add uninstall

.gitignore

@@ -6,5 +6,11 @@
 /dist/
 /phpunit.xml
 /.intelephense/
+.env
+.env.*
+!/env.example
+/wp-config.php
+/wordpress/
+/wp-content/
 .DS_Store
 *.zip

README.md

@@ -57,6 +57,10 @@ Credentials are stored in the WordPress `wpt_settings` option and are not render
 
 Use HTTPS and restrict database access appropriately because WordPress options are database-backed. Production sites should configure a real cron runner for reliable translation processing.
 
+## Uninstalling
+
+Uninstalling Btranslate permanently deletes its settings and credentials, retranslation batch state, all pending Btranslate cron events, and every site's `{$wpdb->prefix}wpt_translations` table. This removes all persisted translations. Deactivating the plugin does not delete these records.
+
 ## Development
 
 Install development dependencies with `composer install`. The project includes WordPress API stubs for Intelephense and PHPUnit tests that use fake providers and storage, so they do not need WordPress, a database, credentials, or network access.

README.zh-CN.md

@@ -56,6 +56,10 @@ Btranslate 是一个 WordPress 插件骨架，使用百度翻译 API 持久化
 
 由于 WordPress 选项由数据库保存，请使用 HTTPS 并适当限制数据库访问权限。生产站点应配置真实的 Cron 执行器，确保翻译任务可靠运行。
 
+## 卸载
+
+卸载 Btranslate 会永久删除其设置和凭据、重新翻译批处理状态、所有待执行的 Btranslate Cron 事件，以及每个站点的 `{$wpdb->prefix}wpt_translations` 表。这会删除所有已持久化的翻译。停用插件不会删除这些记录。
+
 ## 开发
 
 使用 `composer install` 安装开发依赖。项目包含用于 Intelephense 的 WordPress API 存根，以及使用伪造提供程序和存储的 PHPUnit 测试；因此测试不需要 WordPress、数据库、凭据或网络访问。

uninstall.php

@@ -0,0 +1,40 @@
+<?php
+/**
+ * Removes all data created by Btranslate.
+ *
+ * @package WPT
+ */
+
+if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) {
+	exit;
+}
+
+function wpt_uninstall_site_data() {
+	global $wpdb;
+
+	wp_clear_scheduled_hook( 'wpt_process_translation' );
+	wp_clear_scheduled_hook( 'wpt_process_term_translation' );
+	wp_clear_scheduled_hook( 'wpt_process_seo_output_translation' );
+	delete_option( 'wpt_settings' );
+	delete_option( 'wpt_retranslation_batch' );
+
+	$table_name = $wpdb->prefix . 'wpt_translations';
+	$wpdb->query( "DROP TABLE IF EXISTS {$table_name}" );
+}
+
+if ( is_multisite() ) {
+	$site_ids = get_sites(
+		array(
+			'fields' => 'ids',
+			'number' => 0,
+		)
+	);
+
+	foreach ( $site_ids as $site_id ) {
+		switch_to_blog( $site_id );
+		wpt_uninstall_site_data();
+		restore_current_blog();
+	}
+} else {
+	wpt_uninstall_site_data();
+}