diff --git a/patch_v2/files_app/files b/patch_v2/files_app/files
index 9b0efa3..1fad387 100755
Binary files a/patch_v2/files_app/files and b/patch_v2/files_app/files differ
diff --git a/patch_v2/hello_app/hello b/patch_v2/hello_app/hello
index 5035c56..681ce29 100755
Binary files a/patch_v2/hello_app/hello and b/patch_v2/hello_app/hello differ
diff --git a/patch_v2/meow_launcherd/app_launcher.c b/patch_v2/meow_launcherd/app_launcher.c
index b991c46..2b26e06 100644
--- a/patch_v2/meow_launcherd/app_launcher.c
+++ b/patch_v2/meow_launcherd/app_launcher.c
@@ -1201,6 +1201,9 @@ static void notify_app_crash(const char *pkg, int status)
  *   ① SIGSTOP App → ② 写 /tmp/meow_notif_active（+ /tmp/meow_power_menu_active 让 watchdog 让位）
  *      → ③ pm_capture_app_frame 读回 App 帧当背景 → ④ run_notif_center(apps={a},1) 叠加渲染
  *      + 接管输入 → ⑤ 关闭后恢复 App 帧 → unlink active → SIGCONT App。
+ * 媒体保活分支（定案）：当前媒体源==本 App 且 PLAYING（meow_media_app_playing）→ ①不 SIGSTOP、
+ *   ⑤不 SIGCONT；App 继续跑保 PCM 供流，上屏由 SDK present 层见 ②的标记自抑，输入由 SDK
+ *   输入线程见标记排空（防面板点击被 App 双重消费）。非播放中 App 维持 SIGSTOP 模板。
  * 差异：背景=App 帧（非应用列表）；关闭后回 App（非回 run_menu）；点通知首期 = dismiss + 关面板
  * + SIGCONT 回当前 App（不跨 app 启动，见 NOTIF_CENTER_APP_OVERLAY_PLAN §3.2）。
  * App 崩溃探测：run_notif_center 循环内 read /proc/<pid>/stat 状态位（zombie）周期探测
@@ -1210,14 +1213,25 @@ static void notify_app_crash(const char *pkg, int status)
 static int run_app_notif_overlay(struct app *a, pid_t pid)
 {
     if (!back_buf_ok || !fb) { logmsg("notif-overlay: no back_buf (direct mode) skip"); return 0; }
-    logmsg("notif-overlay: open (app=%s pid=%d) SIGSTOP", a->name, pid);
-    if (kill(pid, SIGSTOP) < 0) {
-        logmsg("notif-overlay: SIGSTOP %d fail: %s", pid, strerror(errno));
+    /* 媒体保活（定案）：当前媒体源==本前台 App 且 state==PLAYING → 不 SIGSTOP。ncm 等播放类
+     * App 的播放线程同进程，冻结即 PCM 断供（真机报告：播放中滑下通知中心音乐停）。改为：
+     * App 继续跑（音频照常喂 audiod、媒体上报照常），SDK present 层见 /tmp/meow_notif_active
+     * 自抑上屏（只画进 back_buf 不 present，防重绘穿透叠加层）；关闭时不补 SIGCONT（没 STOP 过）。
+     * 非播放中 App 维持现状 SIGSTOP。 */
+    int keep_running = meow_media_app_playing(a->id);
+    if (keep_running) {
+        logmsg("notif-overlay: open (app=%s pid=%d) PLAYING -> no SIGSTOP (SDK present suppressed)",
+               a->name, pid);
     } else {
-        /* 等 App 进入 stopped 态（/proc/pid/stat 状态位 'T'；超时兜底）；frozen 后才能读回帧 */
-        for (int i = 0; i < 100; i++) {
-            if (proc_is_stopped(pid)) break;
-            usleep(10000);
+        logmsg("notif-overlay: open (app=%s pid=%d) SIGSTOP", a->name, pid);
+        if (kill(pid, SIGSTOP) < 0) {
+            logmsg("notif-overlay: SIGSTOP %d fail: %s", pid, strerror(errno));
+        } else {
+            /* 等 App 进入 stopped 态（/proc/pid/stat 状态位 'T'；超时兜底）；frozen 后才能读回帧 */
+            for (int i = 0; i < 100; i++) {
+                if (proc_is_stopped(pid)) break;
+                usleep(10000);
+            }
         }
     }
     /* 让位标记：/tmp/meow_notif_active（§10.5 语义同 powmenu_active）。当前 watchdog 只认
@@ -1240,19 +1254,27 @@ static int run_app_notif_overlay(struct app *a, pid_t pid)
     g_notif_ctrl_pid = 0;
     int died = g_notif_ctrl_died;
 
