feat: M6.10–M6.19 批量收编 + M6.19 推卡验收

- M7 launcher 重写 5 期（虚拟化宫格/meow_theme 单一权威/横幅动画/自定义 PIN 键盘）
- OOM 通用化（cachegov 上收 SDK）、自动切歌根治、meowpanel jv_free 泄漏修复、Hello 滚动卡顿修复
- ncm 歌词 UI / 媒体通知封面 / 封面分辨率 640
- 5 bug 修复：ncm 后台化 UI 叠层+点击穿透、再进 ncm 桌面叠层、播放页新旧 UI 叠层抢刷脏区（meow_ui_gfx 恢复边沿整帧重画）、PIN 亮屏亮度跳（keys.c meow_panel_on 按 settings_brightness_clamped 恢复）、通知中心封面显歌单封面（cover.c save_cover_raw 加 is_song + 命中块守卫）
- 四 App 统一重链新 meow_ui.a 51caee4a；M6.19=0.8.19 固件 2d2331f2 推卡自刷验收全绿

patch_v2/meow_launcherd/test_power_menu_widgets.c

@@ -46,9 +46,11 @@ static int g_fail = 0;
 /* pm_cx[] = util.c 同源；pm_cy[] = power_menu.c 同源 */
 static const int pm_cx[PM_NUM] = { 175, 305, 175, 305, 175, 305 };
 static const int pm_cy[PM_NUM] = { 250, 250, 390, 390, 530, 530 };
-/* SDK 图标：2 回HiBy=ARROW_BACK、5 取消=CLOSE；其余 -1=自定义画布（pm_icons 专有） */
+/* M7.0b 曾将 2 回HiBy / 5 取消 走 SDK sb_icons（meow_iconbtn），实测 meow_iconbtn 把 32×32 位图
+ * 按 0.6*size 放大到 ~60px 致锯齿；定案回退 pm_icons 专有 56×56 1:1（恢复 M6.8 尺寸）。
+ * 镜像：全部 -1 = 自定义画布（pm_icons 专有）。 */
 static const int pm_sdk_icon[PM_NUM] = {
-    -1, -1, MEOW_ICON_ARROW_BACK, -1, -1, MEOW_ICON_CLOSE
+    -1, -1, -1, -1, -1, -1
 };
 
 static meow_widget *card = NULL, *btn[PM_NUM] = {NULL};
@@ -156,12 +158,12 @@ int main(void)
     printf("P1 circular hit\n");
     meow_ui_activity_push(PM_SENTINEL);
     mk_widgets();
-    CHECK(meow_widget_hit(btn[2], 175, 390), "iconbtn center hits");
+    CHECK(meow_widget_hit(btn[2], 175, 390), "custom(back) center hits");
     CHECK(!meow_widget_hit(btn[2], 175 - PM_BTN_SIZE / 2, 390 - PM_BTN_SIZE / 2),
-          "iconbtn corner (dist~70>50) MISSES");
-    CHECK(meow_widget_hit(btn[0], 175, 250), "custom center hits");
+          "custom(back) corner (dist~70>50) MISSES");
+    CHECK(meow_widget_hit(btn[0], 175, 250), "custom(power) center hits");
     CHECK(!meow_widget_hit(btn[0], 175 - PM_BTN_SIZE / 2, 250 - PM_BTN_SIZE / 2),
-          "custom corner MISSES");
+          "custom(power) corner MISSES");
 
     /* ============ P2 owner/enabled 双闸门 ============ */
     printf("P2 owner/enabled gate\n");
@@ -188,12 +190,12 @@ int main(void)
     meow_widget_set_state(btn[0], MEOW_WS_PRESSED, 0); meow_widget_draw(btn[0]);
     unsigned short pr0b = px565(175 + 38, 250);
     CHECK(pr0 != pr0b, "custom pressed -> bg tint pixel changes");
-    /* iconbtn 选中态 */
+    /* 选中态（自定义画布：selected=primaryContainer 圆底变化） */
     draw_all(-1);
     unsigned short ic0 = px565(175 + PM_BTN_SIZE / 4, 390);
     meow_widget_set_selected(btn[2], 1); meow_widget_draw(btn[2]);
     unsigned short ic1 = px565(175 + PM_BTN_SIZE / 4, 390);
-    CHECK(ic1 != ic0, "iconbtn selected -> circle-bg pixel changes");
+    CHECK(ic1 != ic0, "custom(back) selected -> circle-bg pixel changes");
 
     /* ============ P4 主题四态（MD3/MIUIx × 明暗）：卡片+圆钮渲染 + export 九字段 ============ */
     printf("P4 theme 4-state render + meow_theme_export\n");