diff --git a/aa-index.h b/aa-index.h
deleted file mode 100644
index fd624fa..0000000
--- a/aa-index.h
+++ /dev/null
@@ -1,1348 +0,0 @@
-#ifndef INDEX_H
-#define INDEX_H
-
-const char index_html[] PROGMEM = R"rawliteral(
-<!DOCTYPE html>
-<html>
-<head>
-    <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
-    <title>Byun CAN Logger v2.5</title>
-    <style>
-        * { margin: 0; padding: 0; box-sizing: border-box; }
-        body {
-            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
-            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
-            min-height: 100vh;
-            padding: 10px;
-        }
-        .container {
-            max-width: 1400px;
-            margin: 0 auto;
-            background: white;
-            border-radius: 15px;
-            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
-            overflow: hidden;
-        }
-        .header {
-            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
-            color: white;
-            padding: 20px;
-            text-align: center;
-        }
-        .header h1 { font-size: 1.8em; margin-bottom: 5px; }
-        .header p { opacity: 0.9; font-size: 0.9em; }
-        .nav {
-            background: #2c3e50;
-            padding: 10px;
-            display: flex;
-            gap: 10px;
-            flex-wrap: wrap;
-            justify-content: center;
-        }
-        .nav a {
-            color: white;
-            text-decoration: none;
-            padding: 10px 15px;
-            border-radius: 5px;
-            transition: all 0.3s;
-            font-size: 0.9em;
-            white-space: nowrap;
-        }
-        .nav a:hover { background: #34495e; }
-        .nav a.active { background: #3498db; }
-        .content { padding: 15px; }
-        
-        /* PSRAM 상태 표시 (NEW) */
-        .psram-status {
-            background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
-            color: white;
-            padding: 10px 15px;
-            border-radius: 8px;
-            margin-bottom: 15px;
-            display: flex;
-            align-items: center;
-            justify-content: space-between;
-            box-shadow: 0 3px 10px rgba(79, 172, 254, 0.3);
-        }
-        .psram-status-label {
-            font-size: 0.85em;
-            font-weight: 600;
-            display: flex;
-            align-items: center;
-            gap: 8px;
-        }
-        .psram-status-values {
-            display: flex;
-            gap: 15px;
-            align-items: center;
-        }
-        .psram-status-item {
-            display: flex;
-            flex-direction: column;
-            align-items: flex-end;
-        }
-        .psram-status-item-label {
-            font-size: 0.7em;
-            opacity: 0.9;
-        }
-        .psram-status-value {
-            font-family: 'Courier New', monospace;
-            font-size: 1.2em;
-            font-weight: 700;
-        }
-        
-        /* 전력 경고 배너 */
-        .power-warning {
-            background: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
-            color: white;
-            padding: 12px 20px;
-            border-radius: 8px;
-            margin-bottom: 15px;
-            display: none;
-            align-items: center;
-            gap: 10px;
-            box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
-            animation: pulse 2s ease-in-out infinite;
-        }
-        .power-warning.show { display: flex; }
-        .power-warning-icon { font-size: 1.5em; }
-        .power-warning-text { flex: 1; font-weight: 600; }
-        .power-voltage { 
-            font-family: 'Courier New', monospace; 
-            font-size: 1.2em; 
-            font-weight: 700;
-            background: rgba(255,255,255,0.2);
-            padding: 5px 12px;
-            border-radius: 5px;
-        }
-        @keyframes pulse {
-            0%, 100% { opacity: 1; }
-            50% { opacity: 0.85; }
-        }
-        
-        /* 전력 상태 표시 */
-        .power-status {
-            background: linear-gradient(135deg, #56ab2f 0%, #a8e063 100%);
-            color: white;
-            padding: 10px 15px;
-            border-radius: 8px;
-            margin-bottom: 15px;
-            display: flex;
-            align-items: center;
-            justify-content: space-between;
-            box-shadow: 0 3px 10px rgba(86, 171, 47, 0.3);
-            flex-wrap: wrap;
-            gap: 10px;
-        }
-        .power-status.low {
-            background: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
-            box-shadow: 0 3px 10px rgba(255, 107, 107, 0.3);
-        }
-        .power-status-label {
-            font-size: 0.85em;
-            font-weight: 600;
-            display: flex;
-            align-items: center;
-            gap: 8px;
-        }
-        .power-status-values {
-            display: flex;
-            gap: 15px;
-            align-items: center;
-            flex-wrap: wrap;
-        }
-        .power-status-item {
-            display: flex;
-            flex-direction: column;
-            align-items: flex-end;
-        }
-        .power-status-item-label {
-            font-size: 0.7em;
-            opacity: 0.9;
-        }
-        .power-status-value {
-            font-family: 'Courier New', monospace;
-            font-size: 1.2em;
-            font-weight: 700;
-        }
-        
-        /* 큐 상태 표시 - 2개 (CAN + Serial) */
-        .queue-container {
-            display: grid;
-            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
-            gap: 10px;
-            margin-bottom: 15px;
-        }
-        .queue-status {
-            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
-            color: white;
-            padding: 10px 15px;
-            border-radius: 8px;
-            display: flex;
-            flex-direction: column;
-            gap: 8px;
-            box-shadow: 0 3px 10px rgba(102, 126, 234, 0.3);
-        }
-        .queue-status.warning {
-            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
-        }
-        .queue-status.critical {
-            background: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
-            animation: pulse 2s ease-in-out infinite;
-        }
-        .queue-info {
-            display: flex;
-            align-items: center;
-            gap: 10px;
-        }
-        .queue-bar-container {
-            height: 20px;
