RambleDesk v0.0.2

Windows and Apple Silicon macOS release. Windows updater artifacts are signed; Windows Authenticode and Apple notarization are not yet enabled. See the README for platform-specific first-launch instructions.

What's Changed

• feat: support file attachments (markdown / office / pdf) by @l1veIn in #7
• refactor: host knowledge registry as single source of truth by @l1veIn in #8
• Mac 权限引导与图标修正 by @l1veIn in #9

Full Changelog: v0.0.1...v0.0.2