correction bug nouvelle conversation

backend/web/src/routes/(authenticated)/[space]/(chat)/[conversation]/+page.svelte

@@ -9,7 +9,11 @@
 
 	let prompt = $state("")
 	let { data }: PageProps = $props();
-	let messages = $state(untrack(()=>data.chatWithMessage.messages))
+	let messages = $state(untrack(()=>{
+	    let msgs = data.chatWithMessage.messages
+		if (msgs==null) return []
+		return msgs
+	}))
 	let waiting = $state(false)
 
     onMount(async ()=>{

backend/web/src/routes/layout.css

@@ -333,6 +333,6 @@ h2 {
 	@apply whitespace-pre-line;
 
 	&.reasoning {
-		@apply text-white/50;
+		@apply text-black/50 dark:text-white/50;
 	}
 }