Fix native extension loading for versioned Ruby directories

[twokidsCarl]

Problem

The precompiled gem ships native .bundle files under versioned subdirectories:

lib/bubblezone/3.2/bubblezone.bundle
lib/bubblezone/3.3/bubblezone.bundle
lib/bubblezone/3.4/bubblezone.bundle
lib/bubblezone/4.0/bubblezone.bundle

But lib/bubblezone.rb uses:

require_relative "bubblezone/bubblezone"

This only resolves to lib/bubblezone/bubblezone.bundle (which doesn't exist), causing a LoadError on all Ruby versions.

Fix

Try the versioned path first, fall back to the unversioned path:

begin
  major, minor, = RUBY_VERSION.split(".")
  require_relative "bubblezone/#{major}.#{minor}/bubblezone"
rescue LoadError
  require_relative "bubblezone/bubblezone"
end

This matches the approach already used by bubbletea-ruby.

Test plan

• Verified on Ruby 4.0.0 (arm64-darwin): require "bubblezone" now succeeds
• Fallback path preserved for non-versioned layouts

🤖 Generated with Claude Code