chore: add 2.0.3 release notes

Author: dux-web

CHANGELOG.md

@@ -8,6 +8,17 @@ All notable changes to this project will be documented in this file.
 
 - Paused automatic memory queue processing when no eligible extraction provider is configured, preventing repeated failures and UI refresh churn while preserving queued work until a provider becomes available.
 
+## [2.0.3] - 2026-07-21
+
+### Added
+
+- Added project-level custom environment variables in the project create/edit dialog. New local, WSL, remote, and AI CLI terminals inherit these variables when opened.
+
+### Fixed
+
+- Fixed Homebrew cask download URLs and SHA256 generation to use the stable public DMG asset names.
+- Prevented project environment variables from overriding Codux runtime protocol variables reserved under `CODUX_*` and `DMUX_*`.
+
 ## [2.0.2] - 2026-07-16
 
 ### Changed

CHANGELOG.zh-CN.md

@@ -8,6 +8,17 @@
 
 - 未配置可用的记忆提取 Provider 时暂停自动消费记忆队列，避免反复失败和 UI 刷新，同时保留待处理任务并在 Provider 可用后继续处理。
 
+## [2.0.3] - 2026-07-21
+
+### 新增
+
+- 项目创建/编辑窗口新增项目级自定义环境变量，新开的本地、WSL、远程与 AI CLI 终端会继承这些变量。
+
+### 修复
+
+- 修复 Homebrew cask 下载地址和 SHA256 生成逻辑，统一使用稳定的公开 DMG 文件名。
+- 阻止项目环境变量覆盖 `CODUX_*` 和 `DMUX_*` 这些 Codux 运行时协议保留变量。
+
 ## [2.0.2] - 2026-07-16
 
 ### 调整