feat: captain custom tools v1 (#13890)

# Pull Request Template

## Description

Adds custom tool support to v1

## Type of change
- [x] New feature (non-breaking change which adds functionality)


## How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide
instructions so we can reproduce. Please also list any relevant details
for your test configuration.

<img width="1816" height="958" alt="CleanShot 2026-03-24 at 11 37 33@2x"
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/>

<img width="378" height="488" alt="CleanShot 2026-03-24 at 11 38 18@2x"
src="https://github.com/user-attachments/assets/f6973c99-efd0-40e4-90fe-4472a2f63cea"
/>

<img width="1884" height="1452" alt="CleanShot 2026-03-24 at 11 38
32@2x"
src="https://github.com/user-attachments/assets/9fba4fc4-0c33-46da-888a-52ec6bad6130"
/>



## Checklist:

- [x] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my code
- [ ] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules

---------

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

spec/enterprise/controllers/api/v1/accounts/captain/custom_tools_controller_spec.rb

@@ -5,6 +5,8 @@ RSpec.describe 'Api::V1::Accounts::Captain::CustomTools', type: :request do
   let(:admin) { create(:user, account: account, role: :administrator) }
   let(:agent) { create(:user, account: account, role: :agent) }
 
+  before { account.enable_features!('custom_tools') }
+
   def json_response
     JSON.parse(response.body, symbolize_names: true)
   end
@@ -40,7 +42,7 @@ RSpec.describe 'Api::V1::Accounts::Captain::CustomTools', type: :request do
         expect(json_response[:payload].length).to eq(5)
       end
 
-      it 'returns only enabled custom tools' do
+      it 'returns all custom tools including disabled' do
         create(:captain_custom_tool, account: account, enabled: true)
         create(:captain_custom_tool, account: account, enabled: false)
         get "/api/v1/accounts/#{account.id}/captain/custom_tools",
@@ -48,8 +50,7 @@ RSpec.describe 'Api::V1::Accounts::Captain::CustomTools', type: :request do
             as: :json
 
         expect(response).to have_http_status(:success)
-        expect(json_response[:payload].length).to eq(1)
-        expect(json_response[:payload].first[:enabled]).to be(true)
+        expect(json_response[:payload].length).to eq(2)
       end
     end
   end