diff --git a/Gemfile b/Gemfile
index c4baf61..bd7efe1 100755
--- a/Gemfile
+++ b/Gemfile
@@ -271,4 +271,4 @@ group :development, :test do
   gem 'spring-watcher-listen'
 end
 
-gem "rqrcode", "~> 3.2"
+gem 'rqrcode', '~> 3.2'
diff --git a/app/builders/messages/message_builder.rb b/app/builders/messages/message_builder.rb
index 87c3a7b..1e689f0 100755
--- a/app/builders/messages/message_builder.rb
+++ b/app/builders/messages/message_builder.rb
@@ -51,16 +51,14 @@ class Messages::MessageBuilder
         file: uploaded_attachment
       )
 
-      attachment.file_type = if uploaded_attachment.is_a?(String)
-                               file_type_by_signed_id(
-                                 uploaded_attachment
-                               )
-                             else
-                               file_type(uploaded_attachment&.content_type)
-                             end
+      attachment.file_type = resolve_file_type(uploaded_attachment)
     end
   end
 
+  def resolve_file_type(attachment)
+    attachment.is_a?(String) ? file_type_by_signed_id(attachment) : file_type(attachment&.content_type)
+  end
+
   def process_emails
     return unless @conversation.inbox&.inbox_type == 'Email'
 
@@ -222,11 +220,18 @@ class Messages::MessageBuilder
     @private = @params[:private] || false
     @message_type = @params[:message_type] || 'outgoing'
     @attachments = @params[:attachments]
-    @automation_rule = content_attributes&.dig(:automation_rule_id)
-    # Try to find in_reply_to in params (top level) or content_attributes
-    @in_reply_to = @params[:in_reply_to_id] || @params[:in_reply_to] || content_attributes&.dig(:in_reply_to)
+    @automation_rule = extract_automation_rule
+    @in_reply_to = extract_in_reply_to
     @items = content_attributes&.dig(:items)
   end
+
+  def extract_automation_rule
+    content_attributes&.dig(:automation_rule_id)
+  end
+
+  def extract_in_reply_to
+    @params[:in_reply_to_id] || @params[:in_reply_to] || content_attributes&.dig(:in_reply_to)
+  end
 end
 
 Messages::MessageBuilder.prepend_mod_with('Messages::MessageBuilder')
diff --git a/app/controllers/api/v1/accounts/frequent_questions_controller.rb b/app/controllers/api/v1/accounts/frequent_questions_controller.rb
index eb8efe2..863af81 100644
--- a/app/controllers/api/v1/accounts/frequent_questions_controller.rb
+++ b/app/controllers/api/v1/accounts/frequent_questions_controller.rb
@@ -1,11 +1,5 @@
-module Api
-  module V1
-    module Accounts
-      class FrequentQuestionsController < Api::V1::Accounts::BaseController
-        def index
-          @frequent_questions = Current.account.frequent_questions.order(occurrence_count: :desc).limit(50)
-        end
-      end
-    end
+class Api::V1::Accounts::FrequentQuestionsController < Api::V1::Accounts::BaseController
+  def index
+    @frequent_questions = Current.account.frequent_questions.order(occurrence_count: :desc).limit(50)
   end
 end
diff --git a/app/controllers/api/v1/accounts/inboxes/jasmine/collections_controller.rb b/app/controllers/api/v1/accounts/inboxes/jasmine/collections_controller.rb
index 5ee297f..a9120e5 100644
--- a/app/controllers/api/v1/accounts/inboxes/jasmine/collections_controller.rb
+++ b/app/controllers/api/v1/accounts/inboxes/jasmine/collections_controller.rb
@@ -1,43 +1,33 @@
-module Api
-  module V1
-    module Accounts
-      module Inboxes
-        module Jasmine
-          class CollectionsController < Api::V1::Accounts::BaseController
-            before_action :fetch_inbox
+class Api::V1::Accounts::Inboxes::Jasmine::CollectionsController < Api::V1::Accounts::BaseController
+  before_action :fetch_inbox
 
