docs: 重构为双语文档结构，添加人设图机制

- 拆分为 docs/(CN) 和 docs_en/(EN) 两个文件夹
- 主 README 索引对应语言文档
- 新增 persona.md (人设图机制详细说明)
- 文件重命名为英文名

ui/models/config.py

@@ -13,19 +13,29 @@ class AppConfig:
     api_key: str = ""
     model: str = "deepseek-chat"
     base_url: str = "https://api.deepseek.com"
+    persona_query_max: int = 1
+    persona_update_max: int = 1
+    task_query_max: int = 4
+    task_update_max: int = 2
+    memory_query_max: int = 20
+    memory_update_max: int = 10
 
     @classmethod
     def from_env(cls) -> "AppConfig":
-        """从环境变量加载配置"""
         return cls(
             api_key=os.getenv("DEEPSEEK_API_KEY", ""),
             model=os.getenv("MODEL_NAME", "deepseek-chat"),
             base_url=os.getenv("DEEPSEEK_BASE_URL", "https://api.deepseek.com"),
+            persona_query_max=int(os.getenv("PERSONA_QUERY_MAX", 1)),
+            persona_update_max=int(os.getenv("PERSONA_UPDATE_MAX", 1)),
+            task_query_max=int(os.getenv("TASK_QUERY_MAX", 4)),
+            task_update_max=int(os.getenv("TASK_UPDATE_MAX", 2)),
+            memory_query_max=int(os.getenv("MEMORY_QUERY_MAX", 20)),
+            memory_update_max=int(os.getenv("MEMORY_UPDATE_MAX", 10)),
         )
 
     @classmethod
     def from_file(cls, path: Path) -> "AppConfig":
-        """从文件加载配置"""
         if not path.exists():
             return cls()
 
@@ -36,10 +46,15 @@ class AppConfig:
             api_key=data.get("api_key", ""),
             model=data.get("model", "deepseek-chat"),
             base_url=data.get("base_url", "https://api.deepseek.com"),
+            persona_query_max=data.get("persona_query_max", 1),
+            persona_update_max=data.get("persona_update_max", 1),
+            task_query_max=data.get("task_query_max", 4),
+            task_update_max=data.get("task_update_max", 2),
+            memory_query_max=data.get("memory_query_max", 20),
+            memory_update_max=data.get("memory_update_max", 10),
         )
 
     def save(self, path: Path) -> None:
-        """保存配置到文件"""
         path.parent.mkdir(parents=True, exist_ok=True)
 
         with open(path, "w", encoding="utf-8") as f: