feat(captain): Add paywall and expose Custom Tools (#13977)

# Pull Request Template

## Description

Custom tools is now discoverable on all plans

## Type of change
- [x] Bug fix (non-breaking change which fixes an issue)

## How Has This Been Tested?

Before:
<img width="390" height="446" alt="CleanShot 2026-04-02 at 13 40 11@2x"
src="https://github.com/user-attachments/assets/0a751954-f3ad-47d6-85b8-1e2f1476a646"
/>


After:

<img width="392" height="522" alt="CleanShot 2026-04-02 at 13 40 47@2x"
src="https://github.com/user-attachments/assets/62a252f6-2551-47a9-b50c-be949f08c456"
/>

<img width="1826" height="638" alt="CleanShot 2026-04-02 at 13 37 39@2x"
src="https://github.com/user-attachments/assets/77dc2a75-3d76-44cf-8579-8d3457879bd0"
/>


## Checklist:

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

---------

Co-authored-by: Shivam Mishra <scm.mymail@gmail.com>

app/javascript/dashboard/components-next/captain/pageComponents/Paywall.vue

@@ -6,6 +6,13 @@ import { useAccount } from 'dashboard/composables/useAccount';
 
 import BasePaywallModal from 'dashboard/routes/dashboard/settings/components/BasePaywallModal.vue';
 
+defineProps({
+  featurePrefix: {
+    type: String,
+    default: 'CAPTAIN',
+  },
+});
+
 const router = useRouter();
 const currentUser = useMapGetter('getCurrentUser');
 
@@ -31,7 +38,7 @@ const openBilling = () => {
   >
     <BasePaywallModal
       class="mx-auto"
-      feature-prefix="CAPTAIN"
+      :feature-prefix="featurePrefix"
       :i18n-key="i18nKey"
       :is-super-admin="isSuperAdmin"
       :is-on-chatwoot-cloud="isOnChatwootCloud"