fix: resolve response format mismatches causing data loading failures in Dashboard, ImBots, Promotion, Knowledge pages

frontend/src/pages/admin/Dashboard.tsx

@@ -131,13 +131,24 @@ const Dashboard: React.FC = () => {
         const [statsRes, dailyRes, logsRes, auditRes] = await Promise.all([
           adminAPI.getStats() as any,
           (adminAPI as any).getDailyStats?.(30) || Promise.resolve({ data: [] }),
-          adminAPI.getRecentLogs(),
-          adminAPI.getRecentAudit(),
+          adminAPI.getRecentLogs() as any,
+          adminAPI.getRecentAudit() as any,
         ]);
-        if (statsRes.data) setStats(statsRes.data);
-        if (dailyRes.data) setDailyStats(dailyRes.data || []);
-        if (logsRes.data) setOperationLogs(Array.isArray(logsRes.data) ? logsRes.data : []);
-        if (auditRes.data) setAuditLogs(Array.isArray(auditRes.data) ? auditRes.data : []);
+        // Stats: backend returns raw dict (no {code,data} wrapper) — use .data or the response itself
+        const statsData = statsRes?.data || statsRes;
+        if (statsData && typeof statsData === 'object') setStats(statsData);
+
+        // Daily stats: backend returns {code, data: {days, data: [...]}} — access nested .data.data
+        const dailyData = dailyRes?.data?.data || (Array.isArray(dailyRes?.data) ? dailyRes.data : []) || [];
+        setDailyStats(Array.isArray(dailyData) ? dailyData : []);
+
+        // Recent logs: backend returns raw list (no wrapper) — use the response directly if it's an array
+        const logsData = Array.isArray(logsRes) ? logsRes : (Array.isArray(logsRes?.data) ? logsRes.data : []);
+        setOperationLogs(logsData);
+
+        // Recent audit: same as logs
+        const auditData = Array.isArray(auditRes) ? auditRes : (Array.isArray(auditRes?.data) ? auditRes.data : []);
+        setAuditLogs(auditData);
       } catch (err) {
         console.error('Dashboard数据加载失败:', err);
       } finally {