Prep for the RC4 release of the desktop app

Author: Keavon

editor/src/messages/portfolio/portfolio_message_handler.rs

@@ -1057,7 +1057,7 @@ impl MessageHandler<PortfolioMessage, PortfolioMessageContext<'_>> for Portfolio
 			}
 			PortfolioMessage::RequestStatusBarInfoLayout => {
 				#[cfg(not(target_family = "wasm"))]
-				let widgets = vec![TextLabel::new("Graphite 1.0.0-RC3").disabled(true).widget_instance()]; // TODO: After the RCs, call this "Graphite (beta) x.y.z"
+				let widgets = vec![TextLabel::new("Graphite 1.0.0-RC4").disabled(true).widget_instance()]; // TODO: After the RCs, call this "Graphite (beta) x.y.z"
 				#[cfg(target_family = "wasm")]
 				let widgets = vec![];
 

frontend/src/components/panels/Welcome.svelte

@@ -52,7 +52,7 @@
 	<LayoutCol class="bottom-message">
 		<TextLabel italic={true} disabled={true}>
 			{#if isPlatformNative()}
-				You are testing Release Candidate 3 of the 1.0 desktop release. Please regularly check Discord for the next testing build and report issues you encounter.
+				You are testing Release Candidate 4 of the 1.0 desktop release. Please regularly check Discord for the next testing build and report issues you encounter.
 			{/if}
 		</TextLabel>
 	</LayoutCol>

frontend/src/components/window/MainWindow.svelte

@@ -31,7 +31,7 @@
 	{#if $tooltip.visible}
 		<Tooltip />
 	{/if}
-	{#if isPlatformNative() && new Date() > new Date("2026-03-15")}
+	{#if isPlatformNative() && new Date() > new Date("2026-04-30")}
 		<LayoutCol class="release-candidate-expiry">
 			<TextLabel>
 				<p>