Update static/app.js

static/app.js

@@ -189,7 +189,10 @@ function renderPresenceList() {
 
 async function startCamera() {
     try {
-        const stream = await navigator.mediaDevices.getUserMedia({ video: { width: 640, height: 480, facingMode: "user" } });
+        // Requested 1280x720 (HD) for maximum AI recognition detail
+        const stream = await navigator.mediaDevices.getUserMedia({ 
+            video: { width: 1280, height: 720, facingMode: "user" } 
+        });
         video.srcObject = stream;
         video.onloadedmetadata = () => {
             canvas.width = video.videoWidth; canvas.height = video.videoHeight;