fix: clean up temp directory PDF files

Fixed temp directory not being cleaned by:
- Updating schedule_clean.py to use correct path
- Adding PDF file cleanup in finally block

Resolves #56

Author: 14790897

backend/app.py

@@ -749,7 +749,9 @@ def replace_english_spaces(text):
                 conditional=True,
             )
         finally:
-            pass
+            # 清理生成的临时 PDF 文件
+            if temp_pdf_file_path is not None and os.path.exists(temp_pdf_file_path):
+                safe_remove_file(temp_pdf_file_path)
         #     if temp_pdf_file_path is not None:  # 检查变量是否已赋值
         #         for _ in range(5):  # 尝试5次
         #             try:

backend/schedule_clean.py

@@ -5,7 +5,7 @@
 import threading
 
 def clear_temp_dir():
-    temp_dir = '你的临时目录路径'
+    temp_dir = './temp'
     if os.path.exists(temp_dir):
         for filename in os.listdir(temp_dir):
             file_path = os.path.join(temp_dir, filename)