feat(landing): add install command copy block to hero section

Adds a terminal-style one-click copy block below the CTA buttons showing
the curl install command, with a copy-to-clipboard button that shows a
checkmark on success.

.env.example

@@ -22,6 +22,8 @@ MULTICA_CODEX_WORKDIR=
 MULTICA_CODEX_TIMEOUT=20m
 
 # Email (Resend)
+# For local/dev use, leave RESEND_API_KEY empty — codes print to stdout, and master code 888888 works.
+# For production, set your Resend API key and change RESEND_FROM_EMAIL to a domain verified in your Resend account.
 RESEND_API_KEY=
 RESEND_FROM_EMAIL=noreply@multica.ai
 

README.md

@@ -18,7 +18,6 @@ The open-source managed agents platform.<br/>
 Turn coding agents into real teammates — assign tasks, track progress, compound skills.
 
 [![CI](https://github.com/multica-ai/multica/actions/workflows/ci.yml/badge.svg)](https://github.com/multica-ai/multica/actions/workflows/ci.yml)
-[![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) · [X](https://x.com/multica_hq) · [Self-Hosting](SELF_HOSTING.md) · [Contributing](CONTRIBUTING.md)

README.zh-CN.md

@@ -18,7 +18,6 @@
 将编码 Agent 变成真正的队友——分配任务、跟踪进度、积累技能。
 
 [![CI](https://github.com/multica-ai/multica/actions/workflows/ci.yml/badge.svg)](https://github.com/multica-ai/multica/actions/workflows/ci.yml)
-[![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) · [X](https://x.com/multica_hq) · [自部署指南](SELF_HOSTING.md) · [参与贡献](CONTRIBUTING.md)

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

@@ -1,5 +1,6 @@
 "use client";
 
+import { useCallback, useState } from "react";
 import Image from "next/image";
 import Link from "next/link";
 import { useAuthStore } from "@multica/core/auth";
@@ -52,6 +53,8 @@ export function LandingHero() {
                 GitHub
               </Link>
             </div>
+
+            <InstallCommand />
           </div>
 
           <div className="mt-10 flex items-center justify-center gap-8">
@@ -87,6 +90,64 @@ export function LandingHero() {
   );
 }
 
+const INSTALL_COMMAND =
+  "curl -fsSL https://raw.githubusercontent.com/multica-ai/multica/main/scripts/install.sh | bash";
+
+function InstallCommand() {
+  const [copied, setCopied] = useState(false);
+
+  const handleCopy = useCallback(async () => {
+    try {
+      await navigator.clipboard.writeText(INSTALL_COMMAND);
+      setCopied(true);
+      setTimeout(() => setCopied(false), 2000);
+    } catch {
+      // ignore
+    }
+  }, []);
+
+  return (
+    <div className="mx-auto mt-6 max-w-fit">
+      <button
+        type="button"
+        onClick={handleCopy}
+        className="group flex items-center gap-3 rounded-lg border border-white/10 bg-white/5 px-4 py-2.5 font-mono text-[13px] text-white/70 backdrop-blur-sm transition-colors hover:border-white/20 hover:bg-white/8 hover:text-white/90"
+      >
+        <span className="text-white/40">$</span>
+        <span className="select-all">{INSTALL_COMMAND}</span>
+        <span className="ml-1 flex size-5 shrink-0 items-center justify-center text-white/40 transition-colors group-hover:text-white/70">
+          {copied ? (
+            <svg
+              viewBox="0 0 24 24"
+              fill="none"
+              stroke="currentColor"
+              strokeWidth="2"
+              strokeLinecap="round"
+              strokeLinejoin="round"
+              className="size-3.5 text-green-400"
+            >
+              <polyline points="20 6 9 17 4 12" />
+            </svg>
+          ) : (
+            <svg
+              viewBox="0 0 24 24"
+              fill="none"
+              stroke="currentColor"
+              strokeWidth="2"
+              strokeLinecap="round"
+              strokeLinejoin="round"
+              className="size-3.5"
+            >
+              <rect x="9" y="9" width="13" height="13" rx="2" ry="2" />
+              <path d="M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1" />
+            </svg>
+          )}
+        </span>
+      </button>
+    </div>
+  );
+}
+
 function LandingBackdrop() {
   return (
     <div className="pointer-events-none absolute inset-0">

server/internal/handler/auth.go

@@ -241,6 +241,7 @@ func (h *Handler) SendCode(w http.ResponseWriter, r *http.Request) {
 	}
 
 	if err := h.EmailService.SendVerificationCode(email, code); err != nil {
+		slog.Error("failed to send verification code", "email", email, "error", err)
 		writeError(w, http.StatusInternalServerError, "failed to send verification code")
 		return
 	}