[tannevaled]

Layers the pure-Go rails meta-gem (github.com/go-ruby-rails/rails, pinned at 5ddb406) onto the railties binding already merged (Wave 1). The rails gem ships almost no code of its own; it ties the framework components together and vends the top-level Rails module. This binding extends the Rails module registerRailties() created — it does not recreate it or re-register the "rails" feature.

Ruby surface added

• Top-level Rails.* singleton accessors: application / application=, env / env=, root, public_path, configuration, autoloaders, logger / logger=, cache / cache=, groups, version / gem_version, backtrace_cleaner, error.
• Rails::VERSION module (STRING/MAJOR/MINOR/TINY/PRE; targets 8.1.3).
• Rails::EnvironmentInquirer (< Rails::StringInquirer): the Rails.env type, with the dynamic name? predicate and the environment-specific local? (development/test).
• require "rails/all": added to providedFeatures and wired as a feature hook that triggers a require of every shipped (Available) catalog component whose feature the VM already provides (active_support/active_model/active_job/active_storage/action_cable; components without a provided feature yet are skipped, so the aggregate tracks the catalog as bindings land).

How railties is extended, not duplicated

registerRails() runs immediately after registerRailties() and grabs the existing Rails module (vm.consts["Rails"].(*RClass)), adding the singleton methods, Rails::VERSION and Rails::EnvironmentInquirer onto it. The Railtie/Engine/Application/StringInquirer classes and the "rails"/"rails/railtie"/… features stay owned by railties.

App-seam wiring

Application state (root/public_path/configuration/autoloaders/cache) delegates to the meta-gem, which resolves it against the bound railties Application through its App interface — bridged here by railsAppAdapter (Root/Config/Autoloaders/PublicPath/Cache). Rails.application= records the Ruby wrapper on the VM and threads the underlying railties *Application into rails.SetApplication; Rails.application returns the Ruby *RailsAppVal Ruby set. RailsEnvVal is added to classOf and to hasCustomEq so Rails.env == "production" dispatches the wrapper's == rather than pointer identity.

Verification (all exit 0)

• go build ./internal/vm/ — OK; orphan scan clean.
• 100% coverage of the new files (rails_meta.go, rails_meta_bind.go) via -covermode=count.
• Full suites go test ./internal/vm/ ./internal/object/ -count=1 — both ok (railties tests still green).
• gofmt -l empty; go vet ./internal/vm/ clean.
• 6-arch GOOS=linux GOARCH={amd64,arm64,riscv64,loong64,ppc64le,s390x} — all build.

🤖 Generated with Claude Code

[tannevaled]

Superseded by the wave-2 consolidation PR (single merge onto main; shared builtins/require/object_model/vm/arith/digest_bind). Work preserved verbatim; branch kept for reference.