fix data flow issues

apps/website/lib/command-models/auth/LoginCommandModel.ts

@@ -0,0 +1,66 @@
+export interface LoginFormData {
+  email: string;
+  password: string;
+}
+
+export interface LoginValidationErrors {
+  email?: string;
+  password?: string;
+}
+
+/**
+ * LoginCommandModel
+ *
+ * Encapsulates login form state, client-side validation, and
+ * prepares data for submission to the AuthService.
+ */
+export class LoginCommandModel {
+  private _email: string;
+  private _password: string;
+
+  constructor(initial: LoginFormData = { email: '', password: '' }) {
+    this._email = initial.email;
+    this._password = initial.password;
+  }
+
+  get email(): string {
+    return this._email;
+  }
+
+  set email(value: string) {
+    this._email = value;
+  }
+
+  get password(): string {
+    return this._password;
+  }
+
+  set password(value: string) {
+    this._password = value;
+  }
+
+  /** Basic client-side validation for login form */
+  validate(): LoginValidationErrors {
+    const errors: LoginValidationErrors = {};
+
+    if (!this._email.trim()) {
+      errors.email = 'Email is required';
+    } else if (!/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(this._email)) {
+      errors.email = 'Invalid email format';
+    }
+
+    if (!this._password) {
+      errors.password = 'Password is required';
+    }
+
+    return errors;
+  }
+
+  /** Convert to API LoginParams DTO */
+  toRequestDto(): { email: string; password: string } {
+    return {
+      email: this._email,
+      password: this._password,
+    };
+  }
+}