feat(tasks): implement long-term delayed tasks with KV and Cron

wrangler.toml

@@ -45,6 +45,14 @@ queue = "anilist-updates"
 [[queues.consumers]]
 queue = "new-episode"
 
+[[kv_namespaces]]
+binding = "DELAYED_TASKS"
+id = "c8db249d8ee7462b91f9c374321776e4"
+preview_id = "ff38240eb2aa4b1388c705f4974f5aec"
+
+[triggers]
+crons = ["0 */12 * * *"]
+
 [[d1_databases]]
 binding = "DB"
 database_name = "aniplay"