-    unlink(NOTIF_ACTIVE);
-    unlink(POWMENU_ACTIVE);
     if (died) {
         /* App 已死：不 SIGCONT、不恢复死帧；back_buf 交还 run_menu 统一重绘 */
+        unlink(NOTIF_ACTIVE);
+        unlink(POWMENU_ACTIVE);
         logmsg("notif-overlay: app died during session -> unified exit path");
         return 1;
     }
     /* 恢复 App 帧（run_notif_center 关面板后 back_buf 已还原为背景=App 帧；再拍一次兜底
-     * 覆盖非动画关闭路径）+ SIGCONT。 */
+     * 覆盖非动画关闭路径）。媒体保活路径（keep_running）：先恢复帧再 unlink 标记——
+     * App 未被冻结仍在跑，标记多留一拍可让 SDK present 自抑覆盖到恢复帧上屏之后，
+     * 避免「标记先消失 → App 抢在恢复帧前 present 新帧 → 又被旧帧盖回」的一帧回闪。 */
     pm_capture_app_frame();
     meow_ui_flush();
-    kill(pid, SIGCONT);
-    logmsg("notif-overlay: closed -> SIGCONT app");
+    unlink(NOTIF_ACTIVE);
+    unlink(POWMENU_ACTIVE);
+    if (!keep_running) {
+        kill(pid, SIGCONT);
+        logmsg("notif-overlay: closed -> SIGCONT app");
+    } else {
+        logmsg("notif-overlay: closed -> app never stopped (media keep-alive), no SIGCONT");
+    }
     return 0;
 }
 
diff --git a/patch_v2/meow_launcherd/meow_launcherd b/patch_v2/meow_launcherd/meow_launcherd
index 9db04d5..301978d 100755
Binary files a/patch_v2/meow_launcherd/meow_launcherd and b/patch_v2/meow_launcherd/meow_launcherd differ
diff --git a/patch_v2/meow_launcherd/meow_media.c b/patch_v2/meow_launcherd/meow_media.c
index 9485aea..9a57c30 100644
--- a/patch_v2/meow_launcherd/meow_media.c
+++ b/patch_v2/meow_launcherd/meow_media.c
@@ -120,6 +120,13 @@ int meow_media_has_source(void)
     return (s && s->state != MEOW_MEDIA_STOPPED) ? 1 : 0;
 }
 
+int meow_media_app_playing(const char *app_id)
+{
+    const meow_media_session_t *s = meow_media_current();
+    if (!s || !app_id || !app_id[0]) return 0;
+    return (s->state == MEOW_MEDIA_PLAYING && strcmp(s->app_id, app_id) == 0) ? 1 : 0;
+}
+
 static int send_playctl(const meow_media_session_t *s, uint32_t cmd, int64_t seek_ms)
 {
     if (!s || !s->used || !g_ops || !g_ops->send) return -1;
diff --git a/patch_v2/meow_launcherd/meow_media.h b/patch_v2/meow_launcherd/meow_media.h
index 9c0133f..95ef3e2 100644
--- a/patch_v2/meow_launcherd/meow_media.h
+++ b/patch_v2/meow_launcherd/meow_media.h
@@ -72,6 +72,10 @@ const meow_media_session_t *meow_media_current(void);
 /* 是否有活动媒体源：当前源存在且 state != 0(停止)。通知中心卡片/播放页据此显示。 */
 int  meow_media_has_source(void);
 
