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_beam_quad_2d.py

@@ -12,6 +12,8 @@ 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_beam_quad_2d_midspan_deflection(tmp_path) -> None:  # type: ignore[no-untyped-def]
     """10-step LoadControl on a 16×4 plane-stress quad mesh — reference
@@ -23,6 +25,7 @@ def test_beam_quad_2d_midspan_deflection(tmp_path) -> None:  # type: ignore[no-u
         _mid_top_node_id,
         build_beam_quad_2d,
     )
+
     proj = build_beam_quad_2d()
     proj.validate_references()
 
@@ -49,10 +52,10 @@ def test_beam_quad_2d_midspan_deflection(tmp_path) -> None:  # type: ignore[no-u
 
     # By symmetry, left and right support reactions must balance the two
     # 10-kip midspan loads (total -20 kip vertical).
-    assert reloaded.nodes[0].id == 1     # left pin
+    assert reloaded.nodes[0].id == 1  # left pin
     reaction_sum_fy = sum(
         result.node_reaction[nid][-1, 1]
-        for nid in (1, 17)              # node 17 = (L, 0) = roller
+        for nid in (1, 17)  # node 17 = (L, 0) = roller
     )
     assert reaction_sum_fy == pytest.approx(20.0, abs=1e-6)
 
@@ -69,6 +72,7 @@ def test_beam_quad_2d_free_vibration_chain(tmp_path) -> None:  # type: ignore[no
         _mid_bottom_node_id,
         build_beam_quad_2d,
     )
+
     proj = build_beam_quad_2d()
     proj.validate_references()
 
@@ -81,6 +85,7 @@ def test_beam_quad_2d_free_vibration_chain(tmp_path) -> None:  # type: ignore[no
     r = OpenSeesRunner(reloaded).run(reloaded.analyses[1], results_dir=results_dir)
 
     import h5py
+
     with h5py.File(r.h5_path) as f:
         t = f["time"][:]
         u = f[f"nodes/{_mid_bottom_node_id()}/disp"][:, 1]