fix(core): fix lint/type issues and small refactors

ts/actions/script-action.ts

@@ -3,7 +3,7 @@ import * as fs from 'node:fs';
 import process from 'node:process';
 import { exec } from 'node:child_process';
 import { promisify } from 'node:util';
-import { Action, type IActionConfig, type IActionContext } from './base-action.ts';
+import { Action, type IActionContext } from './base-action.ts';
 import { logger } from '../logger.ts';
 
 const execAsync = promisify(exec);

ts/actions/webhook-action.ts

@@ -1,7 +1,7 @@
 import * as http from 'node:http';
 import * as https from 'node:https';
 import { URL } from 'node:url';
-import { Action, type IActionConfig, type IActionContext } from './base-action.ts';
+import { Action, type IActionContext } from './base-action.ts';
 import { logger } from '../logger.ts';
 import { WEBHOOK } from '../constants.ts';
 
@@ -81,7 +81,7 @@ export class WebhookAction extends Action {
    * @param method HTTP method (GET or POST)
    * @param timeout Request timeout in milliseconds
    */
-  private async callWebhook(
+  private callWebhook(
     context: IActionContext,
     method: 'GET' | 'POST',
     timeout: number,