">
<canvas id="canvas"></canvas>
</div>
<div id="toolbar">
<input type="file" id="imageUpload" accept="image/*">
<button class="tool-btn" id="penTool">ペン</button>
<button class="tool-btn" id="eraserTool">消しゴム</button>
<button class="tool-btn" id="polygonSelectTool">多角形選択</button>
<button class="tool-btn" id="magicWandTool">マジックワンド</button>
<input type="range" id="brushSize" min="1" max="50" value="10">
<input type="color" id="colorPicker" value="#ff0000">
<button class="t