-            def index
-              # Returns collections linked to this inbox
-              collection_ids = @inbox.inbox_collections.pluck(:collection_id)
-              @collections = Current.account.jasmine_collections.where(id: collection_ids)
-              render json: @collections
-            end
+  def index
+    # Returns collections linked to this inbox
+    collection_ids = @inbox.inbox_collections.pluck(:collection_id)
+    @collections = Current.account.jasmine_collections.where(id: collection_ids)
+    render json: @collections
+  end
 
-            def create
-              # Link an existing collection to this inbox
-              collection = Current.account.jasmine_collections.find(params[:collection_id])
-              link = @inbox.inbox_collections.create!(
-                collection: collection,
-                priority: params[:priority] || 0
-              )
-              render json: link
-            end
+  def create
+    # Link an existing collection to this inbox
+    collection = Current.account.jasmine_collections.find(params[:collection_id])
+    link = @inbox.inbox_collections.create!(
+      collection: collection,
+      priority: params[:priority] || 0
+    )
+    render json: link
+  end
 
-            def destroy
-              # Unlink a collection from this inbox
-              link = @inbox.inbox_collections.find_by!(collection_id: params[:id])
-              link.destroy!
-              head :no_content
-            end
+  def destroy
+    # Unlink a collection from this inbox
+    link = @inbox.inbox_collections.find_by!(collection_id: params[:id])
+    link.destroy!
+    head :no_content
+  end
 
-            private
+  private
 
-            def fetch_inbox
-              @inbox = Current.account.inboxes.find(params[:inbox_id])
-            end
-          end
-        end
-      end
-    end
+  def fetch_inbox
+    @inbox = Current.account.inboxes.find(params[:inbox_id])
   end
 end
diff --git a/app/controllers/api/v1/accounts/inboxes/jasmine/configs_controller.rb b/app/controllers/api/v1/accounts/inboxes/jasmine/configs_controller.rb
index dd83f06..5b400a3 100644
--- a/app/controllers/api/v1/accounts/inboxes/jasmine/configs_controller.rb
+++ b/app/controllers/api/v1/accounts/inboxes/jasmine/configs_controller.rb
@@ -1,53 +1,43 @@
-module Api
-  module V1
-    module Accounts
-      module Inboxes
-        module Jasmine
-          class ConfigsController < Api::V1::Accounts::BaseController
-            before_action :fetch_inbox
-            before_action :fetch_or_initialize_config
+class Api::V1::Accounts::Inboxes::Jasmine::ConfigsController < Api::V1::Accounts::BaseController
+  before_action :fetch_inbox
+  before_action :fetch_or_initialize_config
 
-            def show
-              render json: @config
-            end
+  def show
+    render json: @config
+  end
 
-            def update
-              if @config.update(config_params)
-                render json: @config
-              else
-                render json: { error: @config.errors.full_messages.join(', ') }, status: :unprocessable_entity
-              end
-            end
-
-            private
-
-            def fetch_inbox
-              @inbox = Current.account.inboxes.find(params[:inbox_id])
-            end
-
-            def fetch_or_initialize_config
-              @config = ::Jasmine::InboxConfig.find_or_initialize_by(
-                account: Current.account,
-                inbox: @inbox
-              )
-            end
-
-            def config_params
-              params.permit(
-                :is_enabled,
-                :system_prompt,
-                :playbook_prompt,
-                :model,
-                :temperature,
-                :rag_distance_threshold,
-                :rag_max_results,
-                :mode,
-                intent_keywords: {}
-              )
-            end
-          end
-        end
-      end
+  def update
+    if @config.update(config_params)
+      render json: @config
+    else
+      render json: { error: @config.errors.full_messages.join(', ') }, status: :unprocessable_entity
     end
   end
+
+  private
+
+  def fetch_inbox
+    @inbox = Current.account.inboxes.find(params[:inbox_id])
+  end
+
+  def fetch_or_initialize_config
+    @config = ::Jasmine::InboxConfig.find_or_initialize_by(
+      account: Current.account,
+      inbox: @inbox
+    )
+  end
+
+  def config_params
+    params.permit(
+      :is_enabled,
+      :system_prompt,
+      :playbook_prompt,
+      :model,
+      :temperature,
+      :rag_distance_threshold,
+      :rag_max_results,
+      :mode,
+      intent_keywords: {}
+    )
+  end
 end
diff --git a/app/controllers/api/v1/accounts/inboxes/jasmine/playground_controller.rb b/app/controllers/api/v1/accounts/inboxes/jasmine/playground_controller.rb
index 1327690..a39ae73 100644
--- a/app/controllers/api/v1/accounts/inboxes/jasmine/playground_controller.rb
+++ b/app/controllers/api/v1/accounts/inboxes/jasmine/playground_controller.rb
@@ -1,85 +1,75 @@
-module Api
-  module V1
-    module Accounts
-      module Inboxes
-        module Jasmine
-          class PlaygroundController < Api::V1::Accounts::BaseController
-            before_action :fetch_inbox
-            before_action :fetch_config
+class Api::V1::Accounts::Inboxes::Jasmine::PlaygroundController < Api::V1::Accounts::BaseController
+  before_action :fetch_inbox
+  before_action :fetch_config
 
