feat: add project-aware agent workspace

src/features/workbench/components/investigation-expand-card.tsx

@@ -9,7 +9,7 @@ import { cn } from "@/shared/ui/cn";
 /** Report-specific progressive disclosure. The source stays mounted while reading. */
 export function InvestigationExpandCard({
   title, label = title, preview, children, wide = false, onOpen, contentRef,
-  triggerLabel = `展开${title}`, className, revision, disabled = false, reuseContent = false
+  triggerLabel = `展开${title}`, className, revision, disabled = false, reuseContent = false, headingAccessory
 }: {
   title: string;
   label?: string;
@@ -25,6 +25,7 @@ export function InvestigationExpandCard({
   disabled?: boolean;
   /** Move one live content host between slots, preserving expensive renderers. */
   reuseContent?: boolean;
+  headingAccessory?: ReactNode;
 }) {
   const id = useId();
   const triggerRef = useRef<HTMLButtonElement>(null);
@@ -77,7 +78,10 @@ export function InvestigationExpandCard({
         style={{ borderRadius: 12 }}
       >
         <div className="investigation-card-heading">
-          <h3 className="text-sm font-semibold text-[var(--ink)]">{title}</h3>
+          <div className="flex min-w-0 flex-wrap items-center gap-2">
+            <h3 className="text-sm font-semibold text-[var(--ink)]">{title}</h3>
+            {headingAccessory}
+          </div>
           <Dialog.Trigger asChild>
             <Button ref={triggerRef} variant="ghost" size="icon-sm" aria-label={triggerLabel} disabled={disabled}
               title={triggerLabel} onClick={(event) => setKeyboard(event.detail === 0)}>