feat: add cloudOnboarding translations for all supported languages (#5578)

* feat: add missing translations for cloud onboarding components

Replaces hardcoded text with i18n translations across cloud onboarding flow:

- CloudWaitlistView: Add translations for title lines, questions text, and contact link
- CloudClaimInviteView: Add translations for processing title and claim button
- CloudSorryContactSupportView: Add translation for error title
- CloudVerifyEmailView: Add translation for verification title
- CloudTemplateFooter: Add translation for "Need Help?" link
- CloudLoginView: Replace hardcoded "Questions? Contact us" and "here" with translations
- CloudSignupView: Replace hardcoded "Questions? Contact us" and "here" with translations
- CloudForgotPasswordView: Replace hardcoded "here" with translation
- Remove all eslint-disable @intlify/vue-i18n/no-raw-text comments
- Add proper useI18n imports to all affected components

Ensures consistent internationalization support across the entire cloud onboarding experience.

* feat: add cloudOnboarding translations for all supported languages

Adds comprehensive translations for cloud onboarding components across all supported locales:

English (en): Base translations for waitlist, claim invite, verify email, and support
Chinese Simplified (zh): 等候名单, 邀请码处理, 邮箱验证, 联系支持
Chinese Traditional (zh-TW): 等候名單, 邀請碼處理, 郵箱驗證, 聯繫支援
Japanese (ja): ウェイトリスト, 招待コード処理, メール認証, サポート連絡
Korean (ko): 대기명단, 초대코드 처리, 이메일 인증, 지원 문의
Russian (ru): Список ожидания, обработка кода приглашения, подтверждение почты
French (fr): Liste d'attente, traitement code invitation, vérification email
Spanish (es): Lista de espera, procesamiento código invitación, verificación email
Arabic (ar): قائمة الانتظار, معالجة رمز الدعوة, التحقق من البريد

Ensures consistent internationalization across the entire cloud onboarding experience for global users.

* feat: add missing privateBeta and start section translations

Adds translations for previously missing cloud onboarding text that was already using translation keys:

- privateBeta.title: "Cloud is currently in private beta" message
- privateBeta.desc: Beta signup description text
- start.title: "Start creating in seconds" header
- start.desc: "Zero setup required" subtext
- start.explain: Multiple output generation description
- start.learnAboutButton: "Learn about Cloud" button text
- start.wantToRun: Local ComfyUI option text
- start.download: "Download ComfyUI" button text

All 9 languages updated:
- Traditional Chinese: 私人測試階段, 幾秒內開始創作, 了解 Cloud
- Simplified Chinese: 私人测试阶段, 几秒内开始创作, 了解 Cloud
- Japanese: プライベートベータ版, 数秒で創作を開始, Cloudについて学ぶ
- Korean: 비공개 베타 버전, 몇 초 만에 창작 시작, Cloud에 대해 알아보기
- Russian: закрытая бета-версия, начните создавать за секунды, Узнать о Cloud
- French: bêta privée, commencez à créer en quelques secondes, En savoir plus sur Cloud
- Spanish: beta privada, comienza a crear en segundos, Aprende sobre Cloud
- Arabic: البيتا الخاصة, ابدأ الإبداع في ثوان, تعلم عن Cloud

Fixes missing translations reported during Traditional Chinese testing.

* feat: restore French translation file and add cloudOnboarding translations

- Restored src/locales/fr/main.json from clean backup to remove duplicate sections
- Added complete French translations for cloudOnboarding section
- Includes survey, waitlist, forgotPassword, privateBeta, start, and other subsections
- Structure matches English version exactly

* [feat] Refactor cloud translations to top-level keys

- Replace nested cloudOnboarding.section.key structure with flattened cloudSection_key pattern
- Add comprehensive cloud translations for all 9 supported languages (ar, en, es, fr, ja, ko, ru, zh, zh-TW)
- Update all Vue components to use new translation key structure
- Fix "Need Help?" and other missing translations across all languages
- Simplify translation maintenance and avoid JSON structure conflicts

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

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

---------

Co-authored-by: Claude <noreply@anthropic.com>

src/platform/onboarding/cloud/CloudVerifyEmailView.vue

@@ -1,16 +1,18 @@
-<!-- eslint-disable @intlify/vue-i18n/no-raw-text -->
 <template>
   <div>
-    <h1>Email Verification</h1>
+    <h1>{{ t('cloudVerifyEmail_title') }}</h1>
   </div>
 </template>
 
 <script setup lang="ts">
 import { onMounted } from 'vue'
+import { useI18n } from 'vue-i18n'
 
 // import { verifyEmail } from '@/api/auth'
 import router from '@/router'
 
+const { t } = useI18n()
+
 onMounted(async () => {
   // verifyEmail()
   await router.push({ name: 'cloud-invite-check' })