Merged in feat/LOY-158-signup-with-existing-email-error-handling (pull request #1441)

Feat/LOY-158 signup with existing email error handling

* feat(LOY-158): Add handling for email conflict during signup

- Implement specific error handling for email conflict in signup form
- Add localized error message for existing email accounts across language dictionaries
- Introduce new error type `conflictError` in trpc error handling

* fix(LOY-158): revert translation changes

* fix(LOY-158): Correct Finnish translation for cancellation message


Approved-by: Christian Andolf

apps/scandic-web/server/errors/trpc.ts

@@ -16,6 +16,14 @@ export function forbiddenError(cause?: unknown) {
   })
 }
 
+export function conflictError(cause?: unknown) {
+  return new TRPCError({
+    code: "CONFLICT",
+    message: `Conflict`,
+    cause,
+  })
+}
+
 export function badRequestError(cause?: unknown) {
   return new TRPCError({
     code: "BAD_REQUEST",
@@ -41,7 +49,7 @@ export function internalServerError(cause?: unknown) {
 }
 
 export const SESSION_EXPIRED = "SESSION_EXPIRED"
-export class SessionExpiredError extends Error { }
+export class SessionExpiredError extends Error {}
 export function sessionExpiredError() {
   return new TRPCError({
     code: "UNAUTHORIZED",
@@ -51,7 +59,7 @@ export function sessionExpiredError() {
 }
 
 export const PUBLIC_UNAUTHORIZED = "PUBLIC_UNAUTHORIZED"
-export class PublicUnauthorizedError extends Error { }
+export class PublicUnauthorizedError extends Error {}
 export function publicUnauthorizedError() {
   return new TRPCError({
     code: "UNAUTHORIZED",
@@ -68,6 +76,8 @@ export function serverErrorByStatus(status: number, cause?: unknown) {
       return forbiddenError(cause)
     case 404:
       return notFound(cause)
+    case 409:
+      return conflictError(cause)
     case 500:
     default:
       return internalServerError(cause)