Code review actions: rename version file, drop Gemfile conditional, tighten gemspec, switch URLs to GitHub

Three tightly-coupled cleanups from the Tobi+Sandi review:

1. Rename lib/opencode/rails/version.rb -> lib/opencode/rails_version.rb
   (Sandi S1: file path was lying about its contents — the file defines
   Opencode::RAILS_VERSION, NOT Opencode::Rails::VERSION). Updated the
   require_relative in opencode-rails.gemspec and lib/opencode-rails.rb
   to match. Removed the now-empty lib/opencode/rails/ directory.

2. Drop the 'if File.exist?(...) gem opencode-ruby, path: ...' Gemfile
   conditional (Tobi T2 / Sandi S4: Bundler behavior must not depend on
   filesystem state). The dev-time sibling-repo override is now
   documented in CONTRIBUTING.md as the standard 'bundle config
   local.opencode-ruby <path>' pattern, which is what Bundler ships
   for this use case.

3. Tighten opencode-ruby runtime dep from '~> 0.0.1.alpha1' to
   '= 0.0.1.alpha1' (Tobi T1: ~> during alpha is aspirational; pin
   exactly until the public API stabilizes).

Same commit also switches all forward-looking URLs (gemspec homepage,
metadata, README link to opencode-ruby) from Gitea to GitHub since the
gems will eventually publish there. Functional 'git:' URL in
ajent-rails' Gemfile stays on Gitea — that's where the gems actually
are right now; ajent-rails Gemfile flips to GitHub when the user does
the actual remote setup.

Test assertion in loading_test was tightened to match either an
installed-gem path ('gems/opencode-X-VERSION/') or a sibling-repo
checkout ('/opencode-X/'), via a small GEM_PATH_PATTERN helper.

15 tests, 50 assertions, 0 failures.

CONTRIBUTING.md

@@ -0,0 +1,71 @@
+# Contributing to opencode-rails
+
+## Running the test suite
+
+```bash
+bundle install
+bundle exec rake test
+```
+
+The smoke tests live in `test/opencode/`. They prove that:
+
+- Every gem-provided constant resolves
+- The opencode-ruby umbrella loads transitively
+- Source locations point at the right gem
+- The version constant is not under an `Opencode::Rails` module
+  (that would shadow `::Rails` in host apps; see comment in
+  `lib/opencode/rails_version.rb`)
+- Public API contracts on the AR-coupled classes hold (Session, Turn,
+  MessageArtifacts) — verified via `Method#parameters`, not behavior
+- Value objects (Artifact, SandboxFile, Transform, Impostor) round-trip
+  through their public interfaces
+
+Behavioral tests for AR + ActiveStorage paths live in the host app
+that originally produced this code (`ajaynomics/ajent-rails`'s
+`test/lib/opencode/rails/`). Same pattern as opencode-ruby.
+
+## Working on opencode-rails together with opencode-ruby
+
+opencode-rails depends on opencode-ruby. During development of either
+gem you frequently need changes in opencode-ruby to be picked up by
+opencode-rails without going through a release cycle.
+
+**Use Bundler's `local` config — not Gemfile conditionals.** Bundler
+behavior must never depend on filesystem state inside the Gemfile.
+
+```bash
+# Once per dev machine. Replace the path with wherever you have
+# opencode-ruby checked out.
+bundle config local.opencode-ruby /path/to/opencode-ruby
+
+# Then bundle install/update against the local copy:
+bundle install
+```
+
+To switch back to the released version:
+
+```bash
+bundle config --delete local.opencode-ruby
+bundle install
+```
+
+See [Bundler's documentation on local git overrides](https://bundler.io/v2.5/git.html#local).
+
+## Releasing
+
+This gem is in alpha. Versions ship as `0.0.x.alphaN` until the public
+API stabilizes.
+
+Coordinated releases with opencode-ruby:
+
+1. In opencode-ruby: bump `Opencode::VERSION`, tag, push.
+2. In opencode-rails: bump `Opencode::RAILS_VERSION`, update the
+   `add_runtime_dependency "opencode-ruby", "= X.Y.Z"` line in the
+   gemspec to match the new opencode-ruby version (alpha discipline:
+   pin exactly, not pessimistically). Tag, push.
+3. In any consumer (e.g., ajent-rails): bump both `tag:` lines in the
+   Gemfile to the new versions; `bundle update opencode-ruby opencode-rails`.
+
+## Reporting issues
+
+File at <https://github.com/ajaynomics/opencode-rails/issues>.

