feat: 최근 들은 콘텐츠 로컬 DB 추가

SodaLive/Sources/MyPage/Recent/RecentContentViewModel.swift

@@ -0,0 +1,55 @@
+//
+//  RecentContentViewModel.swift
+//  SodaLive
+//
+//  Created by klaus on 7/28/25.
+//
+
+import SwiftUI
+import Combine
+
+class RecentContentViewModel: ObservableObject {
+    @Published var recentContents: [RecentContent] = []
+    @Published var contentCount: Int = 0
+    
+    private let service: RecentContentService
+    private var cancellables = Set<AnyCancellable>()
+    
+    init(service: RecentContentService = RecentContentService()) {
+        self.service = service
+        fetchRecentContents()
+        fetchContentCount()
+    }
+    
+    func fetchRecentContents(limit: Int = 10) {
+        self.recentContents = service.getRecentContents(limit: limit)
+        self.contentCount = recentContents.count
+    }
+    
+    func fetchContentCount() {
+        self.contentCount = service.getCount()
+    }
+    
+    func insertRecentContent(contentId: Int64, coverImageUrl: String, title: String, creatorNickname: String) {
+        service.insertRecentContent(
+            contentId: contentId,
+            coverImageUrl: coverImageUrl,
+            title: title,
+            creatorNickname: creatorNickname
+        )
+        fetchRecentContents()
+        fetchContentCount()
+    }
+    
+    func deleteByContentId(contentId: Int64) {
+        service.deleteByContentId(contentId: contentId)
+        fetchRecentContents()
+        fetchContentCount()
+    }
+    
+    func truncate() {
+        service.truncate()
+        fetchRecentContents()
+        fetchContentCount()
+    }
+}