feat: 添加前端页面处理和静态资源支持

- 移除测试端点，添加前端页面处理逻辑
- 实现静态资源处理功能
- 添加SPA路由支持，所有未匹配路径返回前端页面
- 更新依赖，添加@cloudflare/kv-asset-handler

.wrangler/tmp/bundle-0fkApo/checked-fetch.js

@@ -0,0 +1,30 @@
+const urls = new Set();
+
+function checkURL(request, init) {
+	const url =
+		request instanceof URL
+			? request
+			: new URL(
+					(typeof request === "string"
+						? new Request(request, init)
+						: request
+					).url
+				);
+	if (url.port && url.port !== "443" && url.protocol === "https:") {
+		if (!urls.has(url.toString())) {
+			urls.add(url.toString());
+			console.warn(
+				`WARNING: known issue with \`fetch()\` requests to custom HTTPS ports in published Workers:\n` +
+					` - ${url.toString()} - the custom port will be ignored when the Worker is published using the \`wrangler deploy\` command.\n`
+			);
+		}
+	}
+}
+
+globalThis.fetch = new Proxy(globalThis.fetch, {
+	apply(target, thisArg, argArray) {
+		const [request, init] = argArray;
+		checkURL(request, init);
+		return Reflect.apply(target, thisArg, argArray);
+	},
+});