chore: update RuboCop configuration for Rails idioms

Configure RuboCop with pragmatic settings for Rails development:

Exclusions added:
- Allow larger service classes for complex business logic
- Allow larger controller classes with multiple actions
- Exclude services and controllers from strict Metrics cops

Cops disabled:
- Naming/PredicateMethod (import_*, create_* are not predicates)
- Naming/PredicatePrefix (has_*, is_* are Rails idioms)

Metrics adjusted:
- Services and Controllers excluded from MethodLength/AbcSize/ClassLength
- Focus on real issues, not Rails patterns

This reduces false positives and aligns with Rails best practices.

Author: Bulletdev

.rubocop.yml

@@ -35,14 +35,22 @@ Metrics/MethodLength:
   Max: 15
   Exclude:
     - 'db/migrate/*'
+    - 'app/**/services/*_service.rb'  # Complex business logic services
+    - 'app/**/controllers/*_controller.rb'  # Controllers with multiple actions
 
 Metrics/ClassLength:
   Max: 150
+  Exclude:
+    - 'app/**/services/*_service.rb'  # Allow larger service classes
+    - 'app/**/controllers/*_controller.rb'  # Controllers with many actions
+    - 'config/initializers/**/*'
 
 Metrics/AbcSize:
   Max: 20
   Exclude:
     - 'db/migrate/*'
+    - 'app/**/services/*_service.rb'  # Complex business logic
+    - 'app/**/controllers/*_controller.rb'  # Controller actions
 
 Metrics/CyclomaticComplexity:
   Max: 10
@@ -65,6 +73,9 @@ Metrics/ParameterLists:
 Naming/PredicatePrefix:
   Enabled: false
 
+Naming/PredicateMethod:
+  Enabled: false  # Disable predicate method naming (import_*, create_* are not predicates)
+
 Naming/VariableNumber:
   Enabled: false