-            def test
-              message_content = params[:message]
-              
-              return render json: { error: 'Message is required' }, status: :bad_request if message_content.blank?
-              return render json: { error: 'Jasmine is not enabled for this inbox' }, status: :unprocessable_entity unless @config&.is_enabled?
+  def test
+    return render json: { error: 'Message is required' }, status: :bad_request if params[:message].blank?
+    return render json: { error: 'Jasmine is not enabled for this inbox' }, status: :unprocessable_entity unless @config&.is_enabled?
 
-              # Create a mock message object for BrainService
-              mock_message = OpenStruct.new(
-                content: message_content,
-                inbox: @inbox,
-                conversation: mock_conversation
-              )
+    begin
+      response = generate_response(params[:message])
+      render json: build_success_payload(response)
+    rescue StandardError => e
+      handle_error(e)
+    end
+  end
 
-              begin
-                response = ::Jasmine::BrainService.new(
-                  inbox: @inbox,
-                  conversation: mock_conversation,
-                  message: mock_message
-                ).respond
+  private
 
-                render json: {
-                  response: response,
-                  debug: {
-                    model: @config.model,
-                    temperature: @config.temperature,
-                    rag_threshold: @config.rag_distance_threshold
-                  }
-                }
-              rescue StandardError => e
-                Rails.logger.error "[Jasmine::Playground] Error: #{e.message}\n#{e.backtrace.first(5).join("\n")}"
-                render json: { error: e.message }, status: :internal_server_error
-              end
-            end
+  def fetch_inbox
+    @inbox = Current.account.inboxes.find(params[:inbox_id])
+  end
 
-            private
+  def fetch_config
+    @config = ::Jasmine::InboxConfig.find_by(
+      account: Current.account,
+      inbox: @inbox
+    )
+  end
 
-            def fetch_inbox
-              @inbox = Current.account.inboxes.find(params[:inbox_id])
-            end
+  def generate_response(content)
+    # Create a mock message object for BrainService
+    mock_message = OpenStruct.new(content: content, inbox: @inbox, conversation: mock_conversation)
+    ::Jasmine::BrainService.new(inbox: @inbox, conversation: mock_conversation, message: mock_message).respond
+  end
 
-            def fetch_config
-              @config = ::Jasmine::InboxConfig.find_by(
-                account: Current.account,
-                inbox: @inbox
-              )
-            end
+  def build_success_payload(response)
+    {
+      response: response,
+      debug: {
+        model: @config.model,
+        temperature: @config.temperature,
+        rag_threshold: @config.rag_distance_threshold
+      }
+    }
+  end
 
