diff --git a/AIStudyApp/AIStudyApp/Core/Services/APIService.swift b/AIStudyApp/AIStudyApp/Core/Services/APIService.swift
index 6d7dbaa..557df83 100644
--- a/AIStudyApp/AIStudyApp/Core/Services/APIService.swift
+++ b/AIStudyApp/AIStudyApp/Core/Services/APIService.swift
@@ -210,6 +210,13 @@ class LearningSessionService {
     func end(id: String) async throws -> LearningSession {
         return try await client.request("/learning-sessions/\(id)/end", method: "POST")
     }
+
+    func list(page: Int = 1, limit: Int = 20) async throws -> [LearningSession] {
+        return try await client.request("/learning-sessions", queryItems: [
+            URLQueryItem(name: "page", value: String(page)),
+            URLQueryItem(name: "limit", value: String(limit)),
+        ])
+    }
 }
 
 // MARK: - Review
diff --git a/AIStudyApp/AIStudyApp/Core/Services/FileUploadService.swift b/AIStudyApp/AIStudyApp/Core/Services/FileUploadService.swift
index c010470..95adacd 100644
--- a/AIStudyApp/AIStudyApp/Core/Services/FileUploadService.swift
+++ b/AIStudyApp/AIStudyApp/Core/Services/FileUploadService.swift
@@ -74,6 +74,11 @@ class FileUploadService {
         return confirmResp.id
     }
 
+    /// 删除文件（COS + 数据库）
+    func deleteFile(fileId: String) async throws {
+        let _: GenericSuccessResponse = try await client.request("/files/\(fileId)", method: "DELETE")
+    }
+
     /// 获取文件下载 URL
     func getDownloadUrl(fileId: String) async throws -> String {
         let detail: FileDetailResponse = try await client.request("/files/\(fileId)")