bugs fixes due to reges curruption

frontend/src/components/SettingsModal.jsx

@@ -167,7 +167,7 @@ function RegistrationTab({ onFeaturesChanged }) {
         <div className="settings-section-label">Registration Code</div>
         <div style={{ display: 'flex', gap: 8, marginTop: 6 }}>
           <input className="input flex-1" placeholder="Enter registration code" value={regCode}
-            onChange={e = /> setRegCode(e.target.value)} onKeyDown={e => e.key === 'Enter' && handleRegister()} autoComplete="new-password" />
+            onChange={e => setRegCode(e.target.value)} onKeyDown={e => e.key === 'Enter' && handleRegister()} autoComplete="new-password" />
           <button className="btn btn-primary btn-sm" onClick={handleRegister} disabled={regLoading}>
             {regLoading ? '…' : 'Register'}
           </button>