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/@babel/runtime/helpers/esm/classStaticPrivateFieldSpecGet.js

@@ -0,0 +1,7 @@
+import classApplyDescriptorGet from "./classApplyDescriptorGet.js";
+import assertClassBrand from "./assertClassBrand.js";
+import classCheckPrivateStaticFieldDescriptor from "./classCheckPrivateStaticFieldDescriptor.js";
+function _classStaticPrivateFieldSpecGet(t, s, r) {
+  return assertClassBrand(s, t), classCheckPrivateStaticFieldDescriptor(r, "get"), classApplyDescriptorGet(t, r);
+}
+export { _classStaticPrivateFieldSpecGet as default };