feat(v1.3.0): ephemeral session-key encryption + cleanup

- Update version to 1.3.0
- Remove debug console logs
- Session-key encryption working in production
- Mnemonic auto-clears after QR generation
- Lock/Clear functionality verified

package.json

@@ -1,7 +1,7 @@
 {
   "name": "seedpgp-web",
   "private": true,
-  "version": "1.1.0",
+  "version": "1.3.0",
   "type": "module",
   "scripts": {
     "dev": "vite",