-            def mock_conversation
-              # Create a minimal mock conversation for playground testing
-              @mock_conversation ||= begin
-                mock = OpenStruct.new(
-                  id: 0,
-                  account_id: Current.account.id,
-                  inbox_id: @inbox.id,
-                  custom_attributes: { 'jasmine_state' => {} }
-                )
-                
-                # Mock messages method to return empty array that responds to query methods
-                def mock.messages
-                  []
-                end
-                
-                # Mock update! to do nothing (playground doesn't need state persistence)
-                def mock.update!(**attrs)
-                  # no-op for playground
-                end
-                
-                mock
-              end
-            end
-          end
-        end
+  def handle_error(err)
+    Rails.logger.error "[Jasmine::Playground] Error: #{err.message}\n#{err.backtrace.first(5).join("\n")}"
+    render json: { error: err.message }, status: :internal_server_error
+  end
+
+  def mock_conversation
+    # Create a minimal mock conversation for playground testing
+    @mock_conversation ||= begin
+      mock = OpenStruct.new(
+        id: 0,
+        account_id: Current.account.id,
+        inbox_id: @inbox.id,
+        custom_attributes: { 'jasmine_state' => {} }
+      )
+
+      # Mock messages method to return empty array that responds to query methods
+      def mock.messages
+        []
       end
+
+      # Mock update! to do nothing (playground doesn't need state persistence)
+      def mock.update!(**attrs)
+        # no-op for playground
+      end
+
+      mock
     end
   end
 end
diff --git a/app/controllers/api/v1/accounts/inboxes/jasmine/tools_controller.rb b/app/controllers/api/v1/accounts/inboxes/jasmine/tools_controller.rb
index 629b178..f7d9abd 100644
--- a/app/controllers/api/v1/accounts/inboxes/jasmine/tools_controller.rb
+++ b/app/controllers/api/v1/accounts/inboxes/jasmine/tools_controller.rb
@@ -1,93 +1,90 @@
-module Api
-  module V1
-    module Accounts
-      module Inboxes
-        module Jasmine
-          class ToolsController < Api::V1::Accounts::BaseController
-            before_action :fetch_inbox
+class Api::V1::Accounts::Inboxes::Jasmine::ToolsController < Api::V1::Accounts::BaseController
+  before_action :fetch_inbox
 
-          def index
-            configs = ::Jasmine::ToolConfig.where(inbox: @inbox).index_by(&:tool_key)
-            
-            tools = ::Jasmine::ToolConfig::DEFINITIONS.map do |key, definition|
-              config = configs[key]
-              {
-                key: key,
-                name: definition[:name],
-                method: definition[:method].to_s.upcase,
-                url: definition[:url],
-                description: definition[:description],
-                is_enabled: config&.is_enabled || false,
-                plug_play_id: config&.plug_play_id,
-                plug_play_token: config&.plug_play_token.present? ? '****' : nil,
-                last_test: config ? {
-                  at: config.last_tested_at,
-                  status: config.last_test_status,
-                  error: config.last_test_error,
-                  duration: config.last_test_duration_ms
-                } : nil
-              }
-            end
+  def index
+    configs = ::Jasmine::ToolConfig.where(inbox: @inbox).index_by(&:tool_key)
+    render json: serialize_tools(configs)
+  end
 
-            render json: tools
-          end
+  def update
+    return render(json: { error: 'Invalid tool key' }, status: :bad_request) unless valid_tool_key?(params[:id])
 
-          def update
-            tool_key = params[:id] # Using :id from route as tool_key
-            
-            unless ::Jasmine::ToolConfig::DEFINITIONS.key?(tool_key)
-              return render json: { error: 'Invalid tool key' }, status: :bad_request
-            end
+    config = find_config(params[:id])
+    update_config_attributes(config)
 
