fix: codex review — compact across midnight, typed msg badges, URL punct

- Don't compact after date separator (show full header on new day)
- Don't compact typed messages (result/error/plan keep their badges)
- URL regex stops before trailing ),. so links don't grab punctuation

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ui/colony/src/components/MessageItem.tsx

@@ -35,7 +35,8 @@ function timeAgo(dateStr: string): string {
 
 function renderContent(text: string) {
   // Split on @mentions and URLs
-  const parts = text.split(/((?:https?:\/\/)[^\s]+|@[\w-]+)/g);
+  // URL regex: stop before trailing punctuation like ),. etc
+  const parts = text.split(/((?:https?:\/\/)[^\s),.\]}>]+|@[\w-]+)/g);
   return parts.map((part, i) => {
     if (part.startsWith("@")) {
       return (