re-uploading work

packs/core/actions/echo.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+# Echo Action - Core Pack
+# Outputs a message to stdout with optional uppercase conversion
+
+set -e
+
+# Parse parameters from environment variables
+# Attune passes action parameters as environment variables prefixed with ATTUNE_ACTION_
+MESSAGE="${ATTUNE_ACTION_MESSAGE:-Hello, World!}"
+UPPERCASE="${ATTUNE_ACTION_UPPERCASE:-false}"
+
+# Convert to uppercase if requested
+if [ "$UPPERCASE" = "true" ]; then
+    MESSAGE=$(echo "$MESSAGE" | tr '[:lower:]' '[:upper:]')
+fi
+
+# Echo the message
+echo "$MESSAGE"
+
+# Exit successfully
+exit 0