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

test_query.php

@@ -0,0 +1,11 @@
+<?php
+$pdo = new PDO('mysql:host=127.0.0.1;dbname=telegaruda_v2;charset=utf8', 'root', '');
+$subjectRef = "vallika v";
+$stmt = $pdo->prepare("SELECT * FROM users WHERE LOWER(CONCAT(first_name, ' ', last_name)) = ?");
+$stmt->execute([strtolower(trim($subjectRef))]);
+$row = $stmt->fetch(PDO::FETCH_ASSOC);
+if ($row) {
+    echo "Found patient ID: " . $row['id'] . "\n";
+} else {
+    echo "Patient not found by name.\n";
+}