fix: Use correct column names in visibility-events query

Changed name -> name_raw and brand -> brand_name_raw to match
store_products table schema.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/src/services/visibility-events.ts

@@ -110,8 +110,8 @@ export async function detectVisibilityEvents(
     `
     SELECT
       provider_product_id as id,
-      name,
-      brand,
+      name_raw as name,
+      brand_name_raw as brand,
       price_rec as price
     FROM store_products
     WHERE dispensary_id = $1