feat(portal): auto-switch light/dark theme via prefers-color-scheme with top-right toggle

stacks/portal/web/src/components/CommandPalette.tsx

@@ -133,32 +133,25 @@ export const CommandPalette: React.FC = () => {
         run: () => copyCmd('ssh mini -t "tmux attach -t agy"', '接力 AGY'),
       },
       {
-        id: 'theme-light',
+        id: 'theme-system',
-        title: '切换主题: 浅色纯净 (Shadcn Light)',
+        title: '主题模式: 跟随设备系统深浅色自动切换',
-        hint: 'zinc-light',
+        hint: 'system',
         type: '主题',
-        run: () => setTheme('zinc-light'),
+        run: () => setTheme('system'),
+      },
+      {
+        id: 'theme-light',
+        title: '切换主题: 浅色纯净 (Light)',
+        hint: 'light',
+        type: '主题',
+        run: () => setTheme('light'),
       },
       {
         id: 'theme-dark',
-        title: '切换主题: 深色极客 (Shadcn Dark)',
+        title: '切换主题: 深色极客 (Dark)',
-        hint: 'zinc-dark',
+        hint: 'dark',
         type: '主题',
-        run: () => setTheme('zinc-dark'),
+        run: () => setTheme('dark'),
-      },
-      {
-        id: 'theme-cat',
-        title: '切换主题: Catppuccin Mocha',
-        hint: 'catppuccin',
-        type: '主题',
-        run: () => setTheme('catppuccin'),
-      },
-      {
-        id: 'theme-nord',
-        title: '切换主题: Nord 极地霜蓝',
-        hint: 'nord',
-        type: '主题',
-        run: () => setTheme('nord'),
       },
     ];
   }, [getEffectiveMode, setShowAgyModal, setTheme, triggerAction, copyCmd]);

stacks/portal/web/src/components/TopRibbon.tsx

@@ -1,14 +1,7 @@
 import React from 'react';
-import { Search, Terminal } from 'lucide-react';
+import { Moon, Search, Sun, Terminal } from 'lucide-react';
 import { usePortalStore } from '../store/usePortalStore';
-import type { RouteModeId, ThemeId } from '../types/telemetry';
+import type { RouteModeId } from '../types/telemetry';
-
-const THEMES: Array<{ id: ThemeId; label: string; dot: string }> = [
-  { id: 'zinc-dark', label: '深色极客', dot: '#18181b' },
-  { id: 'zinc-light', label: '浅色纯净', dot: '#f8fafc' },
-  { id: 'catppuccin', label: 'Catppuccin', dot: '#cba6f7' },
-  { id: 'nord', label: 'Nord', dot: '#88c0d0' },
-];
 
 const MODES: Array<{ id: RouteModeId; label: string }> = [
   { id: 'auto', label: '智能路由' },
@@ -20,9 +13,11 @@ const MODES: Array<{ id: RouteModeId; label: string }> = [
 export const TopRibbon: React.FC = () => {
   const {
     theme,
+    resolvedTheme,
     routeMode,
     telemetry,
     setTheme,
+    toggleTheme,
     setRouteMode,
     setShowAgyModal,
     setShowCmdPalette,
@@ -100,7 +95,7 @@ export const TopRibbon: React.FC = () => {
           </div>
         </div>
 
-        {/* Right: Search (Cmd+K), Route Switcher, Theme Switcher, Terminal Button */}
+        {/* Right: Search (Cmd+K), Route Switcher, AGY Terminal, Top-Right Theme Switcher */}
         <div className="flex items-center gap-2">
           <button
             onClick={() => setShowCmdPalette(true)}
@@ -109,7 +104,7 @@ export const TopRibbon: React.FC = () => {
           >
             <span className="flex items-center gap-1.5" style={{ color: 'var(--text-muted)' }}>
               <Search className="w-3.5 h-3.5" />
-              <span className="hidden sm:inline">搜索或执行指令...</span>
+              <span className="hidden sm:inline">搜索...</span>
             </span>
             <kbd
               className="px-1.5 py-0.5 text-[10px] font-mono-num rounded hl-muted"
@@ -140,32 +135,6 @@ export const TopRibbon: React.FC = () => {
             ))}
           </div>
 
-          <div className="flex items-center p-0.5 rounded-lg hl-muted border hl-border text-xs">
-            {THEMES.map((t) => (
-              <button
-                key={t.id}
-                onClick={() => setTheme(t.id)}
-                className="px-2 py-1 rounded-md font-medium transition-all flex items-center gap-1.5 cursor-pointer"
-                style={
-                  theme === t.id
-                    ? {
-                        backgroundColor: 'var(--bg-card)',
-                        color: 'var(--text-main)',
-                        boxShadow: '0 1px 2px rgba(0,0,0,0.08)',
-                      }
-                    : { color: 'var(--text-muted)' }
-                }
-                title={t.label}
-              >
-                <span
-                  className="w-2 h-2 rounded-full border border-black/10"
-                  style={{ backgroundColor: t.dot }}
-                />
-                <span className="hidden lg:inline">{t.label}</span>
-              </button>
-            ))}
-          </div>
-
           <button
             onClick={() => setShowAgyModal(true)}
             className="hl-btn-primary px-3 py-1.5 text-xs flex items-center gap-1.5 cursor-pointer"
@@ -173,6 +142,42 @@ export const TopRibbon: React.FC = () => {
             <Terminal className="w-3.5 h-3.5" />
             <span>AGY 终端</span>
           </button>
+
+          {/* Top-Right Mainstream Theme Switcher (Auto System + Light/Dark 2 Mainstream Themes) */}
+          <div className="flex items-center p-0.5 rounded-lg hl-muted border hl-border text-xs">
+            <button
+              onClick={toggleTheme}
+              className="px-2.5 py-1 rounded-md font-medium transition-all flex items-center gap-1.5 cursor-pointer"
+              style={{
+                backgroundColor: 'var(--bg-card)',
+                color: 'var(--text-main)',
+                boxShadow: '0 1px 2px rgba(0,0,0,0.08)',
+              }}
+              title="点击切换深色 / 浅色主题"
+            >
+              {resolvedTheme === 'dark' ? (
+                <>
+                  <Moon className="w-3.5 h-3.5" />
+                  <span className="hidden sm:inline">深色</span>
+                </>
+              ) : (
+                <>
+                  <Sun className="w-3.5 h-3.5" />
+                  <span className="hidden sm:inline">浅色</span>
+                </>
+              )}
+            </button>
+            {theme !== 'system' && (
+              <button
+                onClick={() => setTheme('system')}
+                className="px-2 py-1 rounded-md text-[11px] transition-all cursor-pointer"
+                style={{ color: 'var(--text-muted)' }}
+                title="恢复跟随设备系统深浅色自动切换"
+              >
+                自动
+              </button>
+            )}
+          </div>
         </div>
       </div>
     </header>