delete account ui functionality

src/components/TopBar/Settings/SignOut.vue

@@ -1,10 +1,12 @@
 <script setup lang="ts">
 import { preferredNotesSource } from '@/composables/useSettings'
 import { signOut as firebaseSignOut } from '@/composables/useFirebase'
+import { clearEncryptionKeys } from '@/composables/useEncryption'
 
 const signOut = async (close: () => Promise<boolean>) => {
   await firebaseSignOut()
   preferredNotesSource.value = null
+  clearEncryptionKeys()
   close()
 }
 </script>

src/composables/useEncryption.ts

@@ -147,3 +147,8 @@ export const enableEncryption = async (passphrase: string) => {
   setClientKey(passphrase)
   syncNotesToFirebase(baseNotes.value)
 }
+
+export const clearEncryptionKeys = () => {
+  encryptionKey.value = undefined
+  encryptedEncryptionKey.value = undefined
+}