Add microservices, web UI, and replay tooling

tests/unit/test_api_auth.py

@@ -0,0 +1,24 @@
+from __future__ import annotations
+
+from fastapi.testclient import TestClient
+
+from services.api.app import app
+
+
+def test_register_and_login() -> None:
+    with TestClient(app) as client:
+        response = client.post("/api/auth/register", json={"username": "alice", "password": "secret"})
+        assert response.status_code == 200
+        token = response.json().get("token")
+        assert token
+
+        response = client.post("/api/auth/login", json={"username": "alice", "password": "secret"})
+        assert response.status_code == 200
+
+
+def test_register_duplicate() -> None:
+    with TestClient(app) as client:
+        response = client.post("/api/auth/register", json={"username": "bob", "password": "secret"})
+        assert response.status_code == 200
+        response = client.post("/api/auth/register", json={"username": "bob", "password": "secret"})
+        assert response.status_code == 400