fix(team-editor) : persist multiple apply selections

components/admin/guide-section-editor.tsx

@@ -190,6 +190,8 @@ const teamMemberApplyOptions = [
   ["refinement", "R"],
   ["damage", "Damage"],
 ] as const satisfies readonly (readonly [TeamMemberApplyField, string])[];
+const multipleApplyStorageKey = (guideId: string) =>
+  `buzz-sheet:team-multiple-apply:${guideId}`;
 type Guide = {
   id: string;
   characterKey: string;
@@ -2244,6 +2246,7 @@ function TeamEditor({
   const [presetsHydrated, setPresetsHydrated] = useState(false);
   const [presetsGuideId, setPresetsGuideId] = useState<string | null>(null);
   const [applyFields, setApplyFields] = useState<TeamApplySelection[]>([]);
+  const [multipleApplyGuideId, setMultipleApplyGuideId] = useState<string | null>(null);
   const [searchQuery, setSearchQuery] = useState("");
   const [searchTarget, setSearchTarget] = useState<TeamSearchTarget>("all");
   const filteredTeams = useMemo(() => {
@@ -2310,6 +2313,49 @@ function TeamEditor({
     }, 0);
     return () => window.clearTimeout(timer);
   }, [guide.id]);
+  useEffect(() => {
+    const timer = window.setTimeout(() => {
+      try {
+        const stored = JSON.parse(
+          window.localStorage.getItem(multipleApplyStorageKey(guide.id)) ?? "null",
+        ) as { selectedTeamIds?: unknown; applyFields?: unknown } | null;
+        const teamIds = new Set(initial.teams.map((team) => team.id));
+        setSelectedTeamIds(new Set(
+          Array.isArray(stored?.selectedTeamIds)
+            ? stored.selectedTeamIds.filter(
+                (id): id is string => typeof id === "string" && teamIds.has(id),
+              )
+            : [],
+        ));
+        setApplyFields(
+          Array.isArray(stored?.applyFields)
+            ? stored.applyFields.filter(
+                (field): field is TeamApplySelection => typeof field === "string",
+              )
+            : [],
+        );
+      } catch {
+        setSelectedTeamIds(new Set());
+        setApplyFields([]);
+      }
+      setMultipleApplyGuideId(guide.id);
+    }, 0);
+    return () => window.clearTimeout(timer);
+  }, [guide.id, initial.teams]);
+  useEffect(() => {
+    if (multipleApplyGuideId !== guide.id) return;
+    try {
+      window.localStorage.setItem(
+        multipleApplyStorageKey(guide.id),
+        JSON.stringify({
+          selectedTeamIds: [...selectedTeamIds],
+          applyFields,
+        }),
+      );
+    } catch {
+      // Browser storage is optional; multiple apply remains usable without it.
+    }
+  }, [applyFields, guide.id, multipleApplyGuideId, selectedTeamIds]);
   useEffect(() => {
     if (!presetsHydrated || presetsGuideId !== guide.id) return;
     try {