fix: pass tags as native arrays not JSON strings in data migration

PostgreSQL text[] columns require native array values, not JSON strings.
Parse string tags from Directus and pass as JS arrays directly.

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

packages/backend/src/scripts/data-migration.ts

@@ -126,7 +126,7 @@ async function migrateUsers() {
       if (tagsRes.rows[0]?.tags) {
         tags = Array.isArray(tagsRes.rows[0].tags)
           ? tagsRes.rows[0].tags
-          : JSON.parse(tagsRes.rows[0].tags || "[]");
+          : JSON.parse(String(tagsRes.rows[0].tags || "[]"));
       }
     } catch {}
 
@@ -144,7 +144,7 @@ async function migrateUsers() {
         user.artist_name,
         user.slug,
         user.description,
-        JSON.stringify(tags),
+        tags,
         role,
         user.avatar,
         true,
@@ -203,7 +203,7 @@ async function migrateArticles() {
         article.excerpt,
         article.content,
         article.image,
-        Array.isArray(article.tags) ? JSON.stringify(article.tags) : article.tags,
+        Array.isArray(article.tags) ? article.tags : JSON.parse(String(article.tags || "[]")),
         article.publish_date,
         article.author,
         article.category,
@@ -240,7 +240,7 @@ async function migrateVideos() {
         video.description,
         video.image,
         video.movie,
-        Array.isArray(video.tags) ? JSON.stringify(video.tags) : video.tags,
+        Array.isArray(video.tags) ? video.tags : JSON.parse(String(video.tags || "[]")),
         video.upload_date,
         video.premium,
         video.featured,
@@ -354,7 +354,7 @@ async function migrateRecordings() {
           : JSON.stringify(recording.device_info),
         recording.user_id,
         recording.status,
-        Array.isArray(recording.tags) ? JSON.stringify(recording.tags) : recording.tags,
+        Array.isArray(recording.tags) ? recording.tags : JSON.parse(String(recording.tags || "[]")),
         recording.linked_video,
         recording.public,
         recording.original_recording_id,