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_draw_node_tool.py

@@ -46,8 +46,12 @@ def _vm_with_grid() -> ProjectViewModel:
 # ────────────────────────── snap helper ─────────────────────────────
 def test_snap_to_grid_picks_nearest_lines() -> None:
     x, y, z = _snap_to_grid(
-        2.2, 3.7, 0.6,
-        x_lines=[0.0, 3.0], y_lines=[0.0, 4.0], z_lines=[0.0, 3.0],
+        2.2,
+        3.7,
+        0.6,
+        x_lines=[0.0, 3.0],
+        y_lines=[0.0, 4.0],
+        z_lines=[0.0, 3.0],
     )
     assert (x, y, z) == (3.0, 4.0, 0.0)
 
@@ -99,10 +103,11 @@ def test_grid_less_canvas_never_emits_to_tool(qtbot) -> None:  # type: ignore[no
     target. For a grid-less project, the canvas never emits, so the
     tool is never invoked. We therefore don't test rejection here.
     """
-    vm = ProjectViewModel(); vm.new_project()
+    vm = ProjectViewModel()
+    vm.new_project()
     tool = DrawNodeTool(_CanvasStub(), vm)  # type: ignore[arg-type]
     tool.activate()
-    assert vm.project.nodes == []     # type: ignore[union-attr]
+    assert vm.project.nodes == []  # type: ignore[union-attr]
 
 
 @pytest.mark.gui