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/split-on-first/readme.md

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+# split-on-first [![Build Status](https://travis-ci.com/sindresorhus/split-on-first.svg?branch=master)](https://travis-ci.com/sindresorhus/split-on-first)
+
+> Split a string on the first occurrence of a given separator
+
+This is similar to [`String#split()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/split), but that one splits on all the occurrences, not just the first one.
+
+
+## Install
+
+```
+$ npm install split-on-first
+```
+
+
+## Usage
+
+```js
+const splitOnFirst = require('split-on-first');
+
+splitOnFirst('a-b-c', '-');
+//=> ['a', 'b-c']
+
+splitOnFirst('key:value:value2', ':');
+//=> ['key', 'value:value2']
+
+splitOnFirst('a---b---c', '---');
+//=> ['a', 'b---c']
+
+splitOnFirst('a-b-c', '+');
+//=> ['a-b-c']
+```
+
+
+## API
+
+### splitOnFirst(string, separator)
+
+#### string
+
+Type: `string`
+
+The string to split.
+
+#### separator
+
+Type: `string`
+
+The separator to split on.
+
+
+## Related
+
+- [split-at](https://github.com/sindresorhus/split-at) - Split a string at one or more indices
+
+
+## License
+
+MIT © [Sindre Sorhus](https://sindresorhus.com)