style(ui): padronizar tipografia — font-medium para font-semibold

Padronização de peso tipográfico em títulos, rótulos de seção,
nomes de entidades e valores monetários em toda a interface.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/features/transactions/components/attachments/attachment-item.tsx

@@ -54,6 +54,7 @@ function AttachmentPreview({
 		<Dialog open={open} onOpenChange={onOpenChange}>
 			<DialogContent
 				showCloseButton={false}
+				aria-describedby={undefined}
 				className="flex h-[92vh] w-[min(96vw,1400px)] max-w-none flex-col gap-0 overflow-hidden p-0 sm:p-0"
 			>
 				<DialogHeader className="flex-row items-center justify-between gap-3 border-b px-4 py-3 sm:px-5">

src/features/transactions/components/attachments/attachment-section.tsx

@@ -44,8 +44,10 @@ export function AttachmentSection({
 	} = useTransactionAttachments(transactionId);
 
 	useEffect(() => {
-		onLoaded?.(items.length);
-	}, [items.length, onLoaded]);
+		if (!isLoading) {
+			onLoaded?.(items.length);
+		}
+	}, [items.length, isLoading, onLoaded]);
 
 	const invalidateAttachments = () => {
 		void queryClient.invalidateQueries({