From 0f933a2b9989db921b9050492f2092e5200aa911 Mon Sep 17 00:00:00 2001
From: mahach666 <79989386+mahach666@users.noreply.github.com>
Date: Thu, 12 Nov 2026 13:26:53 +0300
Subject: [PATCH] Document which extras are frozen

---
 .github/dependabot.yml | 10 ++++++++++
 CHANGELOG.md           |  6 ++++++
 README.md              | 11 +++++++++++
 3 files changed, 27 insertions(+)
 create mode 100644 .github/dependabot.yml

diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..a846233
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,10 @@
+version: 2
+updates:
+  - package-ecosystem: nuget
+    directory: /
+    schedule:
+      interval: weekly
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: weekly
diff --git a/CHANGELOG.md b/CHANGELOG.md
index daa8cff..3f8f500 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 All notable changes to the `NwcIO` library and CLI are documented in this file.
 
+## [Unreleased]
+
+### Documentation
+
+- **Documentation**: Added a "Scope and frozen features" section to the README listing the extras that now receive bug fixes only and their planned replacements.
+
 ## [0.10.0] - 2026-11-11
 
 ### Major Additions & Capabilities
diff --git a/README.md b/README.md
index adb51bc..b087909 100644
--- a/README.md
+++ b/README.md
@@ -147,6 +147,17 @@ Reads binary Navisworks Cache (`.nwc`), Navisworks Document (`.nwd`), and Navisw
 - Geometry extraction supports triangle meshes, line sets, cylinders, and point clouds; proprietary custom parametric solids are tessellated.
 - Writing native `.nwd` files is not supported (export targets native `.nwc`, open standards: IFC, GLB, OBJ, JSON, HTML, BCF, and Navisworks XML exchange).
 
+## Scope and frozen features
+
+NwcIO reads and writes its own format. These extras are frozen: they receive bug fixes only, with no new features or options.
+
+- HTML viewer, GLB and OBJ export, and IFC export.
+- Clash detection (triangle-level and bounding-box engines), clash grouping, clash matrix, and the HTML clash report.
+- Measure, grids, revision diff, and BCF.
+- TimeLiner schedule import and export, selection and search sets, appearance profiler, mesh clipper, and Navisworks XML exchange. These stay in NwcIO.
+
+Viewing will move to [IOViewer](https://github.com/IOExtend/IOViewer) through a planned `NwcIO.Scene` adapter over the shared `IOScene` model, which is also planned. Coordination features such as clash, measure, diff, and BCF will move to a planned `IOCoord` package, and GLB export to a shared GLB writer in a planned `IOScene.Formats` package. None of these packages is published yet. The frozen features stay available and are removed no earlier than NwcIO 1.0, and only after a published replacement exists.
+
 ## Build from source and tests
 
 Use the .NET SDK selected by `global.json`, which specifies 10.0.100 with `latestFeature` roll-forward.