Initial commit: Node.js Example Pack for Attune

Includes:
- 3 Node.js actions (hello, http_example, read_counter)
- 1 counter trigger type
- 1 counter sensor (Node.js, keystore-backed, per-rule state)
- 1 example rule (count_and_log)
- package.json with node-fetch and amqplib
- README with full usage documentation

actions/read_counter.js

@@ -0,0 +1,30 @@
+#!/usr/bin/env node
+/**
+ * Read Counter Action - Node.js Example Pack
+ *
+ * Consumes a counter value (typically from the counter sensor trigger payload)
+ * and returns a formatted message containing the counter value.
+ *
+ * Parameters are delivered via stdin as JSON from the Node.js wrapper.
+ */
+
+"use strict";
+
+/**
+ * @param {object} params
+ * @param {number} params.counter - The counter value from the trigger payload.
+ * @param {string} params.rule_ref - The rule reference the counter is scoped to.
+ * @returns {object} Formatted message and raw counter value.
+ */
+function run(params) {
+  const counter = params.counter !== undefined ? params.counter : 0;
+  const ruleRef = params.rule_ref || "unknown";
+
+  return {
+    message: `Counter value is ${counter} (from rule: ${ruleRef})`,
+    counter: counter,
+    rule_ref: ruleRef,
+  };
+}
+
+module.exports = { run };