feat: 完成布局优化 - 操作列固定、批量按钮自适应、分类标签带数量

优化内容:
1. 表格布局:
   - 使用 calc(100vw - 160px) 确保表格不超出视口
   - 操作列 fixed='right' 固定在右侧，宽度 300px
   - 按钮 3 个后自动换行 (max-width: 200px)
   - 恢复合理列宽，不再过度压缩

2. 批量操作区域:
   - 容器改为 inline-block，宽度自适应按钮内容
   - 背景宽度与按钮总宽度匹配

3. 分类标签:
   - 显示数量 (如 '待处理 (20)')
   - 点击切换筛选，去掉误导的 'X' 图标

4. 删除功能:
   - 操作列增加删除按钮
   - 删除前弹出确认对话框

5. 系统日志:
   - 修复后端日志路径 (parents[4])
   - 404 时显示友好提示

6. 其他:
   - 左侧菜单宽度 160px
   - 所有功能保留 (登录、用户管理、批量操作等)

platform/backend/app/initial_data.py

@@ -3,53 +3,85 @@ import os
 from datetime import datetime
 from pathlib import Path
 from .database import SessionLocal, init_db
-from .models import Topic
+from .models import Topic, User
+import bcrypt
 
 # 计算项目根目录（backend/app/initial_data.py -> 上升3层到 yu-zhi-ran）
-PROJECT_ROOT = Path(__file__).resolve().parents[3]
+PROJECT_ROOT = Path(__file__).resolve().parents[1]
 if os.getenv('PROJECT_ROOT'):
     PROJECT_ROOT = Path(os.getenv('PROJECT_ROOT'))
 TOPICS_FILE = PROJECT_ROOT / "automation" / "data" / "sustainability_topics.json"
 
-def import_topics_from_json():
+# 从环境变量读取管理员配置
+DEFAULT_ADMIN_USERNAME = os.getenv('DEFAULT_ADMIN_USERNAME', 'admin')
+DEFAULT_ADMIN_PASSWORD = os.getenv('DEFAULT_ADMIN_PASSWORD', 'admin123')
+
+def import_initial_data():
     db = SessionLocal()
     try:
-        if db.query(Topic).count() > 0:
-            print("数据库已有数据，跳过导入")
-            return
-        if not __import__('os').path.exists(TOPICS_FILE):
-            print(f"选题文件不存在: {TOPICS_FILE}")
-            return
-        topics = json.loads(open(TOPICS_FILE, encoding='utf-8').read())
-        for t in topics:
-            topic = Topic(
-                id=t['id'],
-                title=t['title'],
-                field=t['field'],
-                format=t.get('format'),
-                core_concept=t.get('core_concept'),
-                audience_pain=t.get('audience_pain'),
-                unique_angle=t.get('unique_angle'),
-                priority=t.get('priority'),
-                priority_score=t.get('priority_score', 0),
-                total_score=t.get('total_score'),
-                status=t.get('status', 'pending'),
-                cases=t.get('cases', []),
-                source_file=t.get('source_file'),
-                ready_at=datetime.strptime(t['ready_at'], '%Y-%m-%d').date() if t.get('ready_at') else None,
-                published_at=datetime.strptime(t['published_at'], '%Y-%m-%d').date() if t.get('published_at') else None,
-                compliance_score=t.get('compliance_score'),
-                platform_urls=t.get('platform_urls', {})
+        # 1. 导入选题数据
+        if db.query(Topic).count() == 0:
+            if __import__('os').path.exists(TOPICS_FILE):
+                topics = json.loads(open(TOPICS_FILE, encoding='utf-8').read())
+                # 去重：保留每个 ID 最后出现的记录
+                seen = {}
+                for t in topics:
+                    seen[t['id']] = t
+                unique_topics = list(seen.values())
+                for t in unique_topics:
+                    topic = Topic(
+                        id=t['id'],
+                        title=t['title'],
+                        field=t['field'],
+                        format=t.get('format'),
+                        core_concept=t.get('core_concept'),
+                        audience_pain=t.get('audience_pain'),
+                        unique_angle=t.get('unique_angle'),
+                        priority=t.get('priority'),
+                        priority_score=t.get('priority_score', 0),
+                        total_score=t.get('total_score'),
+                        status=t.get('status', 'pending'),
+                        cases=t.get('cases', []),
+                        source_file=t.get('source_file'),
+                        ready_at=datetime.strptime(t['ready_at'], '%Y-%m-%d').date() if t.get('ready_at') else None,
+                        published_at=datetime.strptime(t['published_at'], '%Y-%m-%d').date() if t.get('published_at') else None,
+                        compliance_score=t.get('compliance_score'),
+                        platform_urls=t.get('platform_urls', {})
+                    )
+                    db.add(topic)
+                db.commit()
+                print(f"✅ 导入 {len(unique_topics)} 个选题到数据库（去重后）")
+            else:
+                print(f"⚠️ 选题文件不存在: {TOPICS_FILE}")
+        else:
+            print("数据库已有选题数据，跳过导入")
+
+        # 2. 创建默认管理员用户（bcrypt 哈希）
+        admin_exists = db.query(User).filter(User.username == DEFAULT_ADMIN_USERNAME).first()
+        if not admin_exists:
+            hashed = bcrypt.hashpw(DEFAULT_ADMIN_PASSWORD.encode('utf-8'), bcrypt.gensalt())
+            admin = User(
+                username=DEFAULT_ADMIN_USERNAME,
+                password_hash=hashed.decode('utf-8'),
+                role="admin"
             )
-            db.add(topic)
-        db.commit()
-        print(f"✅ 导入 {len(topics)} 个选题到数据库")
+            db.add(admin)
+            db.commit()
+            print(f"✅ 创建默认管理员: {DEFAULT_ADMIN_USERNAME}")
+        else:
+            # 如果管理员已存在但密码为空，更新为默认密码的哈希
+            if not admin_exists.password_hash:
+                hashed = bcrypt.hashpw(DEFAULT_ADMIN_PASSWORD.encode('utf-8'), bcrypt.gensalt())
+                admin_exists.password_hash = hashed.decode('utf-8')
+                db.commit()
+                print(f"✅ 更新管理员密码")
+            print(f"管理员已存在: {DEFAULT_ADMIN_USERNAME}")
     except Exception as e:
-        print(f"导入失败: {e}")
+        print(f"初始化失败: {e}")
         db.rollback()
     finally:
         db.close()
 
 if __name__ == "__main__":
     init_db()
-    import_topics_from_json()
+    import_initial_data()