-            background: rgba(255, 255, 255, 0.2);
-            border-radius: 10px;
-            overflow: hidden;
-            position: relative;
-        }
-        .queue-bar {
-            height: 100%;
-            background: rgba(255, 255, 255, 0.8);
-            border-radius: 10px;
-            transition: width 0.3s ease;
-        }
-        .queue-text {
-            position: absolute;
-            width: 100%;
-            text-align: center;
-            line-height: 20px;
-            font-size: 0.75em;
-            font-weight: 700;
-            color: white;
-            text-shadow: 0 1px 2px rgba(0,0,0,0.3);
-        }
-        
-        .time-sync-banner {
-            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
-            color: white;
-            padding: 15px 20px;
-            border-radius: 10px;
-            margin-bottom: 20px;
-            display: flex;
-            justify-content: space-between;
-            align-items: center;
-            flex-wrap: wrap;
-            gap: 15px;
-            box-shadow: 0 4px 15px rgba(240, 147, 251, 0.4);
-        }
-        .time-sync-info {
-            display: flex;
-            gap: 20px;
-            align-items: center;
-            flex-wrap: wrap;
-        }
-        .time-info-item {
-            display: flex;
-            flex-direction: column;
-            gap: 3px;
-        }
-        .time-label {
-            font-size: 0.75em;
-            opacity: 0.9;
-            font-weight: 600;
-        }
-        .time-value {
-            font-family: 'Courier New', monospace;
-            font-size: 1.1em;
-            font-weight: 700;
-        }
-        .btn-time-sync {
-            background: white;
-            color: #f5576c;
-            padding: 12px 24px;
-            border: none;
-            border-radius: 8px;
-            font-size: 1em;
-            font-weight: 700;
-            cursor: pointer;
-            transition: all 0.3s;
-            white-space: nowrap;
-        }
-        .btn-time-sync:hover {
-            transform: translateY(-2px);
-            box-shadow: 0 4px 12px rgba(0,0,0,0.2);
-        }
-        
-        .status-grid {
-            display: grid;
-            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
-            gap: 10px;
-            margin-bottom: 20px;
-        }
-        .status-card {
-            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
-            color: white;
-            padding: 15px;
-            border-radius: 10px;
-            text-align: center;
-            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
-            transition: all 0.3s;
-        }
-        .status-card:hover {
-            transform: translateY(-3px);
-            box-shadow: 0 6px 20px rgba(0,0,0,0.3);
-        }
-        .status-card h3 {
-            font-size: 0.75em;
-            opacity: 0.9;
-            margin-bottom: 8px;
-            letter-spacing: 1px;
-        }
-        .status-card .value {
-            font-size: 1.5em;
-            font-weight: 700;
-            font-family: 'Courier New', monospace;
-        }
-        .status-card.status-on {
-            background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
-        }
-        .status-card.status-off {
-            background: linear-gradient(135deg, #eb3349 0%, #f45c43 100%);
-        }
-        
-        h2 {
-            color: #333;
-            margin: 20px 0 10px 0;
-            font-size: 1.3em;
-            border-bottom: 3px solid #667eea;
-            padding-bottom: 8px;
-        }
-        
-        .control-panel {
-            background: #f8f9fa;
-            padding: 15px;
-            border-radius: 10px;
-            margin-bottom: 20px;
-            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
-        }
-        .control-row {
-            display: flex;
-            align-items: center;
-            gap: 10px;
-            margin-bottom: 10px;
-            flex-wrap: wrap;
-        }
-        .control-row:last-child {
-            margin-bottom: 0;
-        }
-        .control-row label {
-            font-weight: 600;
-            color: #333;
-            white-space: nowrap;
-        }
-        .control-row select {
-            padding: 8px 12px;
-            border: 2px solid #ddd;
-            border-radius: 5px;
-            font-size: 0.95em;
-            transition: all 0.3s;
-            background: white;
-        }
-        .control-row select:focus {
-            outline: none;
-            border-color: #667eea;
-        }
-        .control-row button {
-            padding: 8px 16px;
-            border: none;
-            border-radius: 5px;
-            font-size: 0.95em;
-            font-weight: 600;
-            cursor: pointer;
-            transition: all 0.3s;
-            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
-            color: white;
-        }
-        .control-row button:hover {
-            transform: translateY(-2px);
-            box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
-        }
-        
-        .can-table-container {
-            overflow-x: auto;
-            background: white;
-            border-radius: 10px;
-            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
-            margin-bottom: 20px;
-        }
-        table {
-            width: 100%;
-            border-collapse: collapse;
-            min-width: 600px;
-        }
-        thead {
-            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
-            color: white;
-        }
-        th {
-            padding: 12px 8px;
-            text-align: left;
-            font-weight: 600;
-            font-size: 0.85em;
-            letter-spacing: 0.5px;
-        }
-        td {
-            padding: 10px 8px;
-            border-bottom: 1px solid #eee;
-            font-size: 0.9em;
-        }
-        tr:hover {
-            background: #f8f9fa;
-        }
-        .mono {
-            font-family: 'Courier New', monospace;
-            font-weight: 500;
-        }
-        @keyframes flash {
-            0%, 100% { background-color: transparent; }
-            50% { background-color: #fff3cd; }
-        }
-        .flash-row {
-            animation: flash 0.3s ease-in-out;
-        }
-        
-        .file-list {
-            background: #f8f9fa;
-            border-radius: 10px;
-            padding: 15px;
-            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
-        }
