feat: add Translation Management with approval workflow

- New Translations + TranslationTexts NocoDB tables (auto-created on restart)
- Full CRUD: list, create, update, delete, bulk-delete translations
- Translation texts per language (add/edit/delete inline)
- Review flow: submit-review generates public token link
- Public review page: shows source + all translations, approve/reject/revision
- Email notifications to approvers (registered users)
- Sidebar nav under Marketing category
- Bilingual i18n (80+ keys in en.json and ar.json)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/notifications.js

@@ -85,8 +85,10 @@ const t = {
   // Types
   post:     { en: 'post',     ar: 'منشور' },
   artefact: { en: 'artefact', ar: 'قطعة إبداعية' },
-  Post:     { en: 'Post',     ar: 'المنشور' },
-  Artefact: { en: 'Artefact', ar: 'القطعة الإبداعية' },
+  Post:        { en: 'Post',        ar: 'المنشور' },
+  Artefact:    { en: 'Artefact',    ar: 'القطعة الإبداعية' },
+  translation: { en: 'translation', ar: 'ترجمة' },
+  Translation: { en: 'Translation', ar: 'الترجمة' },
 
   // Generic
   view:     { en: 'View',     ar: 'عرض' },
@@ -192,14 +194,14 @@ function notifyApproved({ type, record, approverName }) {
   getUser(creatorId).then(user => {
     if (!user) return;
     const l = user.lang;
-    const typeLabel = tr(type === 'post' ? 'Post' : 'Artefact', l);
+    const typeLabel = tr(type === 'post' ? 'Post' : type === 'translation' ? 'Translation' : 'Artefact', l);
     send({
       to: user.email, lang: l,
       subject: `${tr('approved', l)}: ${title}`,
       heading: tr('approvedHeading', l)(typeLabel),
       bodyHtml: `<p>${tr('approvedBody', l)(title, approverName || (l === 'ar' ? 'مراجع' : 'a reviewer'))}</p>`,
       ctaText: `${tr('view', l)} ${typeLabel}`,
-      ctaUrl: `${APP_URL}/${type === 'post' ? 'posts' : 'artefacts'}`,
+      ctaUrl: `${APP_URL}/${type === 'post' ? 'posts' : type === 'translation' ? 'translations' : 'artefacts'}`,
     });
   });
 }
@@ -213,7 +215,7 @@ function notifyRejected({ type, record, approverName, feedback }) {
   getUser(creatorId).then(user => {
     if (!user) return;
     const l = user.lang;
-    const typeLabel = tr(type === 'post' ? 'Post' : 'Artefact', l);
+    const typeLabel = tr(type === 'post' ? 'Post' : type === 'translation' ? 'Translation' : 'Artefact', l);
     send({
       to: user.email, lang: l,
       subject: `${tr('needsChanges', l)}: ${title}`,
@@ -222,16 +224,18 @@ function notifyRejected({ type, record, approverName, feedback }) {
         <p>${tr('rejectedBody', l)(title, approverName || (l === 'ar' ? 'مراجع' : 'a reviewer'))}</p>
         ${feedback ? `<blockquote ${BLOCKQUOTE}>${feedback}</blockquote>` : ''}`,
       ctaText: `${tr('view', l)} ${typeLabel}`,
-      ctaUrl: `${APP_URL}/${type === 'post' ? 'posts' : 'artefacts'}`,
+      ctaUrl: `${APP_URL}/${type === 'post' ? 'posts' : type === 'translation' ? 'translations' : 'artefacts'}`,
     });
   });
 }
 
 // 4. Revision requested (artefact) → notify creator
-function notifyRevisionRequested({ record, approverName, feedback }) {
+function notifyRevisionRequested({ type, record, approverName, feedback }) {
   const creatorId = record.created_by_user_id;
   if (!creatorId) return;
   const title = record.title || 'Untitled';
+  const entityType = type === 'translation' ? 'Translation' : 'Artefact';
+  const entityPath = type === 'translation' ? 'translations' : 'artefacts';
 
   getUser(creatorId).then(user => {
     if (!user) return;
@@ -243,8 +247,8 @@ function notifyRevisionRequested({ record, approverName, feedback }) {
       bodyHtml: `
         <p>${tr('revisionRequestedBody', l)(title, approverName || (l === 'ar' ? 'مراجع' : 'a reviewer'))}</p>
         ${feedback ? `<blockquote ${BLOCKQUOTE}>${feedback}</blockquote>` : ''}`,
-      ctaText: `${tr('view', l)} ${tr('Artefact', l)}`,
-      ctaUrl: `${APP_URL}/artefacts`,
+      ctaText: `${tr('view', l)} ${tr(entityType, l)}`,
+      ctaUrl: `${APP_URL}/${entityPath}`,
     });
   });
 }