feat: multi-material overlays, presentation guides, and release prebuilds

Align control/presentation with presentation screen rect and darkness z-order; sync window titles and session window cleanup. Pack Win/Mac/Linux with npmRebuild disabled and release-native-prep for classic-level and sharp.

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

app/shared/types/materials.ts

@@ -14,13 +14,14 @@ export type MaterialsOverlayLayout = {
 
 export type MaterialsZoomTool = 'zoomIn' | 'zoomOut' | null;
 
-/** Session-only: какой материал сейчас показан поверх сцены. */
+/** Session-only: какие материалы сейчас показаны поверх сцены. */
 export type MaterialsOverlayState = {
   revision: number;
-  activeMaterialId: MaterialId | null;
-  layout: MaterialsOverlayLayout;
-  /** Раскладка блока описаний легенды (если материал с легендой). */
-  legendLayout: MaterialsOverlayLayout;
+  activeMaterialIds: MaterialId[];
+  layouts: Record<string, MaterialsOverlayLayout>;
+  /** Раскладка блока описаний легенды по materialId. */
+  legendLayouts: Record<string, MaterialsOverlayLayout>;
+  focusMaterialId: MaterialId | null;
   zoomTool: MaterialsZoomTool;
 };
 
@@ -35,10 +36,10 @@ export type MaterialsOverlayEvent =
   | { kind: 'show'; materialId: MaterialId; rotationDeg?: number }
   | { kind: 'hide' }
   | { kind: 'toggle'; materialId: MaterialId; rotationDeg?: number }
-  | { kind: 'layout.set'; layout: MaterialsOverlayLayout }
-  | { kind: 'legendLayout.set'; layout: MaterialsOverlayLayout }
+  | { kind: 'layout.set'; materialId: MaterialId; layout: MaterialsOverlayLayout }
+  | { kind: 'legendLayout.set'; materialId: MaterialId; layout: MaterialsOverlayLayout }
   | { kind: 'zoomTool.set'; tool: MaterialsZoomTool }
-  | { kind: 'zoomAt'; nx: number; ny: number };
+  | { kind: 'zoomAt'; nx: number; ny: number; materialId?: MaterialId };
 
 /** Нормализация угла в диапазон [0, 360). */
 export function normalizeMaterialsRotation(deg: number): number {
@@ -73,3 +74,17 @@ export function zoomMaterialsLayoutAt(
     scale: clamped.scale,
   });
 }
+
+function initialLegendLayout(): MaterialsOverlayLayout {
+  return clampMaterialsLayout({
+    ...DEFAULT_MATERIALS_OVERLAY_LAYOUT,
+    cx: 0.82,
+    cy: 0.5,
+    scale: 0.85,
+    rotationDeg: 0,
+  });
+}
+
+export function defaultLegendLayoutForMaterial(): MaterialsOverlayLayout {
+  return initialLegendLayout();
+}