add rollout checklist

Author: mohab-sameh

PUBLIC_ROLLOUT_TODO.md

@@ -0,0 +1,10 @@
+# Public Rollout TODO
+
+- Port historical execution counts in DB. Owner: Mo
+- Update publisher display name to `Codemod` in DB. Owner: Mo
+- Confirm all `react-*` and `react-19-*` registry pages are public and searchable.
+- Confirm recipe uses the final public package names.
+- Update public docs/README links if registry URLs changed after renaming.
+- Do one clean smoke run of `react-19-migration-recipe` from the registry.
+- Inform React folks and share the final package list.
+- Monitor first public executions for install, search, and workflow issues.