Give the split graphic modules their abstraction-level docs

node-graph/libraries/graphic-types/src/graphic/glue.rs

@@ -1,3 +1,5 @@
+//! The record-crossing glue: group interiors carried between the owned, resident, and persistent regions.
+
 use super::Graphic;
 use core_types::Color;
 use core_types::list::{Item, List};

node-graph/libraries/graphic-types/src/graphic/legacy.rs

@@ -1,3 +1,5 @@
+//! The legacy bridge: record-backed groups rebuilt as owned legacy lists.
+
 use super::walk::push_lane_paint_into_interiors;
 use super::{Graphic, detable_items};
 use crate::markers::{ATTR_FILL, ATTR_STROKE};

node-graph/libraries/graphic-types/src/graphic/paint.rs

@@ -1,3 +1,5 @@
+//! The paint column level: fill and stroke read as lane columns and threaded down to the elements they reach.
+
 use super::{Graphic, IntoGraphicList};
 use crate::markers::{ATTR_FILL, ATTR_STROKE, Fill, Stroke};
 use core_types::ATTR_TRANSFORM;

node-graph/libraries/graphic-types/src/graphic/walk.rs

@@ -1,3 +1,5 @@
+//! The native-content walk: vector rows reached through a graphic's own storage, with no legacy conversion.
+
 use super::Graphic;
 use super::paint::{LanePaint, PaintColumns, PaintReach, is_paint_present, paint_graphics, set_paint_attribute_at};
 use crate::markers::{ATTR_FILL, ATTR_STROKE, Fill};