diff --git a/patch_v2/hello_app/hello b/patch_v2/hello_app/hello
index f83ff87..d770cf4 100755
Binary files a/patch_v2/hello_app/hello and b/patch_v2/hello_app/hello differ
diff --git a/patch_v2/hello_app/hello.c b/patch_v2/hello_app/hello.c
index 5178d91..396fd7e 100644
--- a/patch_v2/hello_app/hello.c
+++ b/patch_v2/hello_app/hello.c
@@ -3,12 +3,15 @@
  * 契约（MEOW_APP_SDK.md §1/§3/§6）：应用只调 meow_ui API —— 屏幕（back_buf +
  * flush 上屏）与输入（meow_ui_run 事件循环）由框架接管；不再 open/mmap/ioctl
  * /dev/fb0、不再读 /dev/input/event*。本应用验证「清屏 + 画文本 + 画按钮 +
- * 响应触摸」这一最小工作闭环。
+ * 响应触摸」这一最小工作闭环，并集成了通知触发按钮（meow_notify_send，§9.1）
+ * 用于端到端测试通知链路（SDK → IPC → launcher 中央存储 → 10s TTL 落盘）。
  *
  * 交互：
  *   - 点按钮 → tap 计数 +1（按钮标签实时更新）；
+ *   - 通知触发行（6 个按钮）：每个点击 meow_notify_send() 发一条不同参数的通知，
+ *     覆盖 普通INFO / 媒体(单例) / HIGH紧急度 / 进度(40%) / 常驻 / 跳转Activity；
+ *   - CANCEL LAST 按钮：meow_notify_cancel(最近一次 send 的 id)；
  *   - 左缘左滑（抬手触发）→ 请求退出（回应用列表）；滑动过程顶部出现随位移增长的进度条；
- *   - 物理键 POWER 不再映射 exit（§3.4.1：物理键系统统一管理，电源键=纯息屏/亮屏）；
  *   - 空闲时 on_tick 每秒刷新一行状态（含运行秒数）。
  *
  * 宿主/qemu 离屏：设 MEOW_UI_DUMP=<ppm 路径> 时，首帧 flush 即把 back_buf 写成
@@ -26,6 +29,12 @@
 #include <time.h>
 
 static meow_widget *g_btn;
+static meow_widget *g_nbtn[6];      /* 通知触发按钮行 */
+static meow_widget *g_cancel;       /* 取消最近一条通知 */
+static meow_widget *g_fs_btn;       /* FULLSCREEN 进入按钮（主界面） */
+static int   g_fullscreen = 0;      /* 1=处于全屏视图（点任意处退出回主界面） */
+static const char *g_notif_labels[6] = { "INFO", "MEDIA", "HIGH", "PROG", "ONGO", "TGT" };
+static uint32_t g_last_notif = 0;   /* 最近一次 send 返回的 id，供 cancel */
 static int   g_taps = 0;
 static int   g_secs = 0;
 static char  g_btn_label[32] = "TAP ME";
@@ -34,23 +43,152 @@ static char  g_btn_label[32] = "TAP ME";
  * 删除自造轮子的 hellolog()（自读 MEOW_LOG_DIR + snprintf + fopen/fprintf）。 */
 static void on_sigterm(int s) { (void)s; meow_ui_request_exit(); }
 
+/* 通知触发：对应第 which 个按钮（0..5）。SDK 端 meow_notify_send() 自动注册未声明
+ * 类型（本应用用到 4 种：GENERAL / MEDIA / PROGRESS / MESSAGE，均在 4 种上限内），
+ * 超时语义见 meow_ui.h §9.1；媒体类型为单例（重发替换）。 */
+static void notif_send(int which)
+{
+    meow_notify n;
+    memset(&n, 0, sizeof n);
+    n.progress    = -1;                     /* 缺省不显示进度条 */
+    n.timeout_ms  = MEOW_NOTIFY_TIMEOUT_NEVER;
+    n.urgency     = MEOW_NOTIFY_URG_NORMAL;
+    const char *label = "?";
+
+    switch (which) {
+    case 0: /* 普通 INFO */
+        label = "INFO";
+        n.cat = MEOW_NOTIFY_CAT_GENERAL;
+        n.title = "测试-普通通知";
+        n.body = "普通 INFO 通知，timeout=5000ms";
+        n.timeout_ms = 5000;
+        break;
+    case 1: /* 媒体单例（ongoing，不自动过期） */
+        label = "MEDIA";
+        n.cat = MEOW_NOTIFY_CAT_MEDIA;
+        n.urgency = MEOW_NOTIFY_URG_LOW;
+        n.title = "测试-媒体通知";
