fix(build): build packages requiring newer R on compatible minors

justfile

@@ -95,3 +95,10 @@ check-slots:
 # strip a retired slot from .crow/*.yaml (dry run; pass --apply to write)
 retire-slot codename *flags:
     Rscript local/retire-slot.R {{ codename }} --config-only {{ flags }}
+
+# Format or lint selected R files, defaulting to local tooling.
+format *files="local":
+    air format {{ files }}
+
+fix *files="local":
+    jarl check --fix {{ files }}