Fix Rails rake tasks with clean namespacing

- Added rake_tasks block so tasks appear in Rails apps
- Namespaced under ruby_llm: to avoid conflicts
- Cleared original task names in Rails to prevent pollution
- Gem development keeps clean names, Rails gets namespaced

Closes #136

Author: crmne

lib/ruby_llm/railtie.rb

@@ -8,5 +8,25 @@ class Railtie < Rails::Railtie
         include RubyLLM::ActiveRecord::ActsAs
       end
     end
+
+    rake_tasks do
+      # Load original tasks
+      path = File.expand_path(__dir__)
+      Dir.glob("#{path}/../tasks/**/*.rake").each { |f| load f }
+
+      # Create namespaced aliases for Rails apps
+      namespace :ruby_llm do
+        task 'aliases:generate' => 'aliases:generate'
+        task 'models:update' => 'models:update'
+        task 'models:docs' => 'models:docs'
+        task 'release:verify_cassettes' => 'release:verify_cassettes'
+        task 'vcr:record' => 'vcr:record'
+      end
+
+      # Remove original tasks to avoid namespace pollution in Rails apps
+      %w[aliases:generate models:update models:docs release:verify_cassettes vcr:record].each do |task_name|
+        Rake::Task[task_name].clear if Rake::Task.task_defined?(task_name)
+      end
+    end
   end
 end