diff --git a/src/admin/hooks/usePlanWork.ts b/src/admin/hooks/usePlanWork.ts
index 1c2b3a1..659c4a0 100644
--- a/src/admin/hooks/usePlanWork.ts
+++ b/src/admin/hooks/usePlanWork.ts
@@ -466,23 +466,27 @@ export function usePlanWork({ initialDate, canEdit }: UsePlanWorkArgs) {
 
   // Roll back an optimistic patch on mutation error. Called from
   // PlanWork's mutation wrappers via `rollbackMutation(mutation, key)`.
-  function rollbackMutation(
-    mutation: { _rolled?: Record<string, ResolvedCell | null> | null },
-    userId: number,
-  ) {
-    if (!mutation._rolled) return;
+  // `mutation` is a TanStack mutation result with a `_rolled` snapshot stashed
+  // on it (see the `(createEntry as any)._rolled = …` writes above). Typed as
+  // `unknown` + an explicit cast so callers can pass the mutation object
+  // directly without the "weak type" mismatch a `{ _rolled? }` param causes.
+  function rollbackMutation(mutation: unknown, userId: number) {
+    const stash = mutation as {
+      _rolled?: Record<string, ResolvedCell | null> | null;
+    };
+    if (!stash._rolled) return;
     const prev = qc.getQueryData<GridData>(currentGridKey as any);
     if (!prev) return;
     const userPrev = prev.cells[userId] ?? {};
     const userNext = { ...userPrev };
-    for (const [date, cell] of Object.entries(mutation._rolled)) {
+    for (const [date, cell] of Object.entries(stash._rolled)) {
       userNext[date] = cell;
     }
     qc.setQueryData(currentGridKey, {
       ...prev,
       cells: { ...prev.cells, [userId]: userNext },
     });
-    mutation._rolled = null;
+    stash._rolled = null;
   }
 
   return {
diff --git a/src/admin/pages/AttendanceAdmin.tsx b/src/admin/pages/AttendanceAdmin.tsx
index 7fe6414..e2fd7d0 100644
--- a/src/admin/pages/AttendanceAdmin.tsx
+++ b/src/admin/pages/AttendanceAdmin.tsx
@@ -21,6 +21,9 @@ interface UserTotalData {
   unpaid_hours: number;
   fund: number | null;
   worked_hours: number;
+  // Raw worked hours incl. sub-day remainders (set by computeUserTotals in
+  // useAttendanceAdmin); used for the Fond "used" calculation below.
+  worked_hours_raw?: number;
   covered: number;
   missing: number;
   overtime: number;