🐱readme，结构更新

marshoai/models.py

@@ -0,0 +1,47 @@
+from marshoai.util import *
+
+class MarshoContext:
+    """
+    Marsho 的上下文类
+    """
+    def __init__(self):
+        self.contents = {
+            "private": {},
+            "non-private": {}
+        }
+
+    def _get_target_dict(self, is_private):
+        return self.contents["private"] if is_private else self.contents["non-private"]
+
+    def append(self, content, target_id: str, is_private: bool):
+        """
+        往上下文中添加消息
+        """
+        target_dict = self._get_target_dict(is_private)
+        if target_id not in target_dict:
+            target_dict[target_id] = []
+        target_dict[target_id].append(content)
+
+    def set_context(self, contexts, target_id: str, is_private: bool):
+        """
+        设置上下文
+        """
+        target_dict = self._get_target_dict(is_private)
+        target_dict[target_id] = contexts
+
+    def reset(self, target_id: str, is_private: bool):
+        """
+        重置上下文
+        """
+        target_dict = self._get_target_dict(is_private)
+        target_dict[target_id].clear()
+
+    def build(self, target_id: str, is_private: bool) -> list:
+        """
+        构建返回的上下文，其中包括系统消息
+        """
+        spell = get_prompt()
+        target_dict = self._get_target_dict(is_private)
+        if target_id not in target_dict:
+            target_dict[target_id] = []
+        return [spell] + target_dict[target_id]