diff --git a/aa-graph.h b/aa-graph.h
deleted file mode 100644
index c375c0e..0000000
--- a/aa-graph.h
+++ /dev/null
@@ -1,924 +0,0 @@
-#ifndef GRAPH_H
-#define GRAPH_H
-
-const char graph_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>CAN Signal Graph Setup - Byun Logger</title>
-    <style>
-        * { margin: 0; padding: 0; box-sizing: border-box; }
-        body {
-            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
-            background: linear-gradient(135deg, #43cea2 0%, #185a9d 100%);
-            min-height: 100vh;
-            padding: 10px;
-        }
-        .container {
-            max-width: 1600px;
-            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, #43cea2 0%, #185a9d 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;
-        }
-        .nav a:hover { background: #34495e; }
-        .nav a.active { background: #3498db; }
-        .content { padding: 15px; }
-        
-        .dbc-upload {
-            background: #f8f9fa;
-            padding: 20px;
-            border-radius: 10px;
-            margin-bottom: 15px;
-            border: 2px solid #e0e0e0;
-        }
-        .upload-area {
-            border: 3px dashed #43cea2;
-            border-radius: 10px;
-            padding: 30px 20px;
-            text-align: center;
-            cursor: pointer;
-            transition: all 0.3s;
-            background: white;
-        }
-        .upload-area:hover { 
-            background: #f0f9ff; 
-            border-color: #185a9d;
-            transform: translateY(-2px);
-        }
-        .upload-area input { display: none; }
-        .upload-icon {
-            font-size: 3em;
-            margin-bottom: 10px;
-        }
-        
-        .signal-selector {
-            background: #f8f9fa;
-            padding: 15px;
-            border-radius: 10px;
-            margin-bottom: 15px;
-            border: 2px solid #e0e0e0;
-        }
-        
-        .search-container {
-            margin-bottom: 15px;
-            position: relative;
-        }
-        .search-box {
-            width: 100%;
-            padding: 12px 12px 12px 40px;
-            border: 2px solid #43cea2;
-            border-radius: 8px;
-            font-size: 0.95em;
-            transition: all 0.3s;
-        }
-        .search-box:focus {
-            outline: none;
-            border-color: #185a9d;
-            box-shadow: 0 0 0 3px rgba(67, 206, 162, 0.1);
-        }
-        .search-icon {
-            position: absolute;
-            left: 12px;
-            top: 50%;
-            transform: translateY(-50%);
-            color: #43cea2;
-            font-size: 1.2em;
-        }
-        .search-info {
-            margin-top: 8px;
-            padding: 8px 12px;
-            background: #e3f2fd;
-            border-radius: 5px;
-            font-size: 0.85em;
-            color: #185a9d;
-            font-weight: 600;
-        }
-        .no-results {
-            text-align: center;
-            padding: 40px 20px;
-            color: #666;
-            font-size: 0.95em;
-        }
-        .no-results-icon {
-            font-size: 3em;
-            margin-bottom: 10px;
-            opacity: 0.5;
-        }
-        
-        .sort-controls {
-            display: flex;
-            gap: 10px;
-            margin-bottom: 15px;
-            align-items: center;
-            flex-wrap: wrap;
-        }
-        .sort-label {
-            font-weight: 600;
-            color: #333;
-            font-size: 0.9em;
-        }
-        .sort-btn {
-            padding: 8px 15px;
-            border: 2px solid #43cea2;
-            background: white;
-            border-radius: 5px;
-            font-size: 0.85em;
-            cursor: pointer;
-            transition: all 0.3s;
-            font-weight: 600;
-        }
-        .sort-btn:hover {
-            background: #f0f9ff;
-            transform: translateY(-2px);
-        }
-        .sort-btn.active {
-            background: #43cea2;
-            color: white;
-        }
-        .signal-grid {
-            display: grid;
-            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
-            gap: 10px;
-            margin-top: 15px;
-        }
-        .signal-item {
-            background: white;
-            padding: 12px;
-            border-radius: 8px;
-            border: 2px solid #ddd;
-            cursor: pointer;
-            transition: all 0.3s;
-            position: relative;
-        }
-        .signal-item:hover { 
-            border-color: #43cea2; 
-            transform: translateY(-2px);
-            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
-        }
-        .signal-item.selected { 
-            border-color: #185a9d; 
-            background: linear-gradient(135deg, rgba(67, 206, 162, 0.1) 0%, rgba(24, 90, 157, 0.1) 100%);
-        }
-        .signal-item.selected::before {
-            content: '✓';
-            position: absolute;
-            top: 8px;
-            right: 8px;