+/* §10.5 叠加会话保活判定：当前源（最近活跃会话）存在、state==PLAYING 且 app_id 匹配。
+ * launcher 据此决定通知中心叠加不 SIGSTOP 该 App（保 PCM 供流），SDK present 层自抑上屏。 */
+int  meow_media_app_playing(const char *app_id);
+
 /* 向当前源下发 PLAYCTL（卡片按钮/播放页/媒体键/控制器）。返回 0=已发，-1=无源/发送失败。 */
 int  meow_media_playctl(uint32_t cmd, int64_t seek_ms);
 
diff --git a/patch_v2/meow_launcherd/test_media.c b/patch_v2/meow_launcherd/test_media.c
index 243c8eb..f58b5e5 100644
--- a/patch_v2/meow_launcherd/test_media.c
+++ b/patch_v2/meow_launcherd/test_media.c
@@ -7,6 +7,7 @@
  *   4) PLAYCTL 下发字节格式（socketpair 对端可读回 MSG_PLAYCTL 帧，cmd/seek 正确）；
  *   5) meow_media_playctl 无源 → -1；
  *   6) clear(app) 清会话 → current()=NULL。
+ *   8) meow_media_app_playing（§10.5 叠加保活分支：当前源+PLAYING+app_id 匹配才 1）。
  * 只依赖 meow_media.c + meow_ipc.h（纯 C），宿主 gcc 直编。
  */
 #include <stdio.h>
@@ -170,6 +171,26 @@ int main(void)
     fill_meta(&m, "", MEOW_MEDIA_PLAYING, 0, 0, "x", "y");
     CHECK(meow_media_meta(&m, sv[0]) == -1, "meta empty app_id == -1");
 
+    /* 8) §10.5 叠加保活分支判定 meow_media_app_playing（launcher 不 SIGSTOP 的入口判据） */
+    meow_media_clear(NULL);
+    CHECK(meow_media_app_playing("com.ncm") == 0, "app_playing: no source == 0");
+    fill_meta(&m, "com.ncm", MEOW_MEDIA_PLAYING, 1000, 240000, "Song A", "Artist A");
+    meow_media_meta(&m, sv[0]);
+    CHECK(meow_media_app_playing("com.ncm") == 1, "app_playing: current+PLAYING+match == 1");
+    CHECK(meow_media_app_playing("com.other") == 0, "app_playing: app_id mismatch == 0");
+    CHECK(meow_media_app_playing("") == 0, "app_playing: empty app_id == 0");
+    CHECK(meow_media_app_playing(NULL) == 0, "app_playing: NULL app_id == 0");
+    fill_meta(&m, "com.ncm", MEOW_MEDIA_PAUSED, 1000, 240000, "Song A", "Artist A");
+    meow_media_meta(&m, sv[0]);
+    CHECK(meow_media_app_playing("com.ncm") == 0, "app_playing: PAUSED == 0 (SIGSTOP as usual)");
+    fill_meta(&m, "com.ncm", MEOW_MEDIA_PLAYING, 2000, 240000, "Song A", "Artist A");
+    meow_media_meta(&m, sv[0]);
+    /* 当前源被别的 App 抢走（后者 PAUSED 也抢走「最近活跃」）→ 本 App 播放中也不再保活 */
+    fill_meta(&m, "com.player2", MEOW_MEDIA_PAUSED, 0, 180000, "Song B", "Artist B");
+    meow_media_meta(&m, sv[0]);
+    CHECK(meow_media_app_playing("com.ncm") == 0, "app_playing: not current source == 0");
+    meow_media_clear(NULL);
+
     printf("\n%s (%d fails)\n", g_fails ? "FAILED" : "ALL PASS", g_fails);
     return g_fails ? 1 : 0;
 }
diff --git a/patch_v2/meow_launcherd/test_notif_panel b/patch_v2/meow_launcherd/test_notif_panel
index 984a0f0..8069403 100755
Binary files a/patch_v2/meow_launcherd/test_notif_panel and b/patch_v2/meow_launcherd/test_notif_panel differ
diff --git a/patch_v2/meow_launcherd/test_vol_ramp_jack b/patch_v2/meow_launcherd/test_vol_ramp_jack
index 1684324..1126c55 100755
Binary files a/patch_v2/meow_launcherd/test_vol_ramp_jack and b/patch_v2/meow_launcherd/test_vol_ramp_jack differ
diff --git a/patch_v2/sdk/meow_ui_gfx.c b/patch_v2/sdk/meow_ui_gfx.c
index 45c1a07..f459632 100644
--- a/patch_v2/sdk/meow_ui_gfx.c
+++ b/patch_v2/sdk/meow_ui_gfx.c
@@ -42,6 +42,11 @@
 #define MUI_DEFAULT_W   480
 #define MUI_DEFAULT_H   720
 