-        .file-item {
-            background: white;
-            border: 1px solid #e0e0e0;
-            padding: 12px;
-            margin-bottom: 10px;
-            border-radius: 8px;
-            display: flex;
-            justify-content: space-between;
-            align-items: center;
-            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
-            transition: all 0.3s;
-            flex-wrap: wrap;
-            gap: 10px;
-        }
-        .file-item:hover {
-            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
-            transform: translateY(-2px);
-        }
-        .file-item:last-child {
-            margin-bottom: 0;
-        }
-        .file-item.logging {
-            border: 2px solid #11998e;
-            background: linear-gradient(135deg, rgba(17, 153, 142, 0.05) 0%, rgba(56, 239, 125, 0.05) 100%);
-        }
-        .file-item.selected {
-            border: 2px solid #667eea;
-            background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
-        }
-        .file-checkbox {
-            width: 20px;
-            height: 20px;
-            cursor: pointer;
-        }
-        .file-info {
-            flex: 1;
-            min-width: 200px;
-        }
-        .file-name {
-            font-weight: 600;
-            color: #333;
-            margin-bottom: 4px;
-            font-family: 'Courier New', monospace;
-            font-size: 0.95em;
-            display: flex;
-            align-items: center;
-            gap: 8px;
-            flex-wrap: wrap;
-        }
-        .file-comment {
-            font-size: 0.85em;
-            color: #666;
-            font-style: italic;
-            margin-top: 4px;
-        }
-        .file-size {
-            color: #666;
-            font-size: 0.85em;
-        }
-        .file-actions {
-            display: flex;
-            gap: 8px;
-        }
-        .logging-badge {
-            background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
-            color: white;
-            padding: 3px 8px;
-            border-radius: 4px;
-            font-size: 0.75em;
-            font-weight: 700;
-            letter-spacing: 0.5px;
-        }
-        .download-btn, .delete-btn, .comment-btn {
-            padding: 6px 12px;
-            border: none;
-            border-radius: 5px;
-            font-size: 0.85em;
-            font-weight: 600;
-            cursor: pointer;
-            transition: all 0.3s;
-            white-space: nowrap;
-        }
-        .download-btn {
-            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
-            color: white;
-        }
-        .download-btn:hover {
-            background: linear-gradient(135deg, #5568d3 0%, #66409e 100%);
-        }
-        .comment-btn {
-            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
-            color: white;
-        }
-        .comment-btn:hover {
-            background: linear-gradient(135deg, #e77fe8 0%, #e44459 100%);
-        }
-        .delete-btn {
-            background: linear-gradient(135deg, #eb3349 0%, #f45c43 100%);
-            color: white;
-        }
-        .delete-btn:hover {
-            background: linear-gradient(135deg, #d32f3f 0%, #e53935 100%);
-        }
-        .delete-btn:disabled, .comment-btn:disabled {
-            background: #cccccc;
-            cursor: not-allowed;
-            opacity: 0.6;
-        }
-        
-        /* 모달 스타일 */
-        .modal {
-            display: none;
-            position: fixed;
-            z-index: 1000;
-            left: 0;
-            top: 0;
-            width: 100%;
-            height: 100%;
-            background-color: rgba(0,0,0,0.5);
-        }
-        .modal-content {
-            background-color: white;
-            margin: 15% auto;
-            padding: 25px;
-            border-radius: 10px;
-            width: 90%;
-            max-width: 500px;
-            box-shadow: 0 4px 20px rgba(0,0,0,0.3);
-        }
-        .modal-header {
-            font-size: 1.3em;
-            font-weight: 700;
-            color: #333;
-            margin-bottom: 15px;
-        }
-        .modal-body {
-            margin-bottom: 20px;
-        }
-        .modal-body label {
-            display: block;
-            font-weight: 600;
-            color: #333;
-            margin-bottom: 8px;
-        }
-        .modal-body input, .modal-body textarea {
-            width: 100%;
-            padding: 10px;
-            border: 2px solid #ddd;
-            border-radius: 5px;
-            font-size: 1em;
-            font-family: inherit;
-        }
-        .modal-body input:focus, .modal-body textarea:focus {
-            outline: none;
-            border-color: #667eea;
-        }
-        .modal-buttons {
-            display: flex;
-            gap: 10px;
-            justify-content: flex-end;
-        }
-        .modal-buttons button {
-            padding: 10px 20px;
-            border: none;
-            border-radius: 5px;
-            font-size: 1em;
-            font-weight: 600;
-            cursor: pointer;
-            transition: all 0.3s;
-        }
-        .btn-modal-save {
-            background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
-            color: white;
-        }
-        .btn-modal-cancel {
-            background: #ddd;
-            color: #333;
-        }
-        
-        /* 파일 형식 선택 라디오 버튼 스타일 */
-        .format-selector {
-            display: flex;
-            align-items: center;
-            gap: 15px;
-            background: white;
-            padding: 8px 15px;
-            border-radius: 8px;
-            border: 2px solid #667eea;
-        }
-        
-        .format-selector label {
-            display: flex;
-            align-items: center;
-            gap: 5px;
-            cursor: pointer;
-            font-weight: 600;
-            color: #2c3e50;
-            font-size: 0.9em;
-            transition: all 0.3s;
-        }
-        
-        .format-selector label:hover {
-            color: #667eea;
-        }
-        
-        .format-selector input[type="radio"] {
-            width: 18px;
-            height: 18px;
-            cursor: pointer;
-            accent-color: #667eea;
-        }
-        
-        .format-info {
-            font-size: 0.75em;
-            color: #7f8c8d;
-            margin-left: 3px;
-        }
-        
-        @media (max-width: 768px) {
-            body { padding: 5px; }
-            .header h1 { font-size: 1.5em; }
