Fix bin/publish: copy docs.dist from project root

Fix bin/publish: use correct .env path for rspade_system
Fix bin/publish script: prevent grep exit code 1 from terminating script

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

app/RSpade/Core/Js/datetime.js

@@ -0,0 +1,28 @@
+/*
+ * Date and time utility functions for the RSpade framework.
+ * These functions handle date/time conversions and Unix timestamps.
+ */
+
+// ============================================================================
+// DATE/TIME UTILITIES
+// ============================================================================
+
+/**
+ * Gets the current Unix timestamp (seconds since epoch)
+ * @returns {number} Current Unix timestamp in seconds
+ * @todo Calculate based on server time at page render
+ * @todo Move to a date library
+ */
+function unix_time() {
+    return Math.round(new Date().getTime() / 1000);
+}
+
+/**
+ * Converts a date string to Unix timestamp
+ * @param {string} str_date - Date string (Y-m-d H:i:s format)
+ * @returns {number} Unix timestamp in seconds
+ */
+function ymdhis_to_unix(str_date) {
+    const date = new Date(str_date);
+    return date.getTime() / 1000;
+}