chore: open v2.7.3.9009 + NEWS for varPro pedagogical doc audit

Author: ehrlinger

DESCRIPTION

@@ -1,7 +1,7 @@
 Package: ggRandomForests
 Type: Package
 Title: Visually Exploring Random Forests
-Version: 2.7.3.9007
+Version: 2.7.3.9009
 Date: 2026-05-21
 Authors@R: person("John", "Ehrlinger",
   role = c("aut", "cre"),

NEWS.md

@@ -1,8 +1,16 @@
 Package: ggRandomForests
-Version: 2.7.3.9007
+Version: 2.7.3.9009
 
 ggRandomForests v2.8.0 (development) — continued
 =================================================
+* Documentation: pedagogical pass over the varPro wrappers
+  (`gg_partial_varpro`, `gg_varpro`, `gg_udependent` and their `plot.*`
+  methods). Each help page now has explicit "What X is doing", "What's
+  in the output", and "What you use this for" sections so a reader new
+  to varPro can learn the underlying method (release rules, beta-entropy
+  dependency, parametric / nonparametric / causal partial estimators)
+  from the help page alone, not just the wrapper mechanics. No API or
+  behavioural change.
 * `plot.gg_variable()`: fix render error on the default multi-class
   classification plot. The default-xvar selection was treating `yvar` (the
   observed-class column) and `outcome` (the multi-class pivot facet) as