Initialize vault in main entry point

- Import and export UncloseVault
- Load CryptoJS dynamically for vault encryption
- Initialize vault on page load (auto-restores session if valid)
- Expose vault globally via window.UncloseVault

public/uncloseai.js

@@ -16,6 +16,30 @@ import * as Storage from "./src/storage.js";
 import * as Translation from "./src/translation.js";
 import * as TTS from "./src/tts.js";
 import * as UI from "./src/ui.js";
+import { UncloseVault } from "./src/vault.js";
+
+// -------------------------
+// Vault Support
+// -------------------------
+
+// Load CryptoJS dynamically for vault encryption
+async function ensureCryptoJS() {
+	if (typeof CryptoJS !== 'undefined') return true;
+
+	return new Promise((resolve) => {
+		const script = document.createElement('script');
+		script.src = 'https://cdnjs.cloudflare.com/ajax/libs/crypto-js/4.2.0/crypto-js.min.js';
+		script.onload = () => resolve(true);
+		script.onerror = () => {
+			console.warn('uncloseai.js: Failed to load CryptoJS - vault features disabled');
+			resolve(false);
+		};
+		document.head.appendChild(script);
+	});
+}
+
+// Export vault for external use
+export { UncloseVault };
 
 // -------------------------
 // Public API - Main Functions
@@ -112,11 +136,19 @@ window.hideProgressIndicator = FileUpload.hideProgressIndicator;
 window.handleTTSFromElement = UI.handleTTSFromElement;
 window.handleUploadFromElement = UI.handleUploadFromElement;
 window.handleSmartTranslate = UI.handleSmartTranslate;
+window.UncloseVault = UncloseVault;
 
 // Initialize on page load
-window.addEventListener("load", () => {
+window.addEventListener("load", async () => {
 	console.log("uncloseai.js: window.onload event fired.");
 
+	// Load CryptoJS and initialize vault early
+	await ensureCryptoJS();
+	if (UncloseVault.isAvailable()) {
+		const restored = UncloseVault.init();
+		console.log("uncloseai.js: Vault initialized, session restored:", restored);
+	}
+
 	// Check skip init flag first
 	if (window.UNCLOSEAI_SKIP_INIT === true) {
 		console.log(