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/postcss-load-config/src/req.js

@@ -0,0 +1,10 @@
+// eslint-disable-next-line node/no-deprecated-api
+const { createRequire, createRequireFromPath } = require('module')
+
+function req (name, rootFile) {
+  const create = createRequire || createRequireFromPath
+  const require = create(rootFile)
+  return require(name)
+}
+
+module.exports = req