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/vm-browserify/example/run/server.js

@@ -0,0 +1,6 @@
+var ecstatic = require('ecstatic')(__dirname);
+var http = require('http');
+http.createServer(ecstatic).listen(8000);
+
+console.log('listening on :8000');
+console.log('# remember to run browserify entry.js -o bundle.js');