docs(concepts,automation,plugins): add Related sections to pages missing them

docs/plugins/agent-tools.md

@@ -8,3 +8,8 @@ title: "Registering tools"
 # Registering Tools in Plugins
 
 This page has moved. See [Building Plugins: Registering agent tools](/plugins/building-plugins#registering-agent-tools).
+
+## Related
+
+- [Building plugins](/plugins/building-plugins)
+- [Plugin SDK setup](/plugins/sdk-setup)

docs/plugins/architecture.md

@@ -1517,3 +1517,9 @@ That keeps the rule simple:
 - vendor plugins own vendor implementations
 - feature/channel plugins consume runtime helpers
 - contract tests keep ownership explicit
+
+## Related
+
+- [Building plugins](/plugins/building-plugins)
+- [Plugin SDK setup](/plugins/sdk-setup)
+- [Plugin manifest](/plugins/manifest)

docs/plugins/building-extensions.md

@@ -6,3 +6,8 @@ read_when:
 ---
 
 This page has moved to [Building Plugins](/plugins/building-plugins).
+
+## Related
+
+- [Building plugins](/plugins/building-plugins)
+- [Plugin architecture](/plugins/architecture)

docs/plugins/sdk-channel-plugins.md

@@ -652,3 +652,9 @@ surface unless you are maintaining that bundled plugin family directly.
 - [SDK Overview](/plugins/sdk-overview) — full subpath import reference
 - [SDK Testing](/plugins/sdk-testing) — test utilities and contract tests
 - [Plugin Manifest](/plugins/manifest) — full manifest schema
+
+## Related
+
+- [Plugin SDK setup](/plugins/sdk-setup)
+- [Building plugins](/plugins/building-plugins)
+- [Agent harness plugins](/plugins/sdk-agent-harness)

docs/plugins/sdk-provider-plugins.md

@@ -718,3 +718,9 @@ providers:
 - [SDK Runtime](/plugins/sdk-runtime) — `api.runtime` helpers (TTS, search, subagent)
 - [SDK Overview](/plugins/sdk-overview) — full subpath import reference
 - [Plugin Internals](/plugins/architecture#provider-runtime-hooks) — hook details and bundled examples
+
+## Related
+
+- [Plugin SDK setup](/plugins/sdk-setup)
+- [Building plugins](/plugins/building-plugins)
+- [Building channel plugins](/plugins/sdk-channel-plugins)

docs/plugins/voice-call.md

@@ -501,3 +501,9 @@ This repo ships a matching skill doc at `skills/voice-call/SKILL.md`.
 - `voicecall.speak` (`callId`, `message`)
 - `voicecall.end` (`callId`)
 - `voicecall.status` (`callId`)
+
+## Related
+
+- [Text-to-speech](/tools/tts)
+- [Talk mode](/nodes/talk)
+- [Voice wake](/nodes/voicewake)

docs/plugins/zalouser.md

@@ -76,3 +76,8 @@ Tool name: `zalouser`
 Actions: `send`, `image`, `link`, `friends`, `groups`, `me`, `status`
 
 Channel message actions also support `react` for message reactions.
+
+## Related
+
+- [Building plugins](/plugins/building-plugins)
+- [Community plugins](/plugins/community)