feat: 添加令牌重置已用额度功能

- 后端新增 POST /api/admin/token/:key/reset 接口
- 前端令牌列表添加重置额度按钮（桌面端和移动端菜单）

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

frontend/src/api/client.ts

@@ -161,6 +161,9 @@ export const apiClient = {
   deleteToken: (key: string) =>
     request(`/api/admin/token/${encodeURIComponent(key)}`, { method: 'DELETE' }),
 
+  resetTokenUsage: (key: string) =>
+    request(`/api/admin/token/${encodeURIComponent(key)}/reset`, { method: 'POST' }),
+
   // Pricing APIs
   getPricing: () => request<ApiResponse>('/api/admin/pricing', { method: 'GET' }),
 

frontend/src/pages/Tokens.tsx

@@ -25,6 +25,7 @@ import {
   ChevronRight,
   AlertCircle,
   Search,
+  RotateCcw,
 } from 'lucide-react'
 import { Checkbox } from '@/components/ui/checkbox'
 import { PageContainer } from '@/components/ui/page-container'
@@ -106,6 +107,19 @@ export function Tokens() {
     },
   })
 
+  const resetUsageMutation = useMutation({
+    mutationFn: async (key: string) => {
+      return apiClient.resetTokenUsage(key)
+    },
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['tokens'] })
+      addToast('已用额度已重置', 'success')
+    },
+    onError: (error: any) => {
+      addToast('重置失败：' + error.message, 'error')
+    },
+  })
+
   const resetForm = () => {
     setFormData({ name: '', channel_keys: [], total_quota: 0 })
     setTokenKey('')
@@ -137,6 +151,12 @@ export function Tokens() {
     }
   }
 
+  const handleResetUsage = (key: string) => {
+    if (confirm(`确定要重置此令牌的已用额度吗？`)) {
+      resetUsageMutation.mutate(key)
+    }
+  }
+
   const handleCopy = async (text: string) => {
     try {
       await copyToClipboard(text)
@@ -318,6 +338,13 @@ export function Tokens() {
                                 <Pencil className="h-4 w-4" />
                                 编辑
                               </button>
+                              <button
+                                className="w-full px-3 py-2 text-sm text-left hover:bg-muted flex items-center gap-2"
+                                onClick={() => handleResetUsage(token.key)}
+                              >
+                                <RotateCcw className="h-4 w-4" />
+                                重置额度
+                              </button>
                               <button
                                 className="w-full px-3 py-2 text-sm text-left hover:bg-muted flex items-center gap-2 text-destructive"
                                 onClick={() => handleDelete(token.key)}
@@ -389,10 +416,13 @@ export function Tokens() {
                         </div>
                       </div>
                       <div className="flex items-center gap-1 flex-shrink-0">
-                        <Button variant="ghost" size="icon" className="h-8 w-8" onClick={() => handleEdit(token)}>
+                        <Button variant="ghost" size="icon" className="h-8 w-8" onClick={() => handleEdit(token)} title="编辑">
                           <Pencil className="h-4 w-4" />
                         </Button>
-                        <Button variant="ghost" size="icon" className="h-8 w-8 text-destructive hover:text-destructive" onClick={() => handleDelete(token.key)}>
+                        <Button variant="ghost" size="icon" className="h-8 w-8" onClick={() => handleResetUsage(token.key)} title="重置额度">
+                          <RotateCcw className="h-4 w-4" />
+                        </Button>
+                        <Button variant="ghost" size="icon" className="h-8 w-8 text-destructive hover:text-destructive" onClick={() => handleDelete(token.key)} title="删除">
                           <Trash2 className="h-4 w-4" />
                         </Button>
                       </div>

src/admin/index.ts

@@ -5,7 +5,7 @@ import {
     ChannelGetEndpoint, ChannelUpsertEndpoint, ChannelDeleteEndpoint
 } from "./channel_api"
 import {
-    TokenListEndpoint, TokenUpsertEndpoint, TokenDeleteEndpoint
+    TokenListEndpoint, TokenUpsertEndpoint, TokenDeleteEndpoint, TokenResetUsageEndpoint
 } from "./token_api"
 import {
     PricingGetEndpoint, PricingUpdateEndpoint
@@ -34,6 +34,7 @@ api.delete("/api/admin/channel/:key", ChannelDeleteEndpoint)
 // Token management routes
 api.get("/api/admin/token", TokenListEndpoint)
 api.post("/api/admin/token/:key", TokenUpsertEndpoint)
+api.post("/api/admin/token/:key/reset", TokenResetUsageEndpoint)
 api.delete("/api/admin/token/:key", TokenDeleteEndpoint)
 
 // Pricing management routes

src/admin/token_api.ts

@@ -98,6 +98,36 @@ export class TokenUpsertEndpoint extends OpenAPIRoute {
     }
 }
 
+// Token 重置额度 API
+export class TokenResetUsageEndpoint extends OpenAPIRoute {
+    schema = {
+        tags: ['Admin API'],
+        summary: 'Reset token usage to zero',
+        request: {
+            params: z.object({
+                key: z.string().describe('Token key'),
+            }),
+        },
+        responses: {
+            ...CommonSuccessfulResponse(z.boolean()),
+            ...CommonErrorResponse,
+        },
+    };
+
+    async handle(c: Context<HonoCustomType>) {
+        const { key } = c.req.param();
+
+        const result = await c.env.DB.prepare(
+            `UPDATE api_token SET usage = 0, updated_at = datetime('now') WHERE key = ?`
+        ).bind(key).run();
+
+        return {
+            success: true,
+            data: result.success
+        } as CommonResponse;
+    }
+}
+
 // Token 删除 API
 export class TokenDeleteEndpoint extends OpenAPIRoute {
     schema = {