add local server

.gitignore

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+node_modules/
+.vibe42-run.log
+.vibe42-run.pid

package.json

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+{
+  "name": "vacation-planner",
+  "private": true,
+  "type": "commonjs",
+  "scripts": {
+    "start": "node server.js"
+  }
+}

server.js

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+const http = require("http");
+const fs = require("fs");
+const path = require("path");
+
+const PORT = process.env.PORT || 3000;
+
+http.createServer((req, res) => {
+  let file = req.url === "/" ? "/index.html" : req.url.split("?")[0];
+  const full = path.join(__dirname, file);
+  
+  if (full.startsWith(__dirname) && fs.existsSync(full) && fs.statSync(full).isFile()) {
+    const ext = path.extname(full);
+    const type = ext === ".css" ? "text/css" : ext === ".js" ? "application/javascript" : "text/html";
+    res.writeHead(200, { "Content-Type": type + "; charset=utf-8" });
+    return res.end(fs.readFileSync(full));
+  }
+  
+  res.writeHead(404); res.end("Not found");
+}).listen(PORT, () => console.log("Планировщик отпуска на порту " + PORT));