feat: Update Captain navigation structure (#12761)

# Pull Request Template

## Description

This PR includes an update to the Captain navigation structure.

## Route Structure

```javascript
1. captain_assistants_responses_index    → /captain/:assistantId/faqs
2. captain_assistants_documents_index    → /captain/:assistantId/documents
3. captain_assistants_scenarios_index    → /captain/:assistantId/scenarios
4. captain_assistants_playground_index   → /captain/:assistantId/playground
5. captain_assistants_inboxes_index      → /captain/:assistantId/inboxes
6. captain_tools_index                   → /captain/tools
7. captain_assistants_settings_index     → /captain/:assistantId/settings
8. captain_assistants_guardrails_index   → /captain/:assistantId/settings/guardrails
9. captain_assistants_guidelines_index   → /captain/:assistantId/settings/guidelines
10. captain_assistants_index             → /captain/:navigationPath
```

**How it works:**

1. User clicks sidebar item → Routes to `captain_assistants_index` with
`navigationPath`
2. `AssistantsIndexPage` validates route and gets last active assistant,
if not redirects to assistant create page.
3. Routes to actual page: `/captain/:assistantId/:page`
4. Page loads with correct assistant context

Fixes
https://linear.app/chatwoot/issue/CW-5832/updating-captain-navigation

## Type of change

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

## How Has This Been Tested?




## Checklist:

- [x] My code follows the style guidelines of this project
- [x] 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
- [x] My changes generate no new warnings
- [ ] 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
- [ ] Any dependent changes have been merged and published in downstream
modules

---------

Co-authored-by: Pranav <pranav@chatwoot.com>
Co-authored-by: Sojan Jose <sojan@pepalo.com>

app/javascript/dashboard/components-next/sidebar/provider.js

@@ -19,19 +19,46 @@ export function useSidebarContext() {
     return '/';
   };
 
+  // Helper to find route definition by name without resolving
+  const findRouteByName = name => {
+    const routes = router.getRoutes();
+    return routes.find(route => route.name === name);
+  };
+
   const resolvePermissions = to => {
-    if (to) return router.resolve(to)?.meta?.permissions ?? [];
-    return [];
+    if (!to) return [];
+
+    // If navigationPath param exists, get the target route definition
+    if (to.params?.navigationPath) {
+      const targetRoute = findRouteByName(to.params.navigationPath);
+      return targetRoute?.meta?.permissions ?? [];
+    }
+
+    return router.resolve(to)?.meta?.permissions ?? [];
   };
 
   const resolveFeatureFlag = to => {
-    if (to) return router.resolve(to)?.meta?.featureFlag || '';
-    return '';
+    if (!to) return '';
+
+    // If navigationPath param exists, get the target route definition
+    if (to.params?.navigationPath) {
+      const targetRoute = findRouteByName(to.params.navigationPath);
+      return targetRoute?.meta?.featureFlag || '';
+    }
+
+    return router.resolve(to)?.meta?.featureFlag || '';
   };
 
   const resolveInstallationType = to => {
-    if (to) return router.resolve(to)?.meta?.installationTypes || [];
-    return [];
+    if (!to) return [];
+
+    // If navigationPath param exists, get the target route definition
+    if (to.params?.navigationPath) {
+      const targetRoute = findRouteByName(to.params.navigationPath);
+      return targetRoute?.meta?.installationTypes || [];
+    }
+
+    return router.resolve(to)?.meta?.installationTypes || [];
   };
 
   const isAllowed = to => {