feat(worker): watermark versioning with atomic history regeneration

Co-Authored-By: Claude Code <noreply@anthropic.com>

services/api/src/sync-inbox/sync-inbox.service.ts

@@ -221,6 +221,13 @@ export class SyncInboxService {
       const categorySnapshot = Array.isArray(p.categories)
         ? (p.categories as unknown as Prisma.InputJsonValue)
         : undefined;
+      // P4a Task 3 水印副本位：旧事件/手写载荷可能缺字段——防御性归一（缺省=
+      // 关闭/0），语义上「缺水印位」与「水印关闭」同形。
+      const watermarkEnabled = p.watermarkEnabled === true;
+      const watermarkConfigVersion =
+        typeof p.watermarkConfigVersion === 'number' && p.watermarkConfigVersion > 0
+          ? Math.floor(p.watermarkConfigVersion)
+          : 0;
       await tx.albums_ov.upsert({
         where: { albumId: event.entityId },
         create: {
@@ -230,6 +237,8 @@ export class SyncInboxService {
           publicEnabled: p.publicEnabled,
           downloadEnabled: p.downloadEnabled,
           originalDownloadEnabled: p.originalDownloadEnabled,
+          watermarkEnabled,
+          watermarkConfigVersion,
           translations: p.translations as unknown as Prisma.InputJsonValue,
           categories: categorySnapshot ?? [],
           defaultLocale: p.defaultLocale,
@@ -244,6 +253,8 @@ export class SyncInboxService {
           publicEnabled: p.publicEnabled,
           downloadEnabled: p.downloadEnabled,
           originalDownloadEnabled: p.originalDownloadEnabled,
+          watermarkEnabled,
+          watermarkConfigVersion,
           translations: p.translations as unknown as Prisma.InputJsonValue,
           ...(categorySnapshot !== undefined
             ? { categories: categorySnapshot }