fix: 写盘 openclaw.json 后自动重启 gateway

- openclaw-provider.js: 新增 restartGateway()，在 removeProviderByName
  和 applyFullProviderFromVps 写盘成功后均调用，确保 inactive/active
  两路都能触发重启
- client.js: _updateOpenClawOrigin 去掉 CLAWD_OPENCLAW_GATEWAY_PKILL
  env var 门控，origin 变更后默认重启

Made-with: Cursor

lib/client.js

@@ -551,16 +551,11 @@ class ClawClient {
       writeFileSync(configFile, `${JSON.stringify(config, null, 2)}\n`, 'utf8');
       log.info('clawd', `openclaw config 已更新: ${newOrigin}`);
 
-      // 默认不再 pkill gateway（观察是否会自行重载）；恢复旧行为：CLAWD_OPENCLAW_GATEWAY_PKILL=1
-      if (process.env.CLAWD_OPENCLAW_GATEWAY_PKILL === '1') {
-        try {
-          execSync('pkill -9 -x openclaw-gateway', { timeout: 3000 });
-          log.info('clawd', 'openclaw-gateway 已终止，等待自动重启');
-        } catch (_) {
-          log.info('clawd', 'openclaw-gateway 进程不存在，无需终止');
-        }
-      } else {
-        log.info('clawd', '已跳过 openclaw-gateway pkill（需旧行为请设 CLAWD_OPENCLAW_GATEWAY_PKILL=1）');
+      try {
+        execSync('pkill -9 -x openclaw-gateway', { timeout: 3000 });
+        log.info('clawd', 'openclaw-gateway 已终止，等待自动重启');
+      } catch (_) {
+        log.info('clawd', 'openclaw-gateway 进程不存在，无需终止');
       }
     } catch (e) {
       log.warn('clawd', `openclaw config 更新失败: ${e.message}`);