feat(auth): implement user authentication system

backend/node_modules/zod/v4/classic/coerce.js

@@ -0,0 +1,17 @@
+import * as core from "../core/index.js";
+import * as schemas from "./schemas.js";
+export function string(params) {
+    return core._coercedString(schemas.ZodString, params);
+}
+export function number(params) {
+    return core._coercedNumber(schemas.ZodNumber, params);
+}
+export function boolean(params) {
+    return core._coercedBoolean(schemas.ZodBoolean, params);
+}
+export function bigint(params) {
+    return core._coercedBigint(schemas.ZodBigInt, params);
+}
+export function date(params) {
+    return core._coercedDate(schemas.ZodDate, params);
+}