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/MarkBaseFSApp/Sources/SettingsWindow.swift

@@ -0,0 +1,98 @@
+import Cocoa
+import UniformTypeIdentifiers
+
+class SettingsWindow: NSWindowController {
+    private var databasePathField: NSTextField?
+    private var mountPointField: NSTextField?
+    
+    convenience init() {
+        let window = NSWindow(
+            contentRect: NSRect(x: 0, y: 0, width: 400, height: 200),
+            styleMask: [.titled, .closable, .miniaturizable],
+            backing: .buffered,
+            defer: false
+        )
+        
+        window.title = "MarkBaseFS Settings"
+        window.center()
+        
+        self.init(window: window)
+        
+        setupUI()
+    }
+    
+    private func setupUI() {
+        guard let window = window else { return }
+        
+        let contentView = NSView(frame: window.contentRect(forFrameRect: window.frame))
+        
+        let databaseLabel = NSTextField(frame: NSRect(x: 20, y: 150, width: 100, height: 24))
+        databaseLabel.stringValue = "Database Path:"
+        databaseLabel.isEditable = false
+        databaseLabel.isBezeled = false
+        databaseLabel.drawsBackground = false
+        contentView.addSubview(databaseLabel)
+        
+        databasePathField = NSTextField(frame: NSRect(x: 120, y: 150, width: 200, height: 24))
+        databasePathField?.stringValue = DatabaseConfig().getCurrentDatabasePath()
+        contentView.addSubview(databasePathField!)
+        
+        let browseButton = NSButton(frame: NSRect(x: 330, y: 150, width: 50, height: 24))
+        browseButton.title = "Browse"
+        browseButton.bezelStyle = .rounded
+        browseButton.target = self
+        browseButton.action = #selector(browseDatabase)
+        contentView.addSubview(browseButton)
+        
+        let mountLabel = NSTextField(frame: NSRect(x: 20, y: 100, width: 100, height: 24))
+        mountLabel.stringValue = "Mount Point:"
+        mountLabel.isEditable = false
+        mountLabel.isBezeled = false
+        mountLabel.drawsBackground = false
+        contentView.addSubview(mountLabel)
+        
+        mountPointField = NSTextField(frame: NSRect(x: 120, y: 100, width: 260, height: 24))
+        mountPointField?.stringValue = "/Volumes/MarkBase_warren"
+        contentView.addSubview(mountPointField!)
+        
+        let applyButton = NSButton(frame: NSRect(x: 200, y: 20, width: 80, height: 24))
+        applyButton.title = "Apply"
+        applyButton.bezelStyle = .rounded
+        applyButton.target = self
+        applyButton.action = #selector(applySettings)
+        contentView.addSubview(applyButton)
+        
+        let cancelButton = NSButton(frame: NSRect(x: 300, y: 20, width: 80, height: 24))
+        cancelButton.title = "Cancel"
+        cancelButton.bezelStyle = .rounded
+        cancelButton.target = self
+        cancelButton.action = #selector(cancelSettings)
+        contentView.addSubview(cancelButton)
+        
+        window.contentView = contentView
+    }
+    
+    @objc func browseDatabase() {
+        let openPanel = NSOpenPanel()
+        if let sqliteType = UTType(filenameExtension: "sqlite") {
+            openPanel.allowedContentTypes = [sqliteType]
+        }
+        openPanel.allowsMultipleSelection = false
+        
+        if openPanel.runModal() == .OK {
+            if let url = openPanel.url {
+                databasePathField?.stringValue = url.path
+            }
+        }
+    }
+    
+    @objc func applySettings() {
+        print("Settings applied")
+        close()
+    }
+    
+    @objc func cancelSettings() {
+        print("Settings cancelled")
+        close()
+    }
+}