fix: add server.py placeholder to fix serve startup

src/mcp_familywall/server.py

@@ -0,0 +1,17 @@
+"""MCP server for Family Wall.
+
+Tools (get_circles, get_lists, get_tasks) are implemented in Gruppe 2.
+"""
+
+from __future__ import annotations
+
+from mcp.server.fastmcp import FastMCP
+
+
+def create_server() -> FastMCP:
+    """Create and return the Family Wall MCP server.
+
+    Returns:
+        Configured FastMCP instance (no tools registered yet — see Gruppe 2).
+    """
+    return FastMCP("familywall")