Adds camelCase support for encrypted field mappings (#342)

Extends encrypted field mappings to include camelCase variants
to support consistency and compatibility with different naming
conventions. Updates reverse mappings for Drizzle ORM to allow
conversion between camelCase and snake_case field names.

Improves integration with systems using mixed naming styles.

src/backend/utils/field-crypto.ts

@@ -17,18 +17,31 @@ class FieldCrypto {
   private static readonly ENCRYPTED_FIELDS = {
     users: new Set([
       "password_hash",
+      "passwordHash",
       "client_secret",
+      "clientSecret",
       "totp_secret",
+      "totpSecret",
       "totp_backup_codes",
+      "totpBackupCodes",
       "oidc_identifier",
+      "oidcIdentifier",
+    ]),
+    ssh_data: new Set([
+      "password",
+      "key",
+      "key_password",
+      "keyPassword",
     ]),
-    ssh_data: new Set(["password", "key", "key_password"]),
     ssh_credentials: new Set([
       "password",
       "private_key",
+      "privateKey",
       "key_password",
+      "keyPassword",
       "key",
       "public_key",
+      "publicKey",
     ]),
   };