完善UI

core/frontend/src/App.tsx

@@ -1205,7 +1205,7 @@ export function App() {
 
   return (
     <div className="app">
-      <Sidebar page={page} navigate={navigate} user={currentUser} canManageBilling={isOwner} products={products} projects={projects} productTotal={productTotal} projectTotal={projectTotal} aiUnread={aiUnread} onOpenAdmin={() => navigateAdmin("")} />
+      <Sidebar page={page} navigate={navigate} user={currentUser} team={currentTeam} canManageBilling={isOwner} products={products} projects={projects} productTotal={productTotal} projectTotal={projectTotal} aiUnread={aiUnread} onOpenAdmin={() => navigateAdmin("")} accountOpen={accountAnchor !== null} onOpenAccount={(rect) => setAccountAnchor((prev) => (prev ? null : rect))} />
       <main>
         <Decorations />
         <header className="topbar">
@@ -1224,19 +1224,6 @@ export function App() {
               <IconKitSvg name="bell" />
               {unreadCount > 0 && <span className="count-noti">{unreadCount}</span>}
             </button>
-            <button
-              className="topbar-avatar"
-              type="button"
-              title="账户"
-              aria-haspopup="menu"
-              aria-expanded={accountAnchor !== null}
-              onClick={(event) => {
-                const rect = event.currentTarget.getBoundingClientRect();
-                setAccountAnchor((prev) => (prev ? null : rect));
-              }}
-            >
-              {currentUser.avatar_url ? <img src={currentUser.avatar_url} alt="头像" /> : <span>{avatarChar}</span>}
-            </button>
           </div>
         </header>
         <div className="content" id="page-content" key={page}>

core/frontend/src/components/app-shell.tsx

@@ -1,6 +1,6 @@
 import { useEffect, useLayoutEffect, useMemo, useRef, useState } from "react";
 import { createPortal } from "react-dom";
-import { AlertCircle, Boxes, Check, ChevronDown, Info, LogOut, Settings, UsersRound } from "lucide-react";
+import { AlertCircle, Boxes, Check, ChevronDown, ChevronRight, Info, LogOut, Settings, UsersRound } from "lucide-react";
 import { IconKitSvg } from "./IconKitSvg";
 import { ConfirmModal, useBodyScrollLock, useOverlayTransition } from "./overlays";
 import type { Product, Project, Team, User } from "../types";
@@ -101,9 +101,9 @@ function CommandPalette({ open, onClose, navigate, canManageBilling = true }: {
 
 type Navigate = (page: Page) => void;
 
-// 账户下拉菜单 —— 忠实搬设计稿 shell.js 的 accountMenuHtml + toggleAccountMenu 定位逻辑。
-// 触发器(侧栏 .user / 顶栏头像)传入自己的 DOMRect 当锚点;菜单 fixed 定位、右对齐锚点、
-// 越界自动翻到锚点上方,并钳进视口。点外部 / Esc 收起。各项 navigate,退出走 logout。
+// 账户下拉菜单 —— 触发器为侧栏左下角 .org-switcher;菜单 fixed 定位。
+// 锚点在视口左半边时左对齐并向上展开,否则右对齐向下展开;越界翻转并钳进视口。
+// 点外部 / Esc 收起。各项 navigate,退出走 logout。
 // 认证定调:头像下方第二行展示「用户名」(user.username),本项目不用邮箱。
 const ACCOUNT_ITEMS: { act: Page; icon: string; label: string }[] = [
   { act: "settings", icon: "settings", label: "个人设置" },
@@ -137,11 +137,15 @@ export function AccountMenu({ open, anchorRect, onClose, navigate, logout, user,
     const menu = menuRef.current;
     const width = menu?.offsetWidth || 232;
     const height = menu?.offsetHeight || 260;
-    let left = rect.right - width;
-    if (left < 12) left = rect.left;
+    const fromLeft = rect.left < window.innerWidth / 2;
+    let left = fromLeft ? rect.left : rect.right - width;
     left = Math.min(Math.max(12, left), window.innerWidth - width - 12);
-    let top = rect.bottom + 8;
-    if (top + height > window.innerHeight - 12) top = Math.max(12, rect.top - height - 8);
+    let top = fromLeft ? rect.top - height - 8 : rect.bottom + 8;
+    if (top < 12 || top + height > window.innerHeight - 12) {
+      top = fromLeft
+        ? Math.min(rect.bottom + 8, window.innerHeight - height - 12)
+        : Math.max(12, rect.top - height - 8);
+    }
     setPos({ left, top });
   }, [rect]);
 
@@ -151,7 +155,7 @@ export function AccountMenu({ open, anchorRect, onClose, navigate, logout, user,
     const onDown = (event: MouseEvent) => {
       const target = event.target as Node;
       if (menuRef.current?.contains(target)) return;
-      if ((target as Element).closest?.(".user, .topbar-avatar")) return;
+      if ((target as Element).closest?.(".org-switcher")) return;
       onClose();
     };
     const onKey = (event: KeyboardEvent) => { if (event.key === "Escape") onClose(); };
@@ -403,10 +407,11 @@ const PAGE_TO_NAV: Partial<Record<Page, Page>> = {
   settingsNotify: "settings"
 };
 
