fix: hide SHA when unavailable (show CI fallback), Home scrolls to top

components/CIStatusIndicator.tsx

@@ -77,14 +77,18 @@ export function CIStatusIndicator() {
       className={`flex items-center gap-2 px-3 py-1.5 rounded-full bg-white/90 dark:bg-gray-900/90 backdrop-blur-sm border border-gray-200 dark:border-gray-700 shadow-sm ${getStatusColor()}`}
     >
       <GitBranch size={14} className="text-gray-500 dark:text-gray-400" />
+      {process.env.NEXT_PUBLIC_COMMIT_SHA ? (
         <a
           href={`https://forgejo.riotpiao.com/rock/riotpiao.com/commit/${process.env.NEXT_PUBLIC_COMMIT_SHA}`}
           target="_blank"
           rel="noopener noreferrer"
           className="text-xs font-mono font-medium text-gray-600 dark:text-gray-300 hover:text-blue-600 dark:hover:text-blue-400"
         >
-        {process.env.NEXT_PUBLIC_COMMIT_SHA || 'dev'}
+          {process.env.NEXT_PUBLIC_COMMIT_SHA}
         </a>
+      ) : (
+        <span className="text-xs font-medium text-gray-600 dark:text-gray-300">CI</span>
+      )}
       <div className={`flex items-center gap-1 ${getStatusColor()}`}>
         {getStatusIcon()}
         <span className="text-xs font-semibold">{getStatusText()}</span>

components/Header.tsx

@@ -60,7 +60,7 @@ export default function Header() {
         </Link>
 
         <nav className="hidden md:flex gap-8 items-center">
-          <Link href="/" className="text-sm hover:text-blue-600 dark:hover:text-blue-400">{t.header.nav.home}</Link>
+          <button onClick={() => window.scrollTo({ top: 0, behavior: 'smooth' })} className="text-sm hover:text-blue-600 dark:hover:text-blue-400">{t.header.nav.home}</button>
           <button 
             onClick={() => setTerminalOpen(!terminalOpen)}
             className="text-sm hover:text-blue-600 dark:hover:text-blue-400"
@@ -239,7 +239,7 @@ export default function Header() {
 
       {open && (
         <div className="md:hidden border-t border-gray-200 dark:border-gray-800 p-4 space-y-4">
-          <Link href="/" className="block py-2 text-sm hover:text-blue-600">{t.header.nav.home}</Link>
+          <button onClick={() => { setOpen(false); window.scrollTo({ top: 0, behavior: 'smooth' }); }} className="block py-2 text-sm hover:text-blue-600">{t.header.nav.home}</button>
           <button 
             onClick={() => setTerminalOpen(!terminalOpen)}
             className="block py-2 text-sm hover:text-blue-600"

next.config.js

@@ -1,7 +1,4 @@
-const { execSync } = require('child_process');
-
-const commitSha = process.env.COMMIT_SHA
-  || (() => { try { return execSync('git rev-parse --short HEAD').toString().trim(); } catch { return 'dev'; } })();
+const commitSha = process.env.COMMIT_SHA || '';
 
 /** @type {import('next').NextConfig} */
 const nextConfig = {