0.2.1: ci: Extract Adwaita with Windows native tar

CI/packaging release.

• macOS: long-form aps-environment added for Release.
• Windows: Adwaita icon theme bundled; app icon and gio modules
  staged in the MSI; Adwaita extracted with native tar.
• Snap moved to core24 with the gnome extension, then restored to
  core26 base.
• Bundled Radare2.framework sanitized.
• Release uploads filtered to product packages; tagged release
  publishes and bumps the website.
• Runner disk space freed before flatpak build.
• Entitlement keys read via PlistBuddy.