Customer Rating and review changes

backend/app/electronics/models.py

@@ -34,6 +34,8 @@ class Listing:
     pincode_applied: bool = False
     rating: Optional[Decimal] = None
     review_count: Optional[int] = None
+    # {"5": n, ..., "1": n} when the source publishes a star breakdown.
+    rating_breakdown: Optional[Dict[str, int]] = None
     # Customer reviews the page itself publishes (schema.org Review); stored
     # in elec.listing_review, not on the listing row.
     reviews: List[Dict[str, Any]] = field(default_factory=list)