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

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

node_modules/collect.js/src/methods/flatten.js

@@ -0,0 +1,53 @@
+'use strict';
+
+const { isArray, isObject } = require('../helpers/is');
+
+module.exports = function flatten(depth) {
+  let flattenDepth = depth || Infinity;
+
+  let fullyFlattened = false;
+  let collection = [];
+
+  const flat = function flat(items) {
+    collection = [];
+
+    if (isArray(items)) {
+      items.forEach((item) => {
+        if (isArray(item)) {
+          collection = collection.concat(item);
+        } else if (isObject(item)) {
+          Object.keys(item).forEach((property) => {
+            collection = collection.concat(item[property]);
+          });
+        } else {
+          collection.push(item);
+        }
+      });
+    } else {
+      Object.keys(items).forEach((property) => {
+        if (isArray(items[property])) {
+          collection = collection.concat(items[property]);
+        } else if (isObject(items[property])) {
+          Object.keys(items[property]).forEach((prop) => {
+            collection = collection.concat(items[property][prop]);
+          });
+        } else {
+          collection.push(items[property]);
+        }
+      });
+    }
+
+    fullyFlattened = collection.filter(item => isObject(item));
+    fullyFlattened = fullyFlattened.length === 0;
+
+    flattenDepth -= 1;
+  };
+
+  flat(this.items);
+
+  while (!fullyFlattened && flattenDepth > 0) {
+    flat(collection);
+  }
+
+  return new this.constructor(collection);
+};