add archive message

Author: bblodfon

README.Rmd

@@ -12,6 +12,10 @@ knitr::opts_chunk$set(
 
 # mlr3proba
 
+<img src="man/figures/warning.png" width = "42" /> This package **will be archived** somewhere in 2026.
+It should work with other mlr3-packages on the following versions: `mlr3` (1.2.0/1.3.0), `mlr3pipelines` (0.10.0), `mlr3tuning` (1.5.0) and `mlr3extralearners` (1.3.0).
+Development efforts for `mlr3`-compatible survival analysis continues in packages `survdistr`, `mlr3survival`, `mlr3cmprsk` (CRAN releases hopefully within 2026).
+
 Probabilistic Learning for **[mlr3](https://github.com/mlr-org/mlr3/)** ([website](https://mlr3proba.mlr-org.com/)).
 
 <!-- badges: start -->

README.md

@@ -1,6 +1,14 @@
 
 # mlr3proba
 
+<img src="man/figures/warning.png" width = "42" /> This package **will
+be archived** somewhere in 2026. It should work with other mlr3-packages
+on the following versions: `mlr3` (1.2.0/1.3.0), `mlr3pipelines`
+(0.10.0), `mlr3tuning` (1.5.0) and `mlr3extralearners` (1.3.0).
+Development efforts for `mlr3`-compatible survival analysis continues in
+packages `survdistr`, `mlr3survival`, `mlr3cmprsk` (CRAN releases
+hopefully within 2026).
+
 Probabilistic Learning for **[mlr3](https://github.com/mlr-org/mlr3/)**
 ([website](https://mlr3proba.mlr-org.com/)).