feat: 支持服务器主机名排序

- 服务器列表默认按主机名升序并支持表头切换

- 后端按白名单排序并区分分页缓存键

backend/controller/server.go

@@ -74,8 +74,9 @@ func (h *ServerHandler) ListServers(c *gin.Context) {
 	status := c.Query("status")
 	regionID := c.Query("region_id")
 
-	// 构建缓存键（按查询参数区分）
+	// 构建缓存键（按查询参数区分） // Logan.Li
 	cacheKey := "servers:list:" + query.Keyword + ":" + status + ":" + regionID +
+		":" + query.Sort + ":" + query.Order +
 		":" + strconv.Itoa(query.Page) + ":" + strconv.Itoa(query.PageSize)
 	const cacheTTL = 10 * time.Second
 
@@ -114,7 +115,7 @@ func (h *ServerHandler) ListServers(c *gin.Context) {
 	var servers []model.Server
 	db.Preload("Region").Preload("Cloud").
 		Offset(query.GetOffset()).Limit(query.GetLimit()).
-		Order("created_at DESC").
+		Order(serverOrderClause(query.Sort, query.Order)).
 		Find(&servers)
 
 	// 填充 has_auth 字段（密码和SSH密钥在JSON中隐藏，但前端需知道是否有凭据） // Logan.Li
@@ -142,6 +143,17 @@ func (h *ServerHandler) ListServers(c *gin.Context) {
 	c.JSON(http.StatusOK, resp)
 }
 
+// serverOrderClause 返回服务器列表允许使用的排序表达式，避免直接拼接请求参数。 // Logan.Li
+func serverOrderClause(sortField, order string) string {
+	if sortField != "hostname" {
+		return "created_at DESC"
+	}
+	if order == "desc" {
+		return "LOWER(hostname) DESC, id DESC"
+	}
+	return "LOWER(hostname) ASC, id ASC"
+}
+
 // GetServer 获取服务器详情
 // @Summary 获取服务器详情
 // @Description 获取指定服务器的详细信息

backend/controller/server_sort_test.go

@@ -0,0 +1,27 @@
+package controller
+
+import "testing"
+
+// TestServerOrderClause 验证服务器排序字段仅使用后端白名单表达式。 // Logan.Li
+func TestServerOrderClause(t *testing.T) {
+	tests := []struct {
+		name      string
+		sortField string
+		order     string
+		want      string
+	}{
+		{name: "默认排序", want: "created_at DESC"},
+		{name: "主机名升序", sortField: "hostname", order: "asc", want: "LOWER(hostname) ASC, id ASC"},
+		{name: "主机名降序", sortField: "hostname", order: "desc", want: "LOWER(hostname) DESC, id DESC"},
+		{name: "非法方向回退升序", sortField: "hostname", order: "invalid", want: "LOWER(hostname) ASC, id ASC"},
+		{name: "非法字段回退默认", sortField: "hostname; DROP TABLE sys_servers", order: "asc", want: "created_at DESC"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := serverOrderClause(tt.sortField, tt.order); got != tt.want {
+				t.Fatalf("serverOrderClause(%q, %q) = %q, want %q", tt.sortField, tt.order, got, tt.want)
+			}
+		})
+	}
+}

frontend/src/components/server/ServerManager.tsx

@@ -42,6 +42,7 @@ export function ServerManager() {
   const [selectedServers, setSelectedServers] = useState<string[]>([]);
   const [searchQuery, setSearchQuery] = useState("");
   const [statusFilter, setStatusFilter] = useState<string>("all");
+  const [hostnameOrder, setHostnameOrder] = useState<"asc" | "desc">("asc");
   const [cloudImportOpen, setCloudImportOpen] = useState(false);
   const [excelImportOpen, setExcelImportOpen] = useState(false);
 
