comment code about textNoteList and eventRelayMap

src/main.js

@@ -56,8 +56,8 @@ const subscription = pool.sub({
   }
 });
 
-const textNoteList = [];
+const textNoteList = []; // could use indexDB
-const eventRelayMap = {};
+const eventRelayMap = {}; // eventId: [relay1, relay2]
 const hasEventTag = tag => tag[0] === 'e';
 
 function handleTextNote(evt, relay) {