docs: update initial release notes

Author: Ryson-32

docs/release-notes.md

@@ -1,14 +1,41 @@
 # SubBoost v2.4.0
 
-## Highlights
+## 中文
 
-- Publishes SubBoost from a clean release repository with fresh public Git history.
-- Keeps the AGPL-3.0-only public source, local deployment app, shared packages, and release workflow together in the canonical `SubBoost/subboost` repository.
-- Ships the current local deployment experience, shared parser/generator logic, template tools, rule management UI, and self-host release assets as one cohesive source snapshot.
-- Keeps the one-click deployment assets available through the release: `install.sh`, `release.json`, `docker-compose.image.yml`, and `subboost-manager`.
+### 初始发布
 
-## Upgrade Notes
+这是 SubBoost 的首次公开发布。这个版本提供一个可以自行部署的 SubBoost 包，适合希望在自己的服务器上运行 SubBoost，并管理订阅转换、模板和规则配置的用户。
 
-- No manual migration is required for existing deployments.
-- Existing deployments can keep using the normal `subboost update` flow.
-- The repository is temporarily kept private while final rollout validation finishes.
+### 包含内容
+
+- 一键部署脚本和 Docker Compose 配置，用于在 Linux 服务器上安装 SubBoost。
+- 本地 Web 管理界面，用于创建管理员账号，并管理订阅、模板和规则。
+- 共享的订阅解析、订阅生成、模板处理和规则处理能力。
+- GitHub Release 资产：`install.sh`、`release.json`、`docker-compose.image.yml` 和 `subboost-manager`。
+- 基于 AGPL-3.0-only 许可证发布的公开源码。
+
+### 安装和更新
+
+- 这是首次发布，新安装不需要人工迁移。
+- 安装后，后续版本可以继续使用 `subboost update` 更新。
+- 建议妥善保存 `/opt/subboost/.env` 和数据库备份，方便以后迁移或恢复。
+
+## English
+
+### Initial Release
+
+This is the first public release of SubBoost. This version provides a self-hostable SubBoost package for users who want to run SubBoost on their own server and manage subscription conversion, templates, and rule configuration.
+
+### What's Included
+
+- A one-click deployment script and Docker Compose configuration for installing SubBoost on a Linux server.
+- A local web management interface for creating an administrator account and managing subscriptions, templates, and rules.
+- Shared subscription parsing, subscription generation, template processing, and rule processing capabilities.
+- GitHub Release assets: `install.sh`, `release.json`, `docker-compose.image.yml`, and `subboost-manager`.
+- Public source code released under the AGPL-3.0-only license.
+
+### Installation and Updates
+
+- This is the first release, so new installations do not require manual migration.
+- After installation, future versions can continue to be updated with `subboost update`.
+- Keep `/opt/subboost/.env` and database backups safe so future migration or recovery is easier.