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_search.py

@@ -0,0 +1,28 @@
+"""E2E: search endpoint per service."""
+
+from __future__ import annotations
+
+import pytest
+
+pytestmark = [pytest.mark.live, pytest.mark.slow]
+
+
+def test_search_returns_results(http_session, server_url: str, service_case) -> None:
+    service, conf = service_case
+    query = conf.get("search_query")
+    if not query:
+        pytest.skip(f"no search_query configured for {service}")
+
+    r = http_session.post(
+        f"{server_url}/api/search",
+        json={"service": service, "query": query},
+        timeout=120,
+    )
+    if r.status_code in (400, 401, 403):
+        pytest.skip(f"{service} search not available: {r.status_code} {r.text[:200]}")
+    if r.status_code == 502 and "not supported" in r.text.lower():
+        pytest.skip(f"{service} does not implement search")
+    assert r.status_code == 200, r.text
+    body = r.json()
+    assert "results" in body
+    assert isinstance(body["results"], list)