Enhance content sanitization across various components by integrating 'dompurify' for improved security and update package dependencies in package.json and package-lock.json.

scripts/find-membership-values.js

@@ -6,6 +6,8 @@ async function main() {
   const uploads = path.join(process.cwd(), 'public', 'uploads')
   const files = fs.existsSync(uploads) ? fs.readdirSync(uploads).filter(f => f.toLowerCase().endsWith('.pdf')) : []
   if (files.length === 0) { console.log('no pdfs'); return }
+  // nosemgrep: javascript.lang.security.audit.path-traversal.path-join-resolve-traversal
+  // files are from readdirSync, filtered to .pdf only, path traversal prevented
   files.sort((a,b) => fs.statSync(path.join(uploads,b)).mtimeMs - fs.statSync(path.join(uploads,a)).mtimeMs)
   const latest = path.join(uploads, files[0])
   console.log('Inspecting', latest)