Fix Greptile workspace review issues

ui/src/pages/ExecutionWorkspaceDetail.tsx

@@ -4,6 +4,16 @@ import { ExternalLink } from "lucide-react";
 import { executionWorkspacesApi } from "../api/execution-workspaces";
 import { queryKeys } from "../lib/queryKeys";
 
+function isSafeExternalUrl(value: string | null | undefined) {
+  if (!value) return false;
+  try {
+    const parsed = new URL(value);
+    return parsed.protocol === "http:" || parsed.protocol === "https:";
+  } catch {
+    return false;
+  }
+}
+
 function DetailRow({ label, children }: { label: string; children: React.ReactNode }) {
   return (
     <div className="flex items-start gap-3 py-1.5">
@@ -52,11 +62,13 @@ export function ExecutionWorkspaceDetail() {
           <span className="break-all font-mono text-xs">{workspace.providerRef ?? "None"}</span>
         </DetailRow>
         <DetailRow label="Repo URL">
-          {workspace.repoUrl ? (
+          {workspace.repoUrl && isSafeExternalUrl(workspace.repoUrl) ? (
             <a href={workspace.repoUrl} target="_blank" rel="noreferrer" className="inline-flex items-center gap-1 hover:underline">
               {workspace.repoUrl}
               <ExternalLink className="h-3 w-3" />
             </a>
+          ) : workspace.repoUrl ? (
+            <span className="break-all font-mono text-xs">{workspace.repoUrl}</span>
           ) : "None"}
         </DetailRow>
         <DetailRow label="Opened">{new Date(workspace.openedAt).toLocaleString()}</DetailRow>