Adds CRAN comments

Author: andyquinterom

cran-comments.md

@@ -0,0 +1,13 @@
+## Test environments
+* ubuntu-latest (on GitHub Actions), R-devel, rustc 1.88.0
+* ubuntu-latest (on GitHub Actions), R-release, rustc 1.88.0
+* ubuntu-latest (on GitHub Actions), R-oldrel-1, rustc 1.88.0
+* macos-latest (on GitHub Actions), R-release, rustc 1.88.0
+* windows-latest (on GitHub Actions), R-release, rustc 1.88.0
+
+## R CMD check results
+
+0 errors | 0 warnings | 0 notes
+
+## Rust Compatibility
+This package has been extensively tested with Rust 1.88.0. The `SystemRequirements` field in `DESCRIPTION` specifies `rustc >= 1.88` to ensure compatibility with the underlying `delta-rs` components. Continuous Integration via GitHub Actions confirms successful builds and unit tests across Linux, macOS, and Windows using this Rust version.