fix(notifications): a notice keeps what to say and says it in the reader's language when shown

frontend/src/modules/feed/ChannelPage.tsx

@@ -42,7 +42,7 @@ import {
 } from "../../lib/channelPageUrlState";
 import { LS } from "../../lib/storage";
 import { useConfirm } from "../../components/ui/confirmContext";
-import { notify } from "../../lib/notifications";
+import { msg, notify } from "../../lib/notifications";
 import { notifyYouTubeActionError } from "../../lib/youtubeErrors";
 import { notifyActionError } from "../../lib/actionErrors";
 import {
@@ -152,11 +152,11 @@ export default function ChannelPage({
           })
           // Both the automatic first-visit explore and "load more" used to fail in silence: an empty
           // channel page that looked like a channel with no videos.
-          .catch((err: unknown) => notifyActionError(err, t("errors.writeFailed.exploreChannel")))
+          .catch((err: unknown) => notifyActionError(err, msg("errors.writeFailed.exploreChannel")))
           .finally(() => setExploring(false))
       );
     },
-    [channelId, qc, t],
+    [channelId, qc],
   );
 
   // First visit of an un-subscribed channel → ingest its recent uploads. Skipped when videos are
@@ -201,16 +201,16 @@ export default function ChannelPage({
     mutationFn: () => api.subscribeChannel(channelId),
     onSuccess: () => {
       invalidateSubscription(qc, channelId);
-      notify({ level: "info", message: t("channel.subscribed", { name: ch?.title ?? "" }) });
+      notify({ level: "info", message: msg("channel.subscribed", { name: ch?.title ?? "" }) });
     },
     // A 403 (missing write scope) otherwise fails silently on the channel page (no wizard handle
     // here, so no Connect button — but the user at least sees why it didn't work).
-    onError: (err) => notifyYouTubeActionError(err, t("channels.discovery.subscribeFailed")),
+    onError: (err) => notifyYouTubeActionError(err, msg("channels.discovery.subscribeFailed")),
   });
   const unsubscribe = useMutation({
     mutationFn: () => api.unsubscribeChannel(channelId),
     onSuccess: () => invalidateSubscription(qc, channelId),
-    onError: (err) => notifyYouTubeActionError(err, t("channels.notify.unsubscribeFailed")),
+    onError: (err) => notifyYouTubeActionError(err, msg("channels.notify.unsubscribeFailed")),
   });
   // "Get full history": the catalog only holds the recent-backfill/RSS subset of a channel's
   // uploads (video_count is YouTube's raw total), so flipping deep_requested queues the full
@@ -222,9 +222,9 @@ export default function ChannelPage({
       qc.invalidateQueries({ queryKey: qk.feed() });
       qc.invalidateQueries({ queryKey: qk.channels() });
       qc.invalidateQueries({ queryKey: qk.myStatus() });
-      notify({ level: "info", message: t("channel.fullHistoryQueued") });
+      notify({ level: "info", message: msg("channel.fullHistoryQueued") });
     },
-    onError: (err) => notifyYouTubeActionError(err, t("channel.fullHistoryFailed")),
+    onError: (err) => notifyYouTubeActionError(err, msg("channel.fullHistoryFailed")),
   });
 
   // Feed priority, editable here with the same stepper + debounced-flush the manager uses (shared