-            .header p { font-size: 0.85em; }
-            .content { padding: 10px; }
-            .status-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
-            .status-card { padding: 10px; }
-            .status-card h3 { font-size: 0.7em; }
-            .status-card .value { font-size: 1.2em; }
-            h2 { font-size: 1.1em; }
-            .nav a { padding: 8px 12px; font-size: 0.85em; }
-            table { min-width: 400px; }
-            th, td { padding: 6px 4px; font-size: 0.75em; }
-            .queue-container { grid-template-columns: 1fr; }
-        }
-    </style>
-</head>
-<body>
-    <div class="container">
-        <div class="header">
-            <h1>🚗 Byun CAN Logger v2.5 PSRAM</h1>
-            <p>ESP32-S3 High Performance Edition - 1Mbps CAN + Serial Logger</p>
-        </div>
-        
-        <div class="nav">
-            <a href="/" class="active">📊 Monitor</a>
-            <a href="/transmit">📤 Transmit</a>
-            <a href="/graph">📈 Graph</a>
-            <a href="/graph-view">📊 Graph View</a>
-            <a href="/settings">⚙️ Settings</a>
-            <a href="/serial">📟 Serial</a>
-        </div>
-        
-        <div class="content">
-            <div class="time-sync-banner">
-                <div class="time-sync-info">
-                    <div class="time-info-item">
-                        <div class="time-label">CURRENT TIME</div>
-                        <div class="time-value" id="current-time">--:--:--</div>
-                    </div>
-                    <div class="time-info-item">
-                        <div class="time-label">CONNECTION</div>
-                        <div class="time-value" id="sync-status">연결 중...</div>
-                    </div>
-                </div>
-                <button class="btn-time-sync" onclick="syncTimeFromPhone()">📱 Sync from Phone</button>
-            </div>
-            
-            <!-- PSRAM 상태 표시 (NEW) -->
-            <div class="psram-status">
-                <div class="psram-status-label">
-                    <span>💾</span>
-                    <span>PSRAM STATUS</span>
-                </div>
-                <div class="psram-status-values">
-                    <div class="psram-status-item">
-                        <div class="psram-status-item-label">TOTAL</div>
-                        <div class="psram-status-value" id="psram-total">8192 KB</div>
-                    </div>
-                    <div class="psram-status-item">
-                        <div class="psram-status-item-label">FREE</div>
-                        <div class="psram-status-value" id="psram-free">---- KB</div>
-                    </div>
-                    <div class="psram-status-item">
-                        <div class="psram-status-item-label">USAGE</div>
-                        <div class="psram-status-value" id="psram-usage">---%</div>
-                    </div>
-                </div>
-            </div>
-            
-            <div class="power-status" id="power-status">
-                <div class="power-status-label">
-                    <span>⚡</span>
-                    <span>POWER STATUS</span>
-                </div>
-                <div class="power-status-values">
-                    <div class="power-status-item">
-                        <div class="power-status-item-label">CURRENT</div>
-                        <div class="power-status-value" id="voltage-current">-.--V</div>
-                    </div>
-                    <div class="power-status-item">
-                        <div class="power-status-item-label">MIN (1s)</div>
-                        <div class="power-status-value" id="voltage-min">-.--V</div>
-                    </div>
-                </div>
-            </div>
-            
-            <!-- 큐 상태 표시 (CAN + Serial) -->
-            <div class="queue-container">
-                <div class="queue-status" id="can-queue-status">
-                    <div class="queue-info">
-                        <span style="font-size: 1.2em;">📦</span>
-                        <span style="font-weight: 700; font-size: 0.9em;">CAN QUEUE</span>
-                    </div>
-                    <div class="queue-bar-container">
-                        <div class="queue-bar" id="can-queue-bar" style="width: 0%;"></div>
-                        <div class="queue-text" id="can-queue-text">0 / 10000</div>
-                    </div>
-                </div>
-                
-                <div class="queue-status" id="serial-queue-status">
-                    <div class="queue-info">
-                        <span style="font-size: 1.2em;">📟</span>
-                        <span style="font-weight: 700; font-size: 0.9em;">SERIAL QUEUE</span>
-                    </div>
-                    <div class="queue-bar-container">
-                        <div class="queue-bar" id="serial-queue-bar" style="width: 0%;"></div>
-                        <div class="queue-text" id="serial-queue-text">0 / 2000</div>
-                    </div>
-                </div>
-            </div>
-            
-            <div class="status-grid">
-                <div class="status-card status-off" id="logging-status">
-                    <h3>CAN LOGGING</h3>
-                    <div class="value">OFF</div>
-                </div>
-                <div class="status-card status-off" id="serial-logging-status">
-                    <h3>SERIAL LOGGING</h3>
-                    <div class="value">OFF</div>
-                </div>
-                <div class="status-card status-off" id="sd-status">
-                    <h3>SD CARD</h3>
-                    <div class="value">NOT READY</div>
-                </div>
-                <div class="status-card">
-                    <h3>CAN MESSAGES</h3>
-                    <div class="value" id="msg-count">0</div>
-                </div>
-                <div class="status-card">
-                    <h3>CAN SPEED</h3>
-                    <div class="value" id="msg-speed">0/s</div>
-                </div>
-                <div class="status-card">
-                    <h3>CAN TX</h3>
-                    <div class="value" id="tx-count">0</div>
-                </div>
-                <div class="status-card status-off" id="time-sync-card">
-                    <h3>TIME SYNC</h3>
-                    <div class="value" id="sync-count">0</div>
-                </div>
-                <div class="status-card" id="mcp-mode-card">
