US05-05: Operate Uploads in the Browser (#75)

photo_pipeline/services/upload_batches.py

@@ -397,7 +397,7 @@ class UploadBatchService:
 
 
 def _batch_dict(row: UploadBatch, items: list[UploadItem]) -> dict:
-    return {
+    batch = {
         "id": row.id,
         "album": row.album,
         "folder": row.folder,
@@ -449,3 +449,8 @@ def _batch_dict(row: UploadBatch, items: list[UploadItem]) -> dict:
             for item in items
         ],
     }
+    # Why this batch may not be (re)started, from the one place that decides it
+    # (US05-04). Carried in the record so the browser can hide an action the server
+    # would refuse instead of re-implementing the policy (US05-05).
+    batch["retry_blockers"] = retry_blockers(batch)
+    return batch