chore: adopt remaining local development state

Catch-all for the intermixed residue of the unpushed otko-development
work ported into this tree: combinations/console-dock/quick-guide wiring
across commands, core, services, views and tests; repo-wide ruff-format
normalization; README/CONTRIBUTING updates; and the toolbar default
(both toolbars now open in the top area, quick guide text updated).

Splitting this further would require hunk-level surgery with low
confidence; the preceding commits in this branch isolate the
self-contained features.

tests/integration/test_ex1a_canti2d.py

@@ -13,6 +13,8 @@ from otko.core import PushoverCase, TransientCase  # noqa: E402
 from otko.services import load_project, save_project  # noqa: E402
 from otko.services.opensees_runner import OpenSeesRunner  # noqa: E402
 
+pytestmark = pytest.mark.slow
+
 
 def _reload(proj, tmp_path):  # type: ignore[no-untyped-def]
     path = tmp_path / "ex1a_canti2d.osmodel"