fix: game audio persistence and editor perf

- Keep game/campaign audio assets referenced (no prune)
- Flush pending project save on quit/switch/export to avoid losing campaignAudios
- Control: prevent game music restarts on scene changes; allow always-on controls; handle autoplay-after-scene-audio
- Editor: reduce ReactFlow churn with stable scene card map; lazy/async image decode
- Add contract/unit tests and update test script

Made-with: Cursor

app/renderer/editor/state/projectState.ts

@@ -19,6 +19,8 @@ type Actions = {
   closeProject: () => Promise<void>;
   createScene: () => Promise<void>;
   selectScene: (id: SceneId) => Promise<void>;
+  importCampaignAudio: () => Promise<void>;
+  updateCampaignAudios: (next: Project['campaignAudios']) => Promise<void>;
   updateScene: (
     sceneId: SceneId,
     patch: {
@@ -129,6 +131,22 @@ export function useProjectState(licenseActive: boolean): readonly [State, Action
       await api.invoke(ipcChannels.project.setCurrentScene, { sceneId: id });
     };
 
+    const importCampaignAudio = async () => {
+      const res = await api.invoke(ipcChannels.project.importCampaignAudio, {});
+      if (res.canceled) return;
+      if (res.imported.length === 0) {
+        window.alert('Аудио не добавлено. Проверьте формат файла.');
+      }
+      setState((s) => ({ ...s, project: res.project }));
+      await refreshProjects();
+    };
+
+    const updateCampaignAudios = async (next: Project['campaignAudios']) => {
+      const res = await api.invoke(ipcChannels.project.updateCampaignAudios, { audios: next });
+      setState((s) => ({ ...s, project: res.project }));
+      await refreshProjects();
+    };
+
     const updateScene = async (
       sceneId: SceneId,
       patch: {
@@ -299,6 +317,8 @@ export function useProjectState(licenseActive: boolean): readonly [State, Action
       closeProject,
       createScene,
       selectScene,
+      importCampaignAudio,
+      updateCampaignAudios,
       updateScene,
       updateConnections,
       importMediaToScene,