fix(fetch-requests): resolve FK displayFormat in custom detail page

- Import useAppContext and applyDisplayFormat for target resource resolution
- Fix detail field rendering to use FK target resource displayFormat
- Fix title to resolve FK objects via displayFormat instead of non-existent account_name
- Move displayTitle useMemo before early returns to avoid hook ordering violation

src/FetchRequest/FetchRequestDetail.tsx

@@ -19,7 +19,7 @@ import WarningAmberIcon from "@mui/icons-material/WarningAmber";
 import PlayArrowIcon from "@mui/icons-material/PlayArrow";
 import RemoveCircleOutlineIcon from "@mui/icons-material/RemoveCircleOutline";
 import FiberManualRecordIcon from "@mui/icons-material/FiberManualRecord";
-import { useResource, useItemSse, DetailFieldRenderer } from "../../react-openapi";
+import { useResource, useItemSse, useAppContext, DetailFieldRenderer, applyDisplayFormat } from "../../react-openapi";
 import { useQuery } from "@tanstack/react-query";
 import { RETRY_MAX, formatApiError } from "../features/fetch-requests";
 import type { FetchRequestStatus, SSEEvent, ProgressMessage } from "../features/fetch-requests";
@@ -71,6 +71,7 @@ export default function FetchRequestDetail() {
   const { id } = useParams<{ id: string }>();
   const navigate = useNavigate();
   const { get, patch, resource } = useResource("fetch-requests");
+  const { resources: allResources } = useAppContext();
   const [stepStats, setStepStats] = useState<Record<string, number>>({});
   const [liveParsedCount, setLiveParsedCount] = useState<number | undefined>(undefined);
   const [retrying, setRetrying] = useState(false);
@@ -158,6 +159,29 @@ export default function FetchRequestDetail() {
     }
   };
 
+  const req = fetchRequest as any;
+  const retryCount = req?.retry_count ?? 0;
+  const isRetryExhausted = retryCount >= RETRY_MAX;
+  const status = req?.status as FetchRequestStatus | undefined;
+  const detailFields = (resource?.orderedFields ?? []).filter(
+    (f) => f.name !== "source",
+  );
+
+  const displayTitle = useMemo(() => {
+    if (!resource || !req) return "";
+    const resolved = Object.fromEntries(
+      resource.orderedFields.map((field) => {
+        const value = req[field.name];
+        if (field.fk && typeof value === "object" && value != null) {
+          const target = allResources.find((r) => r.name === field.fk!.resource);
+          if (target) return [field.name, applyDisplayFormat(value, target.displayFormat)];
+        }
+        return [field.name, value];
+      }),
+    );
+    return applyDisplayFormat(resolved, resource.displayFormat);
+  }, [resource, req, allResources]);
+
   if (isLoading) {
     return (
       <Box sx={{ display: "flex", justifyContent: "center", p: 8 }}>
@@ -177,15 +201,6 @@ export default function FetchRequestDetail() {
     );
   }
 
-  const req = fetchRequest as any;
-  const retryCount = req.retry_count ?? 0;
-  const isRetryExhausted = retryCount >= RETRY_MAX;
-  const status = req.status as FetchRequestStatus;
-
-  const detailFields = (resource?.orderedFields ?? []).filter(
-    (f) => f.name !== "source",
-  );
-
   return (
     <Container sx={{ mt: 4, mb: 4 }}>
       <Button startIcon={<ArrowBackIcon />} onClick={() => navigate("/fetch-requests")} sx={{ mb: 2 }}>
@@ -199,7 +214,7 @@ export default function FetchRequestDetail() {
             label={status.replace(/_/g, " ")}
             color={statusColors[status]}
           />
-          <Typography variant="h6" fontWeight={600}>{req.account_name}</Typography>
+          <Typography variant="h6" fontWeight={600}>{displayTitle}</Typography>
           <Chip
             label={"path" in (req.source ?? {}) ? "File" : "Email"}
             size="small"
@@ -209,14 +224,22 @@ export default function FetchRequestDetail() {
         </Box>
 
         <Box sx={{ display: "flex", gap: 4, flexWrap: "wrap", mb: 2 }}>
-          {detailFields.map((field) => (
+          {detailFields.map((field) => {
+            const value = req[field.name];
+            let fmt = resource?.displayFormat;
+            if (field.fk && typeof value === "object" && value != null) {
+              const target = allResources.find((r) => r.name === field.fk!.resource);
+              if (target) fmt = target.displayFormat;
+            }
+            return (
               <DetailFieldRenderer
                 key={field.name}
                 field={field}
-              value={req[field.name]}
-              displayFormat={resource?.displayFormat}
+                value={value}
+                displayFormat={fmt}
               />
-          ))}
+            );
+          })}
         </Box>
 
         <Box sx={{ display: "flex", alignItems: "center", gap: 2 }}>