-                    <h3>MCP MODE</h3>
-                    <div class="value" id="mcp-mode-display">NORMAL</div>
-                </div>
-            </div>
-            
-            <div class="control-panel">
-                <h2>Control Panel</h2>
-                <div class="control-row">
-                    <label for="can-speed">CAN Speed:</label>
-                    <select id="can-speed">
-                        <option value="0">125 Kbps</option>
-                        <option value="1">250 Kbps</option>
-                        <option value="2">500 Kbps</option>
-                        <option value="3" selected>1 Mbps</option>
-                    </select>
-                    <button onclick="setCanSpeed()">Apply</button>
-                    <span id="speed-status" style="color: #11998e; font-size: 0.85em; font-weight: 600;"></span>
-                </div>
-                <div class="control-row">
-                    <label for="mcp-mode">MCP2515 Mode:</label>
-                    <select id="mcp-mode">
-                        <option value="0" selected>Normal (TX/RX + ACK)</option>
-                        <option value="1">Listen-Only (RX only, no ACK)</option>
-                        <option value="2">Loopback (Self-test)</option>
-                        <option value="3">Transmit Only (TX auto-switch)</option>
-                    </select>
-                    <button onclick="setMcpMode()">Apply</button>
-                    <span id="mode-status" style="color: #11998e; font-size: 0.85em; font-weight: 600;"></span>
-                </div>
-                <div class="control-row">
-                    <label style="font-weight: 600; color: #333;">📁 CAN Format:</label>
-                    <div class="format-selector">
-                        <label>
-                            <input type="radio" name="can-format" value="bin" checked>
-                            <span>📦 BIN</span>
-                            <span class="format-info">(Fast)</span>
-                        </label>
-                        <label>
-                            <input type="radio" name="can-format" value="csv">
-                            <span>📄 CSV</span>
-                            <span class="format-info">(Excel)</span>
-                        </label>
-                    </div>
-                </div>
-                <div class="control-row">
-                    <button onclick="startLogging()" style="background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);">Start CAN Logging</button>
-                    <button onclick="stopLogging()" style="background: linear-gradient(135deg, #eb3349 0%, #f45c43 100%);">Stop CAN Logging</button>
-                    <button onclick="refreshFiles()">Refresh Files</button>
-                    <button onclick="clearMessages()">Clear Display</button>
-                </div>
-            </div>
-            
-            <h2>CAN Messages (Real-time by ID)</h2>
-            <div class="can-table-container">
-                <table>
-                    <thead>
-                        <tr>
-                            <th>ID</th>
-                            <th>DLC</th>
-                            <th>Data</th>
-                            <th>Count</th>
-                            <th>Last Update</th>
-                        </tr>
-                    </thead>
-                    <tbody id="can-messages"></tbody>
-                </table>
-            </div>
-            
-            <h2>Log Files</h2>
-            <div class="control-row" style="margin-bottom: 10px;">
-                <button onclick="selectAllFiles()" style="background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);">Select All</button>
-                <button onclick="deselectAllFiles()" style="background: linear-gradient(135deg, #bdc3c7 0%, #95a5a6 100%);">Deselect All</button>
-                <button onclick="downloadSelectedFiles()" style="background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);">Download Selected</button>
-                <button onclick="deleteSelectedFiles()" style="background: linear-gradient(135deg, #eb3349 0%, #f45c43 100%);">Delete Selected</button>
-            </div>
-            <div class="file-list" id="file-list">
-                <p style="text-align: center; color: #666; font-size: 0.9em;">Loading...</p>
-            </div>
-        </div>
-    </div>
-    
-    <!-- 커멘트 추가 모달 -->
-    <div id="commentModal" class="modal">
-        <div class="modal-content">
-            <div class="modal-header">Add File Comment</div>
-            <div class="modal-body">
-                <label>File: <span id="comment-filename" style="font-family: 'Courier New', monospace;"></span></label>
-                <label for="comment-input" style="margin-top: 10px;">Comment:</label>
-                <textarea id="comment-input" rows="3" maxlength="128" placeholder="Enter description..."></textarea>
-            </div>
-            <div class="modal-buttons">
-                <button class="btn-modal-cancel" onclick="closeCommentModal()">Cancel</button>
-                <button class="btn-modal-save" onclick="saveComment()">Save</button>
-            </div>
-        </div>
-    </div>
-    
-    <script>
-        let ws;
-        let canMessages = {};
-        let messageOrder = [];
-        let lastMessageData = {};
-        let lastCanCounts = {};
-        const speedNames = {0: '125K', 1: '250K', 2: '500K', 3: '1M'};
-        const modeNames = {0: 'NORMAL', 1: 'LISTEN', 2: 'LOOPBACK', 3: 'TX-ONLY'};
-        let currentLoggingFile = '';
-        let currentSerialLoggingFile = '';
-        let commentingFile = '';
-        let hasInitialSync = false;
-        
-        function updateCurrentTime() {
-            const now = new Date();
-            const timeStr = now.toLocaleTimeString('ko-KR', {hour12: false});
-            document.getElementById('current-time').textContent = timeStr;
-        }
-        setInterval(updateCurrentTime, 1000);
-        updateCurrentTime();
-        
-        function syncTimeFromPhone() {
-            const now = new Date();
-            const timeData = {
-                cmd: 'syncTimeFromPhone',
-                year: now.getFullYear(),
-                month: now.getMonth() + 1,
-                day: now.getDate(),
-                hour: now.getHours(),
-                minute: now.getMinutes(),
-                second: now.getSeconds()
-            };
