ADD-FIX: new diffcheck architecture content + minor fix for doc statistical components

Author: 9and3

assets/img/fig_scheme_softarch.png

@@ -1,4 +1,22 @@
 (df_architecture_guide)=
 # diffCheck architecture
 
-/// more info and details about how the diffCheck architecture works as a plugin
+The software architecture of DF is organized into three main sections. 
+* a) **C++**: 
+  The first foundational portion of the source code is represented by a C++ umbrella library regrouping low-level dependencies such as *Open3d*, *CGAL* and *Cilantro* which power the back-end of the most complex and demanding computational functionalities DF can offer. 
+* b) **PythonAPI**: 
+  The previous portion  portion is wrapped into the second DF's component: an API written in Python 3.9.1 and distributed via PyPI (Python Package Index).
+* c) **GHPlugin**:
+  Finally, the GH Python-based plug-in represents only the top-level visual scripting DF's interface.
+
+Here is a diagram of the software architecture:
+
+<br>
+
+<p align="center">
+    <img src="_static/fig_scheme_softarch.png" style="background-color: transparent; width: 100%; max-width: 800px;" />
+</p>
+
+<br>
+
+With Rhino v.8’s integration of CPython into its .NET ecosystem, we developed a fully Python-based Grasshopper plug-in. Distributed through Rhino’s Yak manager, it requires no extra installations. Inspired by the Compas framework, the plug-in is composed entirely of .ghuser objects, supporting CI practices with automatic component documentation. Additionally, we believe a Python-based plug-in encourages broader contributions, as Python’s simplicity and widespread use make it more accessible to the digital fabrication community.

doc/_static/fig_scheme_softarch.png

@@ -113,4 +113,5 @@ DF has a Grasshopper_ plugin with a set of components that allows the user to in
    gh_DFPreviewAssembly
    gh_DFRemoveBeam
    gh_DFColorizeCloud
-   gh_DFBrepToCloud
+   gh_DFBrepToCloud
+   gh_DFRemoveStatisticalOutliers