-            config = ::Jasmine::ToolConfig.find_or_initialize_by(
-              account: Current.account,
-              inbox: @inbox,
-              tool_key: tool_key
-            )
-
-            # Update attributes
-            config.is_enabled = params[:is_enabled]
-            config.plug_play_id = params[:plug_play_id]
-            
-            # Secure token update: only update if present and not masked/empty
-            new_token = params[:plug_play_token]
-            if new_token.present? && new_token != '****'
-              config.plug_play_token = new_token
-            end
-
-            if config.save
-              render json: { 
-                key: config.tool_key, 
-                is_enabled: config.is_enabled, 
-                plug_play_id: config.plug_play_id, 
-                plug_play_token: '****' 
-              }
-            else
-              render json: { error: config.errors.full_messages.join(', ') }, status: :unprocessable_entity
-            end
-          end
-
-          def test
-            tool_key = params[:id]
-            
-            begin
-              runner = ::Jasmine::ToolRunner.new(@inbox, tool_key)
-              result = runner.run
-              render json: result
-            rescue => e
-              Rails.logger.error "[JasmineTools] Test failed: #{e.try(:message)}"
-              render json: { success: false, error: "Server Error: #{e.try(:message)}" }, status: :internal_server_error
-            end
-          end
-
-          private
-
-          def fetch_inbox
-            @inbox = Current.account.inboxes.find(params[:inbox_id])
-          end
-        end
-      end
-      end
+    if config.save
+      render json: success_payload(config)
+    else
+      render(json: { error: config.errors.full_messages.join(', ') }, status: :unprocessable_entity)
     end
   end
+
+  def test
+    tool_key = params[:id]
+
+    begin
+      runner = ::Jasmine::ToolRunner.new(@inbox, tool_key)
+      result = runner.run
+      render json: result
+    rescue StandardError => e
+      Rails.logger.error "[JasmineTools] Test failed: #{e.try(:message)}"
+      render json: { success: false, error: "Server Error: #{e.try(:message)}" }, status: :internal_server_error
+    end
+  end
+
+  private
+
+  def fetch_inbox
+    @inbox = Current.account.inboxes.find(params[:inbox_id])
+  end
+
+  def valid_tool_key?(key)
+    ::Jasmine::ToolConfig::DEFINITIONS.key?(key)
+  end
+
+  def find_config(key)
+    ::Jasmine::ToolConfig.find_or_initialize_by(account: Current.account, inbox: @inbox, tool_key: key)
+  end
+
+  def update_config_attributes(config)
+    config.is_enabled = params[:is_enabled]
+    config.plug_play_id = params[:plug_play_id]
+    new_token = params[:plug_play_token]
+    config.plug_play_token = new_token if new_token.present? && new_token != '****'
+  end
+
+  def success_payload(config)
+    { key: config.tool_key, is_enabled: config.is_enabled, plug_play_id: config.plug_play_id, plug_play_token: '****' }
+  end
+
+  def serialize_tools(configs)
+    ::Jasmine::ToolConfig::DEFINITIONS.map do |key, definition|
+      build_tool_hash(key, definition, configs[key])
+    end
+  end
+
+  def build_tool_hash(key, definition, config)
+    {
+      key: key,
+      name: definition[:name],
+      method: definition[:method].to_s.upcase,
+      url: definition[:url],
+      description: definition[:description],
+      is_enabled: config&.is_enabled || false,
+      plug_play_id: config&.plug_play_id,
+      plug_play_token: config&.plug_play_token.present? ? '****' : nil,
+      last_test: serialize_last_test(config)
+    }
+  end
+
+  def serialize_last_test(config)
+    return unless config
+
+    {
+      at: config.last_tested_at,
+      status: config.last_test_status,
+      error: config.last_test_error,
+      duration: config.last_test_duration_ms
+    }
+  end
 end
diff --git a/progresso/2026-01-25_correcao_lint_backend.md b/progresso/2026-01-25_correcao_lint_backend.md
new file mode 100644
index 0000000..7459383
--- /dev/null
+++ b/progresso/2026-01-25_correcao_lint_backend.md
@@ -0,0 +1,47 @@
+# Correção de Lint e Refatoração Backend
+
+## Contexto
+
+Ocorreram diversos erros de Lint (RuboCop) no backend, bloqueando o CI/CD ou a qualidade do código. Os principais arquivos afetados foram `MessageBuilder` e `ToolsController`.
+
+## Ações Realizadas
+
+### 1. Refatoração `MessageBuilder` (`app/builders/messages/message_builder.rb`)
+
+- **Problema:** Classe muito longa (`Metrics/ClassLength`) e complexidade ciclomática alta.
+- **Solução:**
+  - Lógica de `file_type` extraída para método auxiliar `resolve_file_type`.
+  - Métodos `extract_automation_rule`, `extract_in_reply_to` e `should_process_liquid?` compactados (one-liners).
+  - Redução geral de linhas e complexidade.
+
+### 2. Refatoração `ToolsController` (`app/controllers/api/v1/accounts/inboxes/jasmine/tools_controller.rb`)
+
+- **Problema:** Métodos longos (`Metrics/MethodLength`) e complexos (`Metrics/AbcSize`).
+- **Solução:**
+  - Extração da validação de chave para `valid_tool_key?`.
+  - Extração da busca de config para `find_config`.
+  - Extração da atualização de atributos para `update_config_attributes`.
+  - Extração da serialização de resposta para `success_payload`, `build_tool_hash` e `serialize_last_test`.
+  - Correção de `Style/EmptyElse`.
+
+### 3. Correções Gerais
+
+- **Specs (`whatsapp_spec.rb`, `contact_spec.rb`):** Quebra de comentários longos para satisfazer `Layout/LineLength`.
+- **StringLiterals:** Padronização para aspas simples.
+- **ClassAndModuleChildren:** Formato compacto adotado onde necessário.
+
+## Validação
+
+- **RuboCop:** 0 ofensas.
+- **RSpec:** 0 falhas nos testes unitários das classes afetadas.
+
+## Como Reverter
+
+Checkouts nos arquivos originais:
+
+```bash
+git checkout app/builders/messages/message_builder.rb
+git checkout app/controllers/api/v1/accounts/inboxes/jasmine/tools_controller.rb
+git checkout spec/models/channel/whatsapp_spec.rb
+git checkout spec/models/contact_spec.rb
+```
diff --git a/spec/factories/jasmine_factories.rb b/spec/factories/jasmine_factories.rb
index 152a797..c00728d 100644
--- a/spec/factories/jasmine_factories.rb
+++ b/spec/factories/jasmine_factories.rb
@@ -2,7 +2,7 @@ FactoryBot.define do
   factory :jasmine_inbox_config, class: 'Jasmine::InboxConfig' do
     association :account
     association :inbox
-    name { "Test Jasmine" }
+    name { 'Test Jasmine' }
     is_enabled { true }
   end
 
@@ -10,7 +10,7 @@ FactoryBot.define do
     association :account
     sequence(:name) { |n| "Collection #{n}" }
     visibility { :private }
-    
+
     trait :private do
       visibility { :private }
       association :owner_inbox, factory: :inbox
@@ -32,6 +32,6 @@ FactoryBot.define do
   factory :jasmine_document, class: 'Jasmine::Document' do
     association :account
     association :collection, factory: :jasmine_collection
-    content { "Sample Content" }
+    content { 'Sample Content' }
   end
 end
diff --git a/spec/models/channel/whatsapp_spec.rb b/spec/models/channel/whatsapp_spec.rb
index e1e74f4..f47d9ae 100755
--- a/spec/models/channel/whatsapp_spec.rb
+++ b/spec/models/channel/whatsapp_spec.rb
@@ -22,7 +22,8 @@
 # Indexes
 #
 #  index_channel_whatsapp_on_phone_number      (phone_number) UNIQUE
-#  index_channel_whatsapp_provider_connection  (provider_connection) WHERE ((provider)::text = ANY ((ARRAY['baileys'::character varying, 'zapi'::character varying])::text[])) USING gin
+#  index_channel_whatsapp_provider_connection  (provider_connection)
+#    WHERE ((provider)::text = ANY ((ARRAY['baileys'::character varying, 'zapi'::character varying])::text[])) USING gin
 #
 require 'rails_helper'
 require Rails.root.join 'spec/models/concerns/reauthorizable_shared.rb'
diff --git a/spec/models/contact_spec.rb b/spec/models/contact_spec.rb
index 156931a..48d98ab 100755
--- a/spec/models/contact_spec.rb
+++ b/spec/models/contact_spec.rb
@@ -32,9 +32,11 @@
 #  index_contacts_on_company_id                          (company_id)
 #  index_contacts_on_lower_email_account_id              (lower((email)::text), account_id)
 #  index_contacts_on_name_email_phone_number_identifier  (name,email,phone_number,identifier) USING gin
-#  index_contacts_on_nonempty_fields                     (account_id,email,phone_number,identifier) WHERE (((email)::text <> ''::text) OR ((phone_number)::text <> ''::text) OR ((identifier)::text <> ''::text))
+#  index_contacts_on_nonempty_fields                     (account_id,email,phone_number,identifier)
+#    WHERE (((email)::text <> ''::text) OR ((phone_number)::text <> ''::text) OR ((identifier)::text <> ''::text))
 #  index_contacts_on_phone_number_and_account_id         (phone_number,account_id)
-#  index_resolved_contact_account_id                     (account_id) WHERE (((email)::text <> ''::text) OR ((phone_number)::text <> ''::text) OR ((identifier)::text <> ''::text))
+#  index_resolved_contact_account_id                     (account_id)
+#    WHERE (((email)::text <> ''::text) OR ((phone_number)::text <> ''::text) OR ((identifier)::text <> ''::text))
 #  uniq_email_per_account_contact                        (email,account_id) UNIQUE
 #  uniq_identifier_per_account_contact                   (identifier,account_id) UNIQUE
 #
diff --git a/spec/models/jasmine/inbox_collection_spec.rb b/spec/models/jasmine/inbox_collection_spec.rb
index 74098e1..db6ec1c 100644
--- a/spec/models/jasmine/inbox_collection_spec.rb
+++ b/spec/models/jasmine/inbox_collection_spec.rb
@@ -32,11 +32,11 @@ RSpec.describe Jasmine::InboxCollection do
   let!(:account) { create(:account) }
   let!(:inbox) { create(:inbox, account: account) }
   let!(:other_inbox) { create(:inbox, account: account) }
-  
+
   let!(:private_coll) { create(:jasmine_collection, :private, owner_inbox: inbox, account: account) }
   let!(:shared_coll) { create(:jasmine_collection, :shared, account: account) }
 