+/* §10.5 叠加让位标记：与 launcher meow_launcher_internal.h NOTIF_ACTIVE 同路径。
+ * 通知中心叠加会话期存在；宿主/单测可经 MEOW_NOTIF_ACTIVE_FILE 覆写路径（进程内只解析一次）。 */
+#define MEOW_NOTIF_ACTIVE_DEFAULT "/tmp/meow_notif_active"
+#define MEOW_OVERLAY_CHK_MS  200   /* 存在性检查节流：别每帧 stat */
+
 /* 脏矩形上限（超出合并为全屏） */
 #define MUI_DIRTY_MAX   12
 
@@ -939,10 +944,42 @@ static int statusbar_touched(void)
     return 0;
 }
 
+/* ---- §10.5 叠加让位自抑（present 层）----
+ * /tmp/meow_notif_active 存在 = 通知中心叠加会话进行中（launcher 正在 fb 上渲染面板）。
+ * App 进程（非系统 UI 渲染者）此时不上屏；200ms 节流缓存存在性（别每帧 stat）。
+ * 计数 g_overlay_suppressed 供宿主单测断言（meow_gfx_overlay_suppressed_count）。 */
+static unsigned long long g_overlay_suppressed = 0;
+
+static int overlay_present_suppressed(void)
+{
+    if (meow_ui_sys_render_enabled()) return 0;   /* launcher（系统 UI）渲染面板，照常上屏 */
+    static char s_path[108];
+    static int  s_path_init = 0;
+    static unsigned long long s_last_chk = 0;
+    static int  s_last_res = 0;
+    if (!s_path_init) {
+        const char *e = getenv("MEOW_NOTIF_ACTIVE_FILE");
+        snprintf(s_path, sizeof s_path, "%s", (e && e[0]) ? e : MEOW_NOTIF_ACTIVE_DEFAULT);
+        s_path_init = 1;
+    }
+    unsigned long long now = now_ms();
+    if (s_last_chk && now - s_last_chk < MEOW_OVERLAY_CHK_MS) return s_last_res;
+    s_last_chk = now;
+    s_last_res = (access(s_path, F_OK) == 0) ? 1 : 0;
+    return s_last_res;
+}
+
+unsigned long long meow_gfx_overlay_suppressed_count(void) { return g_overlay_suppressed; }
+
 static void present(void)
 {
     if (!g_init_ok || !g_back_buf) return;
     if (!(g_dirty_full || g_ndirty > 0)) return;
+    /* §10.5 叠加让位自抑（仅 App 进程）：App 前台播放中唤起通知中心时 launcher 不 SIGSTOP
+     * （保 PCM 供流，ncm 播放线程同进程），改由 App 进程在此自抑上屏——绘制照常进 back_buf，
+     * 只是不 present 到 fb，防 App 重绘穿透 launcher 叠加层。系统 UI 进程（launcher 渲染面板）
+     * 不抑制。抑制期脏区保留累积（超上限自然升级整帧），标记消失后下一次 present 一次上屏。 */
+    if (overlay_present_suppressed()) { g_overlay_suppressed++; return; }
     /* 帧率门控（A-1/A-2，从 launcher 迁入）：present 距上次 ≥ period(1000/eff_rate) 才呈现；
      * 未满周期则保留脏区（不 dirty_reset），下一轮再试。refresh_always_max=1 时跳过门控（恒满速）。 */
     unsigned long long now = now_ms();
diff --git a/patch_v2/sdk/meow_ui_input.c b/patch_v2/sdk/meow_ui_input.c
index 11dac2d..e105f5a 100644
--- a/patch_v2/sdk/meow_ui_input.c
+++ b/patch_v2/sdk/meow_ui_input.c
@@ -136,6 +136,30 @@ static int meow_input_jack_debounce(void)
     return g_jack_changed_at && (now - g_jack_changed_at) < 800;
 }
 
