Add birdcage-mcp FastMCP server for satellite dish control

34 tools (connection, movement, signal, system, satellite, console),
5 resources, 3 prompts. Backed by DemoDevice for offline testing.
46 tests passing against the demo backend via run_server_async.

mcp/tests/test_connection.py

@@ -0,0 +1,29 @@
+"""Tests for connection tools (connect, disconnect, status)."""
+
+import pytest
+from conftest import parse_result
+from fastmcp import Client
+
+
+@pytest.mark.anyio
+async def test_status_shows_connected(mcp_client: Client):
+    result = await mcp_client.call_tool("status", {})
+    data = parse_result(result)
+    assert data["connected"] is True
+    assert data["demo_mode"] is True
+    assert data["firmware"] == "g2"
+
+
+@pytest.mark.anyio
+async def test_connect_demo_noop(mcp_client: Client):
+    result = await mcp_client.call_tool("connect", {})
+    data = parse_result(result)
+    assert data["mode"] == "demo"
+    assert data["status"] == "connected"
+
+
+@pytest.mark.anyio
+async def test_disconnect_demo_noop(mcp_client: Client):
+    result = await mcp_client.call_tool("disconnect", {})
+    data = parse_result(result)
+    assert data["status"] == "demo"