feat(manager-web): add contact email november@taijiaicloud.com to footer

Surface a clickable mailto link in the page footer so users on
code.xinghanlab.com have a clear contact path without digging into
docs. Lives in the bottom border-separated band alongside the
'Platform Console' label.

i18n: 'Contact' key added to en (Contact) and zh (联系我们).

heicode/web/default/src/components/layout/components/footer.tsx

@@ -155,9 +155,16 @@ export function Footer(props: FooterProps) {
             © {currentYear} {displayName}.{' '}
             {props.copyright ?? t('footer.defaultCopyright')}
           </p>
-          <span className='text-muted-foreground/40 text-xs'>
-            {t('Platform Console')}
-          </span>
+          <div className='text-muted-foreground/40 flex flex-col items-center gap-1 text-xs sm:flex-row sm:gap-3'>
+            <a
+              href='mailto:november@taijiaicloud.com'
+              className='hover:text-foreground transition-colors duration-200'
+            >
+              {t('Contact')}: november@taijiaicloud.com
+            </a>
+            <span className='hidden sm:inline'>·</span>
+            <span>{t('Platform Console')}</span>
+          </div>
         </div>
       </div>
     </footer>

heicode/web/default/src/i18n/locales/en.json

@@ -2645,6 +2645,7 @@
     "Plan Title": "Plan Title",
     "Plan, dispatch and monitor multi-agent runs across tenants.": "Plan, dispatch and monitor multi-agent runs across tenants.",
     "Planned maintenance on Friday at 22:00 UTC...": "Planned maintenance on Friday at 22:00 UTC...",
+    "Contact": "Contact",
     "Platform": "Platform",
     "Platform Console": "Platform Console",
     "Playground": "Playground",

heicode/web/default/src/i18n/locales/zh.json

@@ -2645,6 +2645,7 @@
     "Plan Title": "套餐标题",
     "Plan, dispatch and monitor multi-agent runs across tenants.": "跨租户编排、分发并监控多 Agent 运行。",
     "Planned maintenance on Friday at 22:00 UTC...": "计划于周五 22:00 UTC 进行维护...",
+    "Contact": "联系我们",
     "Platform": "平台",
     "Platform Console": "平台控制台",
     "Playground": "游乐场",