fix(client): soften empty state typography and copy

Drop the heavy 600-weight title in favour of regular-weight secondary text, and reword "Nothing here" to "Nothing to show yet".

client/src/Components/design-elements/EmptyState.tsx

@@ -52,9 +52,9 @@ export const EmptyState = ({
 				<Stack sx={{ flex: 1 }}>
 					<Typography
 						sx={{
-							fontSize: 15,
-							fontWeight: 600,
-							color: theme.palette.text.primary,
+							fontSize: 14,
+							fontWeight: 400,
+							color: theme.palette.text.secondary,
 						}}
 					>
 						{title}
@@ -91,9 +91,9 @@ export const EmptyState = ({
 				sx={{
 					mt: theme.spacing(LAYOUT.MD),
 					mb: theme.spacing(LAYOUT.XS),
-					fontSize: 16,
-					fontWeight: 600,
-					color: theme.palette.text.primary,
+					fontSize: 14,
+					fontWeight: 400,
+					color: theme.palette.text.secondary,
 				}}
 			>
 				{title}

client/src/locales/en.json

@@ -105,7 +105,7 @@
 			}
 		},
 		"table": {
-			"empty": "Nothing here",
+			"empty": "Nothing to show yet",
 			"headers": {
 				"actions": "Actions",
 				"dateTime": "Date & time",