chore: apply code formatting and linting

- format long import statements with consistent line wrapping
- apply consistent indentation across client and server modules
- remove generated tsconfig.tsbuildinfo file

client/src/lib/toast-events.ts

@@ -6,6 +6,7 @@ export interface ApiErrorToastDetail {
 
 export function emitApiErrorToast(message: string): void {
   if (typeof window === 'undefined') return;
+
   window.dispatchEvent(
     new CustomEvent<ApiErrorToastDetail>(API_ERROR_TOAST_EVENT, {
       detail: { message },
@@ -13,17 +14,17 @@ export function emitApiErrorToast(message: string): void {
   );
 }
 
-export function subscribeApiErrorToasts(
-  handler: (message: string) => void,
-): () => void {
+export function subscribeApiErrorToasts(handler: (message: string) => void): () => void {
   if (typeof window === 'undefined') return () => {};
+
   const listener = (event: Event) => {
     const custom = event as CustomEvent<ApiErrorToastDetail>;
     const message = custom.detail?.message;
     if (message) handler(message);
   };
-  window.addEventListener(API_ERROR_TOAST_EVENT, listener as EventListener);
+
+  window.addEventListener(API_ERROR_TOAST_EVENT, listener);
   return () => {
-    window.removeEventListener(API_ERROR_TOAST_EVENT, listener as EventListener);
+    window.removeEventListener(API_ERROR_TOAST_EVENT, listener);
   };
 }