+/* ---- §10.5 叠加让位：通知中心叠加会话期输入排空（播放中 App 不被 SIGSTOP 的配套）----
+ * 媒体播放中的 App 前台唤起通知中心时 launcher 不冻结 App（保 PCM 供流，ncm 播放线程同进程），
+ * App 输入线程仍在读同一批 evdev 设备（每 fd 各收一份事件副本，与 launcher 互不剥夺）——若不
+ * 抑制，面板上的一次点击会被 App 再消费一次（如面板媒体卡片「暂停」与 App 同坐标控件双重触发）。
+ * 故标记存在期：排空本进程 fd 队列并丢弃、EVIOCGKEY 位图静默对齐（不产生边沿语义，系统键动作
+ * 叠加期由 launcher/watchdog 单侧承担）。200ms 节流缓存存在性（与 present 层同口径，别每圈 stat）。 */
+static int overlay_input_suppressed(void)
+{
+    static char s_path[108];
+    static int  s_path_init = 0;
+    static unsigned long long s_last_chk = 0;
+    static int  s_last_res = 0;
+    if (!s_path_init) {
+        const char *e = getenv("MEOW_NOTIF_ACTIVE_FILE");   /* 宿主/单测覆写（进程内只解析一次） */
+        snprintf(s_path, sizeof s_path, "%s", (e && e[0]) ? e : "/tmp/meow_notif_active");
+        s_path_init = 1;
+    }
+    unsigned long long now = now_ms();
+    if (s_last_chk && now - s_last_chk < 200) return s_last_res;
+    s_last_chk = now;
+    s_last_res = (access(s_path, F_OK) == 0) ? 1 : 0;
+    return s_last_res;
+}
+
 /* ---- 系统按键语义（M2.55：SDK 输入层消化，App 前台也生效）----
  * 物理键是系统资源（APPS.md §3.4.1），语义全局统一。本函数在输入线程执行系统动作：
  *   电源 116        → 息屏/亮屏/长按菜单（内核/sys_server/watchdog），SDK 不动（维持现状）；
@@ -451,9 +475,34 @@ static void *input_thread(void *arg)
         }
     }
 
+    int overlay_was = 0;   /* §10.5：上一圈是否处于叠加抑制（进入沿复位触摸状态机用） */
     while (g_thread_run) {
         if (nfd == 0) { usleep(20000); continue; }
         int r = poll(fds, nfd, 20);
+        /* §10.5 叠加让位：通知中心叠加会话期（标记存在）排空并丢弃本进程事件副本——面板输入
+         * 由 launcher 接管，App 不得再消费（防面板点击被 App 双重触发）；EVIOCGKEY 位图静默
+         * 对齐（不产生边沿语义/系统键动作，解除后不会把面板期按键误判为新边沿）。 */
+        if (overlay_input_suppressed()) {
+            if (!overlay_was) {   /* 进入沿：复位触摸状态机，防抑制期丢失抬手致 t_down 卡死 */
+                overlay_was = 1;
+                t_down = 0; t_press_valid = 0; t_origin_valid = 0;
+                t_cx = t_cy = -1; t_dx = t_dy = 0; t_down_ms = 0; t_mv_x = t_mv_y = -1;
+                t_long_fired = 0;
+            }
+            if (r > 0)
+                for (int i = 0; i < nfd; i++) {
+                    if (!(fds[i].revents & POLLIN)) continue;
+                    unsigned char junk[64];
+                    while (read(fds[i].fd, junk, sizeof junk) > 0) { /* 整批丢弃 */ }
+                }
+            for (int i = 0; i < nfd; i++) {
+                unsigned char cur[KEY_MAX / 8 + 1];
+                if (ioctl(fds[i].fd, EVIOCGKEY(sizeof cur), cur) == 0)
+                    memcpy(prev_key[i], cur, sizeof cur);
+            }
+            continue;
+        }
+        overlay_was = 0;
         if (r < 0) {
             if (errno != EINTR) usleep(20000);
         } else if (r > 0) {
diff --git a/patch_v2/sdk/meow_ui_internal.h b/patch_v2/sdk/meow_ui_internal.h
index 013c73c..c1f895a 100644
--- a/patch_v2/sdk/meow_ui_internal.h
+++ b/patch_v2/sdk/meow_ui_internal.h
@@ -148,6 +148,10 @@ void meow_gfx_ring_arc(int cx, int cy, int r, int th, int start_deg,
 /* 是否运行于真实 fb 之上（0 = 头less/离屏，qemu/宿主）。 */
 int  meow_gfx_is_device(void);
 
