fix(webui): use portal file reference tooltips

webui/src/components/MarkdownTextRenderer.tsx

@@ -6,6 +6,7 @@ import remarkGfm from "remark-gfm";
 import remarkMath from "remark-math";
 
 import { CodeBlock } from "@/components/CodeBlock";
+import { FileReferenceChip, isLikelyFilePath } from "@/components/FileReferenceChip";
 import { cn } from "@/lib/utils";
 
 import "katex/dist/katex.min.css";
@@ -44,6 +45,9 @@ export default function MarkdownTextRenderer({
           );
         }
         const raw = String(kids).replace(/\n$/, "");
+        if (isLikelyFilePath(raw)) {
+          return <FileReferenceChip path={raw} />;
+        }
         /** Plain fenced ``` blocks (no language) & wide one-liners: block monospace, not inline pill. */
         const widePlainBlock = raw.includes("\n") || raw.length > 120;
         if (widePlainBlock) {

webui/src/components/ui/tooltip.tsx

@@ -11,15 +11,17 @@ const TooltipContent = React.forwardRef<
   React.ElementRef<typeof TooltipPrimitive.Content>,
   React.ComponentPropsWithoutRef<typeof TooltipPrimitive.Content>
 >(({ className, sideOffset = 4, ...props }, ref) => (
-  <TooltipPrimitive.Content
-    ref={ref}
-    sideOffset={sideOffset}
-    className={cn(
-      "z-50 overflow-hidden rounded-md border bg-popover px-3 py-1.5 text-xs text-popover-foreground shadow-md animate-in fade-in-0 zoom-in-95",
-      className,
-    )}
-    {...props}
-  />
+  <TooltipPrimitive.Portal>
+    <TooltipPrimitive.Content
+      ref={ref}
+      sideOffset={sideOffset}
+      className={cn(
+        "z-50 overflow-hidden rounded-md border bg-popover px-3 py-1.5 text-xs text-popover-foreground shadow-md animate-in fade-in-0 zoom-in-95",
+        className,
+      )}
+      {...props}
+    />
+  </TooltipPrimitive.Portal>
 ));
 TooltipContent.displayName = TooltipPrimitive.Content.displayName;