+        n.body = "媒体单例，正在播放，timeout=-1 常驻";
+        n.timeout_ms = MEOW_NOTIFY_TIMEOUT_ONGOING;
+        break;
+    case 2: /* HIGH 紧急度 */
+        label = "HIGH";
+        n.cat = MEOW_NOTIFY_CAT_GENERAL;
+        n.urgency = MEOW_NOTIFY_URG_HIGH;
+        n.title = "测试-紧急度HIGH";
+        n.body = "高紧急度：顶部横幅+提示音";
+        n.timeout_ms = 3000;
+        break;
+    case 3: /* 进度通知 */
+        label = "PROG";
+        n.cat = MEOW_NOTIFY_CAT_PROGRESS;
+        n.title = "测试-进度通知";
+        n.body = "下载进度 40%";
+        n.timeout_ms = 8000;
+        n.progress = 40;
+        break;
+    case 4: /* 常驻（timeout=-1，不自动过期，需手动取消） */
+        label = "ONGO";
+        n.cat = MEOW_NOTIFY_CAT_GENERAL;
+        n.title = "测试-常驻通知";
+        n.body = "常驻不自动过期（timeout=-1），需手动取消";
+        n.timeout_ms = MEOW_NOTIFY_TIMEOUT_ONGOING;
+        break;
+    case 5: /* 带 target_activity（SDK 结构暂无 icon 字段，故只填跳转目标） */
+        label = "TGT";
+        n.cat = MEOW_NOTIFY_CAT_MESSAGE;
+        n.title = "测试-跳转Activity";
+        n.body = "点击跳转 target_activity=main";
+        n.timeout_ms = 6000;
+        n.target_activity = "main";
+        break;
+    default:
+        return;
+    }
+
+    uint32_t id = meow_notify_send(&n);
+    g_last_notif = id;
+    meow_log(MEOW_LOG_INFO,
+             "notify btn=%s id=%u cat=%s urg=%s tmo=%d prog=%d target=%s title=%s",
+             label, (unsigned)id, meow_notify_category_str(n.cat),
+             meow_notify_urgency_str(n.urgency), n.timeout_ms, n.progress,
+             n.target_activity ? n.target_activity : "-",
+             n.title ? n.title : "-");
+}
+
+static void notif_cancel(void)
+{
+    int r = meow_notify_cancel(g_last_notif);
+    meow_log(MEOW_LOG_INFO, "notify cancel id=%u result=%d", (unsigned)g_last_notif, r);
+    g_last_notif = 0;
+}
+
+/* 进入/退出全屏视图（MeowOS 全屏机制，§3.1）：
+ *   - fullscreen(1) + collapsed(1)：状态栏「上收出屏只留提示线」（不完全沉浸，inset=4px），
+ *     顶部提示线热区仍可下拉，左缘返回手势（app 已注册 on_swipe）仍生效——SDK 自动处理，非 app 拦截；
+ *   - fullscreen(0) + collapsed(0)：恢复整条状态栏主界面。
+ * SDK 基座默认瞬切（g_sbar_collapse_anim_ms=0）；如需过渡动画可先 meow_ui_statusbar_animate(ms)。 */
+static void set_fullscreen(int on)
+{
+    g_fullscreen = on ? 1 : 0;
+    meow_ui_set_fullscreen(g_fullscreen);
+    meow_ui_statusbar_set_collapsed(g_fullscreen);
+    meow_log(MEOW_LOG_INFO, g_fullscreen ? "fullscreen ON (collapsed)" : "fullscreen OFF (restore)");
+}
+
 static void redraw(void)
 {
     const meow_theme *th = meow_theme_get();
     int sb = meow_ui_statusbar_height();   /* A-0 全局状态栏 inset：内容下移避免被盖 */
+    if (g_fullscreen) {
+        /* 全屏页：纯色占满 + 居中提示；点任意处 / 左缘左滑（SDK on_swipe）返回 */
+        meow_ui_clear(th->accent);
+        meow_ui_text_center(240, 330, "FULLSCREEN ACTIVE", 28, 0xFFFFFF);
