refactor(commands): centralize command ids

input/viewport.ts

@@ -1,4 +1,5 @@
 import type { Dispatch } from "@commands/dispatcher";
+import { commandIds } from "@commands/ids";
 import type { GlobalPointerConsumer, GlobalWheelConsumer, PointerInputEvent, WheelInputEvent } from "./pointer";
 
 export type ViewportPointerPanHandler = {
@@ -37,7 +38,7 @@ export function createViewportPointerPanHandler(options: {
       };
 
       lastPosition = event.position;
-      options.dispatch("viewport.pan", {
+      options.dispatch(commandIds.viewportPan, {
         delta: {
           x: -screenDelta.x / zoom,
           y: -screenDelta.y / zoom,
@@ -69,7 +70,7 @@ export function handleViewportWheel(options: {
   if (options.globalConsumer(options.event)) return true;
 
   const zoomFactor = Math.exp(-options.event.delta.y * 0.001);
-  options.dispatch("viewport.zoomAroundPoint", {
+  options.dispatch(commandIds.viewportZoomAroundPoint, {
     zoom: options.currentZoom * zoomFactor,
     point: options.event.position,
   });