feat(scene): keep map tokens with preview rotation

When previewRotationDeg changes, remap non-player, NPC and trap
markers (plus live session token overrides) so they stay on the art.

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

app/main/project/zipStore.ts

@@ -67,6 +67,12 @@ import {
   type NpcDisposition,
 } from '../../shared/types/npcDisposition';
 import { DEFAULT_SCENE_GRID, normalizeSceneGrid } from '../../shared/types/sceneGrid';
+import {
+  asPreviewRotationDeg,
+  previewRotationStepsCw,
+  rotateMapMarkersByCwSteps,
+  rotateSceneTokensByCwSteps,
+} from '../../shared/types/scenePreviewRotation';
 import { normalizeSceneTrap } from '../../shared/types/sceneTraps';
 import type {
   AssetId,
@@ -787,6 +793,24 @@ export class ZipProjectStore {
       ...(patch.layout ? { layout: { ...base.layout, ...patch.layout } } : null),
     };
 
+    // Keep map markers glued to the art when previewRotationDeg changes (image/video).
+    if (patch.previewRotationDeg !== undefined) {
+      const fromRot = asPreviewRotationDeg(base.previewRotationDeg);
+      const toRot = asPreviewRotationDeg(patch.previewRotationDeg);
+      const steps = previewRotationStepsCw(fromRot, toRot);
+      if (steps !== 0) {
+        if (patch.tokens === undefined) {
+          next.tokens = rotateSceneTokensByCwSteps(base.tokens ?? [], steps);
+        }
+        if (patch.npcTokens === undefined) {
+          next.npcTokens = rotateMapMarkersByCwSteps(base.npcTokens ?? [], steps);
+        }
+        if (patch.traps === undefined) {
+          next.traps = rotateMapMarkersByCwSteps(base.traps ?? [], steps);
+        }
+      }
+    }
+
     await this.updateProject((p) => {
       const scenes = { ...p.scenes, [sceneId]: next };
       const sceneListOrder =