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

backend/export_manager.py

@@ -3,12 +3,12 @@ InsightFlow Export Module - Phase 5
 支持导出知识图谱、项目报告、实体数据和转录文本
 """
 
+import base64
 import io
 import json
-import base64
-from datetime import datetime
-from typing import List, Dict, Any
 from dataclasses import dataclass
+from datetime import datetime
+from typing import Any
 
 try:
     import pandas as pd
@@ -20,9 +20,16 @@ except ImportError:
 try:
     from reportlab.lib import colors
     from reportlab.lib.pagesizes import A4
-    from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle
+    from reportlab.lib.styles import ParagraphStyle, getSampleStyleSheet
     from reportlab.lib.units import inch
-    from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, Table, TableStyle, PageBreak
+    from reportlab.platypus import (
+        PageBreak,
+        Paragraph,
+        SimpleDocTemplate,
+        Spacer,
+        Table,
+        TableStyle,
+    )
 
     REPORTLAB_AVAILABLE = True
 except ImportError:
@@ -35,9 +42,9 @@ class ExportEntity:
     name: str
     type: str
     definition: str
-    aliases: List[str]
+    aliases: list[str]
     mention_count: int
-    attributes: Dict[str, Any]
+    attributes: dict[str, Any]
 
 
 @dataclass
@@ -56,8 +63,8 @@ class ExportTranscript:
     name: str
     type: str  # audio/document
     content: str
-    segments: List[Dict]
-    entity_mentions: List[Dict]
+    segments: list[dict]
+    entity_mentions: list[dict]
 
 
 class ExportManager:
@@ -67,7 +74,7 @@ class ExportManager:
         self.db = db_manager
 
     def export_knowledge_graph_svg(
-        self, project_id: str, entities: List[ExportEntity], relations: List[ExportRelation]
+        self, project_id: str, entities: list[ExportEntity], relations: list[ExportRelation]
     ) -> str:
         """
         导出知识图谱为 SVG 格式
@@ -207,7 +214,7 @@ class ExportManager:
         return "\n".join(svg_parts)
 
     def export_knowledge_graph_png(
-        self, project_id: str, entities: List[ExportEntity], relations: List[ExportRelation]
+        self, project_id: str, entities: list[ExportEntity], relations: list[ExportRelation]
     ) -> bytes:
         """
         导出知识图谱为 PNG 格式
@@ -226,7 +233,7 @@ class ExportManager:
             svg_content = self.export_knowledge_graph_svg(project_id, entities, relations)
             return base64.b64encode(svg_content.encode("utf-8"))
 
-    def export_entities_excel(self, entities: List[ExportEntity]) -> bytes:
+    def export_entities_excel(self, entities: list[ExportEntity]) -> bytes:
         """
         导出实体数据为 Excel 格式
 
@@ -275,7 +282,7 @@ class ExportManager:
 
         return output.getvalue()
 
-    def export_entities_csv(self, entities: List[ExportEntity]) -> str:
+    def export_entities_csv(self, entities: list[ExportEntity]) -> str:
         """
         导出实体数据为 CSV 格式
 
@@ -306,7 +313,7 @@ class ExportManager:
 
         return output.getvalue()
 
-    def export_relations_csv(self, relations: List[ExportRelation]) -> str:
+    def export_relations_csv(self, relations: list[ExportRelation]) -> str:
         """
         导出关系数据为 CSV 格式
 
@@ -324,7 +331,7 @@ class ExportManager:
 
         return output.getvalue()
 
-    def export_transcript_markdown(self, transcript: ExportTranscript, entities_map: Dict[str, ExportEntity]) -> str:
+    def export_transcript_markdown(self, transcript: ExportTranscript, entities_map: dict[str, ExportEntity]) -> str:
         """
         导出转录文本为 Markdown 格式
 
@@ -387,9 +394,9 @@ class ExportManager:
         self,
         project_id: str,
         project_name: str,
-        entities: List[ExportEntity],
-        relations: List[ExportRelation],
-        transcripts: List[ExportTranscript],
+        entities: list[ExportEntity],
+        relations: list[ExportRelation],
+        transcripts: list[ExportTranscript],
         summary: str = "",
     ) -> bytes:
         """
@@ -529,9 +536,9 @@ class ExportManager:
         self,
         project_id: str,
         project_name: str,
-        entities: List[ExportEntity],
-        relations: List[ExportRelation],
-        transcripts: List[ExportTranscript],
+        entities: list[ExportEntity],
+        relations: list[ExportRelation],
+        transcripts: list[ExportTranscript],
     ) -> str:
         """
         导出完整项目数据为 JSON 格式