-  context 'validations' do
+  context 'when linking collections' do
     it 'allows linking private collection to owner inbox' do
       link = build(:jasmine_inbox_collection, inbox: inbox, collection: private_coll, account: account)
       expect(link).to be_valid
@@ -45,7 +45,7 @@ RSpec.describe Jasmine::InboxCollection do
     it 'prevents linking private collection to non-owner inbox' do
       link = build(:jasmine_inbox_collection, inbox: other_inbox, collection: private_coll, account: account)
       expect(link).not_to be_valid
-      expect(link.errors[:base]).to include("Private collections can only be linked to their owner inbox")
+      expect(link.errors[:base]).to include('Private collections can only be linked to their owner inbox')
     end
 
     it 'allows linking shared collection to any inbox in account' do
diff --git a/spec/services/jasmine/semantic_search_service_spec.rb b/spec/services/jasmine/semantic_search_service_spec.rb
index 71a9f0a..69dc651 100644
--- a/spec/services/jasmine/semantic_search_service_spec.rb
+++ b/spec/services/jasmine/semantic_search_service_spec.rb
@@ -3,19 +3,15 @@ require 'rails_helper'
 RSpec.describe Jasmine::SemanticSearchService do
   subject { described_class.new(inbox) }
 
-  let!(:account) { create(:account) }
-  let!(:inbox) { create(:inbox, account: account) }
-  let!(:config) { create(:jasmine_inbox_config, inbox: inbox, account: account, is_enabled: true) }
+  let(:account) { create(:account) }
+  let(:inbox) { create(:inbox, account: account) }
+  let(:config) { create(:jasmine_inbox_config, inbox: inbox, account: account, is_enabled: true) }
 
-  let!(:collection_private) { create(:jasmine_collection, name: 'Private', visibility: :private, owner_inbox: inbox, account: account) }
-  let!(:collection_shared) { create(:jasmine_collection, name: 'Shared', visibility: :shared, account: account) }
+  let(:collection_private) { create(:jasmine_collection, name: 'Private', visibility: :private, owner_inbox: inbox, account: account) }
+  let(:collection_shared) { create(:jasmine_collection, name: 'Shared', visibility: :shared, account: account) }
 
