refactor: fully working E2EE

small issue to fix. when full response is received it replaces the text with the text from the DB. and then the decryption is not yet implement.

api/models/schema/userSchema.js

@@ -27,10 +27,10 @@ const { SystemRoles } = require('librechat-data-provider');
  * @property {Array} [plugins=[]] - List of plugins used by the user
  * @property {Array.<MongoSession>} [refreshToken] - List of sessions with refresh tokens
  * @property {Date} [expiresAt] - Optional expiration date of the file
- * @property {string} [encryptionPublicKey] - The user's public key for E2EE (client-generated)
- * @property {string} [encryptedPrivateKey] - The user's private key encrypted with a user-defined passphrase
- * @property {string} [encryptionSalt] - The salt used for PBKDF2 during encryption
- * @property {string} [encryptionIV] - The initialization vector used for encryption (AES-GCM)
+ * @property {string} [encryptionPublicKey] - The user's encryption public key
+ * @property {string} [encryptedPrivateKey] - The user's encrypted private key
+ * @property {string} [encryptionSalt] - The salt used for key derivation (e.g., PBKDF2)
+ * @property {string} [encryptionIV] - The IV used for encrypting the private key
  * @property {Date} [createdAt] - Date when the user was created (added by timestamps)
  * @property {Date} [updatedAt] - Date when the user was last updated (added by timestamps)
  */
@@ -136,26 +136,21 @@ const userSchema = mongoose.Schema(
       type: Boolean,
       default: false,
     },
-    // --- New Fields for E2EE ---
     encryptionPublicKey: {
       type: String,
-      required: false,
-      // Provided by the client after key generation.
+      default: null,
     },
     encryptedPrivateKey: {
       type: String,
-      required: false,
-      // The private key encrypted on the client with the user’s encryption passphrase.
+      default: null,
     },
     encryptionSalt: {
       type: String,
-      required: false,
-      // Salt used for PBKDF2 when encrypting the private key.
+      default: null,
     },
     encryptionIV: {
       type: String,
-      required: false,
-      // IV used for AES-GCM encryption of the private key.
+      default: null,
     },
   },