fix(import): use sablog_articles.keywords for tags instead of sablog_tags.aids

app/Console/Commands/SablogImport.php

@@ -318,24 +318,38 @@ class SablogImport extends Command
     {
         $legacyMap = [];
         $count = 0;
-        foreach ($this->rows('tags') as $row) {
-            $tagName = trim($row['tag']);
-            if (! $tagName) {
+
+        // 正确的标签来源：sablog_articles.keywords（每篇文章的关键词字段）
+        // 而不是 sablog_tags.aids（那个映射是错的/过时的）
+        foreach ($this->rows('articles') as $row) {
+            $keywords = trim((string) ($row['keywords'] ?? ''));
+            if ($keywords === '') {
                 continue;
             }
 
-            $tag = Tag::query()->where('name', $tagName)->where('type', 'post')->first();
-            if (! $tag) {
-                $tag = new Tag(['name' => $tagName, 'type' => 'post']);
-                $tag->slug = SlugGenerator::make($tagName, 'tags', 'slug', fallback: 'tag-'.crc32($tagName));
-                $tag->save();
+            $postId = (int) $row['articleid'];
+            $post = Post::find($postId);
+            if (! $post) {
+                continue;
             }
 
-            $legacyMap[(int) $row['tagid']] = $tag->id;
+            // keywords 是逗号分隔的标签名
+            $tagNames = array_filter(array_map('trim', explode(',', $keywords)));
+            foreach ($tagNames as $tagName) {
+                if ($tagName === '') {
+                    continue;
+                }
 
-            foreach (explode(',', (string) $row['aids']) as $aid) {
-                $post = Post::find((int) trim($aid));
-                if ($post && ! $post->tags()->where('tags.id', $tag->id)->exists()) {
+                $tag = Tag::query()->where('name', $tagName)->where('type', 'post')->first();
+                if (! $tag) {
+                    $tag = new Tag(['name' => $tagName, 'type' => 'post']);
+                    $tag->slug = SlugGenerator::make($tagName, 'tags', 'slug', fallback: 'tag-'.crc32($tagName));
+                    $tag->save();
+                }
+
+                $legacyMap[$tagName] = $tag->id;
+
+                if (! $post->tags()->where('tags.id', $tag->id)->exists()) {
                     $post->tags()->attach($tag->id);
                 }
             }