Load napcat.json, use o3HookMode & bypass

Add loadNapcatConfig helper that reads napcat.json (json5), validates with Ajv and fills defaults for early pre-login use. Change NativePacketHandler.init signature to accept an o3HookMode flag and forward it to native initHook. Update framework and shell to use loadNapcatConfig (remove duplicated file-reading logic) and pass configured o3HookMode and bypass options into Napi2NativeLoader/native packet initialization. Clean up imports (Ajv, path, fs, json5) and remove the old loadBypassConfig helper.

packages/napcat-core/helper/config.ts

@@ -1,7 +1,10 @@
 import { ConfigBase } from '@/napcat-core/helper/config-base';
 import { NapCatCore } from '@/napcat-core/index';
 import { Type, Static } from '@sinclair/typebox';
-import { AnySchema } from 'ajv';
+import Ajv, { AnySchema } from 'ajv';
+import path from 'node:path';
+import fs from 'node:fs';
+import json5 from 'json5';
 
 export const BypassOptionsSchema = Type.Object({
   hook: Type.Boolean({ default: true }),
@@ -25,6 +28,26 @@ export const NapcatConfigSchema = Type.Object({
 
 export type NapcatConfig = Static<typeof NapcatConfigSchema>;
 
+/**
+ * 从指定配置目录读取 napcat.json，按 NapcatConfigSchema 校验并填充默认值
+ * 用于登录前（无 NapCatCore 实例时）的早期配置读取
+ */
+export function loadNapcatConfig (configPath: string): NapcatConfig {
+  const ajv = new Ajv({ useDefaults: true, coerceTypes: true });
+  const validate = ajv.compile<NapcatConfig>(NapcatConfigSchema);
+  let data: Record<string, unknown> = {};
+  try {
+    const configFile = path.join(configPath, 'napcat.json');
+    if (fs.existsSync(configFile)) {
+      data = json5.parse(fs.readFileSync(configFile, 'utf-8'));
+    }
+  } catch {
+    // 读取失败时使用 schema 默认值
+  }
+  validate(data);
+  return data as NapcatConfig;
+}
+
 export class NapCatConfigLoader extends ConfigBase<NapcatConfig> {
   constructor (core: NapCatCore, configPath: string, schema: AnySchema) {
     super('napcat', core, configPath, schema);