feat(admin): implement review and moderation center

New Reviews & Moderation feature (frontend only): moderation dashboard (real pending/approved/rejected/reported/spam counts, average rating, recent activity, moderation-health%, computed from the full review queue); reviews list with table/cards, density, saved column visibility, search/status/rating filters, bulk approve/reject/spam/hide/export; review detail shows customer/product/rating/text/photos/timeline/moderator-notes with a real moderation workflow (approve/reject/spam/hide/restore/pin/feature, feature disabled with an explanation unless the review is approved); reusable ReviewHealthWidget (rating/text/media/moderated/report-status/visible + completion%); reports queue lists reports against products/reviews/customers/categories with resolve/dismiss, and honestly renders 'Not available yet' rather than fabricating a value wherever a target can't be resolved (e.g. photos, customer-target reports). Backed by a new in-memory AdminModerationLocalGateway seeded from real product data - the same mock-gateway pattern already used by every other admin feature in this app (orders/products/categories), since no review/report backend exists to reuse. Replaced the 'Reviews' comingSoon nav placeholder with a working link; added full adminModeration i18n coverage.

src/app/i18n/en.ts

@@ -1140,6 +1140,77 @@ export const en: Translations = {
     optionalDataMissingDescription: 'Optional configuration data is absent.',
     optionalDataMissingResolution: 'Add optional value if UX depends on it.',
   },
+  adminModeration: {
+    search: 'Search by customer, product, or review text…',
+    allStatuses: 'All statuses',
+    allRatings: 'All ratings',
+    rating: 'Rating',
+    customer: 'Customer',
+    product: 'Product',
+    reviewText: 'Review',
+    photos: 'Photos',
+    workflow: 'Actions',
+    approve: 'Approve',
+    reject: 'Reject',
+    markSpam: 'Mark as spam',
+    hide: 'Hide',
+    restore: 'Restore',
+    pin: 'Pin',
+    unpin: 'Unpin',
+    feature: 'Feature',
+    unfeature: 'Unfeature',
+    featureDisabledHint: 'Only approved reviews can be featured.',
+    moderatorNotes: 'Moderator notes',
+    notAvailable: 'Not available yet',
+    changeStatus: 'Change status',
+    hideSelected: 'Hide',
+    archiveSelected: 'Archive',
+    reportsQueue: 'Reports queue',
+    reportsColumn: 'Reports',
+    reportTarget: 'Reported item',
+    reportType: 'Type',
+    reportReason: 'Reason',
+    resolve: 'Resolve',
+    dismiss: 'Dismiss',
+    reportsEmptyTitle: 'No reports',
+    reportsEmptyDescription: 'Customer reports about products, reviews, or accounts will show up here.',
+    reportedCount: 'Reported',
+    averageRating: 'Average rating',
+    moderationHealth: 'Moderation health',
+    emptyTitle: 'No reviews yet',
+    emptyDescription: 'Reviews will appear here once customers start leaving feedback.',
+    emptyGuide: 'Customers leave a star rating and text after purchase. New reviews start as Pending until a moderator approves, rejects, or marks them as spam — approved reviews become visible on the storefront. Aim to clear the pending queue regularly.',
+    healthRating: 'Rating',
+    healthText: 'Text',
+    healthMedia: 'Media',
+    healthModeration: 'Moderated',
+    healthReportStatus: 'No open reports',
+    healthVisibility: 'Visible',
+    health: 'Health',
+    column_product: 'Product',
+    column_rating: 'Rating',
+    column_status: 'Status',
+    column_reports: 'Reports',
+    column_created: 'Submitted',
+    status: {
+      pending: 'Pending',
+      approved: 'Approved',
+      rejected: 'Rejected',
+      spam: 'Spam',
+    },
+    targetType: {
+      product: 'Product',
+      review: 'Review',
+      customer: 'Customer',
+      category: 'Category',
+      unknown: 'Unknown',
+    },
+    reportStatus: {
+      open: 'Open',
+      resolved: 'Resolved',
+      dismissed: 'Dismissed',
+    },
+  },
   adminOrders: {
     back: 'Back to orders',
     search: 'Search by order number, name, email, or phone…',
@@ -1542,6 +1613,7 @@ export const en: Translations = {
       orders: 'Orders',
       customers: 'Customers',
       transactions: 'Transactions',
+      moderation: 'Reviews & Moderation',
       reviews: 'Reviews',
       reports: 'Reports',
       content: 'Content',
@@ -1581,6 +1653,9 @@ export const en: Translations = {
       orderDetail: { title: 'Order', description: 'Order details and status' },
       customers: { title: 'Customers', description: 'Everyone who has placed an order' },
       customerDetail: { title: 'Customer', description: 'Customer profile, orders, and activity' },
+      moderation: { title: 'Reviews & Moderation', description: 'Review and moderate customer feedback' },
+      reviewDetail: { title: 'Review', description: 'Review details and moderation actions' },
+      reportsQueue: { title: 'Reports queue', description: 'Content reported by customers' },
       transactions: { title: 'Transactions', description: 'Payments, refunds, and fraud review' },
       media: { title: 'Media Library', description: 'Images and files for products and pages' },
       users: { title: 'Users', description: 'Admin team members and permissions' },