Rebuild local Blender WASM environment and recovery evidence

tools/web/check-wbv2-p4-002-desktop.py

@@ -0,0 +1,83 @@
+#!/usr/bin/env python3
+import hashlib
+import json
+import pathlib
+import sys
+
+import bpy
+
+
+def graph_record(group):
+    sockets = [
+        {"name": item.name, "inOut": item.in_out, "socketType": item.socket_type}
+        for item in group.interface.items_tree
+        if item.item_type == "SOCKET"
+    ]
+    return {
+        "name": group.name,
+        "type": group.bl_idname,
+        "interface": sockets,
+        "nodeTypes": sorted(node.bl_idname for node in group.nodes),
+        "nodeNames": sorted(node.name for node in group.nodes),
+        "linkCount": len(group.links),
+    }
+
+
+def material_record(material):
+    tree = material.node_tree
+    return {
+        "name": material.name,
+        "nodeTypes": sorted(node.bl_idname for node in tree.nodes),
+        "nodeNames": sorted(node.name for node in tree.nodes),
+        "linkCount": len(tree.links),
+    }
+
+
+def state():
+    supported = bpy.data.node_groups.get("WBV2P4002SupportedGraph")
+    blocked = bpy.data.node_groups.get("WBV2P4002BlockedGraph")
+    shader = bpy.data.materials.get("WBV2P4002ShaderMaterial")
+    if supported is None or blocked is None or shader is None:
+        raise RuntimeError("P4-002 fixture data blocks are missing")
+    if not any(modifier.type == "NODES" and modifier.node_group == supported for obj in bpy.data.objects for modifier in obj.modifiers):
+        raise RuntimeError("supported Geometry Nodes modifier is missing")
+    if not any(modifier.type == "NODES" and modifier.node_group == blocked for obj in bpy.data.objects for modifier in obj.modifiers):
+        raise RuntimeError("blocked Geometry Nodes modifier is missing")
+    return {
+        "graphs": [graph_record(supported), graph_record(blocked)],
+        "material": material_record(shader),
+    }
+
+
+def main():
+    arguments = sys.argv[sys.argv.index("--") + 1:]
+    if len(arguments) != 2:
+        raise SystemExit("usage: blender -b --factory-startup --python check-wbv2-p4-002-desktop.py -- FIXTURE REPORT")
+    fixture, report_path = (pathlib.Path(value).resolve() for value in arguments)
+    bpy.ops.wm.open_mainfile(filepath=str(fixture), load_ui=False)
+    before = state()
+    temporary = fixture.with_name(f"{fixture.stem}-reopen.blend")
+    try:
+        bpy.ops.wm.save_as_mainfile(filepath=str(temporary), check_existing=False, compress=True)
+        bpy.ops.wm.open_mainfile(filepath=str(temporary), load_ui=False)
+        after = state()
+    finally:
+        temporary.unlink(missing_ok=True)
+    if before != after:
+        raise RuntimeError(f"node graph save/reopen drift: {before} != {after}")
+    report = {
+        "schemaVersion": 1,
+        "task": "WBV2-P4-002",
+        "operation": "NODES_ALLOWLIST_DESKTOP",
+        "fixtureSha256": hashlib.sha256(fixture.read_bytes()).hexdigest(),
+        "state": after,
+        "saveReopen": "EXACT",
+        "blenderVersion": bpy.app.version_string,
+    }
+    report_path.parent.mkdir(parents=True, exist_ok=True)
+    report_path.write_text(json.dumps(report, indent=2, sort_keys=True) + "\n", encoding="utf-8")
+    print("wbv2-p4-002-desktop-ok graphs=2 supported=GeometryNodeTransform blocked=GeometryNodeDistributePointsOnFaces shader=ShaderNodeRGB saveReopen=exact")
+
+
+if __name__ == "__main__":
+    main()