\.(png|jpe?g|webp)$"
+          },
+          "base64": {
+            "type": "string",
+            "maxLength": 36000000
+          },
+          "path": {
+            "type": "string"
+          },
+          "instantiate": {
+            "default": true,
+            "type": "boolean"
+          }
+        },
+        "required": [
+          "expectedRevision",
+          "name"
+        ],
+        "$schema": "http://json-schema.org/draft-07/schema#"
+      },
+      "annotations": {
+        "readOnlyHint": false,
+        "destructiveHint": true,
+        "idempotentHint": false,
+        "openWorldHint": false
+      },
+      "execution": {
+        "taskSupport": "forbidden"
+      }
+    },
     {
       "name": "asset_import_glb",
       "description": "Import GLB, glTF with companion files, or a ZIP containing one model and its textures. Use base64 bytes OR a path inside the project folder. External files resolve only within that folder; network URLs are not fetched.",
@@ -1069,6 +1123,12 @@
             "minimum": -1,
             "maximum": 1
           },
+          "y": {
+            "description": "Vertical XY input for 2D",
+            "type": "number",
+            "minimum": -1,
+            "maximum": 1
+          },
           "z": {
             "default": 0,
             "type": "number",