+        meow_ui_text_center(240, 366, "tap anywhere = back to home", 20, 0xFFFFFF);
+        meow_ui_text_center(240, 394, "(left-edge swipe also returns)", 20, 0xFFFFFF);
+        meow_ui_flush();
+        return;
+    }
     meow_ui_clear(th->bg);
     meow_ui_text_center(240, sb + 8, "MEOWOS HELLO", 28, th->fg);
     meow_ui_text_center(240, sb + 38, "SDK: meow_ui.a", 20, th->dim);
     meow_widget_draw(g_btn);
+    meow_ui_text_center(240, 372, "tap = send notification (see log)", 20, th->dim);
+    for (int i = 0; i < 6; i++) meow_widget_draw(g_nbtn[i]);
+    meow_widget_draw(g_cancel);
+    meow_widget_draw(g_fs_btn);
     char line[64];
     snprintf(line, sizeof line, "taps=%d   uptime=%ds", g_taps, g_secs);
-    meow_ui_text_center(240, 500, line, 20, th->dim);
+    meow_ui_text_center(240, 516, line, 20, th->dim);
     meow_ui_text(20, 660, "left-swipe = exit", 20, th->dim);
     meow_ui_flush();
 }
 
 static void on_tap(int x, int y)
 {
+    if (g_fullscreen) {
+        /* 全屏页：点任意处退出回主界面（左缘左滑由 SDK on_swipe 处理，见下） */
+        set_fullscreen(0);
+        redraw();
+        return;
+    }
+    for (int i = 0; i < 6; i++) {
+        if (meow_widget_hit(g_nbtn[i], x, y)) {
+            notif_send(i);
+            redraw();
+            return;
+        }
+    }
+    if (meow_widget_hit(g_cancel, x, y)) {
+        notif_cancel();
+        redraw();
+        return;
+    }
+    if (meow_widget_hit(g_fs_btn, x, y)) {
+        set_fullscreen(1);
+        redraw();
+        return;
+    }
     if (meow_widget_hit(g_btn, x, y)) {
         g_taps++;
         snprintf(g_btn_label, sizeof g_btn_label, "TAPPED x%d", g_taps);
@@ -107,11 +245,18 @@ int main(void)
     signal(SIGTERM, on_sigterm);   /* 看门狗返回键 → 干净退出 */
 
     g_btn = meow_btn_create(120, 300, 240, 64, g_btn_label);
+    for (int i = 0; i < 6; i++)
+        g_nbtn[i] = meow_btn_create(3 + i * 80, 400, 74, 56, g_notif_labels[i]);
+    g_cancel  = meow_btn_create(36, 464, 200, 42, "CANCEL LAST");
+    g_fs_btn  = meow_btn_create(244, 464, 200, 42, "FULLSCREEN");
     redraw();
 
     meow_ui_events ev = { on_key, on_tap, on_swipe, on_tick, on_swipe_progress };
     meow_ui_run(&ev);
 
+    for (int i = 0; i < 6; i++) meow_widget_free(g_nbtn[i]);
+    meow_widget_free(g_cancel);
+    meow_widget_free(g_fs_btn);
     meow_widget_free(g_btn);
     meow_ui_shutdown();
     meow_log(MEOW_LOG_INFO, "exit");
diff --git a/patch_v2/meow_launcherd/meow_launcherd b/patch_v2/meow_launcherd/meow_launcherd
index 398ad75..558053b 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_launcherd.c b/patch_v2/meow_launcherd/meow_launcherd.c
index a1470c9..dbf2df7 100644
--- a/patch_v2/meow_launcherd/meow_launcherd.c
