feat(workspace): 侧边栏 - 主页与管理后台侧栏样式统一 (#733)

* fix(admin): 侧栏收起模式 - 修复导航图标未居中

AdminTooltip 在收起模式下用 inline-flex span 包裹 NavLink，
导致 NavLink 无法撑满容器宽度，justify-content: center 不生效。
将 span 强制为 display: block; width: 100% 修复图标居中。

* feat(workspace): 侧边栏 - 主页与管理后台侧栏样式统一

主页侧边栏：
- 顶部收起/展开按钮移除，收起时顶部展示平台 logo，logo 与文字内容居中
- 收起/展开按钮移至底部：展开时位于账户信息右侧，收起时位于其下方居中
- 按钮尺寸调整为 40px（展开）/ 48px（收起），与账户、签到按钮协调
- 修复纯图标按钮悬浮时全局规则带来的 accent 光晕，悬浮表现与导航菜单一致
- 个人信息按钮悬浮样式与导航菜单统一（--user-surface-hover，支持暗色主题）

管理后台侧边栏：
- 导航链接高度、内边距、圆角、图标尺寸对齐主页侧边栏（44px 高、12px 内边距）
- 收起态导航项自适应填满内容区，修复纵向滚动条占位导致的横向滚动
- 收起/展开按钮从侧栏边缘悬浮胶囊改为底部按钮位（与主页一致）
- 顶部品牌区改为居中布局，收起时展示 logo

* style(admin): 侧栏 - 修复 CI 格式检查

admin-chrome.css 中 cubic-bezier 数值补前导零，通过 Prettier 检查。

web/src/styles/globals.css

@@ -15522,11 +15522,10 @@ html:not(.dark) .creation-home .creation-user-message-copy-wrap { box-shadow: 0
     min-height: 38px;
     flex: 1 1 auto;
     align-items: center;
-    justify-content: space-between;
+    justify-content: center;
     gap: 6px;
     border-radius: 10px;
     padding: 0 7px;
-    text-align: left;
     transition: background-color 160ms cubic-bezier(.16, 1, .3, 1);
 }
 
@@ -16193,12 +16192,13 @@ html:not(.dark) .creation-home .creation-user-message-copy-wrap { box-shadow: 0
     border-radius: 12px;
     color: #222;
     text-align: left;
-    transition: background-color .18s ease, transform .18s ease;
+    transition: transform .18s ease;
 }
 
 .app-user-workspace .app-workspace-sidebar-profile:hover,
 .app-user-workspace .app-workspace-sidebar-profile:focus-visible {
-    background: rgba(72, 72, 73, .055);
+    background: var(--user-surface-hover);
+    color: var(--user-ink);
 }
 
 .app-user-workspace .app-workspace-sidebar-profile.is-collapsed {
@@ -16301,6 +16301,52 @@ html:not(.dark) .creation-home .creation-user-message-copy-wrap { box-shadow: 0
     height: 16px;
 }
 
+.app-user-workspace .app-workspace-sidebar-collapse-toggle {
+    display: grid;
+    width: 40px;
+    height: 40px;
+    flex: 0 0 40px;
+    place-items: center;
+    border-radius: 10px;
+    color: var(--user-ink-muted);
+}
+
+.app-user-workspace .app-workspace-sidebar-collapse-toggle:hover,
+.app-user-workspace .app-workspace-sidebar-collapse-toggle:focus-visible {
+    background: var(--user-surface-hover);
+    color: var(--user-ink);
+}
+
+.app-user-workspace .app-workspace-sidebar-collapse-toggle svg {
+    width: 18px;
+    height: 18px;
+    transition: transform var(--user-motion, .18s) ease;
+}
+
+.app-user-workspace .app-workspace-sidebar-collapse-toggle:hover svg {
+    transform: translateY(-1px);
+}
+
+.app-user-workspace .app-workspace-sidebar-nav.is-collapsed .app-workspace-sidebar-collapse-toggle {
+    width: 48px;
+    height: 48px;
+    flex: 0 0 48px;
+}
+
+.dark .app-user-workspace .app-workspace-sidebar-collapse-toggle {
+    color: rgba(255, 255, 255, 0.65) !important;
+}
+
+.dark .app-user-workspace .app-workspace-sidebar-collapse-toggle:hover,
+.dark .app-user-workspace .app-workspace-sidebar-collapse-toggle:focus-visible {
+    background: rgba(255, 255, 255, 0.08) !important;
+    color: #ffffff !important;
+}
+
+.dark .app-user-workspace .app-workspace-sidebar-collapse-toggle svg {
+    color: currentColor !important;
+}
+
 .app-user-workspace .app-workspace-sidebar-profile-popover {
     width: 230px;
 }

web/src/styles/workspace-product.css

@@ -551,9 +551,10 @@
 .app-user-workspace .app-workspace-sidebar-nav.is-collapsed .app-workspace-sidebar-account { width: 100%; align-items: center; }
 .app-user-workspace .app-workspace-sidebar-nav.is-collapsed .app-workspace-sidebar-checkin { width: 48px; }
 .app-user-workspace .app-workspace-sidebar-nav.is-collapsed .app-workspace-sidebar-storage { width: 40px; }
-.app-user-workspace .app-workspace-sidebar-nav.is-collapsed .app-workspace-sidebar-profile-row { width: 100%; justify-content: center; }
-.app-user-workspace .app-workspace-sidebar-nav.is-collapsed .app-workspace-sidebar-profile { width: 48px; min-width: 48px; flex: 0 0 48px; margin-inline: auto; }
+.app-user-workspace .app-workspace-sidebar-nav.is-collapsed .app-workspace-sidebar-profile-row { width: 100%; justify-content: center; gap: 4px; }
+.app-user-workspace .app-workspace-sidebar-nav.is-collapsed .app-workspace-sidebar-profile { width: 48px; min-width: 48px; flex: 0 0 48px; }
 .app-user-workspace .app-workspace-sidebar-nav.is-collapsed .app-workspace-sidebar-notification-spacer { display: none; }
+.app-user-workspace .app-workspace-sidebar-nav.is-collapsed .app-workspace-sidebar-collapse-toggle.is-collapsed { margin-top: 4px; }
 
 .app-user-workspace .app-workspace-nav-link {
     position: relative;
@@ -713,6 +714,13 @@
 .app-product-workspace button:has(> svg):not(:has(> span)):focus-visible,
 .app-product-overlays button:has(> svg):not(:has(> span)):focus-visible { outline: 2px solid var(--product-focus-ring); outline-offset: 2px; }
 
+/* 侧栏自绘图标按钮（收起/展开切换等）不套用浮层 accent 光晕，悬浮表现与导航菜单保持一致。 */
+.app-user-workspace .app-workspace-sidebar button:has(> svg):not(:has(> span)):not(:disabled):hover {
+    color: var(--user-ink) !important;
+    background: var(--user-surface-hover) !important;
+    box-shadow: none !important;
+}
+
 /* 列表进入节奏：卡片和图片错开出现，慢网络时仍有内容层次。 */
 .app-product-workspace :is(.product-collection-card, .library-card, .task-grid-card, .task-record-row, .skill-library-card, .plugin-card) { animation: product-card-enter var(--product-enter) var(--product-ease) both; }
 .app-product-workspace :is(.product-collection-card, .library-card, .task-grid-card, .task-record-row, .skill-library-card, .plugin-card):nth-child(2) { animation-delay: 45ms; }