fix: log only on system api key failures (#13968)

Removes sentry flooding of unnecessary rubyllm logs of wrong API key.
Logs only system api key error since it would be P0.

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

spec/enterprise/lib/captain/conversation_completion_service_spec.rb

@@ -141,15 +141,15 @@ RSpec.describe Captain::ConversationCompletionService do
         service.perform
       end
 
-      it 'falls back to the account hook key when no system key exists' do
+      it 'does not fall back to the account hook key when no system key exists' do
         InstallationConfig.find_by(name: 'CAPTAIN_OPEN_AI_API_KEY').update!(value: nil)
 
-        expect(Llm::Config).to receive(:with_api_key).with('customer-own-key', api_base: anything).and_yield(mock_context)
-        allow(mock_chat).to receive(:ask).and_return(
-          instance_double(RubyLLM::Message, content: { 'complete' => true, 'reason' => 'Done' }, input_tokens: 10, output_tokens: 5)
-        )
+        expect(Llm::Config).not_to receive(:with_api_key)
 
-        service.perform
+        result = service.perform
+
+        expect(result[:complete]).to be false
+        expect(result[:reason]).to eq(I18n.t('captain.api_key_missing'))
       end
     end
 

spec/lib/captain/base_task_service_spec.rb

@@ -258,6 +258,18 @@ RSpec.describe Captain::BaseTaskService do
       expect(result[:error]).to eq('API Error')
       expect(result[:request_messages]).to eq(messages)
     end
+
+    it 'does not track exceptions for account hook failures' do
+      create(:integrations_hook, :openai, account: account, settings: { 'api_key' => 'hook-key' })
+
+      expect(Llm::Config).to receive(:with_api_key).with('hook-key', api_base: anything).and_raise(error)
+      expect(ChatwootExceptionTracker).not_to receive(:new)
+
+      result = service.send(:make_api_call, model: model, messages: messages)
+
+      expect(result[:error]).to eq('API Error')
+      expect(result[:request_messages]).to eq(messages)
+    end
   end
 
   describe '#api_key' do
@@ -276,6 +288,16 @@ RSpec.describe Captain::BaseTaskService do
         expect(service.send(:api_key)).to eq('test-key')
       end
     end
+
+    context 'when no API key is configured' do
+      before do
+        InstallationConfig.find_by(name: 'CAPTAIN_OPEN_AI_API_KEY')&.destroy
+      end
+
+      it 'returns nil' do
+        expect(service.send(:api_key)).to be_nil
+      end
+    end
   end
 
   describe '#prompt_from_file' do

spec/lib/integrations/llm_base_service_spec.rb

@@ -0,0 +1,28 @@
+require 'rails_helper'
+
+RSpec.describe Integrations::LlmBaseService do
+  let(:account) { create(:account) }
+  let(:inbox) { create(:inbox, account: account) }
+  let(:conversation) { create(:conversation, account: account, inbox: inbox) }
+  let(:hook) { create(:integrations_hook, :openai, account: account, settings: { 'api_key' => 'hook-key' }) }
+  let(:event) { { 'name' => 'summarize', 'data' => { 'conversation_display_id' => conversation.display_id } } }
+  let(:service) { described_class.new(hook: hook, event: event) }
+  let(:error) { StandardError.new('API Error') }
+  let(:body) { { model: 'gpt-4', messages: [{ role: 'user', content: 'Hello' }] }.to_json }
+
+  describe '#make_api_call' do
+    before do
+      allow(service).to receive(:instrument_llm_call).and_yield
+      allow(Llm::Config).to receive(:with_api_key).and_raise(error)
+    end
+
+    it 'does not track exceptions for hook key failures' do
+      expect(ChatwootExceptionTracker).not_to receive(:new)
+
+      result = service.send(:make_api_call, body)
+
+      expect(result[:error]).to eq('API Error')
+      expect(result[:request_messages]).to eq([{ 'role' => 'user', 'content' => 'Hello' }])
+    end
+  end
+end