fix(sdk+launcher): 图标不渲染真根因(agent-219) — meow_ui_img.c scale_buf cover 采样把乘写成除(÷缩放比→采到源图左上角透明区,全丢); 改乘+居中裁剪偏移修正; 宿主旧测试用纯色图掩盖了该bug。+ main_menu App退出/结构变化重绘时 fb_pan_buf0_force 无条件pan回buffer0(防App翻页留buffer1致菜单残帧)

meow_ui.a→3e0ee8f7 launcher→9d0efc2f hello→9609ea6e files→90f5cf07 ncm→be8be221(均已上卡); 真机截图证据 .tmp/meowbug/fix1.png+fix_b2_after.png

patch_v2/ncm_app/app/logic/appstate.c

@@ -117,35 +117,53 @@ int appstate_load_playlists(void)
     return rc;
 }
 
-int appstate_load_playlist_songs(int idx)
+int appstate_load_playlist_songs_page(int idx, int offset, int limit)
 {
     if (idx < 0 || idx >= g_st.playlist_count) return NCM_ERR_ARG;
     /* 不在此处写 g_st.active_playlist：调用方（playlist_open/UI）已在 UI 线程设定；
      * 若后台 worker 在此改写，会覆盖用户已切换到的新歌单，造成“打开 B 却显示 A”。 */
     const ncm_playlist_t *pl = &g_st.playlists[idx];
+    if (limit <= 0 || limit > NCM_SONG_BATCH) limit = NCM_SONG_BATCH;
+    if (offset < 0) offset = 0;
 
-    int idn = 0;
-    int rc = ncm_api_playlist_detail(g_st.ctx.device_id, g_st.ctx.cookie, pl->id,
-                                     NULL, 0, NULL, 0, g_st.song_ids, NCM_SONG_MAX, &idn);
-    if (rc != NCM_OK) { g_st.song_count = 0; return rc; }
+    /* 二期：改走 /api/playlist/track/all 服务端分页（REPORT §11）。
+     * 相对旧 /v6/playlist/detail 的「全量 trackIds（5191 首 ≈900KB）」本端点直接按页返回歌曲
+     * 对象（含 al.picUrl），无需 detail 瓶颈 + 二次 song_detail。 */
+    ncm_song_t tmp[NCM_SONG_BATCH];
+    int n = 0; int64_t total = 0;
+    int rc = ncm_api_playlist_track_all(g_st.ctx.device_id, g_st.ctx.cookie, pl->id,
+                                        offset, limit, tmp, NCM_SONG_BATCH, &n, &total);
+    if (rc != NCM_OK) { if (offset == 0) g_st.song_count = 0; return rc; }
 
-    memset(g_st.songs, 0, sizeof g_st.songs);
-    int outn = 0;
-    for (int off = 0; off < idn; off += NCM_SONG_BATCH) {
-        int batch = idn - off;
-        if (batch > NCM_SONG_BATCH) batch = NCM_SONG_BATCH;
-        int bn = 0;
-        rc = ncm_api_song_detail(g_st.ctx.device_id, g_st.ctx.cookie, &g_st.song_ids[off],
-                                 batch, &g_st.songs[off], NCM_SONG_MAX - off, &bn);
-        if (rc != NCM_OK) break;
-        outn += bn;
-        if (bn < batch) break;
-    }
-    g_st.song_count = outn;
+    if (offset == 0) g_st.song_count = 0;   /* 重头：清空旧歌单（含此前打开的另一歌单） */
+
+    /* 追加到 g_st.songs[offset..]，封顶 NCM_SONG_MAX（内存纪律） */
+    int cap = NCM_SONG_MAX - offset;
+    if (cap <= 0) return NCM_OK;
+    if (n > cap) n = cap;
+    memcpy(&g_st.songs[offset], tmp, sizeof(ncm_song_t) * (size_t)n);
+    int end = offset + n;
+    if (end > NCM_SONG_MAX) end = NCM_SONG_MAX;
+    g_st.song_count = end;
     appstate_apply_playlist_cover(idx);
     return NCM_OK;
 }
 
+int appstate_load_playlist_songs(int idx)
+{
+    /* 兼容入口：整批载入（内部按页循环到 NCM_SONG_MAX 或歌单尾部）。 */
+    int rc, loaded = 0;
+    do {
+        rc = appstate_load_playlist_songs_page(idx, loaded, NCM_PLAYLIST_PAGE);
+        if (rc != NCM_OK) return rc;
+        int before = loaded;
+        loaded = g_st.song_count;
+        if (loaded - before < NCM_PLAYLIST_PAGE) break;   /* 尾部：已载完 */
+        if (loaded >= NCM_SONG_MAX) break;
+    } while (1);
+    return NCM_OK;
+}
+
 void appstate_apply_playlist_cover(int idx)
 {
     if (idx < 0 || idx >= g_st.playlist_count) return;

patch_v2/ncm_app/app/logic/lyric.c

@@ -16,6 +16,22 @@ static char     s_txt[NCM_LYRIC_LINES][LRC_MAX_TEXT];
 static char     s_tl[NCM_LYRIC_LINES][LRC_MAX_TEXT];
 static int      s_n;
 
+/* 复制一行歌词正文 n 字节到 dst，把「字面反斜杠 n/r」序列（服务器用 \n 把多行文本塞进一行，
+ * 字面 \n 渲染成豆腐块/凌乱）替换为空格；顺带容忍 \r\n。有界 ≤max。 */
+static void copy_lrc_text(char *dst, const char *src, size_t n, size_t max)
+{
+    size_t oi = 0, si = 0;
+    while (si < n && oi < max - 1) {
+        if (src[si] == '\\' && si + 1 < n && (src[si + 1] == 'n' || src[si + 1] == 'r')) {
+            dst[oi++] = ' ';
+            si += 2;
+        } else {
+            dst[oi++] = src[si++];
+        }
+    }
+    dst[oi] = 0;
+}
+
 static void lrc_parse(const char *lrc, int is_trans)
 {
     if (!lrc) return;
@@ -55,14 +71,14 @@ static void lrc_parse(const char *lrc, int is_trans)
                 /* 翻译行：按 first_ms 匹配到已有原文行 */
                 for (int i = 0; i < s_n; i++) {
                     if (s_t[i] == first_ms) {
-                        memcpy(s_tl[i], p, len); s_tl[i][len] = 0;
+                        copy_lrc_text(s_tl[i], p, len, LRC_MAX_TEXT);
                         break;
                     }
                 }
             } else {
                 if (s_n < NCM_LYRIC_LINES) {
                     s_t[s_n] = first_ms;
-                    memcpy(s_txt[s_n], p, len); s_txt[s_n][len] = 0;
+                    copy_lrc_text(s_txt[s_n], p, len, LRC_MAX_TEXT);
                     s_tl[s_n][0] = 0;
                     s_n++;
                 }