feat(traps): activation VFX/SFX, explosion effect, and help section

Wire mimic/pit/arrow/laser media on activate, poison/explosion via effects, and document the scene editor and traps in Instructions.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/renderer/editor/state/projectState.ts

@@ -60,7 +60,7 @@ type Actions = {
   setMaterialRotation: (materialId: MaterialId, rotationDeg: 0 | 90 | 180 | 270) => Promise<void>;
   setMaterialLegend: (
     materialId: MaterialId,
-    legend: import('../../shared/types').MaterialLegend | null,
+    legend: import('../../../shared/types').MaterialLegend | null,
   ) => Promise<void>;
   pickMaterialImage: () => Promise<{ filePath: string; previewDataUrl: string } | null>;
   updateScene: (
@@ -286,7 +286,8 @@ export function useProjectState(licenseActive: boolean, opts?: ProjectStateOpts)
       invalidateAssetUrlCache();
 
       const job = (async () => {
-        setState((s) => ({ ...s, openingProjectId: id }));
+        // При открытии не выбираем сцену: список/граф/инспектор без выделения.
+        setState((s) => ({ ...s, openingProjectId: id, selectedSceneId: null }));
         try {
           const res = await api.invoke(ipcChannels.project.open, { projectId: id });
           if (projectDataEpochRef.current !== epoch) {
@@ -296,7 +297,7 @@ export function useProjectState(licenseActive: boolean, opts?: ProjectStateOpts)
           setState((s) => ({
             ...s,
             project: res.project,
-            selectedSceneId: res.project.currentSceneId,
+            selectedSceneId: null,
             openingProjectId: null,
           }));
         } catch {
@@ -538,7 +539,7 @@ export function useProjectState(licenseActive: boolean, opts?: ProjectStateOpts)
 
     const setMaterialLegend = async (
       materialId: MaterialId,
-      legend: import('../../shared/types').MaterialLegend | null,
+      legend: import('../../../shared/types').MaterialLegend | null,
     ) => {
       const res = await api.invoke(ipcChannels.project.setMaterialLegend, { materialId, legend });
       // Список проектов не меняется — не дергаем refreshProjects на каждое обновление легенды.
@@ -562,7 +563,7 @@ export function useProjectState(licenseActive: boolean, opts?: ProjectStateOpts)
         previewVideoAutostart?: boolean;
         previewRotationDeg?: 0 | 90 | 180 | 270;
         darkenScene?: boolean;
-        traps?: import('../../shared/types').SceneTrap[];
+        traps?: import('../../../shared/types').SceneTrap[];
         settings?: Partial<Scene['settings']>;
         media?: Partial<Scene['media']>;
         layout?: { x: number; y: number };
@@ -969,7 +970,8 @@ export function useProjectState(licenseActive: boolean, opts?: ProjectStateOpts)
         setState((s) => ({
           ...s,
           project: res.project,
-          selectedSceneId: res.project?.currentSceneId ?? null,
+          // Восстановление открытого проекта — без автовыбора сцены в редакторе.
+          selectedSceneId: null,
         }));
       } catch {
         if (projectDataEpochRef.current !== epoch) return;