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/docs/api/eachSpread.md

@@ -0,0 +1,19 @@
+# `eachSpread()`
+
+The eachSpread method iterates over the collection's items, passing each nested item value into the given callback:
+
+```js
+const collection = collect([['John Doe', 35], ['Jane Doe', 33]]);
+
+collection.eachSpread((name, age) => {
+  //
+});
+```
+
+You may stop iterating through the items by returning false from the callback:
+
+```js
+collection.eachSpread((name, age) => false);
+```
+
+[View source on GitHub](https://github.com/ecrmnn/collect.js/blob/master/src/methods/eachSpread.js)