diff --git a/check_tables.php b/check_tables.php
deleted file mode 100644
index 7f7d961..0000000
--- a/check_tables.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-try {
-    $db = new PDO('sqlite:d:/Docker/jasan/dda/assets.db');
-    $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
-    $tables = $db->query("SELECT name FROM sqlite_master WHERE type='table'")->fetchAll(PDO::FETCH_COLUMN);
-    print_r($tables);
-} catch (Exception $e) {
-    echo $e->getMessage();
-}
diff --git a/config.php b/config.php
index b7c518f..6c06bf9 100644
--- a/config.php
+++ b/config.php
@@ -19,6 +19,16 @@ try {
     $db->exec("PRAGMA foreign_keys=ON;");
     $db->exec("PRAGMA busy_timeout=5000;"); // SQLite 동시성 최적화
 
+    // [중요] 시스템 설정 테이블 자동 생성 및 기본값 보정
+    $db->exec("CREATE TABLE IF NOT EXISTS system_settings (
+        key_name TEXT PRIMARY KEY,
+        value TEXT
+    )");
+    
+    // 초기 기본값 삽입 (이미 존재하면 무시)
+    $db->exec("INSERT OR IGNORE INTO system_settings (key_name, value) VALUES ('menu_cards_visible', '1')");
+    $db->exec("INSERT OR IGNORE INTO system_settings (key_name, value) VALUES ('menu_mfp_visible', '1')");
+
 } catch (PDOException $e) {
     die("Database Connection Failed: " . $e->getMessage());
 }
diff --git a/debug_db.php b/debug_db.php
deleted file mode 100644
index e622bea..0000000
--- a/debug_db.php
+++ /dev/null
@@ -1,5 +0,0 @@
-<?php
-$db = new PDO('sqlite:d:\Docker\jasan\dda\assets.db');
-$rows = $db->query("SELECT id, asset_tag, status, assigned_user_name FROM laptop_assets LIMIT 50")->fetchAll(PDO::FETCH_ASSOC);
-echo json_encode($rows, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);
-?>
\ No newline at end of file
diff --git a/nav.php b/nav.php
index dc3ee09..bc682c0 100644
--- a/nav.php
+++ b/nav.php
@@ -6,17 +6,13 @@
 require_once 'config.php';
 $current_page = basename($_SERVER['PHP_SELF']);
 
-// 시스템 설정 로드 (최상단으로 이동하여 하위 include 페이지에서 즉시 사용 가능하도록 함)
+// 시스템 설정 로드 (config.php에서 테이블 생성을 보장함)
 $settings = [];
 try {
     $settings = $db->query("SELECT key_name, value FROM system_settings")->fetchAll(PDO::FETCH_KEY_PAIR);
 } catch (Exception $e) {
-    // 테이블이 없거나 에러 발생 시 기본값
-    $settings = [];
+    $settings = ['menu_cards_visible' => '1', 'menu_mfp_visible' => '1'];
 }
-// 기본값 보정
-if (!isset($settings['menu_cards_visible'])) $settings['menu_cards_visible'] = '1';
-if (!isset($settings['menu_mfp_visible'])) $settings['menu_mfp_visible'] = '1';
 ?>
 <nav class="fixed top-0 left-0 right-0 bg-[#0f172a] text-white z-[100] shadow-2xl border-b border-blue-500/20 px-6">
     <div class="max-w-[1600px] mx-auto h-20 flex items-center justify-between">