• Update repository URL in package metadata.

Initial release.

• BorderBeam widget that wraps any child with an animated border beam effect, rendered with a single CustomPainter (no extra widgets in the tree, no clipping of the child).
• Four effect types:
  • BorderBeamType.full — traveling beam around the full border.
  • BorderBeamType.compact — compact beam for small, button-sized elements.
  • BorderBeamType.line — bottom-only traveling glow with breathe and spike accents.
  • BorderBeamType.pulseInner — breathing glow contained within the border.
• Four built-in color palettes (colorful, mono, ocean, sunset) plus fully custom palettes through BorderBeamColorVariant.custom and customColors.
• Dark, light, and automatic theme adaptation.
• strength, duration, active (with smooth fade in/out), and borderRadius options.