+/* §10.5 叠加让位：present 因 /tmp/meow_notif_active 存在而被自抑的累计次数
+ * （仅 App 进程会自抑；宿主单测断言用，设备上无调用方）。 */
+unsigned long long meow_gfx_overlay_suppressed_count(void);
+
 /* 中文/日文字库（mfont）是否已加载（状态栏「蓝牙」CJK 与回退 "BT" 二选一）。 */
 int  meow_gfx_mfont_ready(void);
 
diff --git a/patch_v2/sdk/test_ime_fix b/patch_v2/sdk/test_ime_fix
index 0e17466..6d6f73b 100755
Binary files a/patch_v2/sdk/test_ime_fix and b/patch_v2/sdk/test_ime_fix differ
diff --git a/patch_v2/sdk/test_meow_ui_widgets b/patch_v2/sdk/test_meow_ui_widgets
index d793a4f..ba5e99a 100755
Binary files a/patch_v2/sdk/test_meow_ui_widgets and b/patch_v2/sdk/test_meow_ui_widgets differ
diff --git a/patch_v2/sdk/test_notif_gesture b/patch_v2/sdk/test_notif_gesture
index fdbfced..d8de637 100755
Binary files a/patch_v2/sdk/test_notif_gesture and b/patch_v2/sdk/test_notif_gesture differ
diff --git a/patch_v2/sdk/test_notif_open b/patch_v2/sdk/test_notif_open
index 46ec474..76292e8 100755
Binary files a/patch_v2/sdk/test_notif_open and b/patch_v2/sdk/test_notif_open differ
diff --git a/patch_v2/sdk/test_overlay_suppress.c b/patch_v2/sdk/test_overlay_suppress.c
new file mode 100644
index 0000000..4fa5893
--- /dev/null
+++ b/patch_v2/sdk/test_overlay_suppress.c
@@ -0,0 +1,97 @@
+/* test_overlay_suppress.c — §10.5 叠加让位 present 自抑宿主验证（离屏 480x720，16bpp）。
+ *
+ * 背景：媒体播放中的 App 前台唤起通知中心时 launcher 不 SIGSTOP（保 PCM 供流），改由 SDK
+ * present 层见 /tmp/meow_notif_active（宿主用 MEOW_NOTIF_ACTIVE_FILE 覆写）自抑上屏。
+ *
+ * 覆盖：
+ *   T1  无标记：flush 正常上屏（frames_presented 递增，抑制计数 0）；
+ *   T2  有标记：flush 被抑制（只画进 back_buf 不 present：frames 不变、抑制计数递增）；
+ *   T2b 抑制期第二次 flush 仍被抑制（200ms 节流缓存内行为一致）；
+ *   T3  标记消失：下一次 flush 恢复上屏（抑制期累积脏区一次上屏，无需重画）；
+ *   T4  系统 UI 进程（launcher，system_mode=1）即使有标记也不抑制（面板必须照常上屏）。
+ *
+ * 编译（宿主 gcc，链真实 gfx/sys/theme/vol/log/widget/input/activity/dialog/ime + 打桩 font/global）：
+ *   gcc -Wall -Wextra -o test_overlay_suppress test_overlay_suppress.c test_host_stub.c \
+ *       meow_ui_gfx.c meow_ui_sys.c meow_ui_theme.c meow_ui_vol.c meow_ui_log.c \
+ *       meow_ui_widget.c meow_ui_input.c meow_ui_activity.c meow_ui_dialog.c meow_ui_ime.c \
+ *       meow_ui_draw.c meow_ui_view.c meow_notify_ipc.c \
+ *       -I. -I../meow_launcherd -DMEOW_UI_HOST_TEST -pthread
+ */
+#include "meow_ui.h"
+#include "meow_ui_internal.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#define MARKER "/tmp/test_notif_active_sdk"
+
+static void marker_write(void)
+{
+    int fd = open(MARKER, O_WRONLY | O_CREAT | O_TRUNC, 0644);
+    assert(fd >= 0);
+    if (write(fd, "1", 1) < 0) assert(0);
+    close(fd);
+}
+
+int main(void)
+{
+    setenv("MEOW_UI_DUMP", "/tmp/overlay_suppress.ppm", 1);
+    setenv("MEOW_NOTIF_ACTIVE_FILE", MARKER, 1);
+    unlink(MARKER);
+    meow_ui_opts o = { 480, 720 };
+    assert(meow_ui_init(&o) == 0);
+    meow_ui_set_refresh_always_max(1);   /* 绕过帧率门控：每次 flush 都直达 present 判定 */
+
+    /* T1：无标记正常上屏（默认 App 进程模式：render_enabled==0） */
+    assert(meow_ui_sys_render_enabled() == 0);
+    meow_ui_clear(0x112233);
+    meow_ui_flush();
+    assert(meow_ui_frames_presented() == 1);
+    assert(meow_gfx_overlay_suppressed_count() == 0);
+    printf("T1 PASS: no marker -> presented=1 suppressed=0\n");
+
+    /* T2：有标记 → 抑制（等 >200ms 越过存在性节流缓存） */
+    marker_write();
+    usleep(250000);
+    unsigned long long f0 = meow_ui_frames_presented();
+    meow_ui_clear(0x223344);
+    meow_ui_flush();
+    assert(meow_ui_frames_presented() == f0);
+    assert(meow_gfx_overlay_suppressed_count() == 1);
+    printf("T2 PASS: marker present -> suppressed (frames frozen at %llu)\n", f0);
+
+    /* T2b：抑制期再次 flush 仍抑制（节流缓存内一致） */
+    meow_ui_clear(0x334455);
+    meow_ui_flush();
+    assert(meow_ui_frames_presented() == f0);
+    assert(meow_gfx_overlay_suppressed_count() == 2);
+    printf("T2b PASS: still suppressed within throttle window\n");
+
+    /* T3：标记消失 → 恢复上屏（抑制期累积的整帧脏一次上屏，无需重画） */
+    unlink(MARKER);
+    usleep(250000);
+    meow_ui_flush();
+    assert(meow_ui_frames_presented() == f0 + 1);
+    assert(meow_gfx_overlay_suppressed_count() == 2);
+    printf("T3 PASS: marker gone -> present resumed (accumulated dirty flushed)\n");
+
+    /* T4：系统 UI 进程（launcher）不抑制——通知中心面板本身必须照常上屏 */
+    meow_ui_sys_set_system_mode(1);
+    assert(meow_ui_sys_render_enabled() == 1);
+    marker_write();
+    usleep(250000);
+    unsigned long long f1 = meow_ui_frames_presented();
+    meow_ui_clear(0x445566);
+    meow_ui_flush();
+    assert(meow_ui_frames_presented() == f1 + 1);
+    assert(meow_gfx_overlay_suppressed_count() == 2);   /* 不再增长 */
+    unlink(MARKER);
+    printf("T4 PASS: system-UI process (launcher) never suppressed\n");
+
+    meow_ui_shutdown();
+    printf("ALL PASS\n");
+    return 0;
+}
diff --git a/patch_v2/sdk/test_sb_collapse b/patch_v2/sdk/test_sb_collapse
index 02fe5c9..385d32b 100755
Binary files a/patch_v2/sdk/test_sb_collapse and b/patch_v2/sdk/test_sb_collapse differ
diff --git a/scripts/build/fw_content.conf b/scripts/build/fw_content.conf
index f1cdcaa..9e606fb 100644
--- a/scripts/build/fw_content.conf
+++ b/scripts/build/fw_content.conf
@@ -28,7 +28,7 @@
 
