test(remote): add unit + e2e suite for remote-services subsystem

Covers RemoteClient/RemoteService, REST routes, handlers, SessionStore, InputBridge, DownloadQueueManager, errors, compression, and serve CLI. E2e tier opts in via --live and can auto-spawn its own serve.

tests/remote/e2e/test_live_health.py

@@ -0,0 +1,37 @@
+"""E2E: basic reachability against a running `unshackle serve`."""
+
+from __future__ import annotations
+
+import pytest
+
+pytestmark = [pytest.mark.live]
+
+
+def test_health_endpoint(http_session, server_url: str) -> None:
+    r = http_session.get(f"{server_url}/api/health", timeout=10)
+    assert r.status_code == 200, r.text
+    body = r.json()
+    assert body["status"] == "ok"
+    assert "version" in body
+    assert "update_check" in body
+
+
+def test_services_endpoint(http_session, server_url: str) -> None:
+    r = http_session.get(f"{server_url}/api/services", timeout=10)
+    assert r.status_code == 200, r.text
+    body = r.json()
+    assert "services" in body
+    assert isinstance(body["services"], list)
+
+
+def test_health_does_not_require_secret_key(server_url: str) -> None:
+    """Health bypasses auth even when the server runs with a key."""
+    import requests
+
+    r = requests.get(f"{server_url}/api/health", timeout=10)
+    assert r.status_code == 200
+
+
+def test_unknown_route_returns_404(http_session, server_url: str) -> None:
+    r = http_session.get(f"{server_url}/api/this-does-not-exist", timeout=10)
+    assert r.status_code in (404, 405)