refactor: 优化主界面布局与通知系统

重构App.vue，首页独立无侧边栏，其他页面采用统一侧边栏布局。新增右下角固定通知区，集成返回顶部、队列通知、外交通知和敌方警报。移除新手引导组件，替换为弱引导提示系统。支持星球重命名弹窗。优化NPC成长与行为定时器逻辑，提升性能和可维护性。删除issue模板及相关文档描述。

src/components/PrivacyDialog.vue

@@ -0,0 +1,90 @@
+<template>
+  <Dialog v-model:open="open">
+    <DialogContent class="max-w-2xl max-h-[80vh] overflow-hidden flex flex-col">
+      <DialogHeader>
+        <DialogTitle>{{ t('privacy.title') }}</DialogTitle>
+        <DialogDescription class="sr-only">{{ t('privacy.title') }}</DialogDescription>
+      </DialogHeader>
+      <div class="flex-1 overflow-y-auto pr-2 space-y-4 text-sm">
+        <!-- 简介 -->
+        <section>
+          <h3 class="font-semibold mb-1">{{ t('privacy.sections.introduction.title') }}</h3>
+          <p class="text-muted-foreground">{{ t('privacy.sections.introduction.content') }}</p>
+        </section>
+
+        <!-- 数据收集 -->
+        <section>
+          <h3 class="font-semibold mb-1">{{ t('privacy.sections.dataCollection.title') }}</h3>
+          <p class="text-muted-foreground mb-1">{{ t('privacy.sections.dataCollection.content') }}</p>
+          <ul class="list-disc list-inside text-muted-foreground ml-2 space-y-0.5">
+            <li>{{ t('privacy.sections.dataCollection.items.gameProgress') }}</li>
+            <li>{{ t('privacy.sections.dataCollection.items.settings') }}</li>
+            <li>{{ t('privacy.sections.dataCollection.items.language') }}</li>
+          </ul>
+        </section>
+
+        <!-- 数据存储 -->
+        <section>
+          <h3 class="font-semibold mb-1">{{ t('privacy.sections.dataStorage.title') }}</h3>
+          <p class="text-muted-foreground">{{ t('privacy.sections.dataStorage.content') }}</p>
+        </section>
+
+        <!-- 无服务器通信 -->
+        <section>
+          <h3 class="font-semibold mb-1">{{ t('privacy.sections.noServer.title') }}</h3>
+          <p class="text-muted-foreground">{{ t('privacy.sections.noServer.content') }}</p>
+        </section>
+
+        <!-- 第三方服务 -->
+        <section>
+          <h3 class="font-semibold mb-1">{{ t('privacy.sections.thirdParty.title') }}</h3>
+          <p class="text-muted-foreground">{{ t('privacy.sections.thirdParty.content') }}</p>
+        </section>
+
+        <!-- 数据控制 -->
+        <section>
+          <h3 class="font-semibold mb-1">{{ t('privacy.sections.dataControl.title') }}</h3>
+          <p class="text-muted-foreground mb-1">{{ t('privacy.sections.dataControl.content') }}</p>
+          <ul class="list-disc list-inside text-muted-foreground ml-2 space-y-0.5">
+            <li>{{ t('privacy.sections.dataControl.items.export') }}</li>
+            <li>{{ t('privacy.sections.dataControl.items.import') }}</li>
+            <li>{{ t('privacy.sections.dataControl.items.delete') }}</li>
+          </ul>
+        </section>
+
+        <!-- 联系我们 -->
+        <section>
+          <h3 class="font-semibold mb-1">{{ t('privacy.sections.contact.title') }}</h3>
+          <p class="text-muted-foreground">
+            {{ t('privacy.sections.contact.content') }}
+            <a
+              :href="`https://github.com/${pkg.author.name}/${pkg.name}/issues`"
+              target="_blank"
+              rel="noopener noreferrer"
+              class="text-primary hover:underline"
+            >
+              GitHub Issues
+            </a>
+          </p>
+        </section>
+      </div>
+      <DialogFooter class="mt-4">
+        <Button variant="outline" @click="open = false">
+          {{ t('common.close') }}
+        </Button>
+      </DialogFooter>
+    </DialogContent>
+  </Dialog>
+</template>
+
+<script setup lang="ts">
+  import { useI18n } from '@/composables/useI18n'
+  import { Dialog, DialogContent, DialogDescription, DialogHeader, DialogTitle, DialogFooter } from '@/components/ui/dialog'
+  import { Button } from '@/components/ui/button'
+  import pkg from '../../package.json'
+
+  // 双向绑定 open 状态
+  const open = defineModel<boolean>('open', { default: false })
+
+  const { t } = useI18n()
+</script>