[2.9.0] Rename plugin to compound-engineering

BREAKING: Plugin renamed from compounding-engineering to compound-engineering.
Users will need to reinstall with the new name:

  claude /plugin install compound-engineering

Changes:
- Renamed plugin directory and all references
- Updated documentation counts (24 agents, 19 commands)
- Added julik-frontend-races-reviewer to docs

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

Co-Authored-By: Claude <noreply@anthropic.com>

plugins/compound-engineering/skills/andrew-kane-gem-writer/references/module-organization.md

@@ -0,0 +1,121 @@
+# Module Organization Patterns
+
+## Simple Gem Layout
+
+```
+lib/
+├── gemname.rb          # Entry point, config, errors
+└── gemname/
+    ├── helper.rb       # Core functionality
+    ├── engine.rb       # Rails engine (if needed)
+    └── version.rb      # VERSION constant only
+```
+
+## Complex Gem Layout (PgHero pattern)
+
+```
+lib/
+├── pghero.rb
+└── pghero/
+    ├── database.rb     # Main class
+    ├── engine.rb       # Rails engine
+    └── methods/        # Functional decomposition
+        ├── basic.rb
+        ├── connections.rb
+        ├── indexes.rb
+        ├── queries.rb
+        └── replication.rb
+```
+
+## Method Decomposition Pattern
+
+Break large classes into includable modules by feature:
+
+```ruby
+# lib/pghero/database.rb
+module PgHero
+  class Database
+    include Methods::Basic
+    include Methods::Connections
+    include Methods::Indexes
+    include Methods::Queries
+  end
+end
+
+# lib/pghero/methods/indexes.rb
+module PgHero
+  module Methods
+    module Indexes
+      def index_hit_rate
+        # implementation
+      end
+
+      def unused_indexes
+        # implementation
+      end
+    end
+  end
+end
+```
+
+## Version File Pattern
+
+Keep version.rb minimal:
+
+```ruby
+# lib/gemname/version.rb
+module GemName
+  VERSION = "2.0.0"
+end
+```
+
+## Require Order in Entry Point
+
+```ruby
+# lib/searchkick.rb
+
+# 1. Standard library
+require "forwardable"
+require "json"
+
+# 2. External dependencies (minimal)
+require "active_support"
+
+# 3. Internal files via require_relative
+require_relative "searchkick/index"
+require_relative "searchkick/model"
+require_relative "searchkick/query"
+require_relative "searchkick/version"
+
+# 4. Conditional Rails loading (LAST)
+require_relative "searchkick/railtie" if defined?(Rails)
+```
+
+## Autoload vs Require
+
+Kane uses explicit `require_relative`, not autoload:
+
+```ruby
+# CORRECT
+require_relative "gemname/model"
+require_relative "gemname/query"
+
+# AVOID
+autoload :Model, "gemname/model"
+autoload :Query, "gemname/query"
+```
+
+## Comments Style
+
+Minimal section headers only:
+
+```ruby
+# dependencies
+require "active_support"
+
+# adapters
+require_relative "adapters/postgresql_adapter"
+
+# modules
+require_relative "migration"
+```