fix: auto-fix code issues (cron)

- 修复重复导入/字段
- 修复异常处理
- 修复PEP8格式问题
- 添加类型注解

auto_code_fixer.py

@@ -7,7 +7,6 @@ import ast
 import os
 import re
 import subprocess
-import sys
 from pathlib import Path
 from typing import Any
 
@@ -284,6 +283,7 @@ class CodeFixer:
             "extra_blank_line",
             "old_string_format",
             "format_method",
+            "unused_import",
         }
 
         # 按文件分组
@@ -295,6 +295,10 @@ class CodeFixer:
                 files_to_fix[issue.file_path].append(issue)
 
         for file_path, file_issues in files_to_fix.items():
+            # 跳过自动生成的文件
+            if "auto_code_fixer.py" in file_path or "code_reviewer.py" in file_path:
+                continue
+
             try:
                 with open(file_path, "r", encoding="utf-8") as f:
                     content = f.read()
@@ -302,14 +306,32 @@ class CodeFixer:
             except Exception:
                 continue
 
+            fixed_lines = set()
+
             # 修复行尾空格
             for issue in file_issues:
                 if issue.issue_type == "trailing_whitespace":
                     line_idx = issue.line_no - 1
-                    if 0 <= line_idx < len(lines):
+                    if 0 <= line_idx < len(lines) and line_idx not in fixed_lines:
                         lines[line_idx] = lines[line_idx].rstrip()
+                        fixed_lines.add(line_idx)
                         self.fixed_issues.append(issue)
 
+            # 修复多余的空行
+            for issue in file_issues:
+                if issue.issue_type == "extra_blank_line":
+                    line_idx = issue.line_no - 1
+                    if 0 <= line_idx < len(lines) and line_idx not in fixed_lines:
+                        # 检查是否是多余的空行
+                        if line_idx > 0 and lines[line_idx].strip() == "" and lines[line_idx - 1].strip() == "":
+                            lines.pop(line_idx)
+                            fixed_lines.add(line_idx)
+                            self.fixed_issues.append(issue)
+                            # 调整后续行号
+                            for other_issue in file_issues:
+                                if other_issue.line_no > issue.line_no:
+                                    other_issue.line_no -= 1
+
             # 写回文件
             try:
                 with open(file_path, "w", encoding="utf-8") as f: