fix: Implement resend confirmation feature for login page (#11970)

# Pull Request Template

## Description

This PR fixes the non-functional resend confirmation feature on the V3
login page where clicking "Resend confirmation" did nothing. The issue
was caused by the V3 store not having the `resendConfirmation` action
that the login page was trying to dispatch.

**Key improvements:**
- Fixed V3 store integration by importing `resendConfirmation` directly
from auth API
- Added comprehensive UX improvements with loading states and 60-second
cooldown timer
- Implemented environment-aware debug logging for development
- Added proper error handling and user feedback
- Enhanced backend test coverage

**Context:** Users with unconfirmed accounts were unable to resend
confirmation emails from the login page, creating a poor user experience
and potential support burden.

Fixes #3157

## Type of change

- [x] Bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality not to work as expected)
- [ ] This change requires a documentation update

## How Has This Been Tested?

**Backend Testing:**
- All existing resend_confirmation tests passing (7/7)
- Added comprehensive new test suite in
`spec/requests/api/v1/resend_confirmation_spec.rb`
- API endpoint returns 200 OK responses in ~0.39 seconds
- Email delivery confirmed via SMTP with test user `info@airbonar.com`

**Frontend Testing:**
- All frontend tests passing 
- ESLint compliant code with automatic corrections applied
- Manual testing of login page functionality:
  - 60-second cooldown timer with countdown display
  - Error handling with user-friendly messages
  - Development logging works (console output in dev mode only)

**Test Configuration:**
- Ruby/Rails backend with RSpec test suite
- Vue.js frontend with Jest/testing-library
- Development environment with Gmail SMTP configured
- Test user: unconfirmed account `info@airbonar.com`

**Reproduction Steps:**
1. Navigate to login page with unconfirmed account
2. Click "Resend confirmation link"
3. Observe loading state, API call, and success feedback
4. Verify 60-second cooldown prevents spam
5. Check email delivery.

## Checklist:

- [ ] 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
- [ ] 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
- [ ] Any dependent changes have been merged and published in downstream
modules

---------

Co-authored-by: Sivin Varghese <64252451+iamsivin@users.noreply.github.com>
Co-authored-by: Sojan Jose <sojan@pepalo.com>
Co-authored-by: Sony Mathew <2040199+sony-mathew@users.noreply.github.com>
Co-authored-by: Sony Mathew <sony@chatwoot.com>

app/javascript/v3/api/auth.js

@@ -2,6 +2,7 @@ import {
   setAuthCredentials,
   throwErrorMessage,
   clearLocalStorageOnLogout,
+  parseAPIErrorResponse,
 } from 'dashboard/store/utils/api';
 import wootAPI from './apiClient';
 import {
@@ -42,8 +43,9 @@ export const login = async ({
         mfaToken: error.response.data.mfa_token,
       };
     }
-    throwErrorMessage(error);
-    return null;
+    const loginError = new Error(parseAPIErrorResponse(error));
+    loginError.errorCode = error.response?.data?.error_code;
+    throw loginError;
   }
 };
 

app/javascript/v3/views/login/Index.vue

@@ -26,6 +26,7 @@ const ERROR_MESSAGES = {
 };
 
 const IMPERSONATION_URL_SEARCH_KEY = 'impersonation';
+const USER_NOT_CONFIRMED_ERROR_CODE = 'user_not_confirmed';
 
 export default {
   components: {
@@ -185,6 +186,15 @@ export default {
           this.showAlertMessage(this.$t('LOGIN.API.SUCCESS_MESSAGE'));
         })
         .catch(response => {
+          if (response?.errorCode === USER_NOT_CONFIRMED_ERROR_CODE) {
+            this.loginApi.showLoading = false;
+            this.$router.push({
+              name: 'auth_verify_email',
+              state: { email: credentials.email },
+            });
+            return;
+          }
+
           // Reset URL Params if the authentication is invalid
           if (this.email) {
             window.location = '/app/login';