fix: correct sort order default to descending (#17)

- Changed default sort direction from ascending to descending for markets and events list commands
- When --ascending flag is NOT provided: sorts in descending order (default behavior)
- When --ascending flag IS provided: sorts in ascending order (explicit override)
- Help text already stated 'Sort ascending instead of descending', implying descending is default
- Fixes issue where --ascending flag was a no-op and no way to get descending results

Author: harishkotra

src/commands/events.rs

@@ -79,7 +79,7 @@ pub async fn execute(client: &gamma::Client, args: EventsArgs, output: OutputFor
                 .limit(limit)
                 .maybe_closed(resolved_closed)
                 .maybe_offset(offset)
-                .maybe_ascending(if ascending { Some(true) } else { None })
+                .maybe_ascending(if ascending { Some(true) } else { Some(false) })
                 .maybe_tag_slug(tag)
                 .order(order.into_iter().collect::<Vec<_>>())
                 .build();

src/commands/markets.rs

@@ -95,7 +95,7 @@ pub async fn execute(
                 .maybe_closed(resolved_closed)
                 .maybe_offset(offset)
                 .maybe_order(order)
-                .maybe_ascending(if ascending { Some(true) } else { None })
+                .maybe_ascending(if ascending { Some(true) } else { Some(false) })
                 .build();
 
             let markets = client.markets(&request).await?;