v0.3.0

What's Changed

• feat(quality): 第二阶段质量加固 by @hyls9527 in #20
• feat(product): 第三阶段产品化 — 自动更新、迁移成果反馈、代码签名框架 by @hyls9527 in #21
• fix: 修复审查发现的全部问题 by @hyls9527 in #22
• release: v0.3.0 版本号更新 by @hyls9527 in #23

Full Changelog: v0.2.1...v0.3.0