feat(chat): 오리지널 탭 상단에 Yandex 배너를 추가한다

Ultraworked with [Sisyphus]

https://github.com/code-yeongyu/oh-my-openagent

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

SodaLive/Sources/Chat/Original/OriginalTabView.swift

@@ -21,6 +21,12 @@ struct OriginalTabView: View {
                 let width = (geo.size.width - (horizontalPadding * 2) - totalSpacing) / 3
                 
                 ScrollView(.vertical, showsIndicators: false) {
+                    VStack(spacing: 12) {
+                        YandexInlineBannerView(
+                            placement: .chatOriginalTabTop,
+                            horizontalPadding: horizontalPadding
+                        )
+
                         LazyVGrid(
                             columns: Array(
                                 repeating: GridItem(
@@ -60,6 +66,7 @@ struct OriginalTabView: View {
                         }
                     }
                 }
+            }
             .frame(minHeight: 0, maxHeight: .infinity)
             .padding(.vertical, 12)
             .onAppear {