fix: auto-fix code issues (cron)

- 修复重复导入/字段 (llm_client.py 中的重复注释)
- 修复PEP8格式问题 (E501行长度超过100字符)
- 修复多行SQL语句和字符串格式化
- 修复f-string过长问题

涉及文件:
- backend/developer_ecosystem_manager.py
- backend/document_processor.py
- backend/enterprise_manager.py
- backend/export_manager.py
- backend/growth_manager.py
- backend/llm_client.py
- backend/localization_manager.py
- backend/main.py
- backend/neo4j_manager.py
- backend/ops_manager.py
- backend/performance_manager.py
- backend/plugin_manager.py
- backend/search_manager.py
- backend/security_manager.py
- backend/subscription_manager.py
- backend/tenant_manager.py
- backend/test_phase8_task6.py
- backend/test_phase8_task8.py
- backend/tingwu_client.py
- backend/workflow_manager.py

backend/main.py

@@ -1250,8 +1250,10 @@ def extract_entities_with_llm(text: str) -> tuple[list[dict], list[dict]]:
 文本：{text[:3000]}
 
 要求：
-1. entities: 每个实体包含 name(名称), type(类型: PROJECT/TECH/PERSON/ORG/OTHER), definition(一句话定义)
-2. relations: 每个关系包含 source(源实体名), target(目标实体名), type(关系类型: belongs_to/works_with/depends_on/mentions/related)
+1. entities: 每个实体包含 name(名称), type(类型: PROJECT/TECH/PERSON/ORG/OTHER),
+   definition(一句话定义)
+2. relations: 每个关系包含 source(源实体名), target(目标实体名),
+   type(关系类型: belongs_to/works_with/depends_on/mentions/related)
 3. 只返回 JSON 对象，格式: {{"entities": [...], "relations": [...]}}
 
 示例：
@@ -2053,7 +2055,8 @@ async def agent_suggest(project_id: str, _=Depends(verify_api_key)):
 2. 建议的操作（如合并相似实体、补充定义等）
 3. 值得关注的关键信息
 
-返回 JSON 格式：{{"suggestions": [{{"type": "insight|action", "title": "...", "description": "..."}}]}}"""
+返回 JSON 格式：{{"suggestions": [{{"type": "insight|action", "title": "...",
+"description": "..."}}]}}"""
 
     messages = [ChatMessage(role="user", content=prompt)]
     content = await llm.chat(messages, temperature=0.3)
@@ -2593,7 +2596,8 @@ async def set_entity_attribute_endpoint(
         # 记录历史
         conn.execute(
             """INSERT INTO attribute_history
-               (id, entity_id, attribute_name, old_value, new_value, changed_by, changed_at, change_reason)
+               (id, entity_id, attribute_name, old_value, new_value,
+                changed_by, changed_at, change_reason)
                VALUES (?, ?, ?, ?, ?, ?, ?, ?)""",
             (
                 str(uuid.uuid4())[:UUID_LENGTH],
@@ -2628,7 +2632,8 @@ async def set_entity_attribute_endpoint(
         # 记录历史
         conn.execute(
             """INSERT INTO attribute_history
-               (id, entity_id, attribute_name, old_value, new_value, changed_by, changed_at, change_reason)
+               (id, entity_id, attribute_name, old_value, new_value,
+                changed_by, changed_at, change_reason)
                VALUES (?, ?, ?, ?, ?, ?, ?, ?)""",
             (
                 str(uuid.uuid4())[:UUID_LENGTH],
@@ -3292,7 +3297,9 @@ async def export_transcript_markdown_endpoint(transcript_id: str, _=Depends(veri
         io.BytesIO(markdown_content.encode("utf-8")),
         media_type="text/markdown",
         headers={
-            "Content-Disposition": f"attachment; filename=insightflow-transcript-{transcript_id}.md",
+            "Content-Disposition": (
+                f"attachment; filename=insightflow-transcript-{transcript_id}.md"
+            ),
         },
     )
 
@@ -3395,7 +3402,9 @@ async def neo4j_sync_project(request: Neo4jSyncRequest, _=Depends(verify_api_key
         "project_id": request.project_id,
         "entities_synced": len(entities_data),
         "relations_synced": len(relations_data),
-        "message": f"Synced {len(entities_data)} entities and {len(relations_data)} relations to Neo4j",
+        "message": (
+            f"Synced {len(entities_data)} entities and {len(relations_data)} relations to Neo4j"
+        ),
     }
 
 
@@ -4516,7 +4525,8 @@ async def upload_video_endpoint(
     for frame in result.frames:
         conn.execute(
             """INSERT INTO video_frames
-               (id, video_id, frame_number, timestamp, image_url, ocr_text, extracted_entities, created_at)
+               (id, video_id, frame_number, timestamp, image_url, ocr_text,
+                extracted_entities, created_at)
                VALUES (?, ?, ?, ?, ?, ?, ?, ?)""",
             (
                 frame.id,
@@ -4560,7 +4570,8 @@ async def upload_video_endpoint(
             conn = db.get_conn()
             conn.execute(
                 """INSERT OR REPLACE INTO multimodal_mentions
-                   (id, project_id, entity_id, modality, source_id, source_type, text_snippet, confidence, created_at)
+                   (id, project_id, entity_id, modality, source_id, source_type,
+                    text_snippet, confidence, created_at)
                    VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)""",
                 (
                     str(uuid.uuid4())[:UUID_LENGTH],
@@ -4718,7 +4729,8 @@ async def upload_image_endpoint(
         conn = db.get_conn()
         conn.execute(
             """INSERT OR REPLACE INTO multimodal_mentions
-               (id, project_id, entity_id, modality, source_id, source_type, text_snippet, confidence, created_at)
+               (id, project_id, entity_id, modality, source_id, source_type,
+                text_snippet, confidence, created_at)
                VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)""",
             (
                 str(uuid.uuid4())[:UUID_LENGTH],
@@ -4925,7 +4937,8 @@ async def align_multimodal_entities_endpoint(
     for link in links:
         conn.execute(
             """INSERT OR REPLACE INTO multimodal_entity_links
-               (id, entity_id, linked_entity_id, link_type, confidence, evidence, modalities, created_at)
+               (id, entity_id, linked_entity_id, link_type, confidence,
+                evidence, modalities, created_at)
                VALUES (?, ?, ?, ?, ?, ?, ?, ?)""",
             (
                 link.id,
@@ -5012,7 +5025,8 @@ async def get_multimodal_stats_endpoint(project_id: str, _=Depends(verify_api_ke
     modality_dist = {}
     for modality in ["audio", "video", "image", "document"]:
         count = conn.execute(
-            "SELECT COUNT(*) as count FROM multimodal_mentions WHERE project_id = ? AND modality = ?",
+            """SELECT COUNT(*) as count FROM multimodal_mentions
+            WHERE project_id = ? AND modality = ?""",
             (project_id, modality),
         ).fetchone()["count"]
         modality_dist[modality] = count
@@ -5300,7 +5314,10 @@ class PluginCreate(BaseModel):
     name: str = Field(..., description="插件名称")
     plugin_type: str = Field(
         ...,
-        description="插件类型: chrome_extension, feishu_bot, dingtalk_bot, zapier, make, webdav, custom",
+        description=(
+            "插件类型: chrome_extension, feishu_bot, dingtalk_bot, "
+            "zapier, make, webdav, custom"
+        ),
     )
     project_id: str = Field(..., description="关联项目ID")
     config: dict = Field(default_factory=dict, description="插件配置")