feat: save games and edit scene darkness

Persist show state to local saves; author map darkness in scene editor with bake-to-scene and help updates.

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

app/main/project/zipStore.ts

@@ -52,6 +52,7 @@ import type {
   SceneTrap,
 } from '../../shared/types';
 import { normalizeSceneAudioRef, PROJECT_SCHEMA_VERSION } from '../../shared/types';
+import { normalizeSceneDarknessStrokes } from '../../shared/types/sceneDarkness';
 import { normalizeMaterialLegend } from '../../shared/types/materialLegend';
 import { normalizeSceneToken, type SceneToken } from '../../shared/types/appTokens';
 import {
@@ -772,6 +773,7 @@ export class ZipProjectStore {
           previewVideoAutostart: false,
           previewRotationDeg: 0,
           darkenScene: false,
+          darknessStrokes: [],
           traps: [],
           tokens: [],
           npcTokens: [],
@@ -798,6 +800,9 @@ export class ZipProjectStore {
           ? { previewRotationDeg: patch.previewRotationDeg }
           : null),
         ...(patch.darkenScene !== undefined ? { darkenScene: patch.darkenScene } : null),
+        ...(patch.darknessStrokes !== undefined
+          ? { darknessStrokes: normalizeSceneDarknessStrokes(patch.darknessStrokes) }
+          : null),
         ...(patch.traps !== undefined
           ? {
               traps: patch.traps.map((t) => normalizeSceneTrap(t)).filter((t): t is SceneTrap => Boolean(t)),
@@ -2619,6 +2624,9 @@ function normalizeScene(s: Scene): Scene {
   const previewThumbAssetId =
     (s as unknown as { previewThumbAssetId?: AssetId | null }).previewThumbAssetId ?? null;
   const darkenScene = Boolean((s as unknown as { darkenScene?: boolean }).darkenScene);
+  const darknessStrokes = normalizeSceneDarknessStrokes(
+    (s as unknown as { darknessStrokes?: unknown }).darknessStrokes,
+  );
   const rawTraps = (s as unknown as { traps?: unknown[] }).traps;
   const traps = (Array.isArray(rawTraps) ? rawTraps : [])
     .map((t) => normalizeSceneTrap(t))
@@ -2666,6 +2674,7 @@ function normalizeScene(s: Scene): Scene {
     previewVideoAutostart,
     previewRotationDeg,
     darkenScene,
+    darknessStrokes,
     traps,
     tokens,
     npcTokens,