-            
-            if (ws && ws.readyState === WebSocket.OPEN) {
-                ws.send(JSON.stringify(timeData));
-                console.log('Time sync:', timeData);
-            }
-        }
-        
-        function initWebSocket() {
-            ws = new WebSocket('ws://' + window.location.hostname + ':81/');
-            
-            ws.onopen = function() {
-                console.log('WebSocket connected');
-                document.getElementById('sync-status').textContent = '연결됨';
-                document.getElementById('sync-status').style.color = '#38ef7d';
-                
-                if (!hasInitialSync) {
-                    setTimeout(syncTimeFromPhone, 500);
-                    hasInitialSync = true;
-                }
-            };
-            
-            ws.onclose = function() {
-                console.log('WebSocket disconnected');
-                document.getElementById('sync-status').textContent = '연결 끊김';
-                document.getElementById('sync-status').style.color = '#f45c43';
-                setTimeout(initWebSocket, 3000);
-            };
-            
-            ws.onerror = function(error) {
-                console.error('WebSocket error:', error);
-            };
-            
-            ws.onmessage = function(event) {
-                try {
-                    const data = JSON.parse(event.data);
-                    
-                    if (data.type === 'update') {
-                        updateStatus(data);
-                        if (data.messages && data.messages.length > 0) {
-                            updateCanMessages(data.messages);
-                        }
-                    } else if (data.type === 'files') {
-                        updateFileList(data.list);
-                    }
-                } catch (e) {
-                    console.error('Parse error:', e);
-                }
-            };
-        }
-        
-        function updateStatus(data) {
-            // CAN 로깅
-            const loggingCard = document.getElementById('logging-status');
-            if (data.logging) {
-                loggingCard.classList.add('status-on');
-                loggingCard.classList.remove('status-off');
-                loggingCard.querySelector('.value').textContent = 'ON';
-            } else {
-                loggingCard.classList.remove('status-on');
-                loggingCard.classList.add('status-off');
-                loggingCard.querySelector('.value').textContent = 'OFF';
-            }
-            
-            // Serial 로깅
-            const serialLoggingCard = document.getElementById('serial-logging-status');
-            if (data.serialLogging) {
-                serialLoggingCard.classList.add('status-on');
-                serialLoggingCard.classList.remove('status-off');
-                serialLoggingCard.querySelector('.value').textContent = 'ON';
-            } else {
-                serialLoggingCard.classList.remove('status-on');
-                serialLoggingCard.classList.add('status-off');
-                serialLoggingCard.querySelector('.value').textContent = 'OFF';
-            }
-            
-            // SD 카드
-            const sdCard = document.getElementById('sd-status');
-            if (data.sdReady) {
-                sdCard.classList.add('status-on');
-                sdCard.classList.remove('status-off');
-                sdCard.querySelector('.value').textContent = 'READY';
-            } else {
-                sdCard.classList.remove('status-on');
-                sdCard.classList.add('status-off');
-                sdCard.querySelector('.value').textContent = 'NO SD';
-            }
-            
-            // CAN Queue
-            const canQueueUsed = data.queueUsed || 0;
-            const canQueueMax = data.queueSize || 10000;
-            const canQueuePercent = (canQueueUsed / canQueueMax) * 100;
-            document.getElementById('can-queue-bar').style.width = canQueuePercent + '%';
-            document.getElementById('can-queue-text').textContent = canQueueUsed + ' / ' + canQueueMax;
-            
-            const canQueueStatus = document.getElementById('can-queue-status');
-            canQueueStatus.classList.remove('warning', 'critical');
-            if (canQueuePercent > 90) {
-                canQueueStatus.classList.add('critical');
-            } else if (canQueuePercent > 70) {
-                canQueueStatus.classList.add('warning');
-            }
-            
-            // Serial Queue
-            const serialQueueUsed = data.serialQueueUsed || 0;
-            const serialQueueMax = data.serialQueueSize || 2000;
-            const serialQueuePercent = (serialQueueUsed / serialQueueMax) * 100;
-            document.getElementById('serial-queue-bar').style.width = serialQueuePercent + '%';
-            document.getElementById('serial-queue-text').textContent = serialQueueUsed + ' / ' + serialQueueMax;
-            
-            const serialQueueStatus = document.getElementById('serial-queue-status');
-            serialQueueStatus.classList.remove('warning', 'critical');
-            if (serialQueuePercent > 90) {
-                serialQueueStatus.classList.add('critical');
-            } else if (serialQueuePercent > 70) {
-                serialQueueStatus.classList.add('warning');
-            }
-            
-            // PSRAM 상태 (NEW)
-            if (data.psramFree !== undefined) {
-                document.getElementById('psram-free').textContent = (data.psramFree / 1024).toFixed(0) + ' KB';
-                const psramTotal = 8192; // 8MB
-                const psramUsed = psramTotal - (data.psramFree / 1024);
-                const psramUsage = ((psramUsed / psramTotal) * 100).toFixed(1);
-                document.getElementById('psram-usage').textContent = psramUsage + '%';
-            }
-            
-            // 메시지 카운트
-            if (data.totalMsg !== undefined) {
-                document.getElementById('msg-count').textContent = data.totalMsg.toLocaleString();
-            }
-            if (data.msgPerSec !== undefined) {
-                document.getElementById('msg-speed').textContent = data.msgPerSec + '/s';
-            }
-            if (data.totalTx !== undefined) {
-                document.getElementById('tx-count').textContent = data.totalTx.toLocaleString();
-            }
-            
-            // 시간 동기화
-            const timeSyncCard = document.getElementById('time-sync-card');
