feat: 宇之然平台 v2.0 - 完整重构版

核心功能:
- 新增 JWT 认证系统，支持管理员登录/登出
- 前后端合并为单一 FastAPI 应用 (端口 8001)
- 系统概览页：6 个统计卡片，点击跳转筛选
- 选题管理页：批量操作 (刷新/创作/优化)，时间列展示
- 系统日志页：整合日志查看功能
- 用户管理页：管理员可创建/删除用户
- 移动端适配：响应式布局，底部导航栏
- 标题居中显示

技术改进:
- 添加 generated_at 字段支持创作时间记录
- 状态更新时自动同步 updated_at
- 所有 API 路由添加 JWT 认证保护
- 前端 authFetch 封装自动附加 Token
- 升级 FastAPI 0.136, Pydantic 2.13 等依赖

修复:
- 修复 API 500 错误 (数据库列缺失)
- 修复 formatRelativeTime 未定义错误
- 修复登录 Token 存储和自动附加逻辑

platform/backend/app/api/system.py

@@ -4,6 +4,7 @@ from sqlalchemy import func
 from datetime import datetime, date, timedelta
 from typing import Dict, Any, List, Optional
 from pathlib import Path
+from .auth import get_current_user
 import os
 import json
 from ..database import get_db
@@ -13,7 +14,7 @@ from ..core.generator import run_creator
 from ..core.optimizer import run_optimizer
 from ..core.sync import sync_topic_to_db, sync_all_topics
 
-PROJECT_ROOT = Path(__file__).resolve().parents[4]
+PROJECT_ROOT = Path(__file__).resolve().parents[1]
 if os.getenv('PROJECT_ROOT'):
     PROJECT_ROOT = Path(os.getenv('PROJECT_ROOT'))
 LOGS_DIR = PROJECT_ROOT / "automation" / "logs"
@@ -57,7 +58,7 @@ def get_status(db: Session = Depends(get_db)):
         last_optimization=last_opt.created_at if last_opt else None
     )
 
-@router.post("/generate/run")
+@router.post("/generate/run", dependencies=[Depends(get_current_user)])
 def trigger_generation(topic_id: str = None, db: Session = Depends(get_db)):
     """手动触发内容创作任务
     
@@ -76,7 +77,7 @@ def trigger_generation(topic_id: str = None, db: Session = Depends(get_db)):
     except Exception as e:
         raise HTTPException(status_code=500, detail=str(e))
 
-@router.post("/optimize/run")
+@router.post("/optimize/run", dependencies=[Depends(get_current_user)])
 def trigger_optimization(topic_ids: List[str] = None, db: Session = Depends(get_db)):
     """手动触发合规优化任务
     
@@ -101,7 +102,7 @@ def trigger_optimization(topic_ids: List[str] = None, db: Session = Depends(get_
     except Exception as e:
         raise HTTPException(status_code=500, detail=str(e))
 
-@router.get("/logs/{log_date}")
+@router.get("/logs/{log_date}", dependencies=[Depends(get_current_user)])
 def get_logs(log_date: str, log_type: str = "creator"):
     """读取日志文件内容，log_type: creator, optimizer, collector"""
     log_file = LOGS_DIR / f"{log_type}_{log_date}.log"
@@ -111,7 +112,7 @@ def get_logs(log_date: str, log_type: str = "creator"):
     lines = content.splitlines()[-100:] if log_type != "collector" else content.splitlines()[-200:]
     return {"log_date": log_date, "log_type": log_type, "content": lines}
 
-@router.get("/pipeline/status")
+@router.get("/pipeline/status", dependencies=[Depends(get_current_user)])
 def get_pipeline_status():
     """获取流水线各模块状态（最后运行时间和结果）"""
     try:
@@ -132,7 +133,6 @@ def get_pipeline_status():
             "collector": LOGS_DIR / f"collector_{date.today().isoformat()}.log",
             "creator": LOGS_DIR / f"creator_{date.today().isoformat()}.log",
             "optimizer": LOGS_DIR / f"optimizer_{date.today().isoformat()}.log",
-            "publisher": LOGS_DIR / f"publisher_{date.today()}.log"
         }
         
         pipeline_status = {}