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/ui/pagination/FixedPagination.vue

@@ -0,0 +1,93 @@
+<template>
+  <div v-if="totalPages > 1" class="fixed bottom-4 left-1/2 -translate-x-1/2 z-40">
+    <div class="flex items-center gap-2">
+      <!-- 上一页按钮 - 圆形胶囊 -->
+      <button
+        v-if="currentPage > 1"
+        @click="emit('update:page', currentPage - 1)"
+        class="h-10 w-10 rounded-full bg-background/95 backdrop-blur supports-[backdrop-filter]:bg-background/60 border shadow-lg flex items-center justify-center hover:bg-accent transition-colors"
+      >
+        <ChevronLeft class="h-5 w-5" />
+      </button>
+
+      <!-- 页码 - 椭圆形胶囊 -->
+      <div class="bg-background/95 backdrop-blur supports-[backdrop-filter]:bg-background/60 border rounded-full py-2 px-3 shadow-lg flex items-center gap-1">
+        <button
+          v-for="pageNum in pageNumbers"
+          :key="pageNum"
+          @click="emit('update:page', pageNum)"
+          class="h-8 min-w-8 px-2 rounded-full text-sm font-medium transition-colors"
+          :class="
+            pageNum === currentPage
+              ? 'bg-primary text-primary-foreground'
+              : 'hover:bg-accent'
+          "
+        >
+          {{ pageNum }}
+        </button>
+      </div>
+
+      <!-- 下一页按钮 - 圆形胶囊 -->
+      <button
+        v-if="currentPage < totalPages"
+        @click="emit('update:page', currentPage + 1)"
+        class="h-10 w-10 rounded-full bg-background/95 backdrop-blur supports-[backdrop-filter]:bg-background/60 border shadow-lg flex items-center justify-center hover:bg-accent transition-colors"
+      >
+        <ChevronRight class="h-5 w-5" />
+      </button>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { computed } from 'vue'
+import { ChevronLeft, ChevronRight } from 'lucide-vue-next'
+
+interface Props {
+  page: number
+  totalPages: number
+  maxVisible?: number
+}
+
+const props = withDefaults(defineProps<Props>(), {
+  maxVisible: 3
+})
+
+const emit = defineEmits<{
+  'update:page': [page: number]
+}>()
+
+const currentPage = computed(() => props.page)
+
+// 生成页码列表 - 最多显示指定数量页码，不含省略号
+const pageNumbers = computed(() => {
+  const pages: number[] = []
+  const { totalPages, maxVisible } = props
+  const current = currentPage.value
+
+  if (totalPages <= maxVisible) {
+    for (let i = 1; i <= totalPages; i++) {
+      pages.push(i)
+    }
+  } else {
+    let start = current - Math.floor(maxVisible / 2)
+    let end = current + Math.floor(maxVisible / 2)
+
+    // 边界调整
+    if (start < 1) {
+      start = 1
+      end = maxVisible
+    }
+    if (end > totalPages) {
+      end = totalPages
+      start = totalPages - maxVisible + 1
+    }
+
+    for (let i = start; i <= end; i++) {
+      pages.push(i)
+    }
+  }
+
+  return pages
+})
+</script>