Fix linting issues and exclude templates from ESLint

- Add templates directory to ESLint global ignores
- Fix RuboCop style violations with autofix
- Ensure all linting passes before PR creation

Author: justin808

eslint.config.ts

@@ -44,6 +44,8 @@ const config = tsEslint.config([
     // fixtures
     '**/fixtures/',
     '**/.yalc/**/*',
+    // generator templates
+    '**/templates/**/*',
   ]),
   {
     files: ['**/*.[jt]s', '**/*.[jt]sx', '**/*.[cm][jt]s'],

lib/generators/react_on_rails/install_generator.rb

@@ -327,15 +327,15 @@ def install_typescript_dependencies
         ]
 
         install_command = case package_manager
-                         when "npm"
-                           "npm install --save-dev #{typescript_packages.join(' ')}"
-                         when "yarn"
-                           "yarn add --dev #{typescript_packages.join(' ')}"
-                         when "pnpm"
-                           "pnpm add --save-dev #{typescript_packages.join(' ')}"
-                         when "bun"
-                           "bun add --dev #{typescript_packages.join(' ')}"
-                         end
+                          when "npm"
+                            "npm install --save-dev #{typescript_packages.join(' ')}"
+                          when "yarn"
+                            "yarn add --dev #{typescript_packages.join(' ')}"
+                          when "pnpm"
+                            "pnpm add --save-dev #{typescript_packages.join(' ')}"
+                          when "bun"
+                            "bun add --dev #{typescript_packages.join(' ')}"
+                          end
 
         success = system(install_command)
         unless success
@@ -405,30 +405,30 @@ def configure_babel_for_typescript
         babel_typescript_package = "@babel/preset-typescript"
 
         install_command = case package_manager
-                         when "npm"
-                           "npm install --save-dev #{babel_typescript_package}"
-                         when "yarn"
-                           "yarn add --dev #{babel_typescript_package}"
-                         when "pnpm"
-                           "pnpm add --save-dev #{babel_typescript_package}"
-                         when "bun"
-                           "bun add --dev #{babel_typescript_package}"
-                         end
+                          when "npm"
+                            "npm install --save-dev #{babel_typescript_package}"
+                          when "yarn"
+                            "yarn add --dev #{babel_typescript_package}"
+                          when "pnpm"
+                            "pnpm add --save-dev #{babel_typescript_package}"
+                          when "bun"
+                            "bun add --dev #{babel_typescript_package}"
+                          end
 
         puts Rainbow("📝 Installing Babel TypeScript preset...").yellow
         success = system(install_command)
-        unless success
-          warning = <<~MSG.strip
-            ⚠️  Failed to install Babel TypeScript preset automatically.
+        return if success
 
-            Please run manually:
-                #{install_command}
+        warning = <<~MSG.strip
+          ⚠️  Failed to install Babel TypeScript preset automatically.
 
-            TypeScript compilation may not work without this preset.
-          MSG
-          GeneratorMessages.add_warning(warning)
-          return
-        end
+          Please run manually:
+              #{install_command}
+
+          TypeScript compilation may not work without this preset.
+        MSG
+        GeneratorMessages.add_warning(warning)
+        nil
       end
 
       # Removed: Shakapacker auto-installation logic (now explicit dependency)