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/param-case/dist/index.d.ts

@@ -0,0 +1,3 @@
+import { Options } from "dot-case";
+export { Options };
+export declare function paramCase(input: string, options?: Options): string;