release: public alpha 0.6.0 baseline

examples/hello-command/README.md

@@ -0,0 +1,13 @@
+# hello-command
+
+Minimal JWeBot command extension.
+
+It demonstrates the only allowed output path:
+
+```text
+command handler -> ExtensionResult -> ReplyPlan
+```
+
+The extension does not receive a GUI sender, group selector, environment,
+ledger, shell, or unrestricted network client.
+