fix(scheduler): 修复格式和代码风格问题，调整默认执行时间

- 规范了代码中的字符串引号统一使用双引号
- 调整了部分代码的参数换行和缩进格式
- 在load_dotenv调用中添加了缺失的空行
- 优化了日志打印字符串内引号使用一致性
- 修改主函数默认执行时间由15:30调整为09:00
- 修正字典取值和列表拼接中的引号使用，避免潜在错误
- 规范函数定义参数列表的格式，提高代码可读性

scripts/daily_scheduler.py

@@ -26,6 +26,7 @@ project_root = Path(__file__).parent.parent
 sys.path.insert(0, str(project_root))
 
 from dotenv import load_dotenv
+
 load_dotenv(project_root / ".env")
 
 from loguru import logger
@@ -64,13 +65,10 @@ def is_trading_day(date_str: str = None) -> bool:
 
         pro = ts.pro_api(token)
         df = pro.trade_cal(
-            exchange='SSE',
-            start_date=date_str,
-            end_date=date_str,
-            is_open='1'
+            exchange="SSE", start_date=date_str, end_date=date_str, is_open="1"
         )
 
-        is_open = len(df) > 0 and df.iloc[0]['is_open'] == 1
+        is_open = len(df) > 0 and df.iloc[0]["is_open"] == 1
         logger.info(f"日期 {date_str} 是否为交易日: {is_open}")
         return is_open
 
@@ -97,8 +95,10 @@ def run_strategy(config_path: str = "config/strategies/rotation.yaml") -> dict:
         cmd = [
             sys.executable,
             str(project_root / "scripts" / "run_rotation.py"),
-            "--config", config_path,
-            "--save-path", f"results/report_{datetime.now().strftime('%Y%m%d')}"
+            "--config",
+            config_path,
+            "--save-path",
+            f"results/report_{datetime.now().strftime('%Y%m%d')}",
         ]
 
         logger.info(f"执行命令: {' '.join(cmd)}")
@@ -109,7 +109,7 @@ def run_strategy(config_path: str = "config/strategies/rotation.yaml") -> dict:
             capture_output=True,
             text=True,
             cwd=project_root,
-            timeout=300  # 5分钟超时
+            timeout=300,  # 5分钟超时
         )
 
         if result.returncode != 0:
@@ -120,7 +120,7 @@ def run_strategy(config_path: str = "config/strategies/rotation.yaml") -> dict:
         logger.debug(result.stdout)
 
         # 查找生成的报告文件
-        report_date = datetime.now().strftime('%Y%m%d')
+        report_date = datetime.now().strftime("%Y%m%d")
         chart_path = project_root / "results" / f"report_{report_date}_chart.png"
 
         # 如果找不到带日期的，尝试默认路径
@@ -161,14 +161,14 @@ def send_report_to_dingtalk(chart_path: str, summary_text: str = "") -> bool:
             logger.error("钉钉未配置，无法发送")
             return False
 
-        today_str = datetime.now().strftime('%Y-%m-%d')
+        today_str = datetime.now().strftime("%Y-%m-%d")
 
         # 发送图文消息
         success = bot.send_image_via_oss(
             image_path=chart_path,
             title=f"ETF轮动策略日报 ({today_str})",
             text=summary_text or f"今日调仓信号已生成",
-            expire_days=7
+            expire_days=7,
         )
 
         if success:
@@ -183,7 +183,9 @@ def send_report_to_dingtalk(chart_path: str, summary_text: str = "") -> bool:
         return False
 
 
-def setup_schedule(target_time: str = "15:30", config_path: str = "config/strategies/rotation.yaml"):
+def setup_schedule(
+    target_time: str = "15:30", config_path: str = "config/strategies/rotation.yaml"
+):
     """
     设置定时任务
 
@@ -209,7 +211,7 @@ def daily_task(config_path: str = "config/strategies/rotation.yaml"):
     Args:
         config_path: 配置文件路径
     """
-    today_str = datetime.now().strftime('%Y-%m-%d')
+    today_str = datetime.now().strftime("%Y-%m-%d")
     logger.info(f"=" * 60)
     logger.info(f"开始执行每日任务: {today_str}")
     logger.info(f"=" * 60)
@@ -231,8 +233,7 @@ def daily_task(config_path: str = "config/strategies/rotation.yaml"):
     # 3. 发送报告
     if result.get("chart_path"):
         send_report_to_dingtalk(
-            chart_path=result["chart_path"],
-            summary_text="今日ETF轮动策略调仓信号"
+            chart_path=result["chart_path"], summary_text="今日ETF轮动策略调仓信号"
         )
     else:
         logger.warning("未找到报告图表")
@@ -256,7 +257,7 @@ def main():
     parser.add_argument(
         "--time",
         type=str,
-        default="15:30",
+        default="09:00",
         help="执行时间 (HH:MM)，默认15:30",
     )
     parser.add_argument(