-            if (data.timeSync) {
-                timeSyncCard.classList.add('status-on');
-                timeSyncCard.classList.remove('status-off');
-                document.getElementById('sync-count').textContent = data.syncCount || 0;
-            } else {
-                timeSyncCard.classList.remove('status-on');
-                timeSyncCard.classList.add('status-off');
-                document.getElementById('sync-count').textContent = '0';
-            }
-            
-            // MCP 모드
-            if (data.mcpMode !== undefined) {
-                document.getElementById('mcp-mode-display').textContent = modeNames[data.mcpMode];
-            }
-            
-            // 전압
-            if (data.voltage !== undefined) {
-                document.getElementById('voltage-current').textContent = data.voltage.toFixed(2) + 'V';
-            }
-            if (data.minVoltage !== undefined) {
-                document.getElementById('voltage-min').textContent = data.minVoltage.toFixed(2) + 'V';
-            }
-            if (data.lowVoltage) {
-                document.getElementById('power-status').classList.add('low');
-            } else {
-                document.getElementById('power-status').classList.remove('low');
-            }
-            
-            // 현재 파일
-            currentLoggingFile = data.currentFile || '';
-            currentSerialLoggingFile = data.currentSerialFile || '';
-        }
-        
-        function updateCanMessages(messages) {
-            let hasNewData = false;
-            
-            messages.forEach(msg => {
-                if (msg.count > 0) {
-                    const canId = msg.id.toString(16).toUpperCase();
-                    const prevCount = lastCanCounts[canId] || 0;
-                    
-                    if (msg.count > prevCount) {
-                        if (!canMessages[canId]) {
-                            messageOrder.push(canId);
-                        }
-                        
-                        let dataStr = '';
-                        if (msg.data && msg.data.length > 0) {
-                            dataStr = msg.data.map(b => b.toString(16).toUpperCase().padStart(2, '0')).join(' ');
-                        }
-                        
-                        canMessages[canId] = {
-                            timestamp: Date.now(),
-                            dlc: msg.dlc,
-                            data: dataStr,
-                            updateCount: msg.count
-                        };
-                        
-                        lastCanCounts[canId] = msg.count;
-                        hasNewData = true;
-                    }
-                }
-            });
-            
-            if (hasNewData) {
-                updateCanTable();
-            }
-        }
-        
-        function updateCanTable() {
-            const tbody = document.getElementById('can-messages');
-            const existingRows = new Map();
-            Array.from(tbody.rows).forEach(row => {
-                existingRows.set(row.dataset.canId, row);
-            });
-            
-            messageOrder.forEach(canId => {
-                const msg = canMessages[canId];
-                let row = existingRows.get(canId);
-                
-                let displayId = parseInt(canId, 16);
-                if (displayId & 0x80000000) {
-                    displayId = displayId & 0x1FFFFFFF;
-                }
-                const displayIdStr = '0x' + displayId.toString(16).toUpperCase().padStart(8, '0');
-                
-                const timeStr = new Date(msg.timestamp).toLocaleTimeString('ko-KR', {hour12: false});
-                
-                if (row) {
-                    row.cells[0].textContent = displayIdStr;
-                    row.cells[1].textContent = msg.dlc;
-                    row.cells[2].textContent = msg.data;
-                    row.cells[3].textContent = msg.updateCount;
-                    row.cells[4].textContent = timeStr;
-                    
-                    row.classList.add('flash-row');
-                    setTimeout(() => row.classList.remove('flash-row'), 300);
-                } else {
-                    row = tbody.insertRow();
-                    row.dataset.canId = canId;
-                    row.innerHTML = 
-                        '<td class="mono">' + displayIdStr + '</td>' +
-                        '<td>' + msg.dlc + '</td>' +
-                        '<td class="mono">' + msg.data + '</td>' +
-                        '<td>' + msg.updateCount + '</td>' +
-                        '<td>' + timeStr + '</td>';
-                    row.classList.add('flash-row');
-                    setTimeout(() => row.classList.remove('flash-row'), 300);
-                }
-            });
-        }
-        
-        function updateFileList(files) {
-            const fileList = document.getElementById('file-list');
-            
-            if (!files || files.length === 0) {
-                fileList.innerHTML = '<p style="text-align: center; color: #666;">No files</p>';
-                return;
-            }
-            
-            files.sort((a, b) => b.name.localeCompare(a.name));
-            
-            fileList.innerHTML = '';
-            files.forEach(file => {
-                const isCanLogging = (currentLoggingFile && file.name === currentLoggingFile);
-                const isSerialLogging = (currentSerialLoggingFile && file.name === currentSerialLoggingFile);
-                const isLogging = isCanLogging || isSerialLogging;
-                
-                const fileItem = document.createElement('div');
-                fileItem.className = 'file-item' + (isLogging ? ' logging' : '');
-                
-                let nameHtml = '<div class="file-name">' + file.name;
-                if (isCanLogging) {
-                    nameHtml += '<span class="logging-badge">CAN LOGGING</span>';
-                }
-                if (isSerialLogging) {
-                    nameHtml += '<span class="logging-badge" style="background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);">SERIAL LOGGING</span>';
-                }
-                nameHtml += '</div>';
-                
-                let commentHtml = '';
-                if (file.comment) {
-                    commentHtml = '<div class="file-comment">' + file.comment + '</div>';
-                }
-                
-                fileItem.innerHTML = 
