feat: v1.0.0 收尾 — 五芯片 DTR/RTS、类型声明、示例、CI

- CP210x / FTDI / PL2303 补齐 setSignals()（编码与各自初始化序列一致）
- 新增 index.d.ts（TypeScript 类型声明）、examples/minimal.html（最小接入示例）
- 新增 .gitea/workflows/ci.yml（push 时跑离线单测）、.gitattributes（强制 LF）、CHANGELOG.md
- package.json 补 repository / homepage / bugs / types / engines
- 单测 16 项全部通过：node test/driver.test.mjs

examples/minimal.html

@@ -0,0 +1,53 @@
+<!doctype html>
+<html lang="zh-CN">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<title>ch340-webusb 最小示例</title>
+<style>
+  body { font:14px/1.6 system-ui,sans-serif; margin:0 auto; max-width:640px; padding:16px; }
+  button { padding:10px 14px; font-size:14px; }
+  pre { background:#0b0d12; color:#d8dee9; padding:10px; border-radius:8px; height:220px; overflow:auto; }
+</style>
+</head>
+<body>
+<h3>ch340-webusb 最小示例</h3>
+<p>
+  <button id="connect">连接 CH340</button>
+  <button id="close" disabled>断开</button>
+  <input id="text" value="hello" size="12">
+  <button id="send" disabled>发送</button>
+</p>
+<pre id="log"></pre>
+
+<script src="../ch340-webusb.js"></script>
+<script>
+// 1. 选设备（必须由用户点击触发）
+document.getElementById('connect').onclick = async () => {
+  const port = await TamaCh340.requestPort({ baudRate: 115200 });
+  // 2. 打开：内部完成 CH340 芯片初始化（波特率 / LCR / DTR-RTS）
+  await port.open({ baudRate: 115200 });
+  const writer = port.writable.getWriter();
+  const reader = port.readable.getReader();
+
+  (async () => {                                   // 3. 收
+    for (;;) {
+      const { value, done } = await reader.read();
+      if (done) break;
+      log('RX ' + Array.from(value).map(b => b.toString(16).padStart(2, '0')).join(' '));
+    }
+  })();
+
+  document.getElementById('send').onclick = () =>  // 4. 发
+    writer.write(new TextEncoder().encode(document.getElementById('text').value + '\r\n'));
+  document.getElementById('send').disabled = false;
+  document.getElementById('connect').disabled = true;
+  document.getElementById('close').disabled = false;
+  log('已连接 ' + JSON.stringify(port.getInfo()) + ' chip=' + port.chip);
+};
+
+document.getElementById('close').onclick = async () => { location.reload(); };
+function log(s) { const el = document.getElementById('log'); el.textContent += s + '\n'; el.scrollTop = el.scrollHeight; }
+</script>
+</body>
+</html>