app nits

frontend/src/lib/components/apps/components/layout/AppContainer.svelte

@@ -31,7 +31,7 @@
 
 <InputValue {id} input={configuration.noPadding} bind:value={noPadding} />
 
-<div class="border">
+<div>
 	{#if $app.subgrids?.[`${id}-0`]}
 		<SubGridEditor
 			visible={render}

frontend/src/lib/components/apps/components/layout/AppTabs.svelte

@@ -75,7 +75,7 @@
 	$: selected && handleTabSelection()
 
 	$: outputs = $worldStore?.outputsById[id] as {
-		selectedTabIndex: Output<number | null>
+		selectedTabIndex: Output<number>
 	}
 
 	$: selectedIndex = tabs?.indexOf(selected) ?? -1

frontend/src/lib/components/apps/editor/settingsPanel/ComponentPanel.svelte

@@ -80,8 +80,20 @@
 		component?.componentInput?.type === 'template' && $worldStore
 			? buildExtraLib($worldStore?.outputsById ?? {}, component?.id, false)
 			: undefined
+
+	function keydown(event: KeyboardEvent) {
+		switch (event.key) {
+			case 'Delete': {
+				removeGridElement()
+				event.stopPropagation()
+				break
+			}
+		}
+	}
 </script>
 
+<svelte:window on:keydown={keydown} />
+
 {#if component}
 	<div class="flex flex-col min-w-[150px] w-full divide-y">
 		{#if component.componentInput}