feat(auth): allow owner to force OTP-only login per user

Team menu «ورود با کد» blocks password login with a clear message and switches the login screen to OTP.

apps/api/src/users/users.service.ts

@@ -49,6 +49,7 @@ type MembershipRow = {
   priorArchiveEnabled?: boolean;
   logoutTime?: string | null;
   blockLoginAfterLogout?: boolean;
+  loginOtpOnly?: boolean;
   createdAt: Date;
   orgRole: { id: string; name: string; color: string; dataAccessPolicy?: unknown } | null;
   user: {
@@ -454,6 +455,32 @@ export class UsersService {
     return this.dtoOf(organizationId, targetId);
   }
 
+  async updateLoginOtpOnly(
+    organizationId: string,
+    actor: { userId: string; role: UserRole },
+    targetId: string,
+    loginOtpOnly: boolean,
+  ): Promise<OrgUserDto> {
+    if (actor.role !== 'owner' && actor.role !== 'admin') {
+      throw new ForbiddenException('فقط مالک یا مدیر می‌تواند شیوهٔ ورود را تغییر دهد');
+    }
+    const target = await this.memberships.findUserInOrgById(organizationId, targetId);
+    if (target.role === 'owner') {
+      throw new BadRequestException('برای مالک نمی‌توان ورود فقط با کد را فعال کرد');
+    }
+    if (loginOtpOnly) {
+      const mobile = target.user.mobile?.trim();
+      if (!mobile) {
+        throw new BadRequestException('برای ورود با کد، کاربر باید موبایل داشته باشد');
+      }
+    }
+    await this.prisma.membership.update({
+      where: { id: target.id },
+      data: { loginOtpOnly },
+    });
+    return this.dtoOf(organizationId, targetId);
+  }
+
   async updateStatus(
     organizationId: string,
     actor: { userId: string; role: UserRole },
@@ -589,6 +616,7 @@ export class UsersService {
       logoutTime: row.role === 'owner' ? null : row.logoutTime ?? null,
       blockLoginAfterLogout:
         row.role !== 'owner' && Boolean(row.logoutTime) && Boolean(row.blockLoginAfterLogout),
+      loginOtpOnly: row.role === 'owner' ? false : Boolean(row.loginOtpOnly),
       createdAt: row.createdAt.toISOString(),
     };
   }