feat(mining-admin-web): 引荐关系改为树形可视化布局

- 仿照1.0 admin-web的树形结构
- 显示引荐人链(向上)、总部节点、当前用户
- 递归展开/收起直推下级
- 圆形+-按钮控制展开

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/mining-admin-web/src/features/users/components/referral-tree.tsx

@@ -8,8 +8,6 @@ import { formatNumber } from '@/lib/utils/format';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
 import { Button } from '@/components/ui/button';
 import { Skeleton } from '@/components/ui/skeleton';
-import { Avatar, AvatarFallback, AvatarImage } from '@/components/ui/avatar';
-import { ChevronDown, ChevronRight, Users, TreePine, Building2 } from 'lucide-react';
 import type { ReferralNode } from '@/types/user';
 import { cn } from '@/lib/utils';
 
@@ -101,187 +99,178 @@ export function ReferralTree({ accountSequence }: ReferralTreeProps) {
   return (
     <Card>
       <CardHeader className="flex flex-row items-center justify-between">
-        <CardTitle className="text-lg">引荐关系</CardTitle>
+        <CardTitle className="text-lg">引荐关系树</CardTitle>
         {treeRootUser !== accountSequence && (
           <Button variant="outline" size="sm" onClick={() => setTreeRootUser(accountSequence)}>
             返回当前用户
           </Button>
         )}
       </CardHeader>
-      <CardContent className="space-y-4">
-        {/* 向上的引荐人链 */}
-        <div className="space-y-2">
-          <p className="text-sm font-medium text-muted-foreground">引荐人链 (向上)</p>
-          {(referralTree.ancestors?.length ?? 0) > 0 ? (
-            <div className="space-y-2">
-              {(referralTree.ancestors || []).map((ancestor, index) => (
-                <div key={ancestor.accountSequence}>
-                  <ReferralNodeCard
-                    node={ancestor}
-                    onClick={() => handleTreeNodeClick(ancestor)}
-                    variant="ancestor"
-                  />
-                  {index < (referralTree.ancestors?.length ?? 0) - 1 && (
-                    <div className="flex justify-center py-1">
-                      <ChevronDown className="h-4 w-4 text-muted-foreground" />
+      <CardContent>
+        {/* 树形结构容器 - 仿照1.0 admin-web的样式 */}
+        <div className="flex flex-col items-center gap-4 p-6 bg-muted/30 rounded-lg">
+          {/* 向上的引荐人链 */}
+          <div className="flex flex-col items-center gap-2">
+            <span className="text-xs text-muted-foreground uppercase tracking-wide mb-2">
+              引荐人链 (向上)
+            </span>
+            {(referralTree.ancestors?.length ?? 0) > 0 ? (
+              <>
+                <div className="flex flex-col items-center gap-2">
+                  {(referralTree.ancestors || []).map((ancestor, index) => (
+                    <div key={ancestor.accountSequence} className="flex flex-col items-center">
+                      <TreeNodeCard
+                        node={ancestor}
+                        onClick={() => handleTreeNodeClick(ancestor)}
+                      />
+                      {index < (referralTree.ancestors?.length ?? 0) - 1 && (
+                        <div className="text-muted-foreground text-lg py-1">↓</div>
+                      )}
                     </div>
-                  )}
+                  ))}
                 </div>
-              ))}
-              <div className="flex justify-center py-1">
-                <ChevronDown className="h-4 w-4 text-muted-foreground" />
-              </div>
-            </div>
-          ) : (
-            <div className="flex items-center justify-center gap-2 p-3 bg-muted rounded-lg">
-              <Building2 className="h-4 w-4" />
-              <span className="text-sm font-medium">总部</span>
-            </div>
-          )}
-        </div>
-
-        {/* 当前用户 */}
-        <div className="space-y-2">
-          <p className="text-sm font-medium text-muted-foreground">当前用户</p>
-          <ReferralNodeCard
-            node={referralTree.currentUser}
-            isCurrentUser
-            isHighlight={referralTree.currentUser.accountSequence === accountSequence}
-            expandedNodes={expandedNodes}
-            onToggle={handleToggleNode}
-            onClick={handleTreeNodeClick}
-          />
-        </div>
-
-        {/* 直推下级列表 */}
-        {(referralTree.directReferrals?.length ?? 0) > 0 && (
-          <div className="space-y-2 ml-6 border-l-2 border-muted pl-4">
-            <p className="text-sm font-medium text-muted-foreground">
-              直推下级 ({referralTree.directReferrals?.length ?? 0})
-            </p>
-            <div className="space-y-2">
-              {(referralTree.directReferrals || []).map((child) => (
-                <ReferralNodeCard
-                  key={child.accountSequence}
-                  node={child}
-                  expandedNodes={expandedNodes}
-                  onToggle={handleToggleNode}
-                  onClick={handleTreeNodeClick}
-                  showExpandButton
-                />
-              ))}
-            </div>
+                <div className="text-muted-foreground text-lg py-1">↓</div>
+              </>
+            ) : (
+              <>
+                {/* 总部节点 */}
+                <div className="flex items-center justify-center px-6 py-2 bg-gradient-to-r from-primary/10 to-green-500/10 border-2 border-primary rounded-lg min-w-[100px]">
+                  <span className="text-base font-bold text-primary">总部</span>
+                </div>
+                <div className="text-muted-foreground text-lg py-1">↓</div>
+              </>
+            )}
           </div>
-        )}
+
+          {/* 当前用户节点 - 递归组件 */}
+          <div className="flex flex-col items-center w-full">
+            <ReferralNodeItem
+              node={referralTree.currentUser}
+              isCurrentUser={true}
+              isHighlight={referralTree.currentUser.accountSequence === accountSequence}
+              expandedNodes={expandedNodes}
+              onToggle={handleToggleNode}
+              onClick={handleTreeNodeClick}
+            />
+          </div>
+        </div>
       </CardContent>
     </Card>
   );
 }
 
