OptionalclassOptionalmode"preview" (default) renders properties read-only; "edit" makes the property widgets interactive and emits onPropertyChange.
OptionalnodeLR-40 (owner review 2026-07-22): the node dot shows the node's ACTUAL applied color when the graph colors by a non-type property; type-derived color is only the fallback.
OptionalonOptional close handler; when provided a close button is shown.
OptionalonCalled in edit mode when a property widget changes.
The selected element: "node" or "edge" and its ID, or null.
OptionalspecOptional spec controlling the widget used per property key.
OptionaltitleUpstream round-6 P3 (2026-07-28): a control rendered inline with the inspector's title (e.g. copy-identifier).
Optionaltype12.11: surfaces that apply a custom EncodingSpec pass their own type -> color resolver (e.g. categoricalColorMap keyed by VALUE) so the panel's type chips match the graph exactly; the internal theme-palette map only matches the DEFAULT encoding.
The UGM instance to read data from.
CSS class for the container.