feat(commands): add app state dispatcher foundation

editor/initial-state.ts

@@ -0,0 +1,26 @@
+import type { AppState, EditorState } from "./state";
+
+export const initialEditorState: EditorState = {
+  viewport: {
+    center: { x: 0, y: 0 },
+    zoom: 1,
+    rotation: 0,
+    size: { w: 0, h: 0 },
+  },
+  selection: {
+    layerIds: [],
+  },
+};
+
+export function createInitialAppState(name = "Untitled"): AppState {
+  return {
+    document: {
+      id: crypto.randomUUID(),
+      name,
+      version: 1,
+      artboards: [],
+      assets: [],
+    },
+    editor: initialEditorState,
+  };
+}