Start document model tests

tools/pano_cli/main.cpp

@@ -1,4 +1,5 @@
 #include "assets/image_format.h"
+#include "document/document.h"
 #include "foundation/parse.h"
 #include "foundation/result.h"
 
@@ -83,10 +84,22 @@ int create_document(int argc, char** argv)
         return 2;
     }
 
+    const auto document = pp::document::CanvasDocument::create(
+        pp::document::DocumentConfig {
+            .width = args.width,
+            .height = args.height,
+            .layer_count = args.layers,
+        });
+    if (!document) {
+        print_error("create-document", document.status().message);
+        return 2;
+    }
+
     std::cout << "{\"ok\":true,\"command\":\"create-document\",\"document\":{"
-              << "\"width\":" << args.width
-              << ",\"height\":" << args.height
-              << ",\"layers\":" << args.layers
+              << "\"width\":" << document.value().width()
+              << ",\"height\":" << document.value().height()
+              << ",\"layers\":" << document.value().layers().size()
+              << ",\"activeLayer\":" << document.value().active_layer_index()
               << "}}\n";
     return 0;
 }