docs: add Related sections to remaining CLI, gateway API, and help pages

docs/start/docs-directory.md

@@ -63,3 +63,8 @@ For a complete map of the docs, see [Docs hubs](/start/hubs).
 - [Gmail hooks (Pub/Sub)](/automation/cron-jobs#gmail-pubsub-integration)
 - [Security](/gateway/security)
 - [Troubleshooting](/gateway/troubleshooting)
+
+## Related
+
+- [Getting started](/start/getting-started)
+- [Docs hubs](/start/hubs)

docs/start/getting-started.md

@@ -144,3 +144,9 @@ openclaw dashboard
 
 Full reference: [Environment variables](/help/environment).
 </Accordion>
+
+## Related
+
+- [Install overview](/install)
+- [Channels overview](/channels)
+- [Setup](/start/setup)

docs/start/onboarding.md

@@ -88,3 +88,8 @@ Onboarding requests TCC permissions needed for:
   what happens on the gateway host during the first agent run.
 </Step>
 </Steps>
+
+## Related
+
+- [Onboarding overview](/start/onboarding-overview)
+- [Getting started](/start/getting-started)