fix: persist product archive cover and provenance

backend/service/schemas.py

@@ -47,6 +47,7 @@ class ProductRecord(BaseModel):
     created_at: datetime
     updated_at: datetime
     purge_after: datetime | None = None
+    cover_image_id: str | None = None
 
 
 class ProductVersionRecord(BaseModel):
@@ -63,6 +64,7 @@ class ProductImageRecord(BaseModel):
     version_id: str
     image_path: str = ""
     image_type: str = ""
+    is_cover: bool = False
     created_at: datetime
 
 
@@ -71,11 +73,13 @@ class ProductWordcloudArchiveRecord(BaseModel):
     product_id: str
     version_id: str
     archive_path: str = ""
+    source_job_id: str = ""
+    source_asset_id: str = ""
+    db_checksum: str = ""
     created_at: datetime
 
 
 class ProductWordcloudArchiveResponse(ProductWordcloudArchiveRecord):
-    source_job_id: str
     db_path: str