feat: implement product grid data fetching with schema self-healing and add a database verification script.

scripts/diagnose-db.ts

@@ -0,0 +1,27 @@
+
+import { db } from "@/db";
+import { ventesProduits } from "@/db/schema";
+import { sql } from "drizzle-orm";
+
+async function main() {
+  console.log("--- DB DIAGNOSIS Start ---");
+  try {
+    const results = await db.execute(sql`
+      SELECT 
+        code_fournisseur, 
+        nom_fournisseur, 
+        COUNT(*) as total_rows, 
+        COUNT(DISTINCT codein) as distinct_products
+      FROM ventes_produits
+      GROUP BY code_fournisseur, nom_fournisseur
+      ORDER BY total_rows DESC
+    `);
+    
+    console.table(results.rows);
+  } catch (error) {
+    console.error("Diagnosis failed:", error);
+  }
+  console.log("--- DB DIAGNOSIS End ---");
+}
+
+main();