-interface ReferralNodeCardProps {
+/**
+ * 树节点卡片 - 单个节点的展示
+ */
+interface TreeNodeCardProps {
   node: ReferralNode;
   isCurrentUser?: boolean;
   isHighlight?: boolean;
-  variant?: 'ancestor' | 'current' | 'child';
-  expandedNodes?: Record<string, ReferralNode[] | null>;
-  onToggle?: (nodeSeq: string, hasChildren: boolean) => void;
-  onClick?: (node: ReferralNode) => void;
-  showExpandButton?: boolean;
+  onClick?: () => void;
 }
 
-function ReferralNodeCard({
+function TreeNodeCard({ node, isCurrentUser, isHighlight, onClick }: TreeNodeCardProps) {
+  return (
+    <button
+      type="button"
+      className={cn(
+        'flex flex-col items-center px-6 py-3 bg-background border-2 border-border rounded-lg cursor-pointer transition-all',
+        'hover:border-primary hover:shadow-md hover:-translate-y-0.5',
+        isCurrentUser && 'border-primary bg-primary/5',
+        isHighlight && 'border-[3px] ring-4 ring-primary/20'
+      )}
+      onClick={onClick}
+    >
+      <span className="font-mono text-base font-bold text-foreground">
+        {node.accountSequence}
+      </span>
+      <span className="text-xs text-muted-foreground mt-1">
+        {node.nickname || '未设置'}
+      </span>
+      <span className="text-xs text-muted-foreground mt-1">
+        本人认种: {formatNumber(node.personalAdoptions)} / 团队认种: {formatNumber(node.teamAdoptions)}
+      </span>
+      {node.directReferralCount > 0 && (
+        <span className="text-xs text-primary font-medium mt-1">
+          引荐: {formatNumber(node.directReferralCount)}
+        </span>
+      )}
+    </button>
+  );
+}
+
+/**
+ * 递归渲染引荐节点 - 支持展开/收起子节点
+ */
+interface ReferralNodeItemProps {
+  node: ReferralNode;
+  isCurrentUser?: boolean;
+  isHighlight?: boolean;
+  expandedNodes: Record<string, ReferralNode[] | null>;
+  onToggle: (nodeSeq: string, hasChildren: boolean) => void;
+  onClick: (node: ReferralNode) => void;
+}
+
+function ReferralNodeItem({
   node,
   isCurrentUser = false,
   isHighlight = false,
-  variant,
-  expandedNodes = {},
+  expandedNodes,
   onToggle,
   onClick,
-  showExpandButton = false,
-}: ReferralNodeCardProps) {
+}: ReferralNodeItemProps) {
   const hasChildren = node.directReferralCount > 0;
   const isExpanded = expandedNodes[node.accountSequence] !== undefined;
   const isLoading = expandedNodes[node.accountSequence] === null;
   const children = expandedNodes[node.accountSequence] || [];
 
