Address additional RBS review suggestions

Minor improvements:
- Fix env vars concatenation for robustness with complex variables
- Document Configuration RBS signature in test (sig/react_on_rails/configuration.rbs:4)
- Add timeout (60s) to Open3.capture3 commands to prevent hung processes in CI
- Document why Pro package omits Steep tasks (doesn't use Steep type checker)

Files modified:
- rakelib/run_rspec.rake: Improve env vars handling for DISABLE_TURBOLINKS
- rakelib/rbs.rake: Add timeout parameter to Open3.capture3 calls
- react_on_rails_pro/rakelib/rbs.rake: Add comment explaining Steep omission + timeout
- spec/react_on_rails/rbs_runtime_checking_spec.rb: Document RBS signature location

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

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

Author: justin808

rakelib/rbs.rake

@@ -15,7 +15,8 @@ namespace :rbs do
     # This allows us to distinguish between actual validation errors and warnings
     # Note: Must use bundle exec even though rake runs in bundle context because
     # spawned shell commands via Open3.capture3() do NOT inherit bundle context
-    stdout, stderr, status = Open3.capture3("bundle exec rbs -I sig validate")
+    # Timeout after 60 seconds to prevent hung processes in CI environments
+    stdout, stderr, status = Open3.capture3("bundle exec rbs -I sig validate", timeout: 60)
 
     if status.success?
       puts "✓ RBS validation passed"
@@ -45,7 +46,8 @@ namespace :rbs do
     # Use Open3 for better error handling
     # Note: Must use bundle exec even though rake runs in bundle context because
     # spawned shell commands via Open3.capture3() do NOT inherit bundle context
-    stdout, stderr, status = Open3.capture3("bundle exec steep check")
+    # Timeout after 60 seconds to prevent hung processes in CI environments
+    stdout, stderr, status = Open3.capture3("bundle exec steep check", timeout: 60)
 
     if status.success?
       puts "✓ Steep type checking passed"

rakelib/run_rspec.rake

@@ -66,7 +66,11 @@ namespace :run_rspec do
 
   desc "Runs dummy rspec without turbolinks"
   task dummy_no_turbolinks: ["dummy_apps:dummy_app"] do
-    env_vars = [rbs_runtime_env_vars, "DISABLE_TURBOLINKS=TRUE"].reject(&:empty?).join(" ")
+    # Build env vars array for robustness with complex environment variables
+    env_vars_array = []
+    env_vars_array << rbs_runtime_env_vars unless rbs_runtime_env_vars.empty?
+    env_vars_array << "DISABLE_TURBOLINKS=TRUE"
+    env_vars = env_vars_array.join(" ")
     run_tests_in(spec_dummy_dir,
                  env_vars: env_vars,
                  command_name: "dummy_no_turbolinks")

react_on_rails_pro/rakelib/rbs.rake

@@ -2,6 +2,8 @@
 
 require "open3"
 
+# NOTE: Pro package does not include Steep tasks (:steep, :all) as it does not
+# use Steep type checker. Only RBS validation is performed.
 namespace :rbs do
   desc "Validate RBS type signatures"
   task :validate do

spec/react_on_rails/rbs_runtime_checking_spec.rb

@@ -15,6 +15,8 @@
     it "catches invalid type assignments to configuration" do
       # This test verifies runtime checking actually works by intentionally
       # violating a type signature and expecting RBS to catch it
+      # Type signature: sig/react_on_rails/configuration.rbs:4
+      # attr_accessor server_bundle_js_file: String
       expect do
         config = ReactOnRails::Configuration.new(
           server_bundle_js_file: 123 # Invalid: should be String, not Integer