feat: scaffold meshnet monorepo

tests/test_smoke.py

@@ -0,0 +1,53 @@
+"""US-001 smoke test: gateway → single stub node → valid OpenAI-format response."""
+
+import json
+import urllib.request
+
+from meshnet_node.server import StubNodeServer
+from meshnet_gateway.server import GatewayServer
+
+
+def test_single_node_smoke():
+    node = StubNodeServer()
+    node_port = node.start()
+
+    gateway = GatewayServer(node_url=f"http://127.0.0.1:{node_port}")
+    gateway_port = gateway.start()
+
+    try:
+        payload = json.dumps({
+            "model": "stub-model",
+            "messages": [{"role": "user", "content": "hello"}],
+        }).encode()
+
+        req = urllib.request.Request(
+            f"http://127.0.0.1:{gateway_port}/v1/chat/completions",
+            data=payload,
+            headers={"Content-Type": "application/json"},
+            method="POST",
+        )
+
+        with urllib.request.urlopen(req) as resp:
+            assert resp.status == 200
+            assert resp.headers["Content-Type"] == "application/json"
+            body = json.loads(resp.read())
+
+        assert body["id"] == "chatcmpl-stub"
+        assert body["object"] == "chat.completion"
+        assert isinstance(body["created"], int)
+        assert body["model"] == "stub-model"
+        assert "choices" in body
+        assert len(body["choices"]) == 1
+        choice = body["choices"][0]
+        assert choice["index"] == 0
+        assert choice["message"]["role"] == "assistant"
+        assert choice["message"]["content"] == "stub response to: hello"
+        assert choice["finish_reason"] == "stop"
+        assert body["usage"] == {
+            "prompt_tokens": 0,
+            "completion_tokens": 0,
+            "total_tokens": 0,
+        }
+    finally:
+        gateway.stop()
+        node.stop()