feat(elicitation): add is_configured() and apply_runtime_config() to settings

tests/test_setup.py

@@ -1,3 +1,5 @@
+from unittest.mock import patch
+
 import pytest
 
 from unraid_mcp.core.exceptions import CredentialsNotConfiguredError, ToolError
@@ -17,3 +19,36 @@ def test_credentials_not_configured_error_is_exception():
 def test_credentials_not_configured_error_is_not_tool_error():
     """CredentialsNotConfiguredError must NOT be a ToolError — it bypasses MCP protocol error handling."""
     assert not issubclass(CredentialsNotConfiguredError, ToolError)
+
+
+def test_settings_is_configured_true():
+    from unraid_mcp.config import settings
+
+    with (
+        patch.object(settings, "UNRAID_API_URL", "https://example.com"),
+        patch.object(settings, "UNRAID_API_KEY", "key123"),
+    ):
+        assert settings.is_configured() is True
+
+
+def test_settings_is_configured_false_when_missing():
+    from unraid_mcp.config import settings
+
+    with (
+        patch.object(settings, "UNRAID_API_URL", None),
+        patch.object(settings, "UNRAID_API_KEY", None),
+    ):
+        assert settings.is_configured() is False
+
+
+def test_settings_apply_runtime_config_updates_module_globals():
+    from unraid_mcp.config import settings
+
+    original_url = settings.UNRAID_API_URL
+    original_key = settings.UNRAID_API_KEY
+    settings.apply_runtime_config("https://newurl.com/graphql", "newkey")
+    assert settings.UNRAID_API_URL == "https://newurl.com/graphql"
+    assert settings.UNRAID_API_KEY == "newkey"
+    # Reset so other tests are not affected
+    settings.UNRAID_API_URL = original_url
+    settings.UNRAID_API_KEY = original_key