-                    '<input type="checkbox" class="file-checkbox" data-filename="' + file.name + '" ' +
-                    (isLogging ? 'disabled' : '') + '>' +
-                    '<div class="file-info">' +
-                        nameHtml +
-                        '<div class="file-size">' + formatBytes(file.size) + '</div>' +
-                        commentHtml +
-                    '</div>' +
-                    '<div class="file-actions">' +
-                        '<button class="comment-btn" onclick="openCommentModal(\'' + file.name + '\')" ' + 
-                        (isLogging ? 'disabled' : '') + '>Comment</button>' +
-                        '<button class="download-btn" onclick="downloadFile(\'' + file.name + '\')">Download</button>' +
-                        '<button class="delete-btn" onclick="deleteFile(\'' + file.name + '\')" ' + 
-                        (isLogging ? 'disabled' : '') + '>Delete</button>' +
-                    '</div>';
-                fileList.appendChild(fileItem);
-            });
-        }
-        
-        function formatBytes(bytes) {
-            if (bytes < 1024) return bytes + ' B';
-            if (bytes < 1024 * 1024) return (bytes / 1024).toFixed(2) + ' KB';
-            return (bytes / (1024 * 1024)).toFixed(2) + ' MB';
-        }
-        
-        function setCanSpeed() {
-            const speed = document.getElementById('can-speed').value;
-            ws.send(JSON.stringify({cmd: 'setSpeed', speed: parseInt(speed)}));
-            console.log('CAN speed set:', speedNames[speed]);
-        }
-        
-        function setMcpMode() {
-            const mode = document.getElementById('mcp-mode').value;
-            ws.send(JSON.stringify({cmd: 'setMcpMode', mode: parseInt(mode)}));
-            console.log('MCP mode set:', modeNames[mode]);
-        }
-        
-        function startLogging() {
-            if (ws && ws.readyState === WebSocket.OPEN) {
-                let canFormat = 'bin';
-                const formatRadios = document.getElementsByName('can-format');
-                for (const radio of formatRadios) {
-                    if (radio.checked) {
-                        canFormat = radio.value;
-                        break;
-                    }
-                }
-                
-                ws.send(JSON.stringify({cmd: 'startLogging', format: canFormat}));
-                console.log('Start CAN logging:', canFormat);
-                setTimeout(refreshFiles, 1000);
-            }
-        }
-        
-        function stopLogging() {
-            if (ws && ws.readyState === WebSocket.OPEN) {
-                ws.send(JSON.stringify({cmd: 'stopLogging'}));
-                console.log('Stop CAN logging');
-                setTimeout(refreshFiles, 1000);
-            }
-        }
-        
-        function refreshFiles() {
-            if (ws && ws.readyState === WebSocket.OPEN) {
-                ws.send(JSON.stringify({cmd: 'getFiles'}));
-            }
-        }
-        
-        function clearMessages() {
-            canMessages = {};
-            messageOrder = [];
-            lastMessageData = {};
-            lastCanCounts = {};
-            document.getElementById('can-messages').innerHTML = '';
-        }
-        
-        function downloadFile(filename) {
-            window.location.href = '/download?file=' + encodeURIComponent(filename);
-        }
-        
-        function deleteFile(filename) {
-            if (!confirm('Delete "' + filename + '"?')) return;
-            if (ws && ws.readyState === WebSocket.OPEN) {
-                ws.send(JSON.stringify({cmd: 'deleteFile', filename: filename}));
-            }
-        }
-        
-        function openCommentModal(filename) {
-            commentingFile = filename;
-            document.getElementById('comment-filename').textContent = filename;
-            document.getElementById('comment-input').value = '';
-            document.getElementById('commentModal').style.display = 'block';
-        }
-        
-        function closeCommentModal() {
-            document.getElementById('commentModal').style.display = 'none';
-        }
-        
-        function saveComment() {
-            const comment = document.getElementById('comment-input').value.trim();
-            if (!comment) return alert('Enter comment');
-            
-            if (ws && ws.readyState === WebSocket.OPEN) {
-                ws.send(JSON.stringify({cmd: 'addComment', filename: commentingFile, comment: comment}));
-            }
-            closeCommentModal();
-        }
-        
-        function selectAllFiles() {
-            document.querySelectorAll('.file-checkbox:not(:disabled)').forEach(cb => {
-                cb.checked = true;
-                cb.closest('.file-item').classList.add('selected');
-            });
-        }
-        
-        function deselectAllFiles() {
-            document.querySelectorAll('.file-checkbox').forEach(cb => {
-                cb.checked = false;
-                cb.closest('.file-item').classList.remove('selected');
-            });
-        }
-        
-        function downloadSelectedFiles() {
-            const selected = Array.from(document.querySelectorAll('.file-checkbox:checked')).map(cb => cb.dataset.filename);
-            if (selected.length === 0) return alert('Select files');
-            
-            selected.forEach((filename, i) => {
-                setTimeout(() => downloadFile(filename), i * 500);
-            });
-        }
-        
-        function deleteSelectedFiles() {
-            const selected = Array.from(document.querySelectorAll('.file-checkbox:checked')).map(cb => cb.dataset.filename);
-            if (selected.length === 0) return alert('Select files');
-            if (!confirm('Delete ' + selected.length + ' files?')) return;
-            
-            selected.forEach(filename => {
-                if (ws && ws.readyState === WebSocket.OPEN) {
-                    ws.send(JSON.stringify({cmd: 'deleteFile', filename: filename}));
-                }
-            });
-            setTimeout(deselectAllFiles, 1000);
-        }
-        
-        window.onclick = function(event) {
-            if (event.target == document.getElementById('commentModal')) {
-                closeCommentModal();
-            }
-        }
-        
-        initWebSocket();
-        setTimeout(refreshFiles, 2000);
-    </script>
-</body>
-</html>
-)rawliteral";
-
-#endif
