feat(ui): add cv application frontend and configuration

src/admin/hooks/AuthContext.jsx

@@ -0,0 +1,61 @@
+import { createContext, useContext, useState, useEffect, useCallback } from 'react';
+import { getAuthConfig, login } from '../../lib/api';
+import { getToken, setToken, clearToken } from '../../lib/auth';
+
+const AuthContext = createContext(null);
+
+export function AuthProvider({ children }) {
+  const [isAuthenticated, setIsAuthenticated] = useState(false);
+  const [authMode, setAuthMode] = useState(null);
+  const [keycloakConfig, setKeycloakConfig] = useState(null);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    getAuthConfig()
+      .then((config) => {
+        setAuthMode(config.mode);
+        setKeycloakConfig(config.keycloak);
+        
+        if (config.mode === 'simple') {
+          const token = getToken();
+          setIsAuthenticated(!!token);
+        }
+      })
+      .catch(console.error)
+      .finally(() => setLoading(false));
+  }, []);
+
+  const simpleLogin = useCallback(async (password) => {
+    const result = await login(password);
+    setToken(result.token);
+    setIsAuthenticated(true);
+    return result;
+  }, []);
+
+  const logout = useCallback(() => {
+    clearToken();
+    setIsAuthenticated(false);
+  }, []);
+
+  return (
+    <AuthContext.Provider value={{
+      isAuthenticated,
+      authMode,
+      keycloakConfig,
+      loading,
+      login: simpleLogin,
+      logout,
+    }}>
+      {children}
+    </AuthContext.Provider>
+  );
+}
+
+// eslint-disable-next-line react-refresh/only-export-components
+export function useAuth() {
+  const context = useContext(AuthContext);
+  if (!context) {
+    throw new Error('useAuth must be used within AuthProvider');
+  }
+  return context;
+}