havre: the hide button, and the chat full width when the list is hidden

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KjyFZEJivqQMhhCyyQau49

ventures/havre/venice.js

@@ -37,7 +37,7 @@ function sent(e, what) {
 }
 function explain(status, said, refused) {
   // Venice's own words for it ("violates the content policy of Venice.ai or the model provider") say no more than this
-  if (refused) return "Venice turned that down as against its content rules" + (/content polic/i.test(said) || !said ? "." : ` ("${said.replace(/[.\s]+$/, "")}").`);
+  if (refused) return "Venice turned that down as against its content rules" + (/content polic/i.test(said) || !said ? "." : ` (“${said.replace(/[.\s]+$/, "")}”).`);
   if (status === 401 || status === 403) return "Venice didn't accept that key. Check it at venice.ai → Settings → API.";
   if (status === 402) return "Venice says the key is out of credit.";
   if (status === 429) return "Venice is rate-limiting this key. Wait a moment and try again.";