fix: copy repo README to CLI for npm publishing

build-npm.sh now copies the root README.md into cli/ so the npm package
page shows the same README as the GitHub repo. release.sh cleans up the
copy after publishing during the restore step.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

scripts/release.sh

@@ -178,6 +178,11 @@ if [ -f "$CLI_DIR/package.dev.json" ]; then
   echo "  ✓ Restored workspace dependencies in cli/package.json"
 fi
 
+# Remove the README copied for npm publishing
+if [ -f "$CLI_DIR/README.md" ]; then
+  rm "$CLI_DIR/README.md"
+fi
+
 # Commit all changes
 git add -A
 git commit -m "chore: release v$NEW_VERSION"