feat(sw): footer command group and more panel use the button border gradient

The command group and the more panel 1px border now use the same gradient as
the side and auxiliary buttons (--hm-sw-footer-group-border), replacing the
solid #886D35 token --hm-sw-footer-group-border-color.

packages/sw/src/theme/sw-footer.css

@@ -43,7 +43,9 @@
   --hm-sw-footer-slot-width: 68px;
   --hm-sw-footer-slot-height: 47px;
   --hm-sw-footer-group-background: linear-gradient(0deg, #2f281a 0%, #312a1b 5%, #332b1c 36%, #463c29 58%, #38301f 79%, #19160e 98%);
-  --hm-sw-footer-group-border-color: #886d35;
+  /* Not in Figma (user decision 2026-10-27): the group and ▲ panel 1px border use the button border gradient of
+     명령어 전체보기 (side-bg.svg) and the auxiliary toggles instead of the solid #886D35 (= its top stop). */
+  --hm-sw-footer-group-border: var(--hm-sw-footer-aux-border);
   --hm-sw-footer-group-radius: 4px;
   /* bg_vacant 26:10113: the darker surface after the last command (empty slots and the rest of the bar). */
   --hm-sw-footer-vacant-background: linear-gradient(0deg, #18150e 28%, #262015 41%, #332b1c 58%, #38301f 81%, #18150e 100%);
@@ -124,10 +126,10 @@
   min-width: 0;
   display: flex;
   margin-top: 1px;
-  border: 1px solid var(--hm-sw-footer-group-border-color);
+  border: 1px solid transparent;
   border-right: 0;
   border-radius: var(--hm-sw-footer-group-radius) 0 0 0;
-  background: var(--hm-sw-footer-group-background);
+  background: var(--hm-sw-footer-group-background) padding-box, var(--hm-sw-footer-group-border) border-box;
 }
 /* The vacant surface covers the slot row only (2026-10-20): it used to run under the category row, where the open
    pocket of the current tab showed it, so a pocket crossing the last command's edge (e.g. 수정 with one command) was
@@ -310,10 +312,10 @@
   flex-wrap: wrap;
   /* Rows fill from the left in data order; a short last row stays on the left (the panel itself is right aligned). */
   justify-content: flex-start;
-  border: 1px solid var(--hm-sw-footer-group-border-color);
+  border: 1px solid transparent;
   border-bottom: 0;
   border-radius: var(--hm-sw-footer-group-radius) var(--hm-sw-footer-group-radius) 0 0;
-  background: var(--hm-sw-footer-group-background);
+  background: var(--hm-sw-footer-group-background) padding-box, var(--hm-sw-footer-group-border) border-box;
 }
 
 /* Empty slot (btn_add_menu 26:9971): 68 × 46 one pixel below the slot top; hover adds the orange dashed ring. */