-            background: #185a9d;
-            color: white;
-            width: 24px;
-            height: 24px;
-            border-radius: 50%;
-            display: flex;
-            align-items: center;
-            justify-content: center;
-            font-weight: 700;
-            font-size: 0.9em;
-        }
-        .signal-name { 
-            font-weight: 600; 
-            color: #333; 
-            margin-bottom: 5px; 
-            font-size: 0.95em;
-            padding-right: 30px;
-        }
-        .signal-info { 
-            font-size: 0.8em; 
-            color: #666; 
-            line-height: 1.5;
-        }
-        .signal-info-row {
-            margin-bottom: 3px;
-        }
-        .highlight {
-            background-color: #ffeb3b;
-            padding: 2px 0;
-            font-weight: 600;
-        }
-        
-        .controls {
-            display: flex;
-            gap: 8px;
-            margin-bottom: 15px;
-            flex-wrap: wrap;
-        }
-        .btn {
-            padding: 10px 20px;
-            border: none;
-            border-radius: 5px;
-            font-size: 0.9em;
-            font-weight: 600;
-            cursor: pointer;
-            transition: all 0.3s;
-        }
-        .btn-primary { background: linear-gradient(135deg, #43cea2 0%, #185a9d 100%); color: white; }
-        .btn-success { background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%); color: white; }
-        .btn-danger { background: linear-gradient(135deg, #eb3349 0%, #f45c43 100%); color: white; }
-        .btn-secondary { background: linear-gradient(135deg, #bdc3c7 0%, #95a5a6 100%); color: white; }
-        .btn:hover { 
-            transform: translateY(-2px); 
-            box-shadow: 0 5px 15px rgba(0,0,0,0.3); 
-        }
-        
-        h2 {
-            color: #333;
-            margin: 20px 0 15px 0;
-            padding-bottom: 8px;
-            border-bottom: 3px solid #43cea2;
-            font-size: 1.3em;
-        }
-        
-        .status { 
-            padding: 12px 15px; 
-            border-radius: 8px; 
-            margin-bottom: 15px; 
-            font-size: 0.9em;
-            border-left: 4px solid;
-        }
-        .status.success { 
-            background: #d4edda; 
-            color: #155724;
-            border-color: #28a745;
-        }
-        .status.error { 
-            background: #f8d7da; 
-            color: #721c24;
-            border-color: #dc3545;
-        }
-        .status.info {
-            background: #d1ecf1;
-            color: #0c5460;
-            border-color: #17a2b8;
-        }
-        
-        .selection-info {
-            background: linear-gradient(135deg, #e3f2fd 0%, #f0f9ff 100%);
-            padding: 15px 20px;
-            border-radius: 8px;
-            margin-bottom: 15px;
-            border-left: 4px solid #185a9d;
-            font-size: 0.95em;
-            color: #333;
-            display: flex;
-            justify-content: space-between;
-            align-items: center;
-            flex-wrap: wrap;
-            gap: 10px;
-        }
-        .selection-info strong {
-            color: #185a9d;
-            font-size: 1.1em;
-        }
-        .selection-count {
-            background: #185a9d;
-            color: white;
-            padding: 8px 16px;
-            border-radius: 20px;
-            font-weight: 700;
-            font-size: 1em;
-        }
-        
-        .info-box {
-            background: linear-gradient(135deg, #e3f2fd 0%, #f0f9ff 100%);
-            padding: 15px 20px;
-            border-radius: 8px;
-            margin-top: 15px;
-            border-left: 4px solid #185a9d;
-        }
-        .info-box p {
-            color: #333;
-            font-size: 0.9em;
-            margin: 0;
-            line-height: 1.6;
-        }
-        .info-box strong {
-            color: #185a9d;
-        }
-        
-        @media (max-width: 768px) {
-            body { padding: 5px; }
-            .header h1 { font-size: 1.5em; }
-            .content { padding: 10px; }
-            .signal-grid { 
-                grid-template-columns: 1fr; 
-                gap: 8px; 
-            }
-            h2 { font-size: 1.1em; }
-            .controls {
-                flex-direction: column;
-            }
-            .btn {
-                width: 100%;
-            }
-        }
-    </style>
-</head>
-<body>
-    <div class="container">
-        <div class="header">
-            <h1>📊 CAN Signal Graph Setup</h1>
-            <p>Configure real-time signal visualization (Max 20 signals)</p>
-        </div>
-        
-        <div class="nav">
-            <a href="/">📊 Monitor</a>
-            <a href="/transmit">📤 Transmit</a>
-            <a href="/graph" class="active">📈 Graph</a>
-            <a href="/graph-view">📊 Graph View</a>
-            <a href="/settings">⚙️ Settings</a>
-            <a href="/serial">📟 Serial</a>
-        </div>
-        
-        <div class="content">
