From cb0aa2d815696b3b043b89207289232c6acda4d8 Mon Sep 17 00:00:00 2001
From: kithub <kito@j-code.org>
Date: Fri, 9 Oct 2026 14:07:53 +0000
Subject: [PATCH] =?UTF-8?q?index.html=20=E3=82=92=E8=BF=BD=E5=8A=A0?=
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 index.html | 19 +++++++++++++++++++
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diff --git a/index.html b/index.html
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+<!DOCTYPE html>
+<html lang="ja">
+<head>
+  <meta charset="UTF-8">
+  <title>ESP32 ブラウザ書き込みツール</title>
+  <script type="module" src="https://unpkg.com/esp-web-tools@9/dist/web/install-button.js?module"></script>
+  <style>
+    body { font-family: sans-serif; text-align: center; padding: 2rem; background: #f4f6f8; }
+    .card { background: white; max-width: 500px; margin: auto; padding: 2rem; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
+  </style>
+</head>
+<body>
+  <div class="card">
+    <h2>ESP32 実機書き込み</h2>
+    <p>ChromebookとESP32をUSBケーブルで接続し、下のボタンを押してください。</p>
+    <esp-web-install-button manifest="manifest.json"></esp-web-install-button>
+  </div>
+</body>
+</html>