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>

node_modules/collect.js/src/methods/crossJoin.js

@@ -0,0 +1,30 @@
+'use strict';
+
+module.exports = function crossJoin(...values) {
+  function join(collection, constructor, args) {
+    let current = args[0];
+
+    if (current instanceof constructor) {
+      current = current.all();
+    }
+
+    const rest = args.slice(1);
+    const last = !rest.length;
+    let result = [];
+
+    for (let i = 0; i < current.length; i += 1) {
+      const collectionCopy = collection.slice();
+      collectionCopy.push(current[i]);
+
+      if (last) {
+        result.push(collectionCopy);
+      } else {
+        result = result.concat(join(collectionCopy, constructor, rest));
+      }
+    }
+
+    return result;
+  }
+
+  return new this.constructor(join([], this.constructor, [].concat([this.items], values)));
+};