fix(ncm): 歌单详情LoadFailed——track/all端点不存在(404)回退detail+分批song_detail已验证链路; 列表误触改按下锁定行+拖动抑制 (agent-227, 真机验证256首出曲) + perf(meowpanel): 屏幕帧整数定点DCT(无FPU软浮点3.96s→0.19s/帧,实测4-5fps)+前端链式轮询防堆积+实测fps显示 (agent-228)

ncm→73422166 已部署; meowpanel→f310a00e 已部署

patch_v2/ncm_app/app/ui/home.c

@@ -259,9 +259,12 @@ int home_on_tap(int x, int y)
     }
     if (g_load_err != 0 || g_st.playlist_count == 0) return 0;
     if (meow_widget_hit(g_list, x, y)) {
-        int row = meow_listview_hit(g_list, x, y);
-        if (row < 0) { home_drag_reset(); return 1; }
+        /* 误触修复（同 playlist.c）：小拖动滚动列表后 release 被 SDK 判成 TAP，旧命中用“释放点 +
+         * 新 scroll”，打到非按下行；改用按下行 g_press_row，移动超阈值（>10）视为滚动不触发。 */
+        int was_drag = (g_press_delta > 10);
+        int row = (g_press_row >= 0) ? g_press_row : meow_listview_hit(g_list, x, y);
         home_drag_reset();
+        if (row < 0 || was_drag) return 1;
         playlist_open(tab_global_idx(g_tab, row));
         return 1;
     }

patch_v2/ncm_app/app/ui/playlist.c

@@ -291,9 +291,14 @@ int playlist_on_tap(int x, int y)
     }
     if (g_load_err != 0 || g_st.song_count == 0) return 0;
     if (meow_widget_hit(g_list, x, y)) {
-        int row = meow_listview_hit(g_list, x, y);
-        if (row < 0) { pl_drag_reset(); return 1; }
+        /* 误触修复：小拖动（<SWIPE_THRESH）会先滚动列表、release 又被 SDK 判成 TAP，旧的
+         * meow_listview_hit(x,y) 用“释放点 + 更新后的 scroll”命中 → 打到“已移动到手指下”的行，
+         * 与按下点不一致（“点到非触摸坐标的行”）。按下行 g_press_row 才是用户真正按的行；
+         * 移动量超过阈值（g_press_delta>10，与按压红条清行同阈值）视为滚动收尾，不触发点行。 */
+        int was_drag = (g_press_delta > 10);
+        int row = (g_press_row >= 0) ? g_press_row : meow_listview_hit(g_list, x, y);
         pl_drag_reset();
+        if (row < 0 || was_drag) return 1;
         player_play_song(row);
         return 1;
     }