feat(Editor): Nouveau composant QuestionEditorDialog

- Dialogue modal pour l'ajout/édition de questions

- Support complet de l'upload et preview des médias (Image/Vidéo/Audio)

- Gestion des paramètres de question (points, autoplay, loop...)

- Gestion des notes pour le maître du jeu

VApp/src/components/QuestionEditorDialog.vue

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+<template>
+    <v-dialog v-model="visible" persistent max-width="800px">
+      <v-card rounded="xl" class="pa-3">
+        <v-card-title class="text-title-style">
+            {{ isNew ? 'Nouvelle question' : 'Éditer la question' }}
+        </v-card-title>
+        <v-card-text>
+          <v-container>
+            <v-row>
+              <v-col cols="12" md="4">
+                <v-text-field color="primary" density="compact" variant="outlined" rounded="xl" v-model="editedItem.QuestionId" label="ID Question" hint="Unique ID, ex: Q-005"></v-text-field>
+              </v-col>
+              <v-col cols="12" md="4">
+                <v-select color="primary" density="compact" variant="outlined" rounded="xl" v-model="editedItem.Type" :items="['video', 'audio', 'picture']" label="Type"></v-select>
+              </v-col>
+              <v-col cols="12" md="4">
+                <v-text-field color="primary" density="compact" variant="outlined" rounded="xl" v-model.number="editedItem.Points" type="number" label="Points"></v-text-field>
+              </v-col>
+              <v-col cols="12">
+                <v-textarea color="primary" variant="outlined" rounded="xl" v-model="editedItem.QuestionText" label="Texte de la question" rows="2"></v-textarea>
+              </v-col>
+              
+              <!-- Media Section -->
+              <v-col cols="12">
+                 <div class="d-flex align-center">
+                    <!-- Preview Section -->
+                    <div v-if="editedItem.MediaUrl" class="preview-box mr-4 text-center">
+                        <img v-if="editedItem.Type === 'picture'" :src="getPreviewUrl(editedItem.MediaUrl)" class="preview-content" @click="showFullPreview = true">
+                        <video 
+                            v-else-if="editedItem.Type === 'video'" 
+                            :src="getPreviewUrl(editedItem.MediaUrl)" 
+                            class="preview-content"
+                            @click="showVideoPreview = true"    
+                            @loadedmetadata="(e) => e.target.currentTime = e.target.duration / 3"
+                            muted
+                        ></video>
+                        <div v-else-if="editedItem.Type === 'audio'" class="text-caption" style="cursor: pointer;" @click="showAudioPreview = true">
+                            <v-icon size="64" color="primary">mdi-music</v-icon>
+                        </div>
+                    </div>
+                    
+                    <v-text-field color="primary" density="compact" variant="outlined" rounded="xl" v-model="editedItem.MediaUrl" label="URL du Média" class="flex-grow-2 mr-2" hide-details></v-text-field>
+                    <input 
+                        type="file" 
+                        ref="fileInputRef" 
+                        color="primary"
+                        style="display: none;" 
+                        @change="onFileSelected"
+                        accept="image/*,video/*,audio/*"
+                    />
+                    <v-btn 
+                        rounded="xl"
+                        variant="tonal" 
+                        color="primary"
+                        :loading="uploading"
+                        :disabled="!editedItem.Type"
+                        @click="$refs.fileInputRef.click()"
+                    >
+                        <v-icon start>mdi-upload</v-icon>
+                        Upload
+                    </v-btn>
+                    
+                    <v-btn
+                        v-if="editedItem.MediaUrl"
+                        rounded="xl"
+                        text="Supprimer"
+                        variant="tonal"
+                        color="red"
+                        class="ml-2"
+                        @click="deleteMedia"
+                        title="Supprimer le média"
+                    ></v-btn>
+                 </div>
+                 <div v-if="uploadError" class="text-caption text-red">{{ uploadError }}</div>
+              </v-col>
+
+              <v-col cols="12"><v-divider></v-divider></v-col>
+              <v-col cols="12" class="text-h6">Paramètres</v-col>
