feat(backend): 更新核心模块和文件处理

- 更新配置模块 (config.py)
- 更新数据库连接 (database.py)
- 更新主应用入口 (main.py)
- 更新数据模型 (models.py)
- 更新基础 Schema (base.py)
- 更新文件处理器 (docx, excel, pdf)
- 更新 Dockerfile

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/app/services/file_processor/docx_processor.py

@@ -1,8 +1,9 @@
 """
 DOCX Text Extractor
 """
+import asyncio
+from typing import Dict
 from docx import Document
-from typing import Dict, List
 
 
 class DOCXProcessor:
@@ -26,6 +27,12 @@ class DOCXProcessor:
 
         return "\n\n".join(text_parts)
 
+    async def extract_text_async(self, file_path: str) -> str:
+        """Extract all text from DOCX asynchronously"""
+        return await asyncio.get_event_loop().run_in_executor(
+            None, self.extract_text, file_path
+        )
+
     def extract_with_metadata(self, file_path: str) -> Dict:
         """Extract text with DOCX metadata"""
         doc = Document(file_path)
@@ -46,8 +53,14 @@ class DOCXProcessor:
 
         return result
 
+    async def extract_with_metadata_async(self, file_path: str) -> Dict:
+        """Extract with metadata asynchronously"""
+        return await asyncio.get_event_loop().run_in_executor(
+            None, self.extract_with_metadata, file_path
+        )
 
-def process_docx(file_path: str) -> str:
+
+async def process_docx(file_path: str) -> str:
     """Process DOCX file and return text"""
     processor = DOCXProcessor()
-    return processor.extract_text(file_path)
+    return await processor.extract_text_async(file_path)