feat: add settings page with navigation and access control updates

web/src/utils/accessControl.js

@@ -6,7 +6,8 @@ export const DEFAULT_APP_VIEW_ORDER = [
   'chat',
   'policies',
   'audit',
-  'employees'
+  'employees',
+  'settings'
 ]
 
 const ALWAYS_VISIBLE_VIEWS = new Set(['workbench', 'requests', 'chat'])
@@ -15,7 +16,8 @@ const VIEW_ROLE_RULES = {
   approval: ['approver'],
   policies: ['manager'],
   audit: ['auditor'],
-  employees: ['manager']
+  employees: ['manager'],
+  settings: ['manager']
 }
 
 function normalizedRoleCodes(user) {