Refactor management components to remove loading state: Eliminate unused loading state and related conditional rendering from ChallengeManagement, EventManagement, FeedbackManagement, HouseManagement, and UserManagement components, simplifying the code and improving readability.

components/admin/ChallengeManagement.tsx

@@ -1,6 +1,6 @@
 "use client";
 
-import { useEffect, useState, useTransition } from "react";
+import { useState, useTransition } from "react";
 import {
   validateChallenge,
   rejectChallenge,
@@ -48,7 +48,6 @@ interface ChallengeManagementProps {
 
 export default function ChallengeManagement({ initialChallenges }: ChallengeManagementProps) {
   const [challenges, setChallenges] = useState<Challenge[]>(initialChallenges);
-  const [loading, setLoading] = useState(false);
   const [selectedChallenge, setSelectedChallenge] = useState<Challenge | null>(
     null
   );
@@ -260,12 +259,6 @@ export default function ChallengeManagement({ initialChallenges }: ChallengeMana
     });
   };
 
-  if (loading) {
-    return (
-      <div className="text-center text-pixel-gold py-8">Chargement...</div>
-    );
-  }
-
   if (challenges.length === 0) {
     return <div className="text-center text-gray-400 py-8">Aucun défi</div>;
   }

components/admin/EventManagement.tsx

@@ -1,6 +1,6 @@
 "use client";
 
-import { useState, useEffect, useTransition } from "react";
+import { useState, useTransition } from "react";
 import { calculateEventStatus } from "@/lib/eventStatus";
 import { createEvent, updateEvent, deleteEvent } from "@/actions/admin/events";
 import {
@@ -98,7 +98,6 @@ interface EventManagementProps {
 
 export default function EventManagement({ initialEvents }: EventManagementProps) {
   const [events, setEvents] = useState<Event[]>(initialEvents);
-  const [loading, setLoading] = useState(false);
   const [editingEvent, setEditingEvent] = useState<Event | null>(null);
   const [isCreating, setIsCreating] = useState(false);
   const [saving, setSaving] = useState(false);
@@ -304,10 +303,6 @@ export default function EventManagement({ initialEvents }: EventManagementProps)
     });
   };
 
-  if (loading) {
-    return <div className="text-center text-gray-400 py-8">Chargement...</div>;
-  }
-
   return (
     <div className="space-y-4">
       <div className="flex flex-col sm:flex-row sm:justify-between sm:items-center gap-3 mb-4">

components/admin/FeedbackManagement.tsx

@@ -1,6 +1,6 @@
 "use client";
 
-import { useState, useEffect } from "react";
+import { useState } from "react";
 import {
   addFeedbackBonusPoints,
   markFeedbackAsRead,
@@ -49,7 +49,6 @@ export default function FeedbackManagement({
 }: FeedbackManagementProps) {
   const [feedbacks, setFeedbacks] = useState<Feedback[]>(initialFeedbacks);
   const [statistics, setStatistics] = useState<EventStatistics[]>(initialStatistics);
-  const [loading, setLoading] = useState(false);
   const [error, setError] = useState("");
   const [selectedEvent, setSelectedEvent] = useState<string | null>(null);
   const [addingPoints, setAddingPoints] = useState<Record<string, boolean>>(
@@ -161,14 +160,6 @@ export default function FeedbackManagement({
     );
   });
 
-  if (loading) {
-    return (
-      <div className="bg-black/60 border border-pixel-gold/30 rounded-lg p-4 sm:p-8">
-        <p className="text-gray-400 text-center text-sm">Chargement...</p>
-      </div>
-    );
-  }
-
   return (
     <div className="space-y-4 sm:space-y-6">
       {/* Statistiques par événement */}

components/admin/HouseManagement.tsx

@@ -1,6 +1,6 @@
 "use client";
 
-import { useState, useEffect, useTransition } from "react";
+import { useState, useTransition } from "react";
 import {
   Input,
   Textarea,
@@ -77,7 +77,6 @@ interface HouseManagementProps {
 
 export default function HouseManagement({ initialHouses }: HouseManagementProps) {
   const [houses, setHouses] = useState<House[]>(initialHouses);
-  const [loading, setLoading] = useState(false);
   const [editingHouse, setEditingHouse] = useState<House | null>(null);
   const [saving, setSaving] = useState(false);
   const [deletingHouseId, setDeletingHouseId] = useState<string | null>(null);
@@ -216,10 +215,6 @@ export default function HouseManagement({ initialHouses }: HouseManagementProps)
     return num.toLocaleString("en-US");
   };
 
-  if (loading) {
-    return <div className="text-center text-gray-400 py-8">Chargement...</div>;
-  }
-
   return (
     <div className="space-y-4">
       <div className="flex flex-col sm:flex-row sm:justify-between sm:items-center gap-3 mb-4">

components/admin/UserManagement.tsx

@@ -1,6 +1,6 @@
 "use client";
 
-import { useState, useEffect, useTransition } from "react";
+import { useState, useTransition } from "react";
 import {
   Avatar,
   Input,
@@ -43,7 +43,6 @@ interface UserManagementProps {
 
 export default function UserManagement({ initialUsers }: UserManagementProps) {
   const [users, setUsers] = useState<User[]>(initialUsers);
-  const [loading, setLoading] = useState(false);
   const [editingUser, setEditingUser] = useState<EditingUser | null>(null);
   const [saving, setSaving] = useState(false);
   const [deletingUserId, setDeletingUserId] = useState<string | null>(null);
@@ -183,10 +182,6 @@ export default function UserManagement({ initialUsers }: UserManagementProps) {
       ? Math.max(0, currentEditingUserData.xp + editingUser.xpDelta)
       : 0;
 
-  if (loading) {
-    return <div className="text-center text-gray-400 py-8">Chargement...</div>;
-  }
-
   return (
     <div className="space-y-4">
       {users.length === 0 ? (