-            <div id="status" class="status" style="display:none;"></div>
-            
-            <h2>📁 Upload DBC File</h2>
-            <div class="dbc-upload">
-                <div class="upload-area" onclick="document.getElementById('dbc-file').click()">
-                    <input type="file" id="dbc-file" accept=".dbc" onchange="loadDBCFile(event)">
-                    <div class="upload-icon">📄</div>
-                    <p style="font-size: 1.1em; margin-bottom: 8px; font-weight: 600;">Click or Drag & Drop DBC File</p>
-                    <p style="color: #666; font-size: 0.85em;" id="dbc-status">No file loaded</p>
-                </div>
-            </div>
-            
-            <div id="signal-section" style="display:none;">
-                <h2>🎯 Select Signals (Max 20)</h2>
-                
-                <div class="selection-info">
-                    <div>
-                        <strong>Selected Signals</strong>
-                    </div>
-                    <div class="selection-count">
-                        <span id="selected-count">0</span> / 20
-                    </div>
-                </div>
-                
-                <div class="controls">
-                    <button class="btn btn-success" onclick="startGraphing()">▶️ Start Graph Viewer</button>
-                    <button class="btn btn-danger" onclick="stopGraphing()">⏹️ Stop Logging</button>
-                    <button class="btn btn-secondary" onclick="clearSelection()">🗑️ Clear Selection</button>
-                    <button class="btn btn-primary" onclick="debugDBCInfo()">🐛 Debug Info</button>
-                </div>
-                
-                <div class="signal-selector">
-                    <div class="search-container">
-                        <span class="search-icon">🔍</span>
-                        <input type="text" 
-                               id="search-box" 
-                               class="search-box" 
-                               placeholder="Search by signal name, CAN ID (hex/dec), message name, or unit..."
-                               oninput="filterSignals()">
-                        <div id="search-info" class="search-info" style="display:none;"></div>
-                    </div>
-                    
-                    <div class="sort-controls">
-                        <span class="sort-label">📊 Sort by:</span>
-                        <button class="sort-btn active" id="sort-selection" onclick="setSortMode('selection')">
-                            ✓ Selection Order
-                        </button>
-                        <button class="sort-btn" id="sort-name-asc" onclick="setSortMode('name-asc')">
-                            🔼 Name (A→Z)
-                        </button>
-                        <button class="sort-btn" id="sort-name-desc" onclick="setSortMode('name-desc')">
-                            🔽 Name (Z→A)
-                        </button>
-                        <button class="sort-btn" id="sort-id-asc" onclick="setSortMode('id-asc')">
-                            🔼 CAN ID
-                        </button>
-                    </div>
-                    <div id="signal-list" class="signal-grid"></div>
-                </div>
-                
-                <div class="info-box">
-                    <p>
-                        <strong>ℹ️ How to use:</strong>
-                    </p>
-                    <p style="margin-top: 8px;">
-                        1. Select signals from the list above (click to toggle)<br>
-                        2. Click <strong>"▶️ Start Graph Viewer"</strong> to open a new window<br>
-                        3. The graph will display real-time data from the selected signals<br>
-                        4. Your selections are automatically saved in browser storage
-                    </p>
-                </div>
-            </div>
-        </div>
-    </div>
-    
-    <script>
-        let ws;
-        let dbcData = { messages: {}, valueTables: {} };
-        let selectedSignals = [];
-        let allSignals = [];
-        let filteredSignals = [];
-        let sortMode = 'selection';
-        let searchQuery = '';
-        const MAX_SIGNALS = 20;
-        
-        function initWebSocket() {
-            ws = new WebSocket('ws://' + window.location.hostname + ':81');
-            
-            ws.onopen = function() {
-                console.log('✓ WebSocket connected');
-            };
-            
-            ws.onclose = function() {
-                console.log('✗ WebSocket disconnected');
-                setTimeout(initWebSocket, 3000);
-            };
-            
-            ws.onmessage = function(event) {
-                try {
-                    const data = JSON.parse(event.data);
-                    // 필요시 처리
-                } catch(e) {
-                    console.error('Parse error:', e);
-                }
-            };
-        }
-        
