feat: 内容数据迁移至数据库，合规审查全链路打通

- 文章 HTML 存储从文件系统迁移至 articles 表，删除 releases 目录
- 合规审查从 DB 读取 HTML，审查结果写回 DB，通过后自动推进至待发布
- 新增 todayCount 筛选按钮，与系统概览统计数据一致
- 全屏预览修复：提升 z-index 超过侧边栏，添加退出全屏/关闭按钮
- 统一 '优化' → '审查' 命名，消除前后端术语不一致
- 调度器创作完成后自动触发审查（生成 → 审查 → 待发布）
- 清理旧备份/调试文件、过期大纲和研究笔记

scripts/test_creator.py

@@ -1,19 +1,10 @@
 #!/usr/bin/env python3
 import sys
 from pathlib import Path
+sys.path.insert(0, str(Path(__file__).parent.parent))
+from db_helper import get_topic_by_id, get_topics_by_status
 
-PROJECT_ROOT = Path(__file__).parent.parent
-DATA_DIR = PROJECT_ROOT / "automation" / "data"
-topics_file = DATA_DIR / "sustainability_topics.json"
-
-print(f"Project root: {PROJECT_ROOT}")
-print(f"Looking for: {topics_file}")
-print(f"Exists: {topics_file.exists()}")
-
-if topics_file.exists():
-    import json
-    with open(topics_file, 'r', encoding='utf-8') as f:
-        topics = json.load(f)
-    print(f"Loaded {len(topics)} topics")
-    if topics:
-        print("First topic:", topics[0]['title'], f"score={topics[0]['priority_score']}, status={topics[0]['status']}")
+pending = get_topics_by_status('pending')
+print(f"待处理选题数: {len(pending)}")
+for t in pending[:3]:
+    print(f"  {t['id']}: {t['title'][:40]}, score={t['priority_score']}")