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）

docs/fskit-research/examples/HelloFS/Sources/HelloFS.swift

@@ -0,0 +1,179 @@
+// HelloFS - Final Correct Version
+// Based on Apple FSKit v1 (macOS Sequoia 15+)
+// CRITICAL: FSFileSystem is unavailable, use FSUnaryFileSystem
+
+import Foundation
+import FSKit
+
+// MARK: - Entry Point (FSUnaryFileSystem)
+
+// Note: FSKit v1 does NOT have separate Extension class
+// FSUnaryFileSystem is the entry point directly
+
+final class HelloFS: FSUnaryFileSystem {
+    
+    required init() {
+        super.init()
+        print("HelloFS initialized")
+    }
+    
+    func probeResource(
+        _ resource: FSResource,
+        replyHandler: @escaping (FSProbeResult?) -> Void
+    ) {
+        print("HelloFS: Probing resource")
+        
+        // Accept any block device
+        let result = FSProbeResult.usable(
+            resource: resource,
+            identifier: FSResourceIdentifier(uuid: UUID()),
+            userInfo: nil
+        )
+        
+        replyHandler(result)
+    }
+    
+    func loadResource(
+        _ resource: FSResource,
+        options: FSTaskOptions,
+        replyHandler: @escaping (Error?) -> Void
+    ) {
+        print("HelloFS: Loading resource: \(resource)")
+        
+        // For HelloFS, just return success
+        replyHandler(nil)
+    }
+    
+    func unloadResource(
+        _ resource: FSResource,
+        options: FSTaskOptions,
+        replyHandler: @escaping (Error?) -> Void
+    ) {
+        print("HelloFS: Unloading resource")
+        
+        replyHandler(nil)
+    }
+}
+
+// MARK: - Volume (FSVolume with protocols)
+
+final class HelloVolume: FSVolume {
+    
+    var rootItem: HelloItem
+    var items: [String: HelloItem] = [:]
+    
+    init(resource: FSResource) {
+        rootItem = HelloItem(name: "/", type: .directory)
+        
+        super.init(resource: resource)
+        
+        // Add sample file
+        let helloFile = HelloItem(name: "hello.txt", type: .file)
+        helloFile.content = "Hello from HelloFS!\n".data(using: .utf8)
+        items["hello.txt"] = helloFile
+        
+        print("HelloVolume initialized")
+    }
+}
+
+// MARK: - Basic Volume Operations
+
+extension HelloVolume: FSVolume.PathConfOperations {
+    func pathconf(_ item: FSItem, conf: FSPathConf) throws -> Int32 {
+        return 255 // Basic value
+    }
+}
+
+extension HelloVolume: FSVolume.OpenCloseOperations {
+    func open(_ item: FSItem, options: FSTaskOptions) throws -> FSFileHandle {
+        return FSFileHandle(rawValue: item.identifier.rawValue)
+    }
+    
+    func close(_ handle: FSFileHandle) throws {
+        // Nothing to do
+    }
+}
+
+extension HelloVolume: FSVolume.IOOperations {
+    func read(
+        _ handle: FSFileHandle,
+        buffer: UnsafeMutableRawBufferPointer,
+        options: FSTaskOptions
+    ) throws -> Int {
+        // Find item by handle
+        for item in items.values {
+            if item.identifier.rawValue == handle.rawValue {
+                if let content = item.content {
+                    let copyLength = min(buffer.count, content.count)
+                    content.withUnsafeBytes { src in
+                        buffer.copyBytes(from: UnsafeRawBufferPointer(
+                            start: src.baseAddress,
+                            count: copyLength
+                        ))
+                    }
+                    return copyLength
+                }
+            }
+        }
+        return 0
+    }
+    
+    func write(
+        _ handle: FSFileHandle,
+        buffer: UnsafeRawBufferPointer,
+        options: FSTaskOptions
+    ) throws -> Int {
+        for item in items.values {
+            if item.identifier.rawValue == handle.rawValue {
+                item.content = Data(buffer)
+                return buffer.count
+            }
+        }
+        return 0
+    }
+}
+
+extension HelloVolume: FSVolume.DirectoryOperations {
+    func lookupItem(
+        named name: FSFileName,
+        inDirectory directory: FSItem
+    ) throws -> (FSItem, FSFileName) {
+        if let item = items[name] {
+            return (item, name)
+        }
+        throw NSError(domain: "HelloFS", code: 2, userInfo: nil)
+    }
+    
+    func enumerateDirectory(
+        _ directory: FSItem,
+        startingAt: UInt64,
+        verifier: inout FSItemVerifier,
+        attributes: FSItem.Attributes,
+        packer: FSItemPacker
+    ) throws {
+        for (name, item) in items {
+            try packer.packItem(item, named: name)
+        }
+    }
+}
+
+// MARK: - File Item
+
+final class HelloItem: FSItem {
+    let name: String
+    let type: ItemType
+    var content: Data?
+    
+    private static var nextID: UInt64 = 1
+    
+    init(name: String, type: ItemType) {
+        self.name = name
+        self.type = type
+        
+        let id = HelloItem.nextID
+        HelloItem.nextID += 1
+        
+        super.init(identifier: FSItem.Identifier(rawValue: id))
+    }
+}
+