feat(epg): copy catch-up programme URLs (#1569)

* feat(epg): copy catch-up programme URLs without changing playback

* fix(epg): let newer archive copy requests supersede pending work

AGENTS.md

@@ -1027,3 +1027,11 @@ do not duplicate them here.
 - The `nx-generate` skill handles generator discovery internally - don't call nx_docs just to look up generator syntax
 
 <!-- nx configuration end-->
+
+## Catch-Up URL Copying
+
+EPG timeline/list programme details expose Copy archive URL for supported
+Xtream/M3U archives, including Favorites/Recent. `EpgArchiveCopyService` owns
+clipboard feedback; hosts resolve URLs without mutating playback. Stalker and
+the currently non-catch-up M3U guide expose no action. See
+`docs/architecture/m3u-playlist-module.md` (Copy archive URL).