feat: add official X/Twitter account (@multica_hq) across the platform

- README.md & README.zh-CN.md: add X/Twitter link to nav
- Landing header: add X icon button alongside GitHub
- Landing footer: add X/Twitter link in Company section (en + zh)
- Layout metadata: set twitter:site and twitter:creator to @multica_hq

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

README.md

@@ -21,7 +21,7 @@ Assign tasks, track progress, compound skills — manage your human + agent work
 [![License](https://img.shields.io/badge/License-Apache_2.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 [![GitHub stars](https://img.shields.io/github/stars/multica-ai/multica?style=flat)](https://github.com/multica-ai/multica/stargazers)
 
-[Website](https://multica.ai) · [Cloud](https://multica.ai/app) · [Self-Hosting](SELF_HOSTING.md) · [Contributing](CONTRIBUTING.md)
+[Website](https://multica.ai) · [Cloud](https://multica.ai/app) · [Self-Hosting](SELF_HOSTING.md) · [Contributing](CONTRIBUTING.md) · [X / Twitter](https://x.com/multica_hq)
 
 **English | [简体中文](README.zh-CN.md)**
 

README.zh-CN.md

@@ -21,7 +21,7 @@
 [![License](https://img.shields.io/badge/License-Apache_2.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 [![GitHub stars](https://img.shields.io/github/stars/multica-ai/multica?style=flat)](https://github.com/multica-ai/multica/stargazers)
 
-[官网](https://multica.ai) · [云服务](https://multica.ai/app) · [自部署指南](SELF_HOSTING.md) · [参与贡献](CONTRIBUTING.md)
+[官网](https://multica.ai) · [云服务](https://multica.ai/app) · [自部署指南](SELF_HOSTING.md) · [参与贡献](CONTRIBUTING.md) · [X / Twitter](https://x.com/multica_hq)
 
 **[English](README.md) | 简体中文**
 

apps/web/app/layout.tsx

@@ -41,6 +41,8 @@ export const metadata: Metadata = {
   },
   twitter: {
     card: "summary_large_image",
+    site: "@multica_hq",
+    creator: "@multica_hq",
   },
   alternates: {
     canonical: "/",

apps/web/features/landing/components/landing-header.tsx

@@ -5,7 +5,7 @@ import { MulticaIcon } from "@/components/multica-icon";
 import { cn } from "@/lib/utils";
 import { useAuthStore } from "@/features/auth";
 import { useLocale } from "../i18n";
-import { GitHubMark, githubUrl, headerButtonClassName } from "./shared";
+import { GitHubMark, XMark, githubUrl, twitterUrl, headerButtonClassName } from "./shared";
 
 export function LandingHeader({
   variant = "dark",
@@ -44,6 +44,14 @@ export function LandingHeader({
         </Link>
 
         <div className="flex items-center gap-2.5 sm:gap-3">
+          <Link
+            href={twitterUrl}
+            target="_blank"
+            rel="noreferrer"
+            className={headerButtonClassName("ghost", variant)}
+          >
+            <XMark className="size-3.5" />
+          </Link>
           <Link
             href={githubUrl}
             target="_blank"

apps/web/features/landing/components/shared.tsx

@@ -1,6 +1,7 @@
 import { cn } from "@/lib/utils";
 
 export const githubUrl = "https://github.com/multica-ai/multica";
+export const twitterUrl = "https://x.com/multica_hq";
 
 export function GitHubMark({ className }: { className?: string }) {
   return (
@@ -15,6 +16,19 @@ export function GitHubMark({ className }: { className?: string }) {
   );
 }
 
+export function XMark({ className }: { className?: string }) {
+  return (
+    <svg
+      viewBox="0 0 24 24"
+      aria-hidden="true"
+      className={className}
+      fill="currentColor"
+    >
+      <path d="M18.244 2.25h3.308l-7.227 8.26 8.502 11.24H16.17l-5.214-6.817L4.99 21.75H1.68l7.73-8.835L1.254 2.25H8.08l4.713 6.231zm-1.161 17.52h1.833L7.084 4.126H5.117z" />
+    </svg>
+  );
+}
+
 export function ImageIcon({ className }: { className?: string }) {
   return (
     <svg

apps/web/features/landing/i18n/en.ts

@@ -1,4 +1,4 @@
-import { githubUrl } from "../components/shared";
+import { githubUrl, twitterUrl } from "../components/shared";
 import type { LandingDict } from "./types";
 
 export const en: LandingDict = {
@@ -239,6 +239,7 @@ export const en: LandingDict = {
           { label: "About", href: "/about" },
           { label: "Open Source", href: "#open-source" },
           { label: "GitHub", href: githubUrl },
+          { label: "X / Twitter", href: twitterUrl },
         ],
       },
     },

apps/web/features/landing/i18n/zh.ts

@@ -1,4 +1,4 @@
-import { githubUrl } from "../components/shared";
+import { githubUrl, twitterUrl } from "../components/shared";
 import type { LandingDict } from "./types";
 
 export const zh: LandingDict = {
@@ -239,6 +239,7 @@ export const zh: LandingDict = {
           { label: "\u5173\u4e8e\u6211\u4eec", href: "/about" },
           { label: "\u5f00\u6e90", href: "#open-source" },
           { label: "GitHub", href: githubUrl },
+          { label: "X / Twitter", href: twitterUrl },
         ],
       },
     },