fix(article): recordRead 补设 articleId + 迁移回填老数据 NULL article_id

cfc-backend/src/main/java/com/etotem/cfc/config/DatabaseInitializer.java

@@ -11176,5 +11176,19 @@ log.info("迁移298: 已为无 openid 的 child 账号补齐 family_members 记
             // 列已存在，忽略
             log.warn("迁移313: octopus_effect_record.happened_at 列已存在或添加失败: {}", e.getMessage());
         }
+
+        // 迁移314: 回填 article_reading_records 表中 article_id 为 NULL 的老记录
+        // 通过 task 表关联恢复：record.task_id → task.source_type='article' → task.source_id
+        try {
+            int updated = jdbcTemplate.update(
+                    "UPDATE article_reading_records r " +
+                    "LEFT JOIN tasks t ON r.task_id = t.id AND t.source_type = 'article' " +
+                    "SET r.article_id = t.source_id " +
+                    "WHERE r.article_id IS NULL AND t.id IS NOT NULL AND t.source_id IS NOT NULL"
+            );
+            log.info("迁移314: 已回填 article_reading_records.article_id {} 条记录", updated);
+        } catch (Exception e) {
+            log.warn("迁移314: 回填 article_reading_records.article_id 失败: {}", e.getMessage());
+        }
     }
 }

cfc-backend/src/main/java/com/etotem/cfc/service/ArticleService.java

@@ -194,6 +194,7 @@ public class ArticleService {
 
         // 2. Save reading record
         ArticleReadingRecord record = new ArticleReadingRecord();
+        record.setArticleId(articleId);
         record.setUserId(userId);
         record.setChildId(memberId);
         record.setContent("");