-        function loadDBCFile(event) {
-            const file = event.target.files[0];
-            if (!file) return;
-            
-            showStatus('Loading DBC file: ' + file.name, 'info');
-            
-            const reader = new FileReader();
-            reader.onload = function(e) {
-                const content = e.target.result;
-                parseDBCContent(content);
-                document.getElementById('dbc-status').textContent = '✓ ' + file.name;
-                
-                saveDBCToLocalStorage(content, file.name);
-            };
-            reader.readAsText(file);
-        }
-        
-        function saveDBCToLocalStorage(content, filename) {
-            try {
-                localStorage.setItem('dbc_content', content);
-                localStorage.setItem('dbc_filename', filename);
-                console.log('✓ DBC saved to localStorage:', filename);
-            } catch(e) {
-                console.error('✗ Failed to save DBC:', e);
-                showStatus('Failed to save DBC to storage', 'error');
-            }
-        }
-        
-        function loadDBCFromLocalStorage() {
-            try {
-                const content = localStorage.getItem('dbc_content');
-                const filename = localStorage.getItem('dbc_filename');
-                
-                if (content && filename) {
-                    parseDBCContent(content);
-                    document.getElementById('dbc-status').textContent = '✓ ' + filename + ' (restored)';
-                    showStatus('DBC file restored: ' + filename, 'success');
-                    console.log('✓ DBC restored:', filename);
-                    return true;
-                }
-            } catch(e) {
-                console.error('✗ Failed to load DBC:', e);
-            }
-            return false;
-        }
-        
-        function parseDBCContent(content) {
-            console.log('=== Parsing DBC File ===');
-            dbcData = { messages: {}, valueTables: {} };
-            allSignals = [];
-            const lines = content.split('\n');
-            let currentMessage = null;
-            
-            // 1단계: VAL_ (Value Table) 파싱
-            for (let line of lines) {
-                line = line.trim();
-                
-                if (line.startsWith('VAL_ ')) {
-                    const match = line.match(/VAL_\s+(\d+)\s+(\w+)\s+(.+);/);
-                    if (match) {
-                        const msgId = parseInt(match[1]);
-                        const sigName = match[2];
-                        const valuesStr = match[3];
-                        
-                        const normalizedMsgId = (msgId & 0x80000000) ? (msgId & 0x1FFFFFFF) : msgId;
-                        const key = normalizedMsgId + '_' + sigName;
-                        dbcData.valueTables[key] = {};
-                        
-                        const valueMatches = valuesStr.matchAll(/(\d+)\s+"([^"]+)"/g);
-                        for (let vm of valueMatches) {
-                            dbcData.valueTables[key][parseInt(vm[1])] = vm[2];
-                        }
-                        
-                        console.log('  Value Table: ' + key, dbcData.valueTables[key]);
-                    }
-                }
-            }
-            
-            // 2단계: BO_ (Message) 및 SG_ (Signal) 파싱
-            for (let line of lines) {
-                line = line.trim();
-                
-                if (line.startsWith('BO_ ')) {
-                    const match = line.match(/BO_\s+(\d+)\s+(\w+)\s*:\s*(\d+)/);
-                    if (match) {
-                        let id = parseInt(match[1]);
-                        const name = match[2];
-                        const dlc = parseInt(match[3]);
-                        
-                        if (id & 0x80000000) {
-                            id = id & 0x1FFFFFFF;
-                        }
-                        
-                        currentMessage = {
-                            id: id,
-                            name: name,
-                            dlc: dlc,
-                            signals: []
-                        };
-                        dbcData.messages[id] = currentMessage;
-                        
-                        console.log('Message: ID=' + id + ' (0x' + id.toString(16).toUpperCase() + ') Name=' + name + ' DLC=' + dlc);
-                    }
-                }
-                else if (line.startsWith('SG_ ') && currentMessage) {
-                    const match = line.match(/SG_\s+(\w+)\s*:\s*(\d+)\|(\d+)@([01])([+-])\s*$([^,]+),([^)]+)$\s*$$([^$$]+)$$\s*"([^"]*)"/);
-                    if (match) {
-                        const signalName = match[1];
-                        const signal = {
-                            name: signalName,
-                            startBit: parseInt(match[2]),
-                            bitLength: parseInt(match[3]),
