fixed two issues - gStore and getParent

initialized gStore for --request case

And, fixed getParent for event, since otherwise it would return wrong parent. Now it would result in a dummy parent, as it should.

bin/nostr_console.dart

@@ -238,6 +238,7 @@ Future<void> main(List<String> arguments) async {
             
             clearEvents();
             if( gDebug > 0) stdout.write("Total events of kind 1 in created tree: ${node.count()} events\n");
+            gStore = node;
             mainMenuUi(node);            
         });
         return;

lib/event_ds.dart

@@ -65,6 +65,7 @@ class EventData {
   bool               isHidden; // hidden by sending a reaction kind 7 event to this event, by the logged in user
   bool               isDeleted; // deleted by kind 5 event
   
+  // returns the immediate kind 1 parent
   String getParent(Map<String, Tree> allEventsMap) {
     if( eTags.isNotEmpty) {
       for( int i = eTags.length - 1; i >= 0; i--) {
@@ -74,6 +75,10 @@ class EventData {
           if( parentId != null) {
             return parentId;
           }
+        } else {
+          // if first e tag ( from end, which is the immediate parent) does not exist in the store, then return empty. 
+          // This has the drawback that the child comment would get a dummy parent, and would get out of the thread TODO fix that later
+          return "";
         }
       }
     }