feat(blog): implement medical review gate for blog posts

- Added new fields to the Blog entity: sources, review_status, reviewer, reviewed_at, review_note, and topic_slug.
- Created API endpoints for reviewing blog posts: GET /api/v1/admin/blog/review-queue and POST /api/v1/admin/blog/{uuid}/review.
- Updated BlogController to handle review logic, including approval and rejection of posts.
- Introduced BlogReviewPage component for admin interface to manage blog reviews.
- Added migration to update the database schema for new fields.
- Implemented tests for review queue functionality and review decision handling.

src/Blog/Repository/BlogRepository.php

@@ -12,6 +12,33 @@ class BlogRepository extends ServiceEntityRepository
 
     public function findByUuid(string $uuid): ?Blog { return $this->findOneBy(['uuid' => $uuid]); }
     public function findBySlug(string $slug): ?Blog { return $this->findOneBy(['slug' => $slug]); }
+    public function findByTopicSlug(string $topicSlug): ?Blog { return $this->findOneBy(['topicSlug' => $topicSlug]); }
+
+    /**
+     * The admin review queue: posts awaiting a doctor's decision, newest first.
+     * @return Blog[]
+     */
+    public function findByReviewStatus(string $reviewStatus, int $page = 1, int $limit = 20): array
+    {
+        return $this->createQueryBuilder('b')
+            ->leftJoin('b.city', 'c')->addSelect('c')
+            ->leftJoin('b.reviewer', 'r')->addSelect('r')
+            ->where('b.reviewStatus = :rs')
+            ->setParameter('rs', $reviewStatus)
+            ->orderBy('b.createdAt', 'DESC')
+            ->setFirstResult(($page - 1) * $limit)
+            ->setMaxResults($limit)
+            ->getQuery()->getResult();
+    }
+
+    public function countByReviewStatus(string $reviewStatus): int
+    {
+        return (int) $this->createQueryBuilder('b')
+            ->select('COUNT(b.id)')
+            ->where('b.reviewStatus = :rs')
+            ->setParameter('rs', $reviewStatus)
+            ->getQuery()->getSingleScalarResult();
+    }
 
     /** @return Blog[] published, newest first */
     public function findPublished(int $page = 1, int $limit = 20, ?string $tag = null, ?int $cityId = null): array