-                            byteOrder: match[4] === '0' ? 'motorola' : 'intel',
-                            signed: match[5] === '-',
-                            factor: parseFloat(match[6]),
-                            offset: parseFloat(match[7]),
-                            minMax: match[8],
-                            unit: match[9],
-                            messageId: currentMessage.id,
-                            messageName: currentMessage.name,
-                            messageDlc: currentMessage.dlc
-                        };
-                        
-                        const vtKey = currentMessage.id + '_' + signalName;
-                        if (dbcData.valueTables[vtKey]) {
-                            signal.valueTable = dbcData.valueTables[vtKey];
-                            console.log('  Signal (with VT): ' + signalName);
-                        } else {
-                            console.log('  Signal: ' + signalName);
-                        }
-                        
-                        currentMessage.signals.push(signal);
-                        allSignals.push(signal);
-                    }
-                }
-            }
-            
-            console.log('=== Parsing Complete ===');
-            console.log('Total Messages: ' + Object.keys(dbcData.messages).length);
-            console.log('Total Signals: ' + allSignals.length);
-            console.log('Total Value Tables: ' + Object.keys(dbcData.valueTables).length);
-            
-            filteredSignals = [...allSignals];
-            displaySignals();
-            showStatus('DBC loaded: ' + Object.keys(dbcData.messages).length + ' messages, ' + allSignals.length + ' signals', 'success');
-        }
-        
-        function filterSignals() {
-            searchQuery = document.getElementById('search-box').value.toLowerCase().trim();
-            
-            if (searchQuery === '') {
-                filteredSignals = [...allSignals];
-                document.getElementById('search-info').style.display = 'none';
-            } else {
-                filteredSignals = allSignals.filter(signal => {
-                    const nameMatch = signal.name.toLowerCase().includes(searchQuery);
-                    const idDecMatch = signal.messageId.toString().includes(searchQuery);
-                    const idHex = signal.messageId.toString(16).toLowerCase();
-                    const idHexMatch = idHex.includes(searchQuery) || idHex.includes(searchQuery.replace('0x', ''));
-                    const msgNameMatch = signal.messageName.toLowerCase().includes(searchQuery);
-                    const unitMatch = signal.unit && signal.unit.toLowerCase().includes(searchQuery);
-                    
-                    return nameMatch || idDecMatch || idHexMatch || msgNameMatch || unitMatch;
-                });
-                
-                const searchInfo = document.getElementById('search-info');
-                searchInfo.textContent = '🔍 Showing ' + filteredSignals.length + ' of ' + allSignals.length + ' signals';
-                searchInfo.style.display = 'block';
-            }
-            
-            displaySignals();
-        }
-        
-        function highlightText(text, query) {
-            if (!query) return text;
-            
-            const regex = new RegExp('(' + query.replace(/[.*+?^${}()|[$$\$$/g, '\\$&') + ')', 'gi');
-            return text.replace(regex, '<span class="highlight">$1</span>');
-        }
-        
-        function setSortMode(mode) {
-            sortMode = mode;
-            
-            document.querySelectorAll('.sort-btn').forEach(btn => btn.classList.remove('active'));
-            document.getElementById('sort-' + mode).classList.add('active');
-            
-            displaySignals();
-            console.log('Sort mode:', mode);
-        }
-        
-        function sortSignals(signals) {
-            if (sortMode === 'name-asc') {
-                return signals.sort((a, b) => a.name.localeCompare(b.name));
-            } else if (sortMode === 'name-desc') {
-                return signals.sort((a, b) => b.name.localeCompare(a.name));
-            } else if (sortMode === 'id-asc') {
-                return signals.sort((a, b) => a.messageId - b.messageId);
-            } else {
-                const selected = signals.filter(s => isSignalSelected(s));
-                const notSelected = signals.filter(s => !isSignalSelected(s));
-                return [...selected, ...notSelected];
-            }
-        }
-        
-        function isSignalSelected(signal) {
-            return selectedSignals.some(s => 
-                s.messageId === signal.messageId && s.name === signal.name);
-        }
-        
-        function displaySignals() {
-            const signalList = document.getElementById('signal-list');
-            signalList.innerHTML = '';
-            
-            const sortedSignals = sortSignals([...filteredSignals]);
-            
-            if (sortedSignals.length === 0) {
