use real sounds from kbsim

frontend/src/lib/project.ts

@@ -1,9 +1,30 @@
-import type { Project } from './types';
+import type { LegacySwitchType, Marker, Project, SwitchType } from './types';
 import { app, setActiveSwitch, setMarkers, setSelectedIds } from './store.svelte';
 
+const LEGACY_SWITCH_MAP: Record<LegacySwitchType, SwitchType> = {
+  'cherry-mx-blue': 'mxblue',
+  'cherry-mx-red': 'mxblack',
+  'cherry-mx-brown': 'mxbrown',
+};
+
+function migrateSwitch(value: string): SwitchType {
+  if (value in LEGACY_SWITCH_MAP) {
+    return LEGACY_SWITCH_MAP[value as LegacySwitchType];
+  }
+  return value as SwitchType;
+}
+
+function migrateMarker(marker: Marker): Marker {
+  return {
+    ...marker,
+    code: marker.code,
+    releaseTime: marker.releaseTime,
+  };
+}
+
 export function buildProject(): Project {
   return {
-    version: 1,
+    version: 2,
     switch: app.activeSwitch,
     markers: app.markers.map((m) => ({ ...m })),
   };
@@ -20,12 +41,12 @@ export function downloadProject(filename = 'project.json') {
   URL.revokeObjectURL(url);
 }
 
-export function loadProject(data: Project) {
-  if (data.version !== 1) {
+export function loadProject(data: Project & { version?: number; switch?: string }) {
+  if (data.version !== 1 && data.version !== 2) {
     throw new Error(`Unsupported project version: ${data.version}`);
   }
-  setMarkers(data.markers.map((m) => ({ ...m })));
-  setActiveSwitch(data.switch);
+  setMarkers((data.markers ?? []).map(migrateMarker));
+  setActiveSwitch(migrateSwitch(data.switch ?? 'mxbrown'));
   setSelectedIds(new Set());
 }