+              
+              <v-col cols="6" md="4">
+                  <v-switch inset v-model="editedItem.Settings.AutoPlay" label="AutoPlay" density="compact" color="primary"></v-switch>
+              </v-col>
+              <v-col cols="6" md="4">
+                  <v-switch inset v-model="editedItem.Settings.Loop" label="Loop" density="compact" color="primary"></v-switch>
+              </v-col>
+              <v-col cols="6" md="4">
+                  <v-text-field color="primary" variant="outlined" rounded="xl" v-model.number="editedItem.Settings.PlayTime" type="number" label="Durée (sec)" density="compact"></v-text-field>
+              </v-col>
+
+              <v-col cols="12"><v-divider></v-divider></v-col>
+              <v-label class="text-title-style">
+                Réponse (Maître du jeu)
+              </v-label>
+              <v-col cols="12" class="text-h6"></v-col>
+              
+              <v-col cols="12">
+                <v-text-field color="primary" variant="outlined" rounded="xl" v-model="editedItem.MasterData.CorrectAnswer" label="Réponse Correcte"></v-text-field>
+              </v-col>
+              <v-col cols="12">
+                <v-textarea color="primary" variant="outlined" rounded="xl" v-model="editedItem.MasterData.MasterNotes" label="Notes pour le MJ" rows="2"></v-textarea>
+              </v-col>
+              <v-col cols="12">
+                <v-textarea color="primary" variant="outlined" rounded="xl" v-model="editedItem.MasterData.Help" label="Indice / Aide" rows="2"></v-textarea>
+              </v-col>
+            </v-row>
+          </v-container>
+        </v-card-text>
+        <v-card-actions>
+          <v-spacer></v-spacer>
+          <v-btn color="primary" rounded="xl" variant="outlined" @click="close">Annuler</v-btn>
+          <v-btn color="success" rounded="xl" variant="outlined" @click="save">Ok</v-btn>
+        </v-card-actions>
+      </v-card>
+    </v-dialog>
+
+    <!-- Dialog Preview Image -->
+    <v-dialog v-model="showFullPreview" max-width="90vw">
+        <v-card rounded="xl" class="pa-2">
+            <v-card-text class="d-flex justify-center" style="padding: 16px;">
+                <v-img
+                    :src="getPreviewUrl(editedItem.MediaUrl)" 
+                    max-height="80vh"
+                    rounded="lg"
+                    @click="showFullPreview = false"
+                    style="cursor: pointer;"
+                ></v-img>
+            </v-card-text>
+            <v-card-actions>
+                <v-spacer></v-spacer>
+                <v-btn color="primary" variant="text" @click="showFullPreview = false">Fermer</v-btn>
+            </v-card-actions>
+        </v-card>
+    </v-dialog>
+
+    <!-- Dialog Preview Video -->
+    <v-dialog v-model="showVideoPreview" max-width="90vw">
+        <v-card rounded="xl" class="pa-2">
+            <v-card-text class="d-flex justify-center" style="padding: 16px;">
+                <video 
+                    :src="getPreviewUrl(editedItem.MediaUrl)" 
+                    controls
+                    autoplay
+                    disablepictureinpicture 
+                    disableremoteplayback
+                    controlslist="nodownload"
+                    style="max-width: 100%; max-height: 80vh; border-radius: 12px;"
+                ></video>
+            </v-card-text>
+            <v-card-actions>
+                <v-spacer></v-spacer>
+                <v-btn color="primary" variant="text" @click="showVideoPreview = false">Fermer</v-btn>
+            </v-card-actions>
+        </v-card>
+    </v-dialog>
+
+    <!-- Dialog Preview Audio -->
+    <v-dialog v-model="showAudioPreview" max-width="500px">
+        <v-card rounded="xl" class="pa-4">
+            <v-card-title class="text-center">
+                <v-icon size="64" color="primary">mdi-music-circle</v-icon>
+            </v-card-title>
+            <v-card-text class="d-flex justify-center" style="padding: 16px;">
+                <audio 
+                    :src="getPreviewUrl(editedItem.MediaUrl)" 
+                    controls
+                    controlslist="nodownload"
+                    disablepictureinpicture 
+                    disableremoteplayback
+                    autoplay
+                    style="width: 100%;"
+                ></audio>
+            </v-card-text>
+            <v-card-actions>
+                <v-spacer></v-spacer>
+                <v-btn color="primary" variant="text" @click="showAudioPreview = false">Fermer</v-btn>