-                signalList.innerHTML = 
-                    '<div class="no-results">' +
-                    '<div class="no-results-icon">🔍</div>' +
-                    '<div><strong>No signals found</strong></div>' +
-                    '<div style="margin-top: 8px; color: #999;">Try a different search term</div>' +
-                    '</div>';
-                return;
-            }
-            
-            sortedSignals.forEach(signal => {
-                const item = document.createElement('div');
-                item.className = 'signal-item';
-                
-                if (isSignalSelected(signal)) {
-                    item.classList.add('selected');
-                }
-                
-                item.onclick = () => toggleSignal(signal, item);
-                
-                const canIdHex = '0x' + signal.messageId.toString(16).toUpperCase().padStart(3, '0');
-                const canIdDec = signal.messageId;
-                
-                const highlightedName = highlightText(signal.name, searchQuery);
-                const highlightedId = highlightText(canIdHex, searchQuery);
-                const highlightedMsgName = highlightText(signal.messageName, searchQuery);
-                const unitText = signal.unit ? highlightText(signal.unit, searchQuery) : 'no unit';
-                
-                item.innerHTML = 
-                    '<div class="signal-name">' + highlightedName + '</div>' +
-                    '<div class="signal-info">' +
-                    '<div class="signal-info-row">📍 CAN ID: ' + highlightedId + ' (' + canIdDec + ')</div>' +
-                    '<div class="signal-info-row">📦 Message: ' + highlightedMsgName + '</div>' +
-                    '<div class="signal-info-row">📊 Bit: ' + signal.startBit + '|' + signal.bitLength + ' | Unit: ' + unitText + '</div>' +
-                    '</div>';
-                
-                signalList.appendChild(item);
-            });
-            
-            document.getElementById('signal-section').style.display = 'block';
-            updateSelectionCount();
-        }
-        
-        function updateSelectionCount() {
-            document.getElementById('selected-count').textContent = selectedSignals.length;
-        }
-        
-        function toggleSignal(signal, element) {
-            const index = selectedSignals.findIndex(s => 
-                s.messageId === signal.messageId && s.name === signal.name);
-            
-            if (index >= 0) {
-                selectedSignals.splice(index, 1);
-                element.classList.remove('selected');
-            } else {
-                if (selectedSignals.length >= MAX_SIGNALS) {
-                    showStatus('⚠️ Maximum ' + MAX_SIGNALS + ' signals allowed!', 'error');
-                    return;
-                }
-                selectedSignals.push(signal);
-                element.classList.add('selected');
-            }
-            
-            updateSelectionCount();
-            saveSelectedSignals();
-            
-            if (sortMode === 'selection') {
-                displaySignals();
-            }
-        }
-        
-        function clearSelection() {
-            selectedSignals = [];
-            document.querySelectorAll('.signal-item').forEach(item => {
-                item.classList.remove('selected');
-            });
-            
-            updateSelectionCount();
-            saveSelectedSignals();
-            
-            if (sortMode === 'selection') {
-                displaySignals();
-            }
-            
-            showStatus('Selection cleared', 'info');
-        }
-        
-        function saveSelectedSignals() {
-            try {
-                localStorage.setItem('selected_signals', JSON.stringify(selectedSignals));
-                localStorage.setItem('sort_mode', sortMode);
-                console.log('✓ Saved ' + selectedSignals.length + ' signals');
-            } catch(e) {
-                console.error('✗ Failed to save signals:', e);
-            }
-        }
-        
-        function loadSelectedSignals() {
-            try {
-                const saved = localStorage.getItem('selected_signals');
-                const savedSortMode = localStorage.getItem('sort_mode');
-                
-                if (savedSortMode) {
-                    sortMode = savedSortMode;
-                    document.querySelectorAll('.sort-btn').forEach(btn => btn.classList.remove('active'));
-                    const btn = document.getElementById('sort-' + sortMode);
-                    if (btn) btn.classList.add('active');
-                }
-                
-                if (saved) {
-                    const signals = JSON.parse(saved);
-                    
-                    signals.forEach(savedSignal => {
-                        for (let msgId in dbcData.messages) {
-                            const msg = dbcData.messages[msgId];
