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/sprintf-js/demo/angular.html

@@ -0,0 +1,20 @@
+<!doctype html>
+<html ng-app="app">
+<head>
+    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-rc.3/angular.min.js"></script>
+    <script src="../src/sprintf.js"></script>
+    <script src="../src/angular-sprintf.js"></script>
+</head>
+<body>
+    <pre>{{ "%+010d"|sprintf:-123 }}</pre>
+    <pre>{{ "%+010d"|vsprintf:[-123] }}</pre>
+    <pre>{{ "%+010d"|fmt:-123 }}</pre>
+    <pre>{{ "%+010d"|vfmt:[-123] }}</pre>
+    <pre>{{ "I've got %2$d apples and %1$d oranges."|fmt:4:2 }}</pre>
+    <pre>{{ "I've got %(apples)d apples and %(oranges)d oranges."|fmt:{apples: 2, oranges: 4} }}</pre>
+
+    <script>
+        angular.module("app", ["sprintf"])
+    </script>
+</body>
+</html>