Add lax and YJIT liquid-spec adapters

- ruby_liquid_lax.rb: Tests lax parsing mode with :lax_parsing feature
- ruby_liquid_yjit.rb: Tests YJIT + strict mode + ActiveSupport

Matrix results: 4483 matched, 18 different (lax edge cases), 61 skipped

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

spec/ruby_liquid_lax.rb

@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+# Liquid Spec Adapter for Shopify/liquid with lax parsing mode
+#
+# Run with: bundle exec liquid-spec run spec/ruby_liquid_lax.rb
+
+$LOAD_PATH.unshift(File.expand_path('../lib', __dir__))
+require 'liquid'
+
+LiquidSpec.configure do |config|
+  config.features = [:core, :lax_parsing]
+end
+
+# Compile a template string into a Liquid::Template
+LiquidSpec.compile do |ctx, source, options|
+  # Force lax mode
+  options = options.merge(error_mode: :lax)
+  Liquid::Template.parse(source, **options)
+end
+
+# Render a compiled template with the given context
+LiquidSpec.render do |ctx, template, assigns, options|
+  registers = Liquid::Registers.new(options[:registers] || {})
+
+  context = Liquid::Context.build(
+    static_environments: assigns,
+    registers: registers,
+    rethrow_errors: options[:strict_errors],
+  )
+
+  context.exception_renderer = options[:exception_renderer] if options[:exception_renderer]
+
+  template.render(context)
+end

spec/ruby_liquid_yjit.rb

@@ -0,0 +1,41 @@
+# frozen_string_literal: true
+
+# Liquid Spec Adapter for Shopify/liquid with YJIT + strict mode + ActiveSupport
+#
+# Run with: bundle exec liquid-spec run spec/ruby_liquid_yjit.rb
+
+$LOAD_PATH.unshift(File.expand_path('../lib', __dir__))
+
+# Enable YJIT if available
+if defined?(RubyVM::YJIT) && RubyVM::YJIT.respond_to?(:enable)
+  RubyVM::YJIT.enable
+end
+
+require 'active_support/all'
+require 'liquid'
+
+LiquidSpec.configure do |config|
+  config.features = [:core, :activesupport]
+end
+
+# Compile a template string into a Liquid::Template
+LiquidSpec.compile do |ctx, source, options|
+  # Force strict mode
+  options = { error_mode: :strict }.merge(options)
+  Liquid::Template.parse(source, **options)
+end
+
+# Render a compiled template with the given context
+LiquidSpec.render do |ctx, template, assigns, options|
+  registers = Liquid::Registers.new(options[:registers] || {})
+
+  context = Liquid::Context.build(
+    static_environments: assigns,
+    registers: registers,
+    rethrow_errors: options[:strict_errors],
+  )
+
+  context.exception_renderer = options[:exception_renderer] if options[:exception_renderer]
+
+  template.render(context)
+end