✨ feat: 重构首页Hero、导航菜单与页面布局统一

HomeHero:
- 重建每日推荐(左)+私人FM(右)双栏布局
- FM播放/暂停切换、不喜欢/下一首、背景流动动画、均衡器特效
- 修复FM数据获取(res.data.data双层结构)
- 歌单预加载改为hover懒加载避免502

导航优化:
- SearchBar顶部菜单: 首页/歌单/专辑/排行榜/MV/本地音乐
- 侧边栏隐藏MV和本地音乐(hideInSidebar)
- 修复搜索类型切换时失焦收起(@mousedown.prevent)

页面统一:
- 新建StickyTabPage通用布局组件(标题+吸顶tabs+内容slot)
- 歌单/专辑/MV/播客页面统一使用StickyTabPage重构
- CategorySelector第一项添加ml-0.5防scale裁切

播客优化:
- RadioCard简化去除订阅按钮、容忍radio为undefined
- 去除最近播放section、loadDashboard包含loadSubscribedRadios

i18n: 新碟上架→专辑(5语言)、新增fmTrash/fmNext(5语言)

src/renderer/components/common/CategorySelector.vue

@@ -12,6 +12,7 @@
           class="py-1.5 px-4 mr-3 inline-block rounded-full cursor-pointer transition-all duration-300 text-sm font-medium bg-gray-100 dark:bg-neutral-800 text-neutral-600 dark:text-neutral-400 hover:bg-gray-200 dark:hover:bg-neutral-700 hover:text-neutral-900 dark:hover:text-white"
           :class="[
             animationClass,
+            index === 0 ? 'ml-0.5' : '',
             isActive(category) ? 'bg-primary text-white shadow-lg shadow-primary/25 scale-105' : ''
           ]"
           :style="getAnimationDelay(index)"

src/renderer/components/common/StickyTabPage.vue

@@ -0,0 +1,88 @@
+<template>
+  <div class="h-full w-full bg-white transition-colors duration-500 dark:bg-black">
+    <n-scrollbar ref="scrollbarRef" class="h-full" :size="100" @scroll="handleScroll">
+      <div class="w-full pb-32">
+        <!-- Page Header (scrolls away) -->
+        <div ref="headerRef" class="page-padding pt-6 pb-2">
+          <h1 class="mb-2 text-2xl font-bold tracking-tight text-neutral-900 md:text-3xl dark:text-white">
+            {{ title }}
+          </h1>
+          <p v-if="description" class="text-neutral-500 dark:text-neutral-400">
+            {{ description }}
+          </p>
+        </div>
+
+        <!-- Tabs (sticky on scroll) -->
+        <div
+          class="sticky-tabs z-10 transition-shadow duration-200"
+          :class="isSticky ? 'sticky top-0 shadow-sm' : ''"
+        >
+          <category-selector
+            :model-value="modelValue"
+            :categories="categories"
+            :label-key="labelKey"
+            :value-key="valueKey"
+            @change="(val: any) => emit('change', val)"
+          />
+        </div>
+
+        <!-- Content slot -->
+        <div class="page-padding pt-4">
+          <slot />
+        </div>
+      </div>
+    </n-scrollbar>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref } from 'vue';
+
+import CategorySelector from '@/components/common/CategorySelector.vue';
+
+type Category = string | number | { [key: string]: any };
+
+withDefaults(
+  defineProps<{
+    title: string;
+    description?: string;
+    modelValue: any;
+    categories: Category[];
+    labelKey?: string;
+    valueKey?: string;
+  }>(),
+  {
+    labelKey: 'label',
+    valueKey: 'value'
+  }
+);
+
+const emit = defineEmits<{
+  change: [value: any];
+  scroll: [e: any];
+}>();
+
+const scrollbarRef = ref();
+const headerRef = ref<HTMLElement>();
+const isSticky = ref(false);
+
+const handleScroll = (e: any) => {
+  if (headerRef.value) {
+    const headerBottom = headerRef.value.offsetTop + headerRef.value.offsetHeight;
+    isSticky.value = e.target.scrollTop >= headerBottom;
+  }
+  emit('scroll', e);
+};
+
+const scrollTo = (options: ScrollToOptions) => {
+  scrollbarRef.value?.scrollTo(options);
+};
+
+defineExpose({ scrollbarRef, scrollTo });
+</script>
+
+<style scoped>
+.sticky-tabs {
+  background: inherit;
+}
+</style>