클라이언트 대시보드 통계 실지표 연동 및 백엔드 API 구현

devfront/src/features/clients/ClientsPage.tsx

@@ -9,6 +9,7 @@ import {
   ShieldHalf,
 } from "lucide-react";
 import { useState } from "react";
+import { useAuth } from "react-oidc-context";
 import { Link, useNavigate } from "react-router-dom";
 import {
   Avatar,
@@ -34,15 +35,29 @@ import {
   TableHeader,
   TableRow,
 } from "../../components/ui/table";
-import { fetchClients } from "../../lib/devApi";
+import { fetchClients, fetchDevStats } from "../../lib/devApi";
 import { t } from "../../lib/i18n";
 import { cn } from "../../lib/utils";
 
 function ClientsPage() {
   const navigate = useNavigate();
-  const { data, isLoading, error } = useQuery({
+  const auth = useAuth();
+  const hasAccessToken = Boolean(auth.user?.access_token);
+
+  const {
+    data,
+    isLoading: isLoadingClients,
+    error: clientError,
+  } = useQuery({
     queryKey: ["clients"],
     queryFn: fetchClients,
+    enabled: hasAccessToken,
+  });
+
+  const { data: statsData, isLoading: isLoadingStats } = useQuery({
+    queryKey: ["dev-stats"],
+    queryFn: fetchDevStats,
+    enabled: hasAccessToken,
   });
 
   const [searchQuery, setSearchQuery] = useState("");
@@ -63,11 +78,10 @@ function ClientsPage() {
     return matchesSearch && matchesType && matchesStatus;
   });
 
-  const totalClients = clients.length;
-  const activeClients = clients.filter(
-    (client) => client.status === "active",
-  ).length;
-  // TODO: Replace with real session/auth-failure metrics when backend endpoints are available.
+  const totalClients = statsData?.total_clients ?? clients.length;
+  const activeSessions = statsData?.active_sessions ?? 0;
+  const authFailures = statsData?.auth_failures_24h ?? 0;
+
   type StatTone = "up" | "down" | "stable";
   type StatItem = {
     labelKey: string;
@@ -90,7 +104,7 @@ function ClientsPage() {
     {
       labelKey: "ui.dev.clients.stats.active_sessions",
       labelFallback: "Active Sessions",
-      value: activeClients.toString(),
+      value: activeSessions.toString(),
       deltaKey: "ui.dev.clients.stats.realtime",
       deltaFallback: "Realtime",
       tone: "up" as const,
@@ -98,14 +112,16 @@ function ClientsPage() {
     {
       labelKey: "ui.dev.clients.stats.auth_failures",
       labelFallback: "Auth Failures (24h)",
-      value: "0",
-      deltaKey: "ui.dev.clients.stats.stable",
-      deltaFallback: "Stable",
-      tone: "stable" as const,
+      value: authFailures.toString(),
+      deltaKey: authFailures > 0 ? "ui.dev.clients.stats.alert" : "ui.dev.clients.stats.stable",
+      deltaFallback: authFailures > 0 ? "Check Logs" : "Stable",
+      tone: authFailures > 0 ? ("down" as const) : ("stable" as const),
     },
   ];
 
-  if (isLoading) {
+  const isLoading = isLoadingClients || isLoadingStats;
+
+  if (auth.isLoading || !hasAccessToken || isLoading) {
     return (
       <div className="p-8 text-center">
         {t("msg.dev.clients.loading", "Loading clients...")}
@@ -113,10 +129,10 @@ function ClientsPage() {
     );
   }
 
-  if (error) {
+  if (clientError) {
     const errMsg =
-      (error as AxiosError<{ error?: string }>).response?.data?.error ??
-      (error as Error).message;
+      (clientError as AxiosError<{ error?: string }>).response?.data?.error ??
+      (clientError as Error).message;
     return (
       <div className="p-8 text-center text-red-500">
         {t("msg.dev.clients.load_error", "Error loading clients: {{error}}", {
@@ -268,7 +284,13 @@ function ClientsPage() {
                   <div className="mt-1 flex items-baseline gap-2">
                     <span className="text-3xl font-bold">{item.value}</span>
                     <Badge
-                      variant={item.tone === "up" ? "success" : "muted"}
+                      variant={
+                        item.tone === "up" 
+                          ? "success" 
+                          : item.tone === "down" 
+                          ? "destructive" 
+                          : "muted"
+                      }
                       className={cn(
                         "px-2",
                         item.tone === "stable" && "bg-muted/40 text-foreground",

devfront/src/lib/devApi.ts

@@ -20,6 +20,12 @@ export type ClientListResponse = {
   offset: number;
 };
 
+export type DevStats = {
+  total_clients: number;
+  active_sessions: number;
+  auth_failures_24h: number;
+};
+
 export type DevAuditLog = {
   event_id: string;
   timestamp: string;
@@ -121,6 +127,11 @@ export async function fetchClients() {
   return data;
 }
 
+export async function fetchDevStats() {
+  const { data } = await apiClient.get<DevStats>("/dev/stats");
+  return data;
+}
+
 export async function fetchClient(clientId: string) {
   const { data } = await apiClient.get<ClientDetailResponse>(
     `/dev/clients/${clientId}`,