+            </v-card-actions>
+        </v-card>
+    </v-dialog>
+</template>
+
+<script setup>
+import { ref, reactive, watch, computed } from 'vue';
+import axios from 'axios';
+
+const props = defineProps({
+    modelValue: Boolean,
+    question: {
+        type: Object,
+        default: null
+    },
+    sessionId: {
+        type: String,
+        required: true
+    },
+    apiUrl: {
+        type: String,
+        required: true
+    },
+    nextIndex: {
+        type: Number,
+        default: 1
+    }
+});
+
+const emit = defineEmits(['update:modelValue', 'save', 'delete-media']);
+
+const visible = computed({
+    get: () => props.modelValue,
+    set: (val) => emit('update:modelValue', val)
+});
+
+const defaultQuestion = {
+  QuestionId: '',
+  Type: '',
+  Points: 1,
+  QuestionText: '',
+  MediaUrl: '',
+  Settings: {
+    StartAt: null,
+    StopAt: null,
+    AutoPlay: false,
+    Loop: false,
+    PlayTime: null,
+    DisplayMode: 'Cover',
+    BlurEffect: false
+  },
+  MasterData: {
+    CorrectAnswer: '',
+    MasterNotes: '',
+    Help: ''
+  }
+};
+
+const editedItem = reactive(JSON.parse(JSON.stringify(defaultQuestion)));
+// Copy question data when opening
+watch(() => props.modelValue, (val) => {
+    if (val) {
+        if (props.question) {
+            Object.assign(editedItem, JSON.parse(JSON.stringify(props.question)));
+            // Ensure nested objects exist
+            if(!editedItem.Settings) editedItem.Settings = {...defaultQuestion.Settings};
+            if(!editedItem.MasterData) editedItem.MasterData = {...defaultQuestion.MasterData};
+        } else {
+            Object.assign(editedItem, JSON.parse(JSON.stringify(defaultQuestion)));
+            // Auto-generate ID: Q-005 for 5th question
+            const idNumber = props.nextIndex.toString().padStart(3, '0');
+            editedItem.QuestionId = `Q-${idNumber}`; 
+        }
+        uploadError.value = '';
+    }
+});
+
+const isNew = computed(() => !props.question);
+
+const showFullPreview = ref(false);
+const showVideoPreview = ref(false);
+const showAudioPreview = ref(false);
+const uploading = ref(false);
+const uploadError = ref('');
+
+function close() {
+    visible.value = false;
+}
+
+function save() {
+    emit('save', JSON.parse(JSON.stringify(editedItem)));
+    close();
+}
+
+function getPreviewUrl(relativePath) {
+    if (!relativePath || relativePath.startsWith('http')) return relativePath;
+    return `${props.apiUrl}/quizz/${props.sessionId}${relativePath}`;
+}
+
+// Upload Handling
+const fileInputRef = ref(null);
+
+function onFileSelected(event) {
+    const file = event.target.files[0];
+    if (file) handleFileUpload(file);
+    event.target.value = '';
+}
+
+async function handleFileUpload(file) {
+    if (!file) return;
+    
+    uploading.value = true;
+    uploadError.value = '';
+
+    if (!editedItem.Type) {
+        uploadError.value = "Veuillez sélectionner un Type avant d'uploader un fichier.";
+        uploading.value = false;
+        return;
+    }
+    
+    try {
+        const formData = new FormData();
+        formData.append('questionId', editedItem.QuestionId);
+        formData.append('type', editedItem.Type);
+        formData.append('file', file);
+        
+        const response = await axios.post(`${props.apiUrl}/upload/${props.sessionId}`, formData);
+        
+        if (response.data && response.data.path) {
+            editedItem.MediaUrl = response.data.path;
+        }
+    } catch (e) {
+        console.error("Upload error:", e);
+        uploadError.value = "Erreur lors de l'upload du fichier.";
+    } finally {
+        uploading.value = false;
+    }
+}
+
+function deleteMedia() {
+    if (!editedItem.MediaUrl) return;
+
+    if (confirm('Voulez-vous vraiment supprimer ce média ? Cette action est irréversible.')) {
+        emit('delete-media', editedItem.MediaUrl);
+        editedItem.MediaUrl = ''; 
+    }
+}
+</script>
+
+<style scoped>
+    .text-title-style {
+        color: rgb(var(--v-theme-primary), 1) !important; 
+        opacity: 1;
+        font-size: 20px;
+        font-weight: bold;
+    }
+    
+    .preview-box {
+        width: 120px; 
+        height: 120px; 
+        background: #333; 
+        display: flex; 
+        align-items: center; 
+        justify-content: center; 
+        overflow: hidden; 
+        border-radius: 8px; 
+        position: relative;
+        flex-shrink: 0;
+    }
+
+    .preview-content {
+        width: 100%; 
+        height: 100%; 
+        object-fit: cover; 
+        cursor: pointer;
+    }
+</style>