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/containsOneItem.md

@@ -0,0 +1,31 @@
+# `containsOneItem()`
+
+The containsOneItem method returns true if the collection contains exactly one item; otherwise, false is returned:
+
+```js
+collect([1]).containsOneItem();
+// true
+
+collect({ firstname: 'Luis' }).containsOneItem();
+// true
+
+collect('value').containsOneItem();
+// true
+
+collect([1, 2, 3]).containsOneItem();
+//  false
+
+collect({ firstname: 'Luis', lastname: 'Díaz' }).containsOneItem();
+// false
+
+collect().containsOneItem();
+// false
+
+collect([]).containsOneItem();
+// false
+
+collect({}).containsOneItem();
+// false
+```
+
+[View source on GitHub](https://github.com/ecrmnn/collect.js/blob/master/src/methods/containsOneItem.js)