feat(frontend): schedule history dialog with rollback, wire ConfigHistorySheet

k-tv-frontend/app/(main)/dashboard/page.tsx

@@ -28,6 +28,7 @@ import {
 } from "./components/import-channel-dialog";
 import { IptvExportDialog } from "./components/iptv-export-dialog";
 import { TranscodeSettingsDialog } from "./components/transcode-settings-dialog";
+import { ScheduleHistoryDialog } from "./components/schedule-history-dialog";
 import type {
   ChannelResponse,
   ProgrammingBlock,
@@ -59,6 +60,7 @@ export default function DashboardPage() {
   const [editChannel, setEditChannel] = useState<ChannelResponse | null>(null);
   const [deleteTarget, setDeleteTarget] = useState<ChannelResponse | null>(null);
   const [scheduleChannel, setScheduleChannel] = useState<ChannelResponse | null>(null);
+  const [scheduleHistoryChannelId, setScheduleHistoryChannelId] = useState<string | null>(null);
 
   const handleCreate = (data: {
     name: string;
@@ -186,6 +188,7 @@ export default function DashboardPage() {
               onExport={() => exportChannel(channel)}
               onMoveUp={() => handleMoveUp(channel.id)}
               onMoveDown={() => handleMoveDown(channel.id)}
+              onScheduleHistory={() => setScheduleHistoryChannelId(channel.id)}
             />
           ))}
         </div>
@@ -246,6 +249,14 @@ export default function DashboardPage() {
         }}
       />
 
+      {scheduleHistoryChannelId && (
+        <ScheduleHistoryDialog
+          channelId={scheduleHistoryChannelId}
+          open={!!scheduleHistoryChannelId}
+          onOpenChange={open => !open && setScheduleHistoryChannelId(null)}
+        />
+      )}
+
       {deleteTarget && (
         <DeleteChannelDialog
           channelName={deleteTarget.name}