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/gui/test_material_dialog_concrete04.py

@@ -37,7 +37,7 @@ def test_concrete04_read_no_tension(qtbot) -> None:  # type: ignore[no-untyped-d
     form._epsc0.setValue(-0.002)
     form._epscu.setValue(-0.005)
     form._Ec.setValue(30e9)
-    form._fct.setValue(0.0)   # 0 → no tension
+    form._fct.setValue(0.0)  # 0 → no tension
     form._et.setValue(0.0)
     form._material_id = 1
 
@@ -77,9 +77,14 @@ def test_concrete04_read_with_tension(qtbot) -> None:  # type: ignore[no-untyped
 def test_concrete04_populate_round_trip(qtbot) -> None:  # type: ignore[no-untyped-def]
     """populate(mat) + read() reproduces the original model object."""
     original = Concrete04(
-        id=3, name="C40-Tension",
-        fpc=-40e6, epsc0=-0.0022, epscu=-0.006, Ec=32e9,
-        fct=2.5e6, et=8e-5,
+        id=3,
+        name="C40-Tension",
+        fpc=-40e6,
+        epsc0=-0.0022,
+        epscu=-0.006,
+        Ec=32e9,
+        fct=2.5e6,
+        et=8e-5,
     )
 
     form = Concrete04Form()
@@ -102,8 +107,8 @@ def test_concrete04_accepts_ksi_values(qtbot) -> None:  # type: ignore[no-untype
     """Form must not clamp US-customary (ksi) values for fpc."""
     form = Concrete04Form()
     qtbot.addWidget(form)
-    form._fpc.setValue(-6.0)        # ksi
-    form._Ec.setValue(3600.0)       # ksi
+    form._fpc.setValue(-6.0)  # ksi
+    form._Ec.setValue(3600.0)  # ksi
     assert form._fpc.value() == pytest.approx(-6.0)
     assert form._Ec.value() == pytest.approx(3600.0)