@@ -79,11 +80,16 @@ export function ServerManager() {
   const [pageSize, setPageSize] = useState(10);
 
   const queryParams = useMemo(() => {
-    const params: Record<string, unknown> = { page, page_size: pageSize };
+    const params: Record<string, unknown> = {
+      page,
+      page_size: pageSize,
+      sort: "hostname",
+      order: hostnameOrder,
+    };
     if (searchQuery) params.keyword = searchQuery;
     if (statusFilter && statusFilter !== "all") params.status = statusFilter;
     return params;
-  }, [page, pageSize, searchQuery, statusFilter]);
+  }, [page, pageSize, searchQuery, statusFilter, hostnameOrder]);
 
   const {
     data,
@@ -130,6 +136,12 @@ export function ServerManager() {
     setPage(1);
   };
 
+  // 切换主机名排序后回到第一页，保持跨页顺序连续。 // Logan.Li
+  const handleHostnameSort = () => {
+    setHostnameOrder((current) => (current === "asc" ? "desc" : "asc"));
+    setPage(1);
+  };
+
   const toggleSelectAll = () => {
     if (selectedServers.length === servers.length) {
       setSelectedServers([]);
@@ -370,8 +382,10 @@ export function ServerManager() {
         }}
         searchQuery={searchQuery}
         statusFilter={statusFilter}
+        hostnameOrder={hostnameOrder}
         onSearchChange={handleSearch}
         onStatusFilterChange={handleStatusFilter}
+        onHostnameSort={handleHostnameSort}
         selectedServers={selectedServers}
         onToggleSelectAll={toggleSelectAll}
         onToggleSelect={toggleSelect}

frontend/src/components/server/ServerTableSection.tsx

@@ -24,6 +24,8 @@ import {
   RefreshCw,
   ChevronLeft,
   ChevronRight,
+  ArrowUp,
+  ArrowDown,
 } from "lucide-react";
 import { ContentPanel } from "@/components/layout/ContentPanel";
 import { ServerTableRow } from "./ServerTableRow";
@@ -44,8 +46,10 @@ export interface ServerTableSectionProps {
   /** 搜索/筛选 */
   searchQuery: string;
   statusFilter: string;
+  hostnameOrder: "asc" | "desc";
   onSearchChange: (val: string) => void;
   onStatusFilterChange: (val: string) => void;
+  onHostnameSort: () => void;
   /** 选择 */
   selectedServers: string[];
   onToggleSelectAll: () => void;
@@ -72,8 +76,10 @@ export function ServerTableSection({
   onPageSizeChange,
   searchQuery,
   statusFilter,
+  hostnameOrder,
   onSearchChange,
   onStatusFilterChange,
+  onHostnameSort,
   selectedServers,
   onToggleSelectAll,
   onToggleSelect,
@@ -152,8 +158,23 @@ export function ServerTableSection({
                   onCheckedChange={onToggleSelectAll}
                 />
               </TableHead>
-              <TableHead className="text-[var(--dg-text-secondary)]">
-                {t("server.hostname")}
+              <TableHead
+                className="text-[var(--dg-text-secondary)]"
+                aria-sort={hostnameOrder === "asc" ? "ascending" : "descending"}
+              >
+                <button
+                  type="button"
+                  onClick={onHostnameSort}
+                  className="inline-flex h-8 items-center gap-1 rounded px-1 hover:bg-[var(--dg-bg-hover)] hover:text-[var(--dg-text-primary)]"
+                  title={`${t("server.hostname")} - ${t(`common.${hostnameOrder === "asc" ? "ascending" : "descending"}`)}`}
+                >
+                  {t("server.hostname")}
+                  {hostnameOrder === "asc" ? (
+                    <ArrowUp className="h-3.5 w-3.5 dg-text-blue" />
+                  ) : (
+                    <ArrowDown className="h-3.5 w-3.5 dg-text-blue" />
+                  )}
+                </button>
               </TableHead>
               <TableHead className="text-[var(--dg-text-secondary)]">
                 {t("server.ipAddress")}

frontend/src/hooks/api/useServers.ts

@@ -18,6 +18,8 @@ type ListParams = {
   page_size?: number;
   keyword?: string;
   status?: string;
+  sort?: 'hostname';
+  order?: 'asc' | 'desc';
 };
 
 type ServerListResult = {