+++ b/patch_v2/meow_launcherd/meow_launcherd.c
@@ -944,7 +944,7 @@ static int meow_font_effective_tier(int app_tier)
     if (app_tier < MEOW_FONT_TIER_COMMON) app_tier = MEOW_FONT_TIER_COMMON;
     if (app_tier > MEOW_FONT_TIER_FULL)   app_tier = MEOW_FONT_TIER_FULL;
     int lf = 0;
-    if (meow_settings_get_bool("font.load_full", &lf) == 0 && lf)
+    if (meow_settings_get_switch("font.load_full", &lf) == 0 && lf)
         if (app_tier < MEOW_FONT_TIER_GBK) app_tier = MEOW_FONT_TIER_GBK;
     return app_tier;
 }
@@ -1015,7 +1015,7 @@ static void meow_font_reload_multifont(void)
         "font.class_cjk", "font.class_cjk_sym", "font.class_num",
         "font.class_latin", "font.class_latin_sym", "font.class_other" };
     int on = 0;
-    meow_settings_get_bool("display.multi_font", &on);
+    meow_settings_get_switch("display.multi_font", &on);
     char gpng[400], gidx[400], gfam[96];
     /* 全局跟生效档（合并 font.load_full → 大字库），与 meow_font_ensure 同源，避免槽0实际装载与
      * 此处理解不一致（多字体去重以全局 png 为基准）。 */
@@ -4530,6 +4530,7 @@ typedef struct {
 #define NET_LIST_WIFI_SCAN  3   /* 附近WiFi：WiFi 扫描结果（按 BSSID 去重，只读展示） */
 #define NET_LIST_BT_NEARBY  4   /* 蓝牙附近设备（已配对 + 扫描发现；下拉，只读展示） */
 #define NET_LIST_BT_MODE    5   /* 蓝牙当前连接模式（只读信息；对应"蓝牙模式"行，s_net_get 显示） */
+#define NET_LIST_ABOUT      6   /* 系统设置「关于本机」：只读设备信息弹窗（复用 s_dd_modal） */
 #define S_NET_MAX 8             /* 网络下拉一次最多展示项（屏幕高度限制） */
 
 /* SC_PRESET 预设表（路径/枚举字符串的"预设项，自定义文件选择留后期"） */
@@ -4639,6 +4640,9 @@ static const srow_t SMENU[] = {
     { "音量上限", "audio.volume_max", SC_SLIDER, 0,100,1, NULL,NULL,0 },
     { "音量跳步", "audio.volume_step", SC_SLIDER, 1,5,1, NULL,NULL,0 },
     { "输出设备", "audio.output", SC_PRESET, 0,0,0, out_presets, out_preset_labels, OUT_PRESETS_N },
+    /* 关于（设置列表最底；「关于本机」点开 s_about_open 弹只读设备信息框） */
+    { "关于", NULL, SC_HEADER, 0,0,0, NULL,NULL,0 },
+    { "关于本机", NULL, SC_LIST, 0,0,0, NULL,NULL,0, NET_LIST_ABOUT },
 };
 #define SMENU_N ((int)(sizeof SMENU / sizeof SMENU[0]))
 
@@ -4673,7 +4677,7 @@ static int s_row_visible(int i)
 {
     const srow_t *r = &SMENU[i];
     if (r->key && !strncmp(r->key, "font.class_", 11)) {
-        int on = 0; meow_settings_get_bool("display.multi_font", &on);
+        int on = 0; meow_settings_get_switch("display.multi_font", &on);
         return on;
     }
     return 1;
@@ -5380,6 +5384,7 @@ static int s_net_get(const srow_t *r, char *buf, int len)
     case NET_LIST_WIFI_SCAN:  snprintf(buf, len, "%d 个附近WiFi", g_net_scan_n); return 0;
     case NET_LIST_BT_NEARBY:  snprintf(buf, len, "%d 台设备", g_net_bt_n); return 0;
     case NET_LIST_BT_MODE:    snprintf(buf, len, "%s", g_bt_mode); return 0;
+    case NET_LIST_ABOUT:      snprintf(buf, len, "MeowOS v%s", g_meowos_version); return 0;
