feat(DiaryDateActivity): enhance group activity management with duration and order features

- Added `duration`, `durationText`, and `orderId` fields to the GroupActivity model to support detailed activity tracking.
- Updated `addGroupActivity` and `updateGroupActivity` methods in the DiaryDateActivityService to handle new fields, improving activity management capabilities.
- Enhanced the DiaryView component to allow users to input and display duration and duration text for group activities, improving user experience and data clarity.

frontend/src/views/DiaryView.vue

@@ -471,7 +471,23 @@
                                                 </select>
                                             </div>
                                         </td>
-                                        <td></td>
+                                        <td>
+                                            <div style="display:flex; gap:0.35rem; align-items:center;">
+                                                <input
+                                                    type="text"
+                                                    v-model="newPlanItem.durationText"
+                                                    @input="calculateDuration"
+                                                    :placeholder="$t('diary.durationExampleLong')"
+                                                    style="width: 120px;"
+                                                />
+                                                <input
+                                                    type="number"
+                                                    v-model="newPlanItem.duration"
+                                                    :placeholder="$t('diary.minutes')"
+                                                    style="width: 72px;"
+                                                />
+                                            </div>
+                                        </td>
                                         <td>
                                             <span class="add-plan-item" @click="addPlanItem">+</span>
                                             <span class="cancel" @click="cancelAddItem">X</span>
@@ -479,7 +495,12 @@
                                     </tr>
                                     <template v-for="groupItem in item.groupActivities">
                                         <tr class="plan-group-activity-row">
-                                            <td></td>
+                                            <td>
+                                                <span class="clickable" @click="startGroupActivityEdit(groupItem)">
+                                                    {{ groupItem.duration || '' }}<span
+                                                        v-if="groupItem.durationText && groupItem.durationText.trim() !== ''"> ({{ groupItem.durationText }})</span>
+                                                </span>
+                                            </td>
                                             <td></td>
                                             <td>
                                                 <div class="plan-group-activity-cell">
@@ -2120,6 +2141,8 @@ export default {
                         predefinedActivityId: this.newPlanItem.predefinedActivityId,
                         groupId: Number(this.newPlanItem.groupId),
                         timeblockId: this.selectedTimeblockId,
+                        duration: this.newPlanItem.duration || null,
+                        durationText: this.newPlanItem.durationText || null
                     });
                 }
                 this.addNewTimeblock = false;