refactor(web): drop the settings entry from the space header

web/src/features/channel/SpaceRail.tsx

@@ -24,13 +24,12 @@ export function SpaceRail({ id, onCreate, onJoin }: RailProps) {
   </nav>;
 }
 
-/** 频道列表顶部:空间名与加密状态,点击打开空间设置 */
-export function SpaceHeader({ onSettings }: { onSettings: () => void }) {
+/** 频道列表顶部:空间名与加密状态。空间设置入口在顶栏 */
+export function SpaceHeader() {
   const channel = useWorkspace((s) => s.channel);
   const name = channel?.name || `${channel?.id.slice(0, 8) ?? ''}…`;
-  return <button type="button" className={styles.header} aria-label={`${name} 空间设置`} onClick={onSettings}>
+  return <div className={styles.header}>
     {channel?.mode === 'raw' ? <span className={styles.raw}>明文</span> : <Icon name="lock" size={14} />}
     <strong>{name}</strong>
-    <Icon name="settings" size={16} />
-  </button>;
+  </div>;
 }