feat(web): simplify subscription and manual download flows and sync UHD styles

apps/web/app/components/discover/discover-card.tsx

@@ -1,4 +1,4 @@
-import { type DiscoverItem, tmdbImageUrl } from "@umt/contracts";
+import { type DiscoverItem, externalImageUrl, tmdbImageUrl } from "@umt/contracts";
 import { CalendarPlus, LoaderCircle, PackageSearch, Star } from "lucide-react";
 import { useState } from "react";
 import { StatusBadge } from "~/components/console/status-badge.tsx";
@@ -11,7 +11,7 @@ import { itemMeta, localBadges } from "./discover-state.ts";
 export type CardAction = "open" | "subscribe" | "search";
 
 export function coverUrl(it: Pick<DiscoverItem, "cover" | "posterPath">): string | null {
-  return it.posterPath ? tmdbImageUrl(it.posterPath, "w342") : it.cover;
+  return it.posterPath ? tmdbImageUrl(it.posterPath, "w342") : externalImageUrl(it.cover);
 }
 
 export function DiscoverCard({