fix: remove sidebar identity card

src/web/App.tsx

@@ -1156,19 +1156,6 @@ function AppShell() {
           </MobileDrawer>
         ) : (
           <aside className={`sidebar ${sidebarCollapsed ? 'collapsed' : ''}`}>
-            {!sidebarCollapsed && (
-              <div className={`sidebar-context-card ${isUserPage ? '' : 'sidebar-context-card-admin'}`.trim()}>
-                <LocalAvatar
-                  className="sidebar-context-avatar"
-                  profile={userProfile}
-                  label={displayName}
-                />
-                <div className="sidebar-context-copy">
-                  <strong>{isUserPage ? displayName : t('管理控制台')}</strong>
-                  {isUserPage && <span>{t('用户工作台')}</span>}
-                </div>
-              </div>
-            )}
             <nav className="sidebar-scroll" aria-label={t(isUserPage ? '用户工作台' : '管理控制台')}>
               {currentSidebarGroups.map((group) => (
                 <div key={group.label} className="sidebar-group">

src/web/index.css

@@ -12746,8 +12746,7 @@ textarea:focus {
 }
 
 .topbar-user-avatar-inner img,
-.user-dropdown-avatar-inner img,
-.sidebar-context-avatar img {
+.user-dropdown-avatar-inner img {
   display: block;
   width: 100%;
   height: 100%;
@@ -12772,71 +12771,6 @@ textarea:focus {
     linear-gradient(180deg, color-mix(in srgb, var(--color-bg-sidebar) 76%, var(--console-panel-solid)), color-mix(in srgb, var(--color-bg-sidebar) 88%, var(--color-bg)));
 }
 
-.sidebar-context-card {
-  display: grid;
-  grid-template-columns: 34px minmax(0, 1fr);
-  gap: 10px;
-  align-items: center;
-  margin: 2px 0 12px;
-  padding: 10px;
-  border: 1px solid var(--console-line);
-  border-radius: 16px;
-  background:
-    linear-gradient(135deg, color-mix(in srgb, var(--color-primary) 8%, var(--color-bg-card)), color-mix(in srgb, var(--color-bg-card) 72%, transparent));
-  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.52);
-}
-
-.sidebar-context-card-admin {
-  grid-template-columns: 34px minmax(0, 1fr);
-}
-
-[data-theme="dark"] .sidebar-context-card {
-  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
-}
-
-.sidebar-context-avatar {
-  width: 34px;
-  height: 34px;
-  display: inline-flex;
-  align-items: center;
-  justify-content: center;
-  overflow: hidden;
-  border-radius: 12px;
-  color: #fff;
-  font-size: 13px;
-  font-weight: 820;
-  text-transform: uppercase;
-}
-
-.sidebar-context-copy {
-  min-width: 0;
-  display: grid;
-  gap: 2px;
-}
-
-.sidebar-context-copy span,
-.sidebar-context-copy strong {
-  overflow: hidden;
-  text-overflow: ellipsis;
-  white-space: nowrap;
-}
-
-.sidebar-context-copy span {
-  color: var(--color-text-muted);
-  font-size: 11px;
-  font-weight: 720;
-}
-
-.sidebar-context-copy strong {
-  color: var(--color-text-primary);
-  font-size: 13px;
-  font-weight: 820;
-}
-
-.sidebar-context-card-admin .sidebar-context-copy strong {
-  font-size: 13.5px;
-}
-
 .sidebar-scroll {
   flex: 1 1 auto;
   min-height: 0;