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/safe-identifier/README.md

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+# safe-identifier
+
+Sanitize strings for use as JavaScript identifiers & property names.
+
+```
+npm install --save safe-identifier
+```
+
+```js
+import { identifier, property } from 'safe-identifier'
+
+identifier('Foo') === 'Foo'
+identifier('enum') === '_enum'
+identifier('my var', true) === 'my_var_hk17pp'
+identifier(' my \0var ', true) === 'my_var_1d8fi3'
+
+property('Foo', 'bar') === 'Foo.bar'
+property('Foo', 'bar\nbar') === 'Foo["bar\\nbar"]'
+property(null, 'foo') === 'foo'
+property(null, 'void') === '"void"'
+```
+
+## `identifier(key: string, unique: boolean): string`
+
+Sanitize a string for use as an identifier name
+
+Replaces invalid character sequences with `_` and may add a `_` prefix if the
+resulting name would conflict with a JavaScript reserved name, covering all
+standards from ES3 up to ES2018, along with current
+[active proposals](https://github.com/tc39/proposals).
+
+If `unique` is true, a 32-bit hash of the `key` is appended to the result in
+order to help ensure that different inputs produce different outputs.
+
+## `property(obj: string?, key: string): string`
+
+Sanitize a string for use as a property name
+
+By default uses `obj.key` notation, falling back to `obj["key"]` if the key
+contains invalid characters or is an ECMAScript 3rd Edition reserved word
+(required for IE8 compatibility). If `obj` is empty, returns only the possibly
+quoted property key. The correctness of `obj` is not checked.