fix: 加固 Outbox 租约与 Worker 生命周期

prisma/schema.prisma

@@ -428,7 +428,7 @@ model Notification {
 }
 
 model OutboxEvent {
-  /// Processing lease index outbox_events_processing_lease_idx is managed in 0005 SQL.
+  /// Processing lease index outbox_events_processing_lease_idx is managed in 0007 SQL.
   id            String       @id @default(uuid()) @db.Uuid
   aggregateType String       @map("aggregate_type") @db.VarChar(100)
   aggregateId   String       @map("aggregate_id") @db.Uuid
@@ -439,12 +439,13 @@ model OutboxEvent {
   attempts      Int          @default(0)
   nextRetryAt   DateTime     @default(now()) @map("next_retry_at") @db.Timestamptz(3)
   lockedAt      DateTime?    @map("locked_at") @db.Timestamptz(3)
+  lockToken     String?      @map("lock_token") @db.Uuid
   publishedAt   DateTime?    @map("published_at") @db.Timestamptz(3)
   createdAt     DateTime     @default(now()) @map("created_at") @db.Timestamptz(3)
   updatedAt     DateTime     @updatedAt @map("updated_at") @db.Timestamptz(3)
 
   @@index([status, nextRetryAt])
-  @@index([status, lockedAt], map: "outbox_events_processing_lease_idx")
+  @@index([status, lockedAt, lockToken], map: "outbox_events_processing_lease_idx")
   @@index([aggregateType, aggregateId])
   @@map("outbox_events")
 }