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/commander/package-support.json

@@ -0,0 +1,16 @@
+{
+  "versions": [
+    {
+      "version": "*",
+      "target": {
+        "node": "supported"
+      },
+      "response": {
+        "type": "time-permitting"
+      },
+      "backing": {
+        "npm-funding": true
+      }
+    }
+  ]
+}