     }
     snprintf(buf, len, "-");
     return 0;
@@ -5415,6 +5420,10 @@ static void s_net_sync_from_sys(void)
     s_net_refresh();
 }
 
+/* M2.5x 系统设置「关于本机」：复用 s_dd_modal 弹只读设备信息（定义见下，供 s_net_open 分发）。
+ * 前置声明：s_net_open 在其定义之前调用它。 */
+static void s_about_open(void);
+
 /* 打开 SC_LIST 网络下拉（重新解析最新列表）：已保存=可 select_network 连接；
  * 附近WiFi（扫描）/蓝牙设备（附近扫描+已配对）=只读展示（选择即关闭；带密码/配对仍留后期）。
  * 返回后刷新缓存。 */
@@ -5469,12 +5478,108 @@ static void s_net_open(const srow_t *r)
         else for (int i = 0; i < n; i++) { snprintf(back[i], sizeof back[i], "%s", items[i].name); txt[i] = back[i]; }
         s_dd_modal(r->label, txt, n, -1);     /* 只读展示 */
         break;
+    case NET_LIST_ABOUT:
+        s_about_open();            /* M2.5x 系统设置「关于本机」：只读设备信息弹窗 */
+        return;                    /* 不上网/蓝牙缓存刷新（信息已现场读取） */
     default:
         return;
     }
     s_net_refresh();
 }
 
+/* M2.5x 系统设置「关于本机」：复用 s_dd_modal（与「WiFi连接状态」弹窗同款）列只读设备信息，
+ * 点卡片外/返回即关。信息源：settings system.hostname / g_meowos_version(=/etc/meowos_version) /
+ * uname -r / /proc/cpuinfo / /proc/meminfo / df / wpa_cli status / hciconfig / fb 分辨率+状态栏高。
+ * 只展示安全信息（不含任何密钥/凭证）；实时读，短超时不阻塞主循环；行数 ≤12 适配下拉视口。
+ * 说明：launcher/bootmenu/watchdog/meow_v 未单独暴露版本号，统一以 /etc/meowos_version 的
+ * MeowOS 版本表示（与固件打包同源）；无独立固件版本文件。 */
+static void s_about_open(void)
+{
+    char info[12][96];
+    const char *item[12];
+    int n = 0;
+    char host[64];
+    char *o;
+
+    /* 设备名（settings system.hostname；缺省 meowos） */
+    if (meow_settings_get_str("system.hostname", host, sizeof host) != 0 || !host[0])
+        snprintf(host, sizeof host, "meowos");
+    snprintf(info[n++], sizeof info[0], "设备名: %s", host);
+
+    /* MeowOS / 固件版本（/etc/meowos_version；与固件打包同源） */
+    snprintf(info[n++], sizeof info[0], "MeowOS: v%s", g_meowos_version);
+
+    /* 内核版本 */
+    o = popen_read_tmo(400, "PATH=/bin:/sbin:/usr/bin:/usr/sbin uname -r 2>/dev/null");
+    if (o) { for (char *p = o; *p; p++) if (*p == '\n' || *p == '\r') { *p = 0; break; }
+             snprintf(info[n++], sizeof info[0], "内核: %s", o[0] ? o : "-"); free(o); }
+    else snprintf(info[n++], sizeof info[0], "内核: -");
+
+    /* CPU（/proc/cpuinfo：Processor/CPU model/Hardware/system type 任取首非空行） */
+    o = popen_read_tmo(500,
+        "PATH=/bin:/sbin:/usr/bin:/usr/sbin awk -F: '/(model name|cpu model|system type|machine|hardware)/{print $2; exit}' /proc/cpuinfo 2>/dev/null");
+    if (o) { char *q = o; for (char *p = o; *p; p++) if (*p == '\n' || *p == '\r') { *p = 0; break; }
+             while (*q == ' ' || *q == '\t') q++;
+             snprintf(info[n++], sizeof info[0], "CPU: %s", q[0] ? q : "-"); free(o); }
+    else snprintf(info[n++], sizeof info[0], "CPU: -");
+
