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>

vendor/spatie/ignition/node_modules/bail/index.js

@@ -0,0 +1,12 @@
+/**
+ * Throw a given error.
+ *
+ * @param {Error|null|undefined} [error]
+ *   Maybe error.
+ * @returns {asserts error is null|undefined}
+ */
+export function bail(error) {
+  if (error) {
+    throw error
+  }
+}