refactor: 뷰에서 Presentation 책임 제거

Author: opficdev

DevLog/Presentation/ViewModel/ProfileViewModel.swift

@@ -55,6 +55,14 @@ final class ProfileViewModel: Store {
     private let updateHeatmapActivityTypesUseCase: UpdateProfileHeatmapActivityTypesUseCase
     private let calendar = Calendar.current
 
+    var quarterTitle: String {
+        guard let start = state.selectedQuarterStart else { return "" }
+        let year = calendar.component(.year, from: start)
+        let month = calendar.component(.month, from: start)
+        let quarter = ((month - 1) / 3) + 1
+        return "\(year) Q\(quarter)"
+    }
+
     var resetButtonEnabled: Bool {
         !state.statusMessage.isEmpty && state.showDoneButton
     }

DevLog/UI/Profile/ProfileView.swift

@@ -196,7 +196,7 @@ struct ProfileView: View {
 
             Spacer()
 
-            Text(quarterTitle)
+            Text(viewModel.quarterTitle)
             .font(.subheadline)
             .foregroundStyle(.secondary)
 
@@ -211,15 +211,6 @@ struct ProfileView: View {
         }
     }
 
-    private var quarterTitle: String {
-        guard let start = viewModel.state.selectedQuarterStart else { return "" }
-        let calendar = Calendar.current
-        let year = calendar.component(.year, from: start)
-        let month = calendar.component(.month, from: start)
-        let quarter = ((month - 1) / 3) + 1
-        return "\(year) Q\(quarter)"
-    }
-
     @ViewBuilder
     private func selectedDayDetailSection(for day: ProfileCompletionDay) -> some View {
         let activities = viewModel.selectedDayActivities