feat: 优化游戏体验和系统平衡性

- 修复商店物品名称显示问题，添加堆叠物品出售数量选择
- 自动战斗状态持久化，战斗结束显示"寻找中"状态
- 战斗日志显示经验获取详情（战斗经验、武器经验）
- 技能进度条显示当前/最大经验值
- 阅读自动解锁技能并持续获得阅读经验，背包可直接阅读
- 优化训练平衡：时长60秒，经验5点/秒，耐力消耗降低
- 实现自然回复系统：基于体质回复HP/耐力，休息提供3倍加成
- 战斗和训练时不进行自然回复

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

components/panels/StatusPanel.vue

@@ -139,6 +139,7 @@
             height="8rpx"
             :showText="false"
           />
+          <text class="skill-item__progress">{{ skill.exp }}/{{ skill.maxExp }}</text>
         </view>
       </view>
       <view v-if="filteredSkills.length === 0" class="skill-empty">
@@ -261,7 +262,7 @@ import { usePlayerStore } from '@/store/player'
 import { useGameStore } from '@/store/game'
 import { SKILL_CONFIG } from '@/config/skills'
 import { ITEM_CONFIG } from '@/config/items'
-import { startTask } from '@/utils/taskSystem'
+import { startTask, endTask } from '@/utils/taskSystem'
 import { getSkillDisplayInfo } from '@/utils/skillSystem'
 import ProgressBar from '@/components/common/ProgressBar.vue'
 import StatItem from '@/components/common/StatItem.vue'
@@ -426,7 +427,7 @@ const trainingTask = computed(() => {
 function startTraining(skill) {
   const result = startTask(game, player, 'training', {
     skillId: skill.id,
-    duration: 300  // 5分钟
+    duration: 60  // 1分钟
   })
 
   if (result.success) {
@@ -438,7 +439,6 @@ function startTraining(skill) {
 
 function stopTraining() {
   if (trainingTask.value) {
-    const { endTask } = require('@/utils/taskSystem')
     endTask(game, player, trainingTask.value.taskId, false)
     game.addLog('停止了训练', 'info')
   }
@@ -631,6 +631,15 @@ function cancelActiveTask(task) {
   &__bar {
     flex: 1;
     min-width: 0;
+    display: flex;
+    flex-direction: column;
+    gap: 4rpx;
+  }
+
+  &__progress {
+    color: $text-muted;
+    font-size: 20rpx;
+    text-align: right;
   }
 }