vari piccoli fix. Importati js e css per eliminare i warning e correzioni W3c.

scratch/download_vendor.js

@@ -0,0 +1,52 @@
+const fs = require('fs');
+const path = require('path');
+const https = require('https');
+
+const vendorDir = path.join(__dirname, '..', 'public', 'vendor');
+if (!fs.existsSync(vendorDir)) {
+  fs.mkdirSync(vendorDir, { recursive: true });
+}
+
+const files = [
+  { url: 'https://cdn.jsdelivr.net/npm/quill@2.0.2/dist/quill.snow.css', dest: 'quill.snow.css' },
+  { url: 'https://cdn.jsdelivr.net/npm/quill@2.0.2/dist/quill.js', dest: 'quill.js' },
+  { url: 'https://cdn.jsdelivr.net/npm/chart.js', dest: 'chart.js' },
+  { url: 'https://cdnjs.cloudflare.com/ajax/libs/pdf.js/3.11.174/pdf.min.js', dest: 'pdf.min.js' },
+  { url: 'https://cdn.jsdelivr.net/npm/pdf-lib@1.17.1/dist/pdf-lib.min.js', dest: 'pdf-lib.min.js' }
+];
+
+function download(url, destPath) {
+  return new Promise((resolve, reject) => {
+    https.get(url, (res) => {
+      if (res.statusCode >= 300 && res.statusCode < 400 && res.headers.location) {
+        return download(res.headers.location, destPath).then(resolve).catch(reject);
+      }
+      if (res.statusCode !== 200) {
+        return reject(new Error(`Failed to download ${url}: status ${res.statusCode}`));
+      }
+      const file = fs.createWriteStream(destPath);
+      res.pipe(file);
+      file.on('finish', () => {
+        file.close(() => {
+          console.log(`Downloaded: ${path.basename(destPath)} (${fs.statSync(destPath).size} bytes)`);
+          resolve();
+        });
+      });
+    }).on('error', (err) => {
+      reject(err);
+    });
+  });
+}
+
+async function main() {
+  for (const f of files) {
+    const destPath = path.join(vendorDir, f.dest);
+    try {
+      await download(f.url, destPath);
+    } catch (err) {
+      console.error(`Error downloading ${f.dest}:`, err.message);
+    }
+  }
+}
+
+main();