test: strengthen user-path coverage and CI gates (#5308)

tests/test_nanobot_facade.py

@@ -243,27 +243,6 @@ def test_workspace_override(tmp_path):
     assert bot._loop.workspace == custom_ws
 
 
-def test_sdk_make_provider_uses_github_copilot_backend():
-    from nanobot.config.schema import Config
-    from nanobot.providers.factory import make_provider
-
-    config = Config.model_validate(
-        {
-            "agents": {
-                "defaults": {
-                    "provider": "github-copilot",
-                    "model": "github-copilot/gpt-4.1",
-                }
-            }
-        }
-    )
-
-    with patch("nanobot.providers.openai_compat_provider.AsyncOpenAI"):
-        provider = make_provider(config)
-
-    assert provider.__class__.__name__ == "GitHubCopilotProvider"
-
-
 @pytest.mark.asyncio
 async def test_run_custom_session_key(tmp_path):
     from nanobot.bus.events import OutboundMessage