docs(providers): add