first commit

local/static/privacy.js

@@ -0,0 +1,15 @@
+/* Clear draft files and metadata across Site tabs when signing out. */
+(() => {
+  const signal='dtf-privacy-reset';
+  function notify(){window.dispatchEvent(new Event('dtf-private-data-cleared'));}
+  window.dtfForgetPrivateData=async()=>{
+    notify();
+    for(const key of Object.keys(localStorage))if(key.startsWith('dtf-'))localStorage.removeItem(key);
+    localStorage.setItem(signal,crypto.randomUUID());
+    const db=await new Promise((resolve,reject)=>{const r=indexedDB.open('dtf-local-cart',1);r.onupgradeneeded=()=>r.result.createObjectStore('cart');r.onsuccess=()=>resolve(r.result);r.onerror=()=>reject(r.error);});
+    try{await new Promise((resolve,reject)=>{const tx=db.transaction('cart','readwrite');tx.objectStore('cart').clear();tx.oncomplete=resolve;tx.onerror=()=>reject(tx.error);});}finally{db.close();}
+  };
+  window.addEventListener('storage',event=>{
+    if(event.key===signal && event.newValue){notify();location.reload();}
+  });
+})();