v0.0.0-nightly.20260622

Changelog

• 60d2e5c refactor: 统一 .aiscan 数据目录到 DataDir()，默认跟随二进制路径
• e991166 refactor(cmd): restructure cmd/ — Arsenal always loaded, agent minimal, web as subcommand
• 5821bee fix: unified panic recovery for tool execution and scan pipeline
• 076b5e7 fix: break import cycle by moving passive scanner registration to its own package
• b6b6a9d feat: config fallback 改为 -c > 当前目录 > 二进制目录
• c0947dc chore: add AGPL-3.0 license, update README license section
• e0ed15b art: redesign logo — chain radar with brand red palette