refactor: clean up comments and unused code in various files

TEST/testNASAPI.js

@@ -1,31 +1,9 @@
-/**
- * NAS Backend API Test
- *
- * Usage:
- *   node TEST/testNASAPI.js
- *
- * Environment variables:
- *   BACKEND_URL  (default http://localhost:3001)
- *   NAS_HOST     e.g. 192.168.1.100
- *   NAS_PORT     default 22
- *   NAS_USER     SSH username
- *   NAS_PASS     SSH password
- *   NAS_FOLDER   default /home/user/photos
- *
- * Tests:
- *   1. Backend health check
- *   2. SFTP connect
- *   3. List directory
- *   4. Disconnect
- */
-
 const BACKEND_URL = process.env.BACKEND_URL || 'http://localhost:3001';
 
 async function main() {
   console.log('\n--- NAS Backend API Test ---');
   console.log(`Backend: ${BACKEND_URL}\n`);
 
-  // 1 — Health check
   console.log('[1] Health check...');
   try {
     const res = await fetch(`${BACKEND_URL}/api/health`);
@@ -50,7 +28,6 @@ async function main() {
     return;
   }
 
-  // 2 — Connect
   let connectionToken = null;
   console.log(`[2] SFTP connect to ${host}:${port}...`);
   try {
@@ -74,7 +51,6 @@ async function main() {
     Authorization: `Bearer ${connectionToken}`,
   };
 
-  // 3 — List directory
   console.log(`[3] List directory "${folder}"...`);
   try {
     const res = await fetch(`${BACKEND_URL}/api/sftp/list`, {
@@ -93,7 +69,6 @@ async function main() {
     console.log(`    Failed: ${err.message}\n`);
   }
 
-  // 4 — Disconnect
   console.log('[4] Disconnect...');
   try {
     const res = await fetch(`${BACKEND_URL}/api/sftp/disconnect`, {