MarkBase架构升级：Multi-Volume Virtual Tree + Dual-View Management + Git Remote修正

核心功能：
- ✅ Categories/Series双视图管理（category_view.rs + import_markdown.rs）
- ✅ FUSE Multi-Volume支持（tree_type参数）
- ✅ SSH/SFTP/SCP/rsync协议完整实现（4042行）
- ✅ NFS/SMB Module Phase 1-3完成
- ✅ Archive Module Phase 1-4完成（2916行）
- ✅ Download Center API完整实现
- ✅ S3兼容API实现（560行）

Git配置修正：
- ✅ 删除错误origin（gitea.momentry.ddns.net）
- ✅ 删除m5max128（指向机器名）
- ✅ 设置origin = m5max128gitea.momentry.ddns.net/admin/markbase
- ✅ 设置m4minigitea = m4minigitea.momentry.ddns.net/warren/markbase

数据清理：
- ✅ 删除38个临时SQLite（保留accusys.sqlite、demo.sqlite）
- ✅ 删除.bak、test_*.bin、调试脚本等临时文件
- ✅ 删除临时目录（build/、download files/、raid_test/等）
- ✅ 更新.gitignore排除临时文件

架构优化：
- 52个文件修改，2434行新增，4739行删除
- Workspace成员整合（16个crate）
- 数据库状态：accusys.sqlite保留（主demo测试）

远程同步：
- ✅ 准备推送到m5max128gitea（远程Gitea）
- ✅ 准备推送到m4minigitea（本地Gitea）

MarkBaseFS/test_system_extension_install.swift

@@ -0,0 +1,72 @@
+import Foundation
+import SystemExtensions
+
+print("=== System Extension API Installation Test ===")
+print("Date: \(Date())")
+print("")
+
+class ExtensionDelegate: NSObject, SystemExtensionRequestDelegate {
+    func request(_ request: SystemExtensionRequest, didFailWithError error: Error) {
+        print("❌ Installation failed: \(error.localizedDescription)")
+        print("Error domain: \(error._domain)")
+        print("Error code: \(error._code)")
+        
+        if let nsError = error as NSError? {
+            print("User info: \(nsError.userInfo)")
+        }
+        
+        exit(1)
+    }
+    
+    func request(_ request: SystemExtensionRequest, didFinishWithResult result: SystemExtensionRequest.Result) {
+        print("✅ Installation succeeded!")
+        print("Result: \(result)")
+        
+        switch result {
+        case .installed:
+            print("Extension installed successfully")
+        case .willInstallAfterReboot:
+            print("Extension will be installed after reboot")
+        case .replaced:
+            print("Extension replaced")
+        case .willReplaceAfterReboot:
+            print("Extension will be replaced after reboot")
+        @unknown default:
+            print("Unknown result")
+        }
+        
+        exit(0)
+    }
+    
+    func requestNeedsUserApproval(_ request: SystemExtensionRequest) {
+        print("⚠️  User approval needed")
+        print("Please check System Preferences → Privacy & Security → System Extensions")
+        print("Extension ID: \(request.identifier)")
+        print("")
+    }
+    
+    func request(_ request: SystemExtensionRequest, needsApprovalToShowMessage message: String) {
+        print("Approval message: \(message)")
+    }
+    
+    func request(_ request: SystemExtensionRequest, needsApprovalTo reboot: Bool) {
+        print("Reboot needed: \(reboot)")
+    }
+}
+
+print("Extension ID: com.accusys.markbase.fskitmodule")
+print("")
+
+let delegate = ExtensionDelegate()
+let request = SystemExtensionRequest(
+    identifier: "com.accusys.markbase.fskitmodule",
+    delegate: delegate
+)
+
+print("Submitting installation request...")
+SystemExtensionManager.shared.submitRequest(request)
+
+print("Waiting for approval...")
+print("")
+
+RunLoop.main.run()