chore: adjust dir structure

src/langbot/pkg/entity/persistence/mcp.py

@@ -0,0 +1,20 @@
+import sqlalchemy
+
+from .base import Base
+
+
+class MCPServer(Base):
+    __tablename__ = 'mcp_servers'
+
+    uuid = sqlalchemy.Column(sqlalchemy.String(255), primary_key=True, unique=True)
+    name = sqlalchemy.Column(sqlalchemy.String(255), nullable=False)
+    enable = sqlalchemy.Column(sqlalchemy.Boolean, nullable=False, default=False)
+    mode = sqlalchemy.Column(sqlalchemy.String(255), nullable=False)  # stdio, sse
+    extra_args = sqlalchemy.Column(sqlalchemy.JSON, nullable=False, default={})
+    created_at = sqlalchemy.Column(sqlalchemy.DateTime, nullable=False, server_default=sqlalchemy.func.now())
+    updated_at = sqlalchemy.Column(
+        sqlalchemy.DateTime,
+        nullable=False,
+        server_default=sqlalchemy.func.now(),
+        onupdate=sqlalchemy.func.now(),
+    )