feat: enhance product analysis results with additional fields and update handling logic

src/bestsellers-by-category.ts

@@ -212,7 +212,33 @@ export async function insertProductAnalysisResults(
       ?, ?, ?, ?, ?, ?, ?, ?, ?, ?,
       ?, ?, ?, ?, ?, ?, ?, ?, ?, ?,
       ?, ?, ?, ?, ?, ?
-    );
+    )
+    ON CONFLICT(asin) DO UPDATE SET
+      run_id = excluded.run_id,
+      name = excluded.name,
+      brand = excluded.brand,
+      category = excluded.category,
+      unit_cost = excluded.unit_cost,
+      current_price = excluded.current_price,
+      avg_price_90d = excluded.avg_price_90d,
+      avg_price_90d_sheet = excluded.avg_price_90d_sheet,
+      selling_price_sheet = excluded.selling_price_sheet,
+      sales_rank = excluded.sales_rank,
+      sales_rank_avg_90d = excluded.sales_rank_avg_90d,
+      seller_count = excluded.seller_count,
+      monthly_sold = excluded.monthly_sold,
+      rank_drops_30d = excluded.rank_drops_30d,
+      rank_drops_90d = excluded.rank_drops_90d,
+      fba_fee = excluded.fba_fee,
+      fbm_fee = excluded.fbm_fee,
+      referral_percent = excluded.referral_percent,
+      can_sell = excluded.can_sell,
+      sellability_status = excluded.sellability_status,
+      sellability_reason = excluded.sellability_reason,
+      verdict = excluded.verdict,
+      confidence = excluded.confidence,
+      reasoning = excluded.reasoning,
+      fetched_at = excluded.fetched_at;
   `);
 
   db.transaction((resultsBatch: AnalysisResult[]) => {