refactor: restore some useful comments
refactor: restore some useful comments

RSS-Bridge/rss-bridge,ORelio/rss-bridge,Riduidel/rss-bridge,ORelio/rss-bridge,ORelio/rss-bridge,Riduidel/rss-bridge,Riduidel/rss-bridge,RSS-Bridge/rss-bridge,RSS-Bridge/rss-bridge