feat: Implement core backend server with file upload, monitoring, S2A API proxy, and team processing features.

frontend/src/components/upload/FileDropzone.tsx

@@ -98,7 +98,7 @@ export default function FileDropzone({ onFileSelect, disabled = false, error }:
           </div>
 
           <div className="text-xs text-slate-400 dark:text-slate-500">
-            支持格式: [&#123;"account": "email", "password": "pwd", "token": "..."&#125;]
+            支持格式: JSON 数组/单对象/JSONL（支持注释与末尾逗号）
           </div>
         </div>
       </div>

frontend/src/pages/Monitor.tsx

@@ -65,31 +65,29 @@ export default function Monitor() {
     const [pollingEnabled, setPollingEnabled] = useState(false)
     const [pollingInterval, setPollingInterval] = useState(60)
 
-    // 使用后端代理路径
-    const proxyBase = '/api/s2a/proxy'
+    // 监控接口属于本地后端服务（通常在 8088 端口）
+    const localBase = window.location.protocol + '//' + window.location.hostname + ':8088'
 
-    // 辅助函数：解包 S2A 响应
-    const requestS2A = async (url: string, options: RequestInit = {}) => {
-        const res = await fetch(url, options)
+    // 辅助函数：处理本地请求
+    const requestLocal = async (path: string, options: RequestInit = {}) => {
+        const res = await fetch(`${localBase}${path}`, options)
         if (!res.ok) throw new Error(`HTTP ${res.status}`)
-        const data = await res.json()
-        if (data && typeof data === 'object' && 'code' in data && 'data' in data) {
-            if (data.code !== 0) throw new Error(data.message || 'API error')
-            return data.data
-        }
-        return data
+        return res.json()
     }
 
     // 获取号池状态
     const fetchPoolStatus = useCallback(async () => {
         try {
-            const data = await requestS2A(`${proxyBase}/api/pool/status`)
-            setPoolStatus(data)
-            setTargetInput(data.target)
-            setAutoAdd(data.auto_add)
-            setMinInterval(data.min_interval)
-            setPollingEnabled(data.polling_enabled)
-            setPollingInterval(data.polling_interval)
+            const res = await requestLocal('/api/pool/status')
+            if (res.code === 0) {
+                const data = res.data
+                setPoolStatus(data)
+                setTargetInput(data.target)
+                setAutoAdd(data.auto_add)
+                setMinInterval(data.min_interval)
+                setPollingEnabled(data.polling_enabled)
+                setPollingInterval(data.polling_interval)
+            }
         } catch (e) {
             console.error('获取号池状态失败:', e)
         }
@@ -99,8 +97,10 @@ export default function Monitor() {
     const refreshStats = useCallback(async () => {
         setRefreshing(true)
         try {
-            const data = await requestS2A(`${proxyBase}/api/pool/refresh`, { method: 'POST' })
-            setStats(data)
+            const res = await requestLocal('/api/pool/refresh', { method: 'POST' })
+            if (res.code === 0) {
+                setStats(res.data)
+            }
             await fetchPoolStatus()
         } catch (e) {
             console.error('刷新统计失败:', e)
@@ -112,7 +112,7 @@ export default function Monitor() {
     const handleSetTarget = async () => {
         setLoading(true)
         try {
-            await requestS2A(`${proxyBase}/api/pool/target`, {
+            await requestLocal('/api/pool/target', {
                 method: 'POST',
                 headers: { 'Content-Type': 'application/json' },
                 body: JSON.stringify({
@@ -132,7 +132,7 @@ export default function Monitor() {
     const handleTogglePolling = async () => {
         setLoading(true)
         try {
-            await requestS2A(`${proxyBase}/api/pool/polling`, {
+            await requestLocal('/api/pool/polling', {
                 method: 'POST',
                 headers: { 'Content-Type': 'application/json' },
                 body: JSON.stringify({
@@ -152,7 +152,7 @@ export default function Monitor() {
     const handleHealthCheck = async (autoPause: boolean = false) => {
         setCheckingHealth(true)
         try {
-            await requestS2A(`${proxyBase}/api/health-check/start`, {
+            await requestLocal('/api/health-check/start', {
                 method: 'POST',
                 headers: { 'Content-Type': 'application/json' },
                 body: JSON.stringify({ auto_pause: autoPause }),
@@ -160,8 +160,10 @@ export default function Monitor() {
             // 等待一会儿再获取结果
             setTimeout(async () => {
                 try {
-                    const data = await requestS2A(`${proxyBase}/api/health-check/results`)
-                    setHealthResults(data || [])
+                    const res = await requestLocal('/api/health-check/results')
+                    if (res.code === 0) {
+                        setHealthResults(res.data || [])
+                    }
                 } catch (e) {
                     console.error('获取健康检查结果失败:', e)
                 }
@@ -176,8 +178,10 @@ export default function Monitor() {
     // 获取自动补号日志
     const fetchAutoAddLogs = async () => {
         try {
-            const data = await requestS2A(`${proxyBase}/api/auto-add/logs`)
-            setAutoAddLogs(data || [])
+            const res = await requestLocal('/api/auto-add/logs')
+            if (res.code === 0) {
+                setAutoAddLogs(res.data || [])
+            }
         } catch (e) {
             console.error('获取日志失败:', e)
         }

frontend/src/pages/Upload.tsx

@@ -120,13 +120,10 @@ export default function Upload() {
 
       try {
         const text = await file.text()
-        const json = JSON.parse(text)
-        const accounts = Array.isArray(json) ? json : [json]
-
         const res = await fetch('/api/upload/validate', {
           method: 'POST',
           headers: { 'Content-Type': 'application/json' },
-          body: JSON.stringify({ accounts }),
+          body: JSON.stringify({ content: text, filename: file.name }),
         })
 
         const data = await res.json()