feat: expand intelligent investigation workspace

src/features/agent/components/agent-history-panel.tsx

@@ -7,6 +7,7 @@ import { DropdownMenu, DropdownMenuContent, DropdownMenuItem, DropdownMenuRadioG
 import { Separator } from "@/shared/ui/separator";
 import { cn } from "@/shared/ui/cn";
 import { StatusBadge } from "@/shared/ui/status";
+import { copySelectedText } from "@/shared/ai-elements/paragraph-copy";
 import type { AgentChatSessionSummary, AgentTopic } from "../api/client";
 
 type Props = {
@@ -77,7 +78,7 @@ export function AgentHistoryPanel({ open, onOpenChange, triggerRef, scopeLabel,
   };
   let previousGroup = "";
   return <Dialog open={open} onOpenChange={onOpenChange}>
-    <DialogContent showCloseButton={false} data-agent-theme="chat"
+    <DialogContent onCopy={copySelectedText} showCloseButton={false} data-agent-theme="chat"
       overlayClassName="agent-history-overlay motion-reduce:animate-none"
       className="agent-history-dialog flex flex-col gap-0 overflow-hidden bg-card p-0 text-foreground motion-reduce:animate-none"
       style={viewport ? { "--history-viewport-height": `${viewport.height}px`, "--history-viewport-top": `${viewport.top}px` } as CSSProperties : undefined}