Refactor payload schemas to use string IDs

Replaced Type.Union([Type.Number(), Type.String()]) with Type.String for group_id, user_id, and similar fields across all action payload schemas to standardize input types. Also made minor improvements to error handling, return types, and removed unused imports for better code clarity and consistency.

packages/napcat-onebot/action/go-cqhttp/SendGroupNotice.ts

@@ -5,7 +5,7 @@ import { unlink } from 'node:fs/promises';
 import { Static, Type } from '@sinclair/typebox';
 
 export const SendGroupNoticePayloadSchema = Type.Object({
-  group_id: Type.Union([Type.Number(), Type.String()], { description: '群号' }),
+  group_id: Type.String({ description: '群号' }),
   content: Type.String({ description: '公告内容' }),
   image: Type.Optional(Type.String({ description: '公告图片路径或 URL' })),
   pinned: Type.Union([Type.Number(), Type.String()], { default: 0, description: '是否置顶 (0/1)' }),
@@ -60,6 +60,5 @@ export class SendGroupNotice extends OneBotAction<SendGroupNoticePayload, void>
     if (!publishGroupBulletinResult || publishGroupBulletinResult.ec !== 0) {
       throw new Error(`设置群公告失败,错误信息:${publishGroupBulletinResult?.em}`);
     }
-    return null;
   }
 }