   return (
-    <div className="space-y-2">
-      <div
-        className={cn(
-          'flex items-center gap-3 p-3 rounded-lg border transition-colors cursor-pointer hover:bg-accent',
-          isCurrentUser && 'border-primary bg-primary/5',
-          isHighlight && 'ring-2 ring-primary'
-        )}
-        onClick={() => onClick?.(node)}
-      >
-        <Avatar className="h-10 w-10">
-          <AvatarImage src={node.avatar || undefined} alt={node.nickname || ''} />
-          <AvatarFallback>{node.nickname?.charAt(0) || 'U'}</AvatarFallback>
-        </Avatar>
+    <div className="flex flex-col items-center">
+      {/* 节点内容 */}
+      <div className="flex flex-col items-center">
+        <TreeNodeCard
+          node={node}
+          isCurrentUser={isCurrentUser}
+          isHighlight={isHighlight}
+          onClick={() => onClick(node)}
+        />
 
-        <div className="flex-1 min-w-0">
-          <div className="flex items-center gap-2">
-            <span className="font-mono text-sm">{node.accountSequence}</span>
-            <span className="text-sm truncate">{node.nickname || '未设置'}</span>
-          </div>
-          <div className="flex items-center gap-4 text-xs text-muted-foreground mt-1">
-            <span className="flex items-center gap-1">
-              <TreePine className="h-3 w-3 text-green-600" />
-              个人: {formatNumber(node.personalAdoptions)}
-            </span>
-            <span className="flex items-center gap-1">
-              <Users className="h-3 w-3 text-blue-600" />
-              团队: {formatNumber(node.teamAdoptions)}
-            </span>
-            {node.directReferralCount > 0 && (
-              <span>引荐: {formatNumber(node.directReferralCount)}</span>
+        {/* 展开/收起按钮 */}
+        {hasChildren && (
+          <button
+            type="button"
+            className={cn(
+              'flex items-center justify-center w-7 h-7 mt-2 bg-primary text-white',
+              'border-none rounded-full cursor-pointer text-lg font-bold leading-none',
+              'transition-all hover:opacity-80 hover:scale-110',
+              'disabled:opacity-50 disabled:cursor-not-allowed'
             )}
-          </div>
-        </div>
-
-        {showExpandButton && hasChildren && (
-          <Button
-            variant="ghost"
-            size="icon"
-            className="h-8 w-8"
             onClick={(e) => {
               e.stopPropagation();
-              onToggle?.(node.accountSequence, hasChildren);
+              onToggle(node.accountSequence, hasChildren);
             }}
             disabled={isLoading}
           >
-            {isLoading ? (
-              <span className="animate-spin">...</span>
-            ) : isExpanded ? (
-              <ChevronDown className="h-4 w-4" />
-            ) : (
-              <ChevronRight className="h-4 w-4" />
-            )}
-          </Button>
+            {isLoading ? '...' : isExpanded ? '−' : '+'}
+          </button>
         )}
-
-        <Link
-          href={`/users/${node.accountSequence}`}
-          className="text-xs text-primary hover:underline"
-          onClick={(e) => e.stopPropagation()}
-        >
-          查看
-        </Link>
       </div>
 
-      {/* 展开的子节点 */}
+      {/* 递归渲染子节点 */}
       {isExpanded && children.length > 0 && (
-        <div className="ml-6 border-l-2 border-muted pl-4 space-y-2">
-          {children.map((child) => (
-            <ReferralNodeCard
-              key={child.accountSequence}
-              node={child}
-              expandedNodes={expandedNodes}
-              onToggle={onToggle}
-              onClick={onClick}
-              showExpandButton
-            />
-          ))}
+        <div className="flex flex-col items-center mt-2 w-full">
+          <div className="text-muted-foreground text-lg py-1">↓</div>
+          <div className="flex flex-wrap gap-4 justify-center mt-2">
+            {children.map((child) => (
+              <ReferralNodeItem
+                key={child.accountSequence}
+                node={child}
+                expandedNodes={expandedNodes}
+                onToggle={onToggle}
+                onClick={onClick}
+              />
+            ))}
+          </div>
         </div>
       )}
     </div>