+    /* 内存（/proc/meminfo MemTotal / MemAvailable，KB→MB） */
+    long mtot = 0, mavail = 0;
+    o = popen_read_tmo(500, "PATH=/bin:/sbin:/usr/bin:/usr/sbin awk '/^MemTotal:/{print $2}/^MemAvailable:/{print $2}' /proc/meminfo 2>/dev/null");
+    if (o) { if (sscanf(o, "%ld%ld", &mtot, &mavail) < 2) mavail = 0; free(o); }
+    if (mtot > 0) snprintf(info[n++], sizeof info[0], "内存: %ld/%ld MB", mavail / 1024, mtot / 1024);
+    else snprintf(info[n++], sizeof info[0], "内存: -");
+
+    /* 板载 /usr/data：df -k → 可用/总量（MB） */
+    long dfree = 0, dtot = 0;
+    o = popen_read_tmo(600, "PATH=/bin:/sbin:/usr/bin:/usr/sbin df -k /usr/data 2>/dev/null | awk 'NR==2{print $4, $2}'");
+    if (o) { if (sscanf(o, "%ld%ld", &dfree, &dtot) < 2) dtot = 0; free(o); }
+    if (dtot > 0) snprintf(info[n++], sizeof info[0], "板载: %ld/%ld MB", dfree / 1024, dtot / 1024);
+    else snprintf(info[n++], sizeof info[0], "板载: -");
+
+    /* TF 卡 /usr/data/mnt/sd_0：卡在（/proc/mounts 含该挂载点）则 df，否则「无卡」 */
+    if (card_present()) {
+        long sfree = 0, stot = 0;
+        o = popen_read_tmo(600, "PATH=/bin:/sbin:/usr/bin:/usr/sbin df -k /usr/data/mnt/sd_0 2>/dev/null | awk 'NR==2{print $4, $2}'");
+        if (o) { if (sscanf(o, "%ld%ld", &sfree, &stot) < 2) stot = 0; free(o); }
+        if (stot > 0) snprintf(info[n++], sizeof info[0], "TF卡: %ld/%ld MB", sfree / 1024, stot / 1024);
+        else snprintf(info[n++], sizeof info[0], "TF卡: -");
+    } else {
+        snprintf(info[n++], sizeof info[0], "TF卡: 无卡");
+    }
+
+    /* 当前屏幕分辨率 + 状态栏高 */
+    snprintf(info[n++], sizeof info[0], "屏幕: %dx%d 状态栏%dpx", fb_xres, fb_yres, (int)SB_BAR_H);
+
+    /* WiFi：连上则 SSID（decode）+ 本机IP + 本机MAC；未连接显示「未连接」 */
+    if (wlan_connected()) {
+        char ss[64]; net_wifi_ssid(ss, sizeof ss);
+        snprintf(info[n++], sizeof info[0], "WiFi: %s", ss[0] ? ss : "已连接");
+        o = popen_read_tmo(1200, "PATH=/bin:/sbin:/usr/bin:/usr/sbin wpa_cli -i wlan0 status 2>/dev/null");
+        char ip[32] = "", mac[24] = "";
+        if (o) {
+            char *p = o;
+            while (p && *p) {
+                char *e = strchr(p, '\n'); if (e) *e = 0;
+                if (!strncmp(p, "ip_address=", 11)) snprintf(ip, sizeof ip, "%s", p + 11);
+                else if (!strncmp(p, "address=", 8)) snprintf(mac, sizeof mac, "%s", p + 8);
+                p = e ? e + 1 : NULL;
+            }
+            free(o);
+        }
+        if (ip[0])  snprintf(info[n++], sizeof info[0], "本机IP: %s", ip);
+        if (mac[0]) snprintf(info[n++], sizeof info[0], "本机MAC: %s", mac);
+    } else {
+        snprintf(info[n++], sizeof info[0], "WiFi: 未连接");
+    }
+
+    /* 蓝牙：hci_powered 决定开/关 */
+    snprintf(info[n++], sizeof info[0], "蓝牙: %s", hci_powered() ? "开" : "关");
