v4.0.0-beta.5

What's Changed

• docs(agent-skill): 更新 SQL 下载链接为 txt 格式 by @hustcc in #1049
• Export registerEngine and update version to 4.0.0 by @yvonneyx in #1051
• Refactor event handling and usage statistics logic by @yvonneyx in #1053
• feat(site): redesign homepage and refine AI playground by @yvonneyx in #1054
• chore(deps): 升级 zod 至 v4 并适配 API，修复 Vulnerabilities by @hustcc in #1057
• feat: integrate semantic context into AVA skill and CLI by @yvonneyx in #1058
• feat(site): add Chinese pages under /zh by @yvonneyx in #1056

Full Changelog: v4.0.0-beta.4...v4.0.0-beta.5