Implement real-time profile retrieval and saving in simulation API

- Added a new endpoint to retrieve real-time agent profiles during simulation, allowing users to monitor progress without going through the SimulationManager.
- Enhanced the profile generation process to support real-time saving of generated profiles to specified file formats (JSON for Reddit, CSV for Twitter).
- Updated the simulation configuration generator to assign appropriate agents to initial posts based on their types, improving the relevance of generated content.
- Improved error handling and logging for better traceability during profile generation and retrieval processes.

backend/app/services/oasis_profile_generator.py

@@ -853,7 +853,9 @@ class OasisProfileGenerator:
         use_llm: bool = True,
         progress_callback: Optional[callable] = None,
         graph_id: Optional[str] = None,
-        parallel_count: int = 5
+        parallel_count: int = 5,
+        realtime_output_path: Optional[str] = None,
+        output_platform: str = "reddit"
     ) -> List[OasisAgentProfile]:
         """
         批量从实体生成Agent Profile（支持并行生成）
@@ -864,6 +866,8 @@ class OasisProfileGenerator:
             progress_callback: 进度回调函数 (current, total, message)
             graph_id: 图谱ID，用于Zep检索获取更丰富上下文
             parallel_count: 并行生成数量，默认5
+            realtime_output_path: 实时写入的文件路径（如果提供，每生成一个就写入一次）
+            output_platform: 输出平台格式 ("reddit" 或 "twitter")
             
         Returns:
             Agent Profile列表
@@ -880,6 +884,37 @@ class OasisProfileGenerator:
         completed_count = [0]  # 使用列表以便在闭包中修改
         lock = Lock()
         
+        # 实时写入文件的辅助函数
+        def save_profiles_realtime():
+            """实时保存已生成的 profiles 到文件"""
+            if not realtime_output_path:
+                return
+            
+            with lock:
+                # 过滤出已生成的 profiles
+                existing_profiles = [p for p in profiles if p is not None]
+                if not existing_profiles:
+                    return
+                
+                try:
+                    if output_platform == "reddit":
+                        # Reddit JSON 格式
+                        profiles_data = [p.to_reddit_format() for p in existing_profiles]
+                        with open(realtime_output_path, 'w', encoding='utf-8') as f:
+                            json.dump(profiles_data, f, ensure_ascii=False, indent=2)
+                    else:
+                        # Twitter CSV 格式
+                        import csv
+                        profiles_data = [p.to_twitter_format() for p in existing_profiles]
+                        if profiles_data:
+                            fieldnames = list(profiles_data[0].keys())
+                            with open(realtime_output_path, 'w', encoding='utf-8', newline='') as f:
+                                writer = csv.DictWriter(f, fieldnames=fieldnames)
+                                writer.writeheader()
+                                writer.writerows(profiles_data)
+                except Exception as e:
+                    logger.warning(f"实时保存 profiles 失败: {e}")
+        
         def generate_single_profile(idx: int, entity: EntityNode) -> tuple:
             """生成单个profile的工作函数"""
             entity_type = entity.get_entity_type() or "Entity"
@@ -936,6 +971,9 @@ class OasisProfileGenerator:
                         completed_count[0] += 1
                         current = completed_count[0]
                     
+                    # 实时写入文件
+                    save_profiles_realtime()
+                    
                     if progress_callback:
                         progress_callback(
                             current, 
@@ -961,6 +999,8 @@ class OasisProfileGenerator:
                         source_entity_uuid=entity.uuid,
                         source_entity_type=entity_type,
                     )
+                    # 实时写入文件（即使是备用人设）
+                    save_profiles_realtime()
         
         print(f"\n{'='*60}")
         print(f"人设生成完成！共生成 {len([p for p in profiles if p])} 个Agent")