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_rc_frame_gravity.py

@@ -9,6 +9,8 @@ pytest.importorskip("openseespy")
 from otko.services import load_project, save_project  # noqa: E402
 from otko.services.opensees_runner import OpenSeesRunner  # noqa: E402
 
+pytestmark = pytest.mark.slow
+
 
 def test_rc_frame_gravity_matches_opensees_reference(tmp_path) -> None:  # type: ignore[no-untyped-def]
     """Build → save → load → run → compare to OpenSees Tcl output.
@@ -21,6 +23,7 @@ def test_rc_frame_gravity_matches_opensees_reference(tmp_path) -> None:  # type:
     load stepped onto each top node).
     """
     from examples.rc_frame_gravity import build_rc_frame_gravity, P_LOAD
+
     proj = build_rc_frame_gravity()
     proj.validate_references()
 
@@ -54,7 +57,7 @@ def test_rc_frame_gravity_matches_opensees_reference(tmp_path) -> None:  # type:
     # OpenSees equilibrium sign, i.e. the first component equals the
     # applied vertical load on end i.
     col1 = result.element_forces[1][-1]
-    assert abs(col1[0]) == pytest.approx(P_LOAD, abs=1.0), (
-        f"Column 1 axial {col1[0]:.2f} ≠ ±{P_LOAD} kip"
-    )
+    assert abs(col1[0]) == pytest.approx(
+        P_LOAD, abs=1.0
+    ), f"Column 1 axial {col1[0]:.2f} ≠ ±{P_LOAD} kip"
     assert abs(col1[3]) == pytest.approx(P_LOAD, abs=1.0)