refactor: 引入 ScanSession，替代全局状态穿透扫描管道 (Phase 1-3)

- 新增 common/session.go: ScanSession 结构体封装 Config/State/Params/Dialer
- RunScan/Strategy/ExecuteScanTasks/executeScanTask 全部接收 session
- Plugin 接口从 Scan(ctx, info, config, state) 改为 Scan(ctx, info, session)
- 48 个插件实现统一更新签名
- Web API 构建 ScanSession 传给 RunScan
- CLI 模式通过 Initialize() 创建 session

plugins/services/ms17010.go

@@ -34,7 +34,9 @@ func NewMS17010Plugin() *MS17010Plugin {
 // GetPorts 实现Plugin接口
 
 // Scan 执行MS17-010扫描
-func (p *MS17010Plugin) Scan(ctx context.Context, info *common.HostInfo, config *common.Config, state *common.State) *ScanResult {
+func (p *MS17010Plugin) Scan(ctx context.Context, info *common.HostInfo, session *common.ScanSession) *ScanResult {
+	config := session.Config
+	state := session.State
 	// 如果禁用暴力破解，也禁用漏洞检测
 	if config.DisableBrute {
 		return &ScanResult{