fix: add email validation to profile form to prevent empty values - Add email format and required validation to profile form schema - Add email validation to API schema and service layer - Improve error handling in user update mutation - Fixes issue where users could save empty email causing sign-in failures -#2613

packages/server/src/db/schema/user.ts

@@ -322,6 +322,7 @@ export const apiUpdateWebServerMonitoring = z.object({
 });
 
 export const apiUpdateUser = createSchema.partial().extend({
+	email: z.string().email("Please enter a valid email address").min(1, "Email is required").optional(),
 	password: z.string().optional(),
 	currentPassword: z.string().optional(),
 	name: z.string().optional(),