Fix: cast DB row to AuthTokenPayload in findUser\n\nCast database RowDataPacket to AuthTokenPayload so generateToken receives the correct type.\n\nCo-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

shared/src/error/errorcodes.enum.ts

@@ -0,0 +1,4 @@
+export enum ERROR_CODE {
+    WRONG_USER_NAME_PASSWORD = 'EU001',
+    UNEXPECTED_FORMAT = 'ES001',
+}