Draw the inspector's properties as a property grid

[matt-edmondson]

The node inspector's properties are now rows of ktsu.ImGui.Widgets' new PropertyGrid instead of individually labelled controls. Names line up in a column of their own, every editor fills the width left over rather than whatever the widest label made room for, and the divider between the two columns is the user's to drag.

What changed

• AstGraphEditor.DrawInspector opens one ImGuiWidgets.PropertyGrid and draws each property as a row of it. Which rows a node has is still AstFields' answer, so the panel offers exactly what it did before — only the layout belongs to the widget now.
• A whole number and a fraction get the grid's number rows rather than a text box, so the editor steps with the arrow keys and refuses what is not a number before AstFields.TryWrite has to. The value still travels as text between the two, which is what keeps one undoable command able to record any field. Text is still committed when the box is left or enter is pressed, so a rename is one undo step rather than one per character.
• Two rows the widget has no method for — a choice between arbitrary labelled values, and a count with the buttons that change it — are composed into the grid's own table so they keep the same two columns and the same divider. The grid's Enum row spells an option by its enumeration name, where an operator here reads as its symbol beside its name and an unspecified visibility reads as "(language default)"; and the widget has no row that ends in buttons at all.
• Both composed rows, and each option of a choice, are named for ktsu.ImGui.Probes the way the grid names its own rows, so a headless test finds them beside the rest.
• The grid is given a name column of very nearly half the panel and fifteen significant digits for fractions, so a literal reads as 3.14 rather than 3.140000.

Dependencies

The whole ktsu ImGui suite goes to 3.31.0, the release the property grid arrived in, and ktsu.ImGui.Probes joins the list. An earlier revision of this branch held everything but the widgets back at 3.28.0, because 3.29–3.30's retuned layout pushed a node past what Editor_KeepsTheLayoutInsideTheView allowed; #40 has since taken the suite to 3.30.0 on main and reshaped that test around the new layout, so this branch merges main and moves every package together.

Testing

dotnet build clean, and the full suite passes on the merged tree: 378 tests, including five new ones in AstGraphEditorInspectorPanelTests that drive the panel through the headless rasterizer — a row per property, a typed rename committed on leaving the box as one undo step, a flag committed as it is clicked, an operator picked from the combo by its readable label, and a slot grown and shrunk by its buttons.

🤖 Generated with Claude Code

https://claude.ai/code/session_01UNhZ9nTJqzyTmCySe2ZE5z

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
81.2% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud