feat(edit-current): allow editing current provider and sync to live on save\n\n- Enable Edit button for current provider in UI\n- On update_provider, if updating current provider, write changes to live config (Claude/Codex)\n- Maintain SSOT in cc-switch/config.json with atomic writes

src/components/ProviderList.tsx

@@ -94,7 +94,6 @@ const ProviderList: React.FC<ProviderListProps> = ({
                   <button
                     className="edit-btn"
                     onClick={() => onEdit(provider.id)}
-                    disabled={isCurrent}
                   >
                     编辑
                   </button>