-  # Link collections: Private (High Priority), Shared (Low Priority)
-  let!(:link_private) { create(:jasmine_inbox_collection, inbox: inbox, collection: collection_private, priority: 10, account: account) }
-  let!(:link_shared) { create(:jasmine_inbox_collection, inbox: inbox, collection: collection_shared, priority: 0, account: account) }
-
-  let!(:doc_private) { create(:jasmine_document, collection: collection_private, content: 'Private Secret', account: account) }
-  let!(:doc_shared) { create(:jasmine_document, collection: collection_shared, content: 'Shared Knowledge', account: account) }
+  let(:doc_private) { create(:jasmine_document, collection: collection_private, content: 'Private Secret', account: account) }
+  let(:doc_shared) { create(:jasmine_document, collection: collection_shared, content: 'Shared Knowledge', account: account) }
 
   # Mock Embedding Service behavior by creating chunks directly with known vectors
   # Query Vector: [1.0, 0.0, ...]
@@ -24,6 +20,19 @@ RSpec.describe Jasmine::SemanticSearchService do
   # Irrelevant: [0.0, 1.0, ...] -> Distance ~1.0
 
   before do
+    # Ensure all `let` variables are initialized
+    account
+    inbox
+    config
+    collection_private
+    collection_shared
+    doc_private
+    doc_shared
+
+    # Link collections
+    create(:jasmine_inbox_collection, inbox: inbox, collection: collection_private, priority: 10, account: account)
+    create(:jasmine_inbox_collection, inbox: inbox, collection: collection_shared, priority: 0, account: account)
+
     # Create chunks manually to bypass job/api dependency
     create_chunk(doc_private, [0.9] + ([0.0]*1535))
     create_chunk(doc_shared, [0.8] + ([0.0]*1535))
diff --git a/test_multi_agent_flow.rb b/test_multi_agent_flow.rb
index a9ea954..fdb3b0d 100644
--- a/test_multi_agent_flow.rb
+++ b/test_multi_agent_flow.rb
@@ -1,22 +1,21 @@
 # test_multi_agent_flow.rb
 assistant = Captain::Assistant.find_by(name: 'Jasmine (Hotel Prime)')
-account = assistant.account
 
 def simulate_handoff(assistant, user_msg)
   puts "\n=========================================================="
   puts "USUÁRIO: #{user_msg}"
-  
+
   # Usando o motor Multi-Agente (V2) sem conversation real para o Playground
   runner = Captain::Assistant::AgentRunnerService.new(assistant: assistant)
-  
+
   # Capturando o resultado do motor
   result = runner.generate_response(message_history: [{ role: 'user', content: user_msg }])
-  
+
   puts "AGENTE QUE RESPONDEU: #{result['agent_name']}"
   puts "RESPOSTA FINAL: #{result['response']}"
   puts "RACIOCÍNIO: #{result['reasoning']}"
   puts "SENTIMENTO: #{result['sentiment']}"
-  puts "=========================================================="
+  puts '=========================================================='
 end
 
-simulate_handoff(assistant, "Gostaria de agendar um quarto para amanhã às 22h")
\ No newline at end of file
+simulate_handoff(assistant, 'Gostaria de agendar um quarto para amanhã às 22h')
diff --git a/update_real_data.rb b/update_real_data.rb
index d1a1d36..87cf3d2 100644
--- a/update_real_data.rb
+++ b/update_real_data.rb
@@ -12,7 +12,6 @@ if channel
   puts 'Updating existing channel...'
   channel.phone_number = phone_number
   channel.provider_config['webhook_url'] = webhook_url
-  channel.save(validate: false)
 else
   puts 'Creating new channel...'
   account = Account.first
@@ -26,8 +25,8 @@ else
       'webhook_url' => webhook_url
     }
   )
-  channel.save(validate: false)
 end
+channel.save(validate: false)
 
 # Ensure inbox exists
 inbox = Inbox.find_by(channel: channel)