feat(sdk): M6.39批 — LazyGrid/LazyColumn/LazyRow MD3容器化 + SDK全局App内底部上滑回桌面(系统手势优先)

- meow_ui_widget.c: W_LIST/meow_list/LazyColumn/LazyRow默认container=1(MD3圆角卡surfaceContainer+tonal选中+卡内按压+去分隔线) + 新增meow_list_set_container; 平坦回退set_container(0)
- meow_lazygrid.c: lg_draw_cell容器化(卡内缩8,surfaceContainer圆角+tonal选中+按压)
- meow_ui_input.c: 新增meow_ui_input_is_home_swipe(镜像np_home_gesture:屏底28px热区+上移65px+竖向主导,与左缘返回/列表中滑互斥) + MEOW_EV_HOME分发→meow_ui_nav_request_exit(系统保留手势**优先于App on_swipe**,任意App内生效→MSG_NAV EXIT→批①保活回桌面; 不调request_exit避免进程退出断送保活)
- 声明: meow_ui_input.h / meow_ui_widgets.h 各追加
- 宿主测试: test_meow_ui_home_gesture 19-0 / test_meow_ui_lazygrid 32-0, 0warning

patch_v2/sdk/meow_lazygrid.c

@@ -268,35 +268,46 @@ int meow_lazygrid_hit(meow_lazygrid *g, int x, int y)
 }
 
 /* ---- 绘制（只画可见行；clip 钳到宫格视口）---- */
+/* MD3 容器（默认 renderer P0）：格=格内对称内缩 surfaceContainer 圆角卡（radius_card）+ 卡内 tonal
+ * 选中（primaryContainer）/ 按压（primary α26）；画布=整格（触控目标），卡在其内对称内缩（同
+ * meow_listview 行>卡范式：卡片外仍命中整格，视觉卡留出呼吸空隙）。完全自绘（set_item_draw）
+ * 覆盖本 renderer，App 自理容器观感。 */
+#define MEOW_LAZYGRID_CARD_MARGIN 8   /* 格内对称边距（卡内缩；与 cell gap 叠加出卡间空隙） */
 static void lg_draw_cell(meow_lazygrid *g, const meow_theme *th, int index,
                          int cell_x, int cell_y, meow_lazygrid_item *it)
 {
     int sel = (index == g->sel);
     int txtcol = sel ? th->onPrimaryContainer : th->onSurface;
     int subcol = sel ? th->onPrimaryContainer : th->onSurfaceVariant;
-    uint32_t bg = sel ? th->primaryContainer : th->surfaceContainerLow;
-    meow_gfx_fill_round(cell_x, cell_y, g->cell_w, g->cell_h, th->radius_card, bg);
+    int m = MEOW_LAZYGRID_CARD_MARGIN;
+    int cw = g->cell_w - 2 * m, chh = g->cell_h - 2 * m;   /* 卡尺寸（格内对称内缩） */
+    int cx = cell_x + m, cy = cell_y + m;                  /* 卡左上 */
+    int press = meow_input_touch_down() &&
+                meow_input_touch_x() >= cell_x && meow_input_touch_x() < cell_x + g->cell_w &&
+                meow_input_touch_y() >= cell_y && meow_input_touch_y() < cell_y + g->cell_h;
+    meow_gfx_fill_round(cx, cy, cw, chh, th->radius_card, th->surfaceContainer);
+    if (sel) meow_gfx_fill_round(cx, cy, cw, chh, th->radius_card, th->primaryContainer);
+    else if (press) meow_gfx_fill_round_alpha(cx, cy, cw, chh, th->radius_card, th->primary, 26);
 
     int pad = 8;
     int thh = meow_ui_text_height(th->font_body);
-    int chh = g->cell_h, cw = g->cell_w;
-    /* 图标（可选）：居中于格顶 ~50%。 */
+    /* 图标（可选）：居中于卡顶 ~50%（卡中心=格中心，因对称内缩）。 */
     if (it->icon) {
-        int isz = cw * 6 / 10; if (isz > chh * 5 / 10) isz = chh * 5 / 10;
+        int isz = g->cell_w * 6 / 10; if (isz > g->cell_h * 5 / 10) isz = g->cell_h * 5 / 10;
         if (isz < 16) isz = 16;
-        int icx = cell_x + cw / 2, icy = cell_y + pad + isz / 2;
+        int icx = cx + cw / 2, icy = cy + pad + isz / 2;
         meow_ui_img_scaled(icx - isz / 2, icy - isz / 2, isz, isz, (meow_img *)it->icon);
     }
-    /* 标题 + 副标题（主界面：名 + 状态）。底部对齐。 */
+    /* 标题 + 副标题（主界面：名 + 状态）。卡内底部对齐。 */
     int has_sub = (it->subtitle && it->subtitle[0]);
-    int ty = cell_y + chh - pad - thh - (has_sub ? (thh + 2) : 0);
-    if (it->title) meow_ui_text_center(cell_x + cw / 2, ty, it->title, th->font_body, txtcol);
-    if (has_sub) meow_ui_text_center(cell_x + cw / 2, ty + thh + 2, it->subtitle, th->font_body, subcol);
+    int ty = cy + chh - pad - thh - (has_sub ? (thh + 2) : 0);
+    if (it->title) meow_ui_text_center(cx + cw / 2, ty, it->title, th->font_body, txtcol);
+    if (has_sub) meow_ui_text_center(cx + cw / 2, ty + thh + 2, it->subtitle, th->font_body, subcol);
 
-    /* 选中描边（轮廓）；禁用整体变淡。 */
-    if (sel) meow_ui_draw_rect_round(cell_x, cell_y, cw, chh, th->radius_card, th->primary);
+    /* 选中描边（轮廓）；禁用卡内变淡（圆角 α，防圆角外叠出灰方块）。 */
+    if (sel) meow_ui_draw_rect_round(cx, cy, cw, chh, th->radius_card, th->primary);
     if (!it->enabled)
-        meow_ui_fill_rect_alpha(cell_x, cell_y, cw, chh, th->onSurface, 90);
+        meow_gfx_fill_round_alpha(cx, cy, cw, chh, th->radius_card, th->onSurface, 90);
 }
 
 void meow_lazygrid_draw(meow_lazygrid *g, const meow_theme *th)