-                            const signal = msg.signals.find(s => 
-                                s.messageId === savedSignal.messageId && s.name === savedSignal.name);
-                            
-                            if (signal) {
-                                selectedSignals.push(signal);
-                                break;
-                            }
-                        }
-                    });
-                    
-                    displaySignals();
-                    
-                    if (selectedSignals.length > 0) {
-                        showStatus('✓ Restored ' + selectedSignals.length + ' selected signals', 'success');
-                    }
-                }
-            } catch(e) {
-                console.error('✗ Failed to load signals:', e);
-            }
-        }
-        
-        function startGraphing() {
-            if (selectedSignals.length === 0) {
-                showStatus('⚠️ Please select at least one signal!', 'error');
-                return;
-            }
-            
-            saveSelectedSignals();
-            
-            const width = 1400;
-            const height = 900;
-            const left = (screen.width - width) / 2;
-            const top = (screen.height - height) / 2;
-            
-            window.open(
-                '/graph-view',
-                'CAN_Graph_Viewer',
-                'width=' + width + ',height=' + height + ',left=' + left + ',top=' + top + ',resizable=yes,scrollbars=yes'
-            );
-            
-            showStatus('✓ Graph viewer opened in new window', 'success');
-        }
-        
-        function stopGraphing() {
-            showStatus('ℹ️ Use the stop button in the graph viewer window', 'info');
-        }
-        
-        function debugDBCInfo() {
-            console.log('=== DBC Debug Info ===');
-            console.log('Messages:', Object.keys(dbcData.messages).length);
-            console.log('Signals:', allSignals.length);
-            console.log('Value Tables:', Object.keys(dbcData.valueTables).length);
-            console.log('Selected Signals:', selectedSignals.length);
-            
-            console.log('\n=== Messages ===');
-            Object.values(dbcData.messages).forEach(msg => {
-                console.log('ID: 0x' + msg.id.toString(16).toUpperCase() + ' | ' + msg.name + ' | Signals: ' + msg.signals.length);
-            });
-            
-            console.log('\n=== Selected Signals ===');
-            selectedSignals.forEach((sig, idx) => {
-                console.log((idx + 1) + '. ' + sig.name + ' (ID: 0x' + sig.messageId.toString(16).toUpperCase() + ')');
-            });
-            
-            showStatus('✓ Debug info printed to console (F12)', 'info');
-        }
-        
-        function showStatus(message, type) {
-            const status = document.getElementById('status');
-            status.textContent = message;
-            status.className = 'status ' + type;
-            status.style.display = 'block';
-            setTimeout(() => { status.style.display = 'none'; }, 5000);
-        }
-        
-        // Drag & Drop
-        const uploadArea = document.querySelector('.upload-area');
-        ['dragenter', 'dragover', 'dragleave', 'drop'].forEach(eventName => {
-            uploadArea.addEventListener(eventName, e => {
-                e.preventDefault();
-                e.stopPropagation();
-            });
-        });
-        
-        ['dragenter', 'dragover'].forEach(eventName => {
-            uploadArea.addEventListener(eventName, () => {
-                uploadArea.style.borderColor = '#185a9d';
-                uploadArea.style.background = '#f0f9ff';
-            });
-        });
-        
-        ['dragleave', 'drop'].forEach(eventName => {
-            uploadArea.addEventListener(eventName, () => {
-                uploadArea.style.borderColor = '#43cea2';
-                uploadArea.style.background = 'white';
-            });
-        });
-        
-        uploadArea.addEventListener('drop', function(e) {
-            const file = e.dataTransfer.files[0];
-            if (file && file.name.endsWith('.dbc')) {
-                const reader = new FileReader();
-                reader.onload = function(ev) {
-                    parseDBCContent(ev.target.result);
-                    document.getElementById('dbc-status').textContent = '✓ ' + file.name;
-                    saveDBCToLocalStorage(ev.target.result, file.name);
-                };
-                reader.readAsText(file);
-            } else {
-                showStatus('⚠️ Please drop a .dbc file', 'error');
-            }
-        });
-        
-        // 페이지 로드 시 복원
-        window.addEventListener('load', function() {
-            if (loadDBCFromLocalStorage()) {
-                setTimeout(() => loadSelectedSignals(), 100);
-            }
-        });
-        
-        initWebSocket();
-    </script>
-</body>
-</html>
-)rawliteral";
-
-#endif