+
+    for (int i = 0; i < n && i < 12; i++) item[i] = info[i];
+    s_dd_modal("关于本机", item, n, -1);   /* cur=-1：只读展示，无预勾选 */
+}
+
 
 /* ---- 控件绘制（MD3 形态；全部用主题角色色，无散落硬编码）---- */
 static void s_draw_switch(int x, int y, int on, const meow_ui_theme_t *th)
@@ -5571,7 +5676,7 @@ static void s_commit(const srow_t *r, int save_now)
         if (!meow_font_ensure())
             logmsg("font.load_full: reload failed -> dotmatrix fallback");
         else {
-            int lf = 0; meow_settings_get_bool("font.load_full", &lf);
+            int lf = 0; meow_settings_get_switch("font.load_full", &lf);
             logmsg("font.load_full: reloaded (load_full=%d)", lf);
         }
         meow_font_reload_multifont();
@@ -5649,7 +5754,7 @@ static void draw_settings_page(int sel, int scroll_off)
         } else if (r->ctrl == SC_SWITCH) {
             ui_draw(SET_CARD_X + 16, sy + (SROW_H - meow_font_line_height(22)) / 2, r->label,
                     th->on_surface, 22);
-            int on = 0; meow_settings_get_bool(r->key, &on);
+            int on = 0; meow_settings_get_switch(r->key, &on);
             s_draw_switch(SET_CARD_X + SET_CARD_W - 16 - 48, sy + (SROW_H - 28) / 2, on, th);
         } else if (r->ctrl == SC_SLIDER) {
             int ly = sy + (SROW_H - meow_font_line_height(22)) / 2 - 6;   /* 标题略上移，给下方滑条留位 */
@@ -6217,8 +6322,8 @@ static void run_settings_page(void)
                                         const srow_t *r = &SMENU[idx];
                                         sel = idx; need_paint = 1; sel_changed = 1;
                                         if (r->ctrl == SC_SWITCH) {
-                                            int on = 0; meow_settings_get_bool(r->key, &on);
-                                            meow_settings_set_bool(r->key, !on);
+                                            int on = 0; meow_settings_get_switch(r->key, &on);
+                                            meow_settings_set_switch(r->key, !on);
                                             s_commit(r, 1);
                                         } else if (r->ctrl == SC_LIST) {
                                             /* M2.39 网络列表行：开下拉（重新解析）+ 重绘 + 排空本页 tfd
@@ -6987,7 +7092,7 @@ static int launch_app(struct app *a)
             char fpng[400], fidx[400], fam[96];
             int have_global;
             int mf_on = 0;
-            meow_settings_get_bool("display.multi_font", &mf_on);
+            meow_settings_get_switch("display.multi_font", &mf_on);
             snprintf(env_mf, sizeof env_mf, "MEOW_MULTI_FONT=%d", mf_on ? 1 : 0);
             envp[ne++] = env_mf;
             /* M2.5x：字库档 MEOW_FONT_TIER=<0|1|2> —— 按 app.json "fonts" 声明注入，并合并
