fix(HEL-240): 去掉登录页底部状态栏缺口

登录页覆盖全局 body 底边距，让左栏品牌面板铺满视口高度。

Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: multica-agent <github@multica.ai>

config/architecture-inventory.json

@@ -377,7 +377,7 @@
     "/shared/tokens.css?v=20260829-hel240",
     "/shared/base.css?v=20260806-1",
     "/shared/shell.css?v=20260829-hel237",
-    "/shared/auth.css?v=20260829-hel240",
+    "/shared/auth.css?v=20260829-hel240b",
     "/shared/components/controls.css?v=20260829-hel237",
     "/shared/components/navigation.css?v=20260820-1",
     "/shared/components/cards.css?v=20260820-1",
@@ -465,7 +465,7 @@
     },
     {
       "path": "frontend/index.html",
-      "bytes": 48253,
+      "bytes": 48254,
       "lines": 664
     },
     {