Move date/menu to action bar and fix activity label sizing

- Agent comment header now only shows name (+ running badge)
- Date, copy, thumbs up/down, and three-dots menu all in action bar
- Activity event STATUS/ASSIGNEE labels changed from text-[9px] to
  text-xs to match value font size

Co-Authored-By: Paperclip <noreply@paperclip.ing>

ui/src/components/IssueChatThread.tsx

@@ -558,8 +558,7 @@ function IssueChatAssistantMessage() {
         </Avatar>
 
         <div className="min-w-0 flex-1">
-          <div className="mb-1.5 flex items-center justify-between gap-3">
+          <div className="mb-1.5 flex items-center gap-2">
-            <div className="flex items-center gap-2">
             <span className="text-sm font-medium text-foreground">{authorName}</span>
             {isRunning ? (
               <span className="inline-flex items-center gap-1 rounded-full border border-cyan-400/40 bg-cyan-500/10 px-2 py-0.5 text-[10px] font-medium uppercase tracking-[0.14em] text-cyan-700 dark:text-cyan-200">
@@ -568,10 +567,57 @@ function IssueChatAssistantMessage() {
               </span>
             ) : null}
           </div>
-            <div className="flex items-center gap-1 text-xs text-muted-foreground">
+
-              <a href={anchorId ? `#${anchorId}` : undefined} className="hover:text-foreground hover:underline">
+          <div className="space-y-3">
+            <MessagePrimitive.Parts
+              components={{
+                Text: ({ text }) => <IssueChatTextPart text={text} />,
+                ChainOfThought: IssueChatChainOfThought,
+              }}
+            />
+            {message.content.length === 0 && waitingText ? (
+              <div className="rounded-sm bg-accent/20 px-3 py-2 text-sm text-muted-foreground">
+                {waitingText}
+              </div>
+            ) : null}
+            {notices.length > 0 ? (
+              <div className="space-y-2">
+                {notices.map((notice, index) => (
+                  <div
+                    key={`${message.id}:notice:${index}`}
+                    className="rounded-sm border border-border/60 bg-accent/20 px-3 py-2 text-sm text-muted-foreground"
+                  >
+                    {notice}
+                  </div>
+                ))}
+              </div>
+            ) : null}
+          </div>
+
+          <div className="mt-2 flex items-center gap-1">
+            <a
+              href={anchorId ? `#${anchorId}` : undefined}
+              className="mr-1 text-xs text-muted-foreground hover:text-foreground hover:underline"
+            >
               {message.createdAt ? formatShortDate(message.createdAt) : ""}
             </a>
+            <ActionBarPrimitive.Copy
+              copiedDuration={2000}
+              className="group inline-flex h-7 w-7 items-center justify-center rounded-md text-muted-foreground transition-colors hover:bg-accent hover:text-foreground data-[copied=true]:text-foreground"
+              title="Copy message"
+              aria-label="Copy message"
+            >
+              <Copy className="h-3.5 w-3.5 group-data-[copied=true]:hidden" />
+              <Check className="hidden h-3.5 w-3.5 group-data-[copied=true]:block" />
+            </ActionBarPrimitive.Copy>
+            {commentId && onVote ? (
+              <IssueChatFeedbackButtons
+                activeVote={activeVote}
+                sharingPreference={feedbackDataSharingPreference}
+                termsUrl={feedbackTermsUrl ?? null}
+                onVote={handleVote}
+              />
+            ) : null}
             <DropdownMenu>
               <DropdownMenuTrigger asChild>
                 <Button
@@ -606,53 +652,6 @@ function IssueChatAssistantMessage() {
             </DropdownMenu>
           </div>
         </div>
-
-          <div className="space-y-3">
-            <MessagePrimitive.Parts
-              components={{
-                Text: ({ text }) => <IssueChatTextPart text={text} />,
-                ChainOfThought: IssueChatChainOfThought,
-              }}
-            />
-            {message.content.length === 0 && waitingText ? (
-              <div className="rounded-sm bg-accent/20 px-3 py-2 text-sm text-muted-foreground">
-                {waitingText}
-              </div>
-            ) : null}
-            {notices.length > 0 ? (
-              <div className="space-y-2">
-                {notices.map((notice, index) => (
-                  <div
-                    key={`${message.id}:notice:${index}`}
-                    className="rounded-sm border border-border/60 bg-accent/20 px-3 py-2 text-sm text-muted-foreground"
-                  >
-                    {notice}
-                  </div>
-                ))}
-              </div>
-            ) : null}
-          </div>
-
-          <div className="mt-2 flex items-center gap-1">
-            <ActionBarPrimitive.Copy
-              copiedDuration={2000}
-              className="group inline-flex h-7 w-7 items-center justify-center rounded-md text-muted-foreground transition-colors hover:bg-accent hover:text-foreground data-[copied=true]:text-foreground"
-              title="Copy message"
-              aria-label="Copy message"
-            >
-              <Copy className="h-3.5 w-3.5 group-data-[copied=true]:hidden" />
-              <Check className="hidden h-3.5 w-3.5 group-data-[copied=true]:block" />
-            </ActionBarPrimitive.Copy>
-            {commentId && onVote ? (
-              <IssueChatFeedbackButtons
-                activeVote={activeVote}
-                sharingPreference={feedbackDataSharingPreference}
-                termsUrl={feedbackTermsUrl ?? null}
-                onVote={handleVote}
-              />
-            ) : null}
-          </div>
-        </div>
       </div>
     </MessagePrimitive.Root>
   );
@@ -920,7 +919,7 @@ function IssueChatSystemMessage() {
 
         {statusChange ? (
           <div className={cn("flex flex-wrap items-center gap-1.5 text-xs", isCurrentUser && "justify-end")}>
-            <span className="text-[9px] font-medium uppercase tracking-[0.14em] text-muted-foreground">
+            <span className="text-xs font-medium uppercase tracking-wider text-muted-foreground">
               Status
             </span>
             <span className="text-muted-foreground">{humanizeValue(statusChange.from)}</span>
@@ -931,7 +930,7 @@ function IssueChatSystemMessage() {
 
         {assigneeChange ? (
           <div className={cn("flex flex-wrap items-center gap-1.5 text-xs", isCurrentUser && "justify-end")}>
-            <span className="text-[9px] font-medium uppercase tracking-[0.14em] text-muted-foreground">
+            <span className="text-xs font-medium uppercase tracking-wider text-muted-foreground">
               Assignee
             </span>
             <span className="text-muted-foreground">