Cuprite 1.0

[route]

Capybara Compliance

• Review and address all skipped Capybara specs in spec/spec_helper.rb
• Implement missing Capybara-required features
• Ensure all Capybara specs pass

API Cleanup

• Remove Poltergeist compatibility layer
• Remove deprecated/inconvenient features
• Refactor and modernize public API

Ferrum Integration

• Refactor to use Ferrum's public API exclusively
• Remove monkey-patches
• Ensure clean separation between Cuprite and Ferrum

Documentation & Release

• Add RBS types
• Add YARD docs
• Update documentation for new API
• Update CHANGELOG
• Coordinate Ferrum 1.0 release
• Release Cuprite 1.0
• Lock API for stable 1.x releases