-export function Sidebar({ page, navigate, user, canManageBilling = true, products, projects, productTotal, projectTotal, aiUnread, onOpenAdmin }: {
+export function Sidebar({ page, navigate, user, team, canManageBilling = true, products, projects, productTotal, projectTotal, aiUnread, onOpenAdmin, onOpenAccount, accountOpen = false }: {
   page: Page;
   navigate: Navigate;
   user: User;
+  team?: Team | null;
   // 主账号(owner=超管)才看得到「团队」「消费」入口;子账号隐藏(PMC#3)。默认 true 兼容旧调用。
   canManageBilling?: boolean;
   products: Product[];
@@ -417,6 +422,8 @@ export function Sidebar({ page, navigate, user, canManageBilling = true, product
   aiUnread?: number;
   // 平台超管入口:仅 user.is_platform_admin 时显示,点了进 /admin 后台
   onOpenAdmin?: () => void;
+  onOpenAccount?: (rect: DOMRect) => void;
+  accountOpen?: boolean;
 }) {
   const activeNav = PAGE_TO_NAV[page];
   // 子账号:导航里去掉「团队」「消费」两项(命令面板、账户菜单同步过滤)。
@@ -658,6 +665,20 @@ export function Sidebar({ page, navigate, user, canManageBilling = true, product
           </nav>
         )}
       </div>
+      <button
+        className="org-switcher"
+        type="button"
+        aria-label="打开账户菜单"
+        aria-haspopup="menu"
+        aria-expanded={accountOpen}
+        onClick={(event) => onOpenAccount?.(event.currentTarget.getBoundingClientRect())}
+      >
+        <span className="org-badge">
+          {user.avatar_url ? <img src={user.avatar_url} alt="" /> : (team?.name || user.username || "A").slice(0, 1).toUpperCase()}
+        </span>
+        <span className="org-switcher-name">{team?.name || user.username}</span>
+        <ChevronRight size={16} strokeWidth={1.8} />
+      </button>
     </aside>
     <CommandPalette open={paletteOpen} onClose={() => setPaletteOpen(false)} navigate={navigate} canManageBilling={canManageBilling} />
     </>

core/frontend/src/design-restraint.css

@@ -229,6 +229,7 @@ body.sidebar-collapsed .app { grid-template-columns: 96px 1fr; }
 /* ─── Sidebar ─── */
 aside.sidebar {
   --klein: #002fa7;
+  --st-black: #101012;
   padding: 0;
   border-right: 1px solid rgba(27, 32, 40, 0.08);
   background: rgba(28, 34, 43, 0.035);
@@ -414,6 +415,7 @@ aside.sidebar .nav-panel {
   height: calc(100vh - 116px);
   min-height: 0;
   padding-top: 14px;
+  padding-bottom: 82px;
   overflow-x: hidden;
   overflow-y: auto;
 }
@@ -535,6 +537,55 @@ aside.sidebar .nav-subitem.active::before {
   opacity: 1;
   box-shadow: 0 0 0 4px rgba(0, 47, 167, 0.10);
 }
+
+aside.sidebar .org-switcher {
+  position: absolute;
+  z-index: 6;
+  left: 12px;
+  right: 6px;
+  bottom: 24px;
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  margin: 0;
+  padding: 0;
+  border: 0;
+  background: transparent;
+  color: #31343a;
+  font: inherit;
+  font-size: 14px;
+  text-align: left;
+  cursor: pointer;
+}
+aside.sidebar .org-switcher-name {
+  min-width: 0;
+  flex: 1;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+aside.sidebar .org-switcher svg { width: 16px; height: 16px; flex-shrink: 0; color: #575f6f; }
+aside.sidebar .org-badge {
+  width: 34px;
+  height: 34px;
+  flex-shrink: 0;
+  display: grid;
+  place-items: center;
+  overflow: hidden;
+  border-radius: 50%;
+  color: #fff;
+  background: var(--st-black);
+  font-weight: 600;
+  font-size: 13px;
+}
+aside.sidebar .org-badge img { width: 100%; height: 100%; object-fit: cover; display: block; }
+body.sidebar-collapsed aside.sidebar .org-switcher {
+  left: 0;
+  right: 0;
+  justify-content: center;
+}
+body.sidebar-collapsed aside.sidebar .org-switcher-name,
+body.sidebar-collapsed aside.sidebar .org-switcher svg { display: none; }
 aside.sidebar .nav-subitem .pill-mini {
   margin-left: auto;
   min-width: 18px;
@@ -947,28 +998,6 @@ main { position: relative; background: #fff; min-width: 0; }
   letter-spacing: .02em;
 }
 
-/* ─── Topbar · 头像 ─── */
-.topbar-avatar {
-  width: 40px; height: 40px;
-  border-radius: var(--r-pill);
-  background: var(--accent-black);
-  color: var(--accent-white);
-  display: inline-flex; align-items: center; justify-content: center;
-  font-size: 13px; font-weight: 600;
-  cursor: pointer;
-  border: 1px solid var(--border-faint);
-  transition: transform var(--t-fast), box-shadow var(--t-base);
-  flex-shrink: 0;
-  overflow: hidden;
-}
-.topbar-avatar:hover {
-  transform: scale(1.04);
-  box-shadow: 0 0 0 3px var(--heat-12);
-}
-.topbar-avatar img {
-  width: 100%; height: 100%; object-fit: cover;
-}
-
 /* ─── Content ─── */
 .content {
   /* 对齐 HTML 设计稿 #page-content(24px 28px 60px):原 48px 顶距使全站标题整体偏低 24px */