feat: add core backend modules, inventory services, and patch scripts for AI Pharmacy API

scratch/test_seed.ts

@@ -0,0 +1,27 @@
+import { seedDummyInventoryForTenant } from '../src/db/seedTenant';
+import { pool } from '../src/db/pool';
+
+async function test() {
+  const testTenant = 'hosp_demo_' + Date.now();
+  console.log('Testing seeding for tenant:', testTenant);
+
+  await seedDummyInventoryForTenant(testTenant);
+
+  const suppliers = await pool.query('SELECT * FROM suppliers WHERE tenant_id = $1', [testTenant]);
+  console.log('Suppliers seeded count:', suppliers.rows.length);
+  suppliers.rows.forEach(s => console.log(' Supplier:', s.name, 'ID:', s.id));
+
+  const batches = await pool.query(`
+    SELECT b.batch_no, b.qty_on_hand, b.expiry, p.brand_name 
+    FROM batches b 
+    JOIN products p ON b.product_id = p.id 
+    WHERE b.tenant_id = $1
+  `, [testTenant]);
+
+  console.log('Batches seeded count:', batches.rows.length);
+  batches.rows.forEach(b => console.log(' Batch:', b.batch_no, 'Brand:', b.brand_name, 'Qty:', b.qty_on_hand));
+
+  await pool.end();
+}
+
+test().catch(console.error);