修复工作人员资质关联与角色过滤

按安装、配送、运维菜单显式过滤工作人员，锁定资质所有者并使用姓名和角色回显。

扩展工作人员状态与多角色查询，补充权限校验、回归测试、操作日志和项目文档。

backend/api/internal/logic/platform/staff/staff.go

@@ -1,6 +1,7 @@
 package staff
 
 import (
+	"strconv"
 	"strings"
 
 	"git.apinb.com/bsm-sdk/core/errcode"
@@ -12,23 +13,80 @@ import (
 	"github.com/gin-gonic/gin"
 )
 
-// ListStaff 查询服务人员分页列表。
-func ListStaff(ctx *gin.Context) {
-	roleCode := strings.TrimSpace(ctx.Query("role_code"))
-	if roleCode == "" {
-		common.ListPage[models.StaffAccount](ctx)
-		return
+type staffListFilters struct {
+	RoleCodes  []string
+	Status     *int
+	WorkStatus string
+}
+
+// parseStaffListFilters 将工作人员列表查询参数收敛为闭集条件，拒绝含糊或冲突值。
+func parseStaffListFilters(roleCode, roleCodes, status, workStatus string) (staffListFilters, bool) {
+	filters := staffListFilters{}
+	roleCode = strings.TrimSpace(roleCode)
+	roleCodes = strings.TrimSpace(roleCodes)
+	if roleCode != "" && roleCodes != "" {
+		return filters, false
 	}
-	if !validStaffRole(roleCode) {
+	if roleCode != "" {
+		filters.RoleCodes = []string{roleCode}
+	} else if roleCodes != "" {
+		seen := map[string]bool{}
+		for _, value := range strings.Split(roleCodes, ",") {
+			value = strings.TrimSpace(value)
+			if value == "" || seen[value] {
+				return staffListFilters{}, false
+			}
+			seen[value] = true
+			filters.RoleCodes = append(filters.RoleCodes, value)
+		}
+	}
+	for _, value := range filters.RoleCodes {
+		if !validStaffRole(value) {
+			return staffListFilters{}, false
+		}
+	}
+	status = strings.TrimSpace(status)
+	if status != "" {
+		value, err := strconv.Atoi(status)
+		if err != nil || !common.IsGenericRecordStatus(value) || value == common.StatusArchived {
+			return staffListFilters{}, false
+		}
+		filters.Status = &value
+	}
+	workStatus = strings.TrimSpace(workStatus)
+	if workStatus != "" && !validWorkStatus(workStatus) {
+		return staffListFilters{}, false
+	}
+	filters.WorkStatus = workStatus
+	return filters, true
+}
+
+// ListStaff 查询服务人员分页列表，并应用调用方显式声明的角色与在岗状态条件。
+func ListStaff(ctx *gin.Context) {
+	filters, ok := parseStaffListFilters(
+		ctx.Query("role_code"),
+		ctx.Query("role_codes"),
+		ctx.Query("status"),
+		ctx.Query("work_status"),
+	)
+	if !ok {
 		infra.Response.Error(ctx, errcode.ErrInvalidArgument)
 		return
 	}
 	page, size := common.PageSize(ctx)
 	var list []models.StaffAccount
 	var total int64
-	query := common.ApplyKeywordFilter(ctx,
-		common.ActiveRecords(impl.DBService.Model(&models.StaffAccount{})).Where("role_code = ?", roleCode),
-		&models.StaffAccount{})
+	query := common.ActiveRecords(impl.DBService.Model(&models.StaffAccount{}))
+	if len(filters.RoleCodes) > 0 {
+		query = query.Where("role_code IN ?", filters.RoleCodes)
+	}
+	if filters.Status != nil {
+		query = query.Where("status = ?", *filters.Status)
+	}
+	if filters.WorkStatus != "" {
+		query = query.Where("work_status = ?", filters.WorkStatus)
+	}
+	query = common.ApplyKeywordFilter(ctx, query, &models.StaffAccount{})
 	if err := query.Count(&total).Error; err != nil {
 		infra.Response.Error(ctx, err)
 		return