Gemfile

@@ -1,11 +1,3 @@
 source "https://rubygems.org"
 
-# opencode-ruby is the underlying wire client. During alpha both gems
-# evolve in lockstep; the gemspec pins a release version, but for local
-# dev we pull from the sibling working copy so changes in opencode-ruby
-# are picked up without a release cycle.
-if File.exist?(File.expand_path("../opencode-ruby", __dir__))
-  gem "opencode-ruby", path: File.expand_path("../opencode-ruby", __dir__)
-end
-
 gemspec

README.md

@@ -1,6 +1,6 @@
 # opencode-rails
 
-Production-grade [OpenCode](https://opencode.ai) integration for Rails apps. Layers an ActiveRecord-aware session lifecycle, a turn orchestrator, an artifact pipeline, and a sandbox model on top of the wire-level client in [`opencode-ruby`](https://gitea.krishnan.ca/ajaynomics/opencode-ruby).
+Production-grade [OpenCode](https://opencode.ai) integration for Rails apps. Layers an ActiveRecord-aware session lifecycle, a turn orchestrator, an artifact pipeline, and a sandbox model on top of the wire-level client in [`opencode-ruby`](https://github.com/ajaynomics/opencode-ruby).
 
 > **Alpha software.** API will change before 1.0. Pin to a specific version.
 

lib/opencode-rails.rb

@@ -17,7 +17,7 @@ require "active_support/core_ext/string/inflections" # demodulize, underscore, c
 require "active_support/core_ext/string/filters"     # squish, truncate
 require "active_support/core_ext/numeric/time"       # 2.seconds, 5.minutes, etc.
 
-require_relative "opencode/rails/version"
+require_relative "opencode/rails_version"
 require_relative "opencode/error_reporter"
 
 # Tier 4 leaves (no deps on other rails-gem files)

opencode-rails.gemspec

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-require_relative "lib/opencode/rails/version"
+require_relative "lib/opencode/rails_version"
 
 Gem::Specification.new do |spec|
   spec.name          = "opencode-rails"
@@ -19,22 +19,25 @@ Gem::Specification.new do |spec|
     production-grade OpenCode streaming without rolling your own
     boilerplate.
   DESC
-  spec.homepage      = "https://gitea.krishnan.ca/ajaynomics/opencode-rails"
+  spec.homepage      = "https://github.com/ajaynomics/opencode-rails"
   spec.license       = "MIT"
   spec.required_ruby_version = ">= 3.2.0"
 
+  spec.metadata["homepage_uri"]    = spec.homepage
   spec.metadata["source_code_uri"] = spec.homepage
-  spec.metadata["changelog_uri"]   = "#{spec.homepage}/src/branch/main/CHANGELOG.md"
+  spec.metadata["changelog_uri"]   = "#{spec.homepage}/blob/main/CHANGELOG.md"
   spec.metadata["bug_tracker_uri"] = "#{spec.homepage}/issues"
 
   spec.files = Dir.glob("lib/**/*.rb") +
+               Dir.glob("examples/**/*.rb") +
                %w[README.md LICENSE CHANGELOG.md opencode-rails.gemspec]
   spec.require_paths = ["lib"]
 
   # The opencode-ruby gem provides the wire-level Client + Reply primitives
-  # this gem builds on. Versions are kept in lockstep during the alpha
-  # phase; will relax to a looser pessimistic pin once both gems stabilize.
-  spec.add_runtime_dependency "opencode-ruby", "~> 0.0.1.alpha1"
+  # this gem builds on. During alpha both gems evolve in lockstep — we pin
+  # exactly (= not ~>) so that consumers always pick the version this gem
+  # was tested against. Bump to alpha2 when the paired release ships.
+  spec.add_runtime_dependency "opencode-ruby", "= 0.0.1.alpha1"
 
   # Rails sub-libraries used at runtime. Depending on these individually
   # (instead of the `rails` umbrella) avoids forcing host apps to load

test/opencode/loading_test.rb

@@ -36,16 +36,24 @@ class Opencode::LoadingTest < Minitest::Test
     end
   end
 
+  # We check via path match on both directory ("/opencode-rails/") and
+  # installed-gem name ("/opencode-rails-VERSION/") so the assertion is
+  # robust to either a sibling-repo dev setup or a bundle-resolved gem
+  # install.
+  GEM_PATH_PATTERN = ->(name) { %r{/#{Regexp.escape(name)}[-/]} }
+
   def test_session_constant_points_at_this_gem
     location = Opencode::Session.instance_method(:initialize).source_location.first
-    assert_match %r{/opencode-rails/}, location,
+    assert_match GEM_PATH_PATTERN.call("opencode-rails"), location,
       "Expected Opencode::Session to be loaded from opencode-rails, got: #{location}"
   end
 
   def test_client_constant_points_at_opencode_ruby
     location = Opencode::Client.instance_method(:initialize).source_location.first
-    assert_match %r{/opencode-ruby/}, location,
+    assert_match GEM_PATH_PATTERN.call("opencode-ruby"), location,
       "Expected Opencode::Client to come from opencode-ruby, got: #{location}"
+    refute_match GEM_PATH_PATTERN.call("opencode-rails"), location,
+      "Opencode::Client must NOT come from opencode-rails (it's an opencode-ruby class)"
   end
 
   def test_version_constant