feat: 低音增强、音频输出设备、社交功能与设置页全面升级

- 新增低音增强功能: 支持普通/高级模式，预设扬声器/耳机两种方案，可调分频点/增益/激励器/湿声比例等参数
- 新增音频输出设备选择: 支持 WASAPI 独占模式、设备列表枚举与格式匹配
- 播放时后台保活: 使用 powerSaveBlocker 阻止系统休眠/息屏导致音频中断
- 隐私设置扩展: 新增「允许他人查看关注列表」选项
- 社交功能: 用户关注/取关、粉丝/关注列表查看、用户关系页 (UserConnections)
- 歌单喜欢: 云歌单支持点赞/取消喜欢，显示喜欢数
- 最近播放: 自动记录用户最近播放歌曲并上报
- 一起听优化: 修复心跳计时器休眠挂起导致 Illegal heartbeat 的问题，改进远端状态同步逻辑
- 设置页 UI 大幅扩展: 音质设置、低音增强可视化控制、音频输出配置
- 新增 FFmpeg 许可证文件
- 用户主页增强: 听歌排行、听歌统计、最近播放等视图优化

src/main/authStore.ts

@@ -362,14 +362,14 @@ export async function updateCurrentUserProfile(payload: Partial<UserInfo>): Prom
     return userInfo
 }
 
-export async function getLibraryPrivacy(): Promise<{ status: string; allow_public_library: boolean; allow_public_profile: boolean }> {
+export async function getLibraryPrivacy(): Promise<{ status: string; allow_public_library: boolean; allow_public_profile: boolean; allow_public_following: boolean }> {
     const state = loadAuthState()
     const userId = state.userInfo?.id
     if (!userId) throw new Error('Not logged in')
     return qzFetch(`/user/${encodeURIComponent(userId)}/privacy/library`)
 }
 
-export async function setLibraryPrivacy(payload: { allow_public_library?: boolean; allow_public_profile?: boolean }): Promise<{ status: string; allow_public_library: boolean; allow_public_profile: boolean }> {
+export async function setLibraryPrivacy(payload: { allow_public_library?: boolean; allow_public_profile?: boolean; allow_public_following?: boolean }): Promise<{ status: string; allow_public_library: boolean; allow_public_profile: boolean; allow_public_following: boolean }> {
     const state = loadAuthState()
     const userId = state.userInfo?.id
     if (!userId) throw new Error('Not logged in')
@@ -378,3 +378,43 @@ export async function setLibraryPrivacy(payload: { allow_public_library?: boolea
         body: JSON.stringify(payload),
     })
 }
+
+// === Recent Plays ===
+
+export async function getRecentSongs(userId: string): Promise<any[]> {
+    if (!userId) throw new Error('Missing user id')
+    const result = await qzFetch(`/user/${encodeURIComponent(userId)}/recent/songs`)
+    return Array.isArray(result) ? result : []
+}
+
+export async function addRecentSong(userId: string, song: any): Promise<any> {
+    if (!userId) throw new Error('Missing user id')
+    return qzFetch(`/user/${encodeURIComponent(userId)}/recent/songs`, {
+        method: 'POST',
+        body: JSON.stringify(song),
+    })
+}
+
+// === Playlist Likes ===
+
+export async function togglePlaylistLike(playlistId: string): Promise<{ status: string; liked: boolean; like_count: number }> {
+    return qzFetch(`/playlist/${encodeURIComponent(playlistId)}/like`, {
+        method: 'POST',
+    })
+}
+
+export async function getPlaylistLike(playlistId: string): Promise<{ status: string; liked: boolean; like_count: number }> {
+    return qzFetch(`/playlist/${encodeURIComponent(playlistId)}/like`)
+}
+
+// === User Follow ===
+
+export async function toggleUserFollow(targetUserId: string): Promise<{ status: string; subscribing: boolean }> {
+    return qzFetch(`/user/${encodeURIComponent(targetUserId)}/subscribes`, {
+        method: 'PATCH',
+    })
+}
+
+export async function getUserSubscriptions(targetUserId: string): Promise<{ status: string; fans: number; subs: number; fans_list?: string[]; subs_list?: string[]; can_view_subs?: boolean }> {
+    return qzFetch(`/user/${encodeURIComponent(targetUserId)}/subscribes`)
+}