SMB Module Phase 1完成 (79行代码)

功能：
- SMBConfig: 配置结构体
- SMBManager: 管理API
- CLI工具：status/list/create/remove命令

验证：
- ✅ status命令JSON输出
- ✅ list命令正确显示
- ✅ create命令生成配置指南

下一步：
- 用户手动启用SMB服务（需要sudo）
- Windows/macOS客户端测试
- Phase 2: 权限控制优化

markbase-smb/src/config.rs

@@ -0,0 +1,49 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct SMBConfig {
+    pub share_name: String,
+    pub path: String,
+    pub comment: String,
+    pub read_only: bool,
+    pub browseable: bool,
+    pub allow_users: Vec<String>,
+}
+
+impl Default for SMBConfig {
+    fn default() -> Self {
+        SMBConfig {
+            share_name: "markbase".to_string(),
+            path: "/Users/accusys/momentry/var/sftpgo/data".to_string(),
+            comment: "MarkBase File Sharing".to_string(),
+            read_only: false,
+            browseable: true,
+            allow_users: vec!["accusys".to_string()],
+        }
+    }
+}
+
+impl SMBConfig {
+    pub fn new(share_name: String, path: String) -> Self {
+        SMBConfig {
+            share_name,
+            path,
+            comment: "MarkBase File Sharing".to_string(),
+            read_only: false,
+            browseable: true,
+            allow_users: vec!["accusys".to_string()],
+        }
+    }
+    
+    pub fn to_smb_conf(&self) -> String {
+        format!(
+            "[{}]\n   path = {}\n   comment = {}\n   read only = {}\n   browseable = {}\n   valid users = {}\n",
+            self.share_name,
+            self.path,
+            self.comment,
+            if self.read_only { "yes" } else { "no" },
+            if self.browseable { "yes" } else { "no" },
+            self.allow_users.join(", ")
+        )
+    }
+}