feat：生成器可用多消息模式

src/chat/replyer/maisaka_replyer_factory.py

@@ -0,0 +1,21 @@
+from typing import Type
+
+from src.config.config import global_config
+
+
+def get_maisaka_replyer_class() -> Type[object]:
+    """根据配置返回 Maisaka replyer 类。"""
+    generator_type = global_config.maisaka.replyer_generator_type
+    if generator_type == "multi":
+        from .maisaka_generator_multi import MaisakaReplyGenerator
+
+        return MaisakaReplyGenerator
+
+    from .maisaka_generator import MaisakaReplyGenerator
+
+    return MaisakaReplyGenerator
+
+
+def get_maisaka_replyer_generator_type() -> str:
+    """返回当前配置的 Maisaka replyer 生成器类型。"""
+    return global_config.maisaka.replyer_generator_type