feat(portal-shell): clean widget design tokens and fix lint:tokens (P1-6)

516 mechanical replacements across 25 widget files:
- spacing xs/sm/md/lg/xl to numeric 1/2/3/4/6
- text-heading-3 to text-lg font-semibold
- bg-danger to bg-destructive
- border border dedup

Fix .eslintrc.tokens.js to use typescript-eslint parser (was importing
uninstalled @typescript-eslint/parser). lint:tokens now passes.

apps/portal-shell/src/widgets/topbar/user-menu/index.tsx

@@ -1,4 +1,4 @@
-"use client";
+"use client";
 
 /**
  * user-menu（topbar / top）
@@ -30,7 +30,7 @@ export default function UserMenu(_props: PluginProps): React.ReactElement {
         aria-label="用户菜单"
         aria-expanded={open}
         onClick={() => setOpen((v) => !v)}
-        className="flex items-center gap-2 rounded-md bg-card px-sm py-xs text-foreground"
+        className="flex items-center gap-2 rounded-md bg-card px-2 py-1 text-foreground"
       >
         <span
           aria-hidden
@@ -41,12 +41,12 @@ export default function UserMenu(_props: PluginProps): React.ReactElement {
         <span className="text-sm">{displayName}</span>
       </button>
       {open ? (
-        <ul className="absolute right-0 z-50 mt-sm w-56 rounded-xl border border bg-card p-2 shadow-md">
-          <li className="border-b border py-xs">
+        <ul className="absolute right-0 z-50 mt-2 w-56 rounded-xl border bg-card p-2 shadow-md">
+          <li className="border-b border py-1">
             <p className="text-sm text-foreground">{displayName}</p>
             <p className="text-xs text-muted-foreground">{displayEmail}</p>
           </li>
-          <li className="py-xs text-sm text-muted-foreground">
+          <li className="py-1 text-sm text-muted-foreground">
             角色：{displayRole}
           </li>
         </ul>