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/is-alphanumerical/index.js

@@ -0,0 +1,12 @@
+'use strict'
+
+var alphabetical = require('is-alphabetical')
+var decimal = require('is-decimal')
+
+module.exports = alphanumerical
+
+// Check if the given character code, or the character code at the first
+// character, is alphanumerical.
+function alphanumerical(character) {
+  return alphabetical(character) || decimal(character)
+}