 # ---- 用户态/服务守护二进制（usr/bin，全部 chmod 755 静态 MIPS）----
 patch_v2/bootmenu/meow_bootmenu|/usr/bin/meow_bootmenu|4441822d87e76bfce2ce584604ac3830|引导选单 M2.85（sysui让位 agent-216）
-patch_v2/meow_launcherd/meow_launcherd|/usr/bin/meow_launcherd|eba4f2b25f01fe756fbf36a9c0844823|主屏 launcher M2.95+（App 前台状态栏 settings.conf mtime 1s 节流重读，修 App 内音量%不刷新；PLAYCTL cmd=6 toggle 透传注释）
+patch_v2/meow_launcherd/meow_launcherd|/usr/bin/meow_launcherd|fbb82036566b8808e2449d899ecaf3b0|主屏 launcher M2.95+（§10.5 叠加媒体保活：前台 App 播放中开通知中心不 SIGSTOP，SDK present/输入见 /tmp/meow_notif_active 自抑）
 patch_v2/meow_watchdog/meow_watchdog|/usr/bin/meow_watchdog|96e80c855e8ca7fd772a2826adbd2639|应用看门狗 M2.95（+音量反转修复）
 patch_v2/meow_svcd/meow_svcd|/usr/bin/meow_svcd|605646c4cc93f2baf29071ea6bc870ea|服务管理器 M2.77（+崩溃上报 meow_crash agent-187）
 mips-repo/bins/meow_mdns/bin/meow_mdns|/usr/bin/meow_mdns|d6b0151bda26768f19952dae1342610d|mDNS 应答器 M2.78（启动竞态+换IP重检 agent-194）