feat(web): switch to implementation-first capability wave

web/app/src/workers/web-engine.worker.ts

@@ -11,6 +11,7 @@ import { normalizeProjectAssetPath } from "../../../protocol/asset-path";
 import { cloneMeshGeometryBuffers, diffMeshGeometryBuffers } from "../../../protocol/mesh-geometry-delta";
 import { gateSculptCapability, parseSculptMeshAttributes, parseSculptStroke } from "../../../protocol/sculpt";
 import { gateGeometryNodeGraph } from "../../../protocol/geometry-nodes";
+import { parsePhysicsSimulationManifest } from "../../../protocol/physics-simulation";
 import { gateShaderGraph } from "../../../protocol/shader-graph";
 import { compileShaderGraph, type ShaderCompileReport } from "../../../protocol/shader-compiler";
 import { gateNlaTracks, moveNlaStrip } from "../../../protocol/nla";
@@ -566,7 +567,17 @@ function assertFutureCapability(payload: Extract<WebEngineRequest["command"], {
       const ownerObjectId = snapshot?.nodes.find((node) => node.dataId === payload.meshId)?.id;
       const gate = gateGeometryNodeGraph(payload.graph, { availableResourceIds, blockedResourceIds, ownerObjectId });
       if (gate.status === "BLOCKED") rejectCapabilityGate(gate);
-      throw report("CAPABILITY_MISSING", "N-012 Geometry Nodes evaluator is not enabled in the WebEngine Main writer");
+      return;
+    }
+    case "setPhysicsSimulation": {
+      try {
+        parsePhysicsSimulationManifest(payload.manifest);
+        return;
+      }
+      catch (error) {
+        reportProtocolError(error, "PHYSICS_MANIFEST_INVALID");
+      }
+      return;
     }
     case "setShaderGraph": {
       const gate = gateShaderGraph(payload.graph, {