Login: no title under the logo — the logo has the name (it is the image's alt text now)

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

web/src/Login.tsx

@@ -17,8 +17,7 @@ export default function Login({ onLogin }: { onLogin: () => void }) {
   return (
     <div className="center">
       <form className="login" onSubmit={submit}>
-        <img className="login-logo" src="/icons/logo.png" alt="" width={176} height={176} />
-        <h1>Ham Lab</h1>
+        <img className="login-logo" src="/icons/logo.png" alt="Ham Lab" width={176} height={176} />
         <input type="password" autoFocus autoComplete="current-password" placeholder="password"
           value={pw} onChange={(e) => setPw(e.target.value)} disabled={busy} />
         <button disabled={busy || !pw}>{busy && <Spinner />}{busy ? 'Signing in…' : 'Sign in'}</button>