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/meow_launcherd/app_launcher.c

@@ -63,6 +63,14 @@ static void ams_send(const char *payload, int len)
     close(fd);
 }
 
+/* 公开 amsd 上报通道包装（AMSD_DESIGN §6.2 二期）：util.c 转发运行时 declare / picker
+ * call/result 给 amsd 用。语义与 ams_send 一致：best-effort、单次 connect+write+close、
+ * 失败静默丢（amsd 不在不影响 launcher）。 */
+void meow_ams_send(const char *payload, int len)
+{
+    ams_send(payload, len);
+}
+
 /* launch 上报：pkg/activity/chain/pid。amsd 建表项 + 开 stdout 会话。 */
 static void ams_report_launch(const struct app *a, const char *chain, pid_t pid)
 {
@@ -223,6 +231,54 @@ int meow_ams_kill_pending(const char *pkg)
     return 1;
 }
 
+/* ---- AMSD_DESIGN §6.2 二期：picker 上下文（随 pending-start 置位，launch_app_chain 消费后清）----
+ * amsd `am picker` → MSG_AMS_START 扩载荷（picker=1）→ ipc_dispatch 经 set_ex 置位 + 武装
+ * g_ams_pick_armed；main_menu 消费 pending-start（照旧 launch_app/launch_activity）时，
+ * launch_app_chain 读到武装位 → 注入 MEOW_PICKER_ACTION/REQ_ID/CALLER 到子进程 → 解除武装。
+ * 单一写者（ipc_dispatch / launch_app_chain），且同一时刻仅一个 pending-start 在飞（v1 单前台 App），
+ * 故武装位不会错配到非 picker 启动。 */
+static char     g_ams_pick_action[24];
+static char     g_ams_pick_caller[MEOW_APP_ID_MAX];
+static uint32_t g_ams_pick_req;
+static int      g_ams_pick_armed;
+
+int meow_ams_pending_start_set_ex(const char *pkg, const char *act,
+                                  const char *pick_action, uint32_t pick_req,
+                                  const char *pick_caller)
+{
+    int rc = meow_ams_pending_start_set(pkg, act);
+    if (rc != 0) return rc;                          /* 拒绝（有前台 App / 参数非法） */
+    g_ams_pick_action[0] = 0;
+    g_ams_pick_caller[0] = 0;
+    g_ams_pick_req = 0;
+    g_ams_pick_armed = 0;
+    if (pick_action && pick_action[0]) {
+        snprintf(g_ams_pick_action, sizeof g_ams_pick_action, "%s", pick_action);
+        if (pick_caller) snprintf(g_ams_pick_caller, sizeof g_ams_pick_caller, "%s", pick_caller);
+        g_ams_pick_req = pick_req;
+        g_ams_pick_armed = 1;
+    }
+    return 0;
+}
+
+/* 子进程 exec 前注入 picker env（action/req/caller 已由 launch_app_chain 入口捕获并解除全局武装，
+ * 即使启动失败不再错配到下一次普通启动）。返回注入后的 ne。 */
+static int ams_push_picker_env(char **envp, int ne, const char *action,
+                               uint32_t req, const char *caller)
+{
+    if (!action || !action[0]) return ne;
+    /* envp 容量 48：此处 +3 仍在界内（见 launch_app_chain envp[48] 注释） */
+    static char e_act[40], e_req[40], e_caller[MEOW_APP_ID_MAX + 20];
+    snprintf(e_act, sizeof e_act, "MEOW_PICKER_ACTION=%s", action);
+    snprintf(e_req, sizeof e_req, "MEOW_PICKER_REQ_ID=%u", req);
+    snprintf(e_caller, sizeof e_caller, "MEOW_PICKER_CALLER=%s", caller ? caller : "");
+    envp[ne++] = e_act;
+    envp[ne++] = e_req;
+    envp[ne++] = e_caller;
+    logmsg("launch: picker env action=%s req=%u caller=%s", action, req, caller ? caller : "");
+    return ne;
+}
+
 
 /* ---- 阶段 D · M1：路由注册表辅助（主循环单写者，无锁）---- */
 struct meow_acct *meow_acct_find(const char *app_id)
@@ -1179,6 +1235,17 @@ static int run_app_notif_overlay(struct app *a, pid_t pid)
 static int launch_app_chain(struct app *a, const char *chain)
 {
     logmsg("launch: %s (%s) chain=\"%s\"", a->name, a->exec, chain ? chain : "");
+    /* §6.2 二期：入口即捕获 picker 上下文并解除全局武装——即便后续 exec 失败（!a->ok）返回，
+     * 武装位也已清，不会错配到下一次普通启动（单飞不泄漏）。 */
+    char pick_action[24] = "";
+    char pick_caller[MEOW_APP_ID_MAX] = "";
+    uint32_t pick_req = 0;
+    if (g_ams_pick_armed) {
+        snprintf(pick_action, sizeof pick_action, "%s", g_ams_pick_action);
+        snprintf(pick_caller, sizeof pick_caller, "%s", g_ams_pick_caller);
+        pick_req = g_ams_pick_req;
+        g_ams_pick_armed = 0;
+    }
     if (!a->ok) { logmsg("launch blocked: exec not ok"); return -1; }
     meow_nav_begin(a->id, chain);   /* M3：冷启动/裸启动都以当前链深初始化导航栈（chain 空→depth 0） */
 
@@ -1369,6 +1436,8 @@ static int launch_app_chain(struct app *a, const char *chain)
             envp[ne++] = env_chain;
             logmsg("launch: M3 env %s / %s", env_act, env_chain);
         }
+        /* AMSD_DESIGN §6.2 二期：picker handler 启动注入（捕获值来自 launch_app_chain 入口）。 */
+        ne = ams_push_picker_env(envp, ne, pick_action, pick_req, pick_caller);
         envp[ne] = NULL;
         execve(a->exec, argv, envp);
         int e = errno;