feat: 数据源统一与前端预览修复

=== 后端核心 ===
- db_helper: 统一数据库访问抽象层
- system.py API:
  * 参数绑定修复: 使用 Body(embed=True) 接收 JSON
  * 添加请求日志记录
- sync.py: 仅导出 DB→JSON（备份）

=== 合规与流水线 ===
- compliance_checker: 标签检测优化（仅检查容器，避免正文误判）
- 所有脚本（creator/collector/writer/outline/research等）统一使用数据库

=== 前端改版 ===
- topics.html:
  * 创作/优化 API 路径修正
  * 预览弹窗重设计：多平台并行加载、富文本显示、单复制按钮
  * 状态中文映射（getStatusLabel）
  * 认证检查
- 所有 HTML 静态资源路径修复（移除 /static 前缀）

=== 数据一致性 ===
- 数据库状态统一为英文（pending/review/ready/published）
- 前端显示中文化映射

已测试 A03 流水线完整通过。

scripts/adjust_priority.py

@@ -1,10 +1,73 @@
 #!/usr/bin/env python3
-import json
-data = json.load(open('automation/data/sustainability_topics.json', 'r', encoding='utf-8'))
-for t in data:
-    if t['id'] == 'D01':
-        t['priority_score'] = 11
-    elif t['id'] == 'B05':
-        t['priority_score'] = 10
-json.dump(data, open('automation/data/sustainability_topics.json', 'w', encoding='utf-8'), ensure_ascii=False, indent=2)
-print('优先级调整完成：D01=11, B05=10')
+"""
+调整选题优先级（数据库 + JSON 备份）
+"""
+
+import sys
+from pathlib import Path
+
+PROJECT_ROOT = Path(__file__).parent.parent
+sys.path.insert(0, str(PROJECT_ROOT))
+
+try:
+    from db_helper import get_topic_by_id, update_topic_status
+    from app.database import SessionLocal
+    from app.models import Topic as DBTopic
+    HAVE_DB = True
+except ImportError:
+    HAVE_DB = False
+    print("Warning: db_helper not available, will only update JSON")
+
+DATA_DIR = PROJECT_ROOT / "automation" / "data"
+TOPICS_FILE = DATA_DIR / "sustainability_topics.json"
+
+def adjust_json_priority(adjustments):
+    try:
+        with open(TOPICS_FILE, 'r', encoding='utf-8') as f:
+            topics = json.load(f)
+    except:
+        topics = []
+    updated = []
+    for t in topics:
+        if t['id'] in adjustments:
+            old = t.get('priority_score', 0)
+            t['priority_score'] = adjustments[t['id']]
+            updated.append(f"{t['id']}: {old} -> {adjustments[t['id']]}")
+    with open(TOPICS_FILE, 'w', encoding='utf-8') as f:
+        json.dump(topics, f, ensure_ascii=False, indent=2)
+    return updated
+
+def adjust_db_priority(adjustments):
+    if not HAVE_DB:
+        return []
+    updated = []
+    db = SessionLocal()
+    try:
+        for tid, new_score in adjustments.items():
+            topic = db.query(DBTopic).filter(DBTopic.id == tid).first()
+            if topic:
+                topic.priority_score = new_score
+                topic.updated_at = datetime.now()
+                updated.append(f"{tid}: {topic.priority_score} -> {new_score}")
+        db.commit()
+    finally:
+        db.close()
+    return updated
+
+def main():
+    # 定义需要调整的优先级：ID -> 新分数
+    adjustments = {
+        'D01': 11,
+        'B05': 10
+    }
+    print("调整优先级...")
+    db_updated = adjust_db_priority(adjustments) if HAVE_DB else []
+    if db_updated:
+        print("[DB] updated:", ', '.join(db_updated))
+    json_updated = adjust_json_priority(adjustments)
+    print("[JSON] updated:", ', '.join(json_updated))
+    print("完成")
+
+if __name__ == "__main__":
+    import json, datetime
+    main()