Enhance RBAC user management UI and fix permission checks

- Add role management to "By User" tab
  - Show all users with roles and/or direct permissions
  - Add ability to assign/revoke roles from users
  - Display role chips as clickable and removable
  - Add "Assign Role" button for each user

- Fix account_id validation error in permission granting
  - Extract account_id string from Quasar q-select object
  - Apply fix to grantPermission, bulkGrantPermissions, and addRolePermission

- Fix role-based permission checking for expense submission
  - Update get_user_permissions_with_inheritance() to include role permissions
  - Ensures users with role-based permissions can submit expenses

- Improve Vue reactivity for role details dialog
  - Use spread operator to create fresh arrays
  - Add $nextTick() before showing dialog

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

static/js/index.js

@@ -3,7 +3,6 @@ const mapJournalEntry = obj => {
 }
 
 window.app = Vue.createApp({
-  el: '#vue',
   mixins: [windowMixin],
   data() {
     return {