diff --git a/patch_v2/meow_launcherd/meow_settings.c b/patch_v2/meow_launcherd/meow_settings.c
index 67bace2..20026c7 100644
--- a/patch_v2/meow_launcherd/meow_settings.c
+++ b/patch_v2/meow_launcherd/meow_settings.c
@@ -501,6 +501,40 @@ int meow_settings_set_bool(const char *key, int v)
     return MEOW_OK;
 }
 
+/* ---- 开关型（M2.5x）----
+ * 开关 = SET_BOOL，或 SET_INT 且取值域恰为 {0,1}（如 display.multi_font / font.load_full，
+ * 见 SYSTEM_SETTINGS §1「int 0/1」）。实体设置页 SC_SWITCH 与字体逻辑用通用读写，
+ * 避免对 SET_INT 开关误用 get_bool/set_bool（类型不符必失败 → 点不动/恒 OFF/6 类行恒隐藏）。 */
+static int is_switch_like(meow_setting *s)
+{
+    if (!s) return 0;
+    if (s->type == SET_BOOL) return 1;
+    if (s->type == SET_INT && s->min == 0 && s->max == 1) return 1;
+    return 0;
+}
+
+int meow_settings_get_switch(const char *key, int *out)
+{
+    meow_setting *s = find_set(key);
+    if (!s) return MEOW_ERR_NOENT;
+    if (!g_inited) return MEOW_ERR_NOTINIT;
+    if (!out) return MEOW_ERR_INVAL;
+    if (!is_switch_like(s)) return MEOW_ERR_INVAL;
+    if (s->type == SET_BOOL) *out = (s->cur[0] == '1');
+    else                      *out = (atoi(s->cur) != 0);
+    return MEOW_OK;
+}
+
+int meow_settings_set_switch(const char *key, int v)
+{
+    meow_setting *s = find_set(key);
+    if (!s) return MEOW_ERR_NOENT;
+    if (!g_inited) return MEOW_ERR_NOTINIT;
+    if (!is_switch_like(s)) return MEOW_ERR_INVAL;
+    if (s->type == SET_BOOL) return meow_settings_set_bool(key, v);
+    return meow_settings_set_int(key, v ? 1 : 0);   /* SET_INT 0/1：写 0/1（clamp 到 {0,1}） */
+}
+
 /* ---- listener ---- */
 int meow_settings_add_listener(meow_settings_listener cb)
 {
diff --git a/patch_v2/meow_launcherd/meow_settings.h b/patch_v2/meow_launcherd/meow_settings.h
index 34aac2c..d7a2e89 100644
--- a/patch_v2/meow_launcherd/meow_settings.h
+++ b/patch_v2/meow_launcherd/meow_settings.h
@@ -81,6 +81,14 @@ int  meow_settings_set_str (const char *key, const char *v);/* 长度截断 MEOW
 int  meow_settings_set_enum(const char *key, int idx);      /* 校验枚举合法，越界拒绝 */
 int  meow_settings_set_bool(const char *key, int v);
 
+/* M2.5x：开关型键的通用读写。开关 = SET_BOOL，或 SET_INT 且取值域恰为 {0,1}
+ * （如 display.multi_font / font.load_full，二者按 SYSTEM_SETTINGS §1 用 int 0/1 存储）。
+ * 实体设置页 SC_SWITCH 控件与字体逻辑统一走本对接口——若对这些 SET_INT 开关误用
+ * get_bool/set_bool，类型不符（SET_BOOL 才接受）必返回 MEOW_ERR_INVAL，导致开关
+ * 「点不动/恒 OFF/多字体 6 类行恒隐藏」。返回值语义同其它 get 系列 / set 系列。 */
+int  meow_settings_get_switch(const char *key, int *out);   /* 0/1；SET_BOOL 或 SET_INT 0/1 */
+int  meow_settings_set_switch(const char *key, int v);      /* 同上；写入 clamp 并广播 */
+
 /* ---- 变更通知（set 成功后广播 key 字符串）---- */
 int  meow_settings_add_listener(meow_settings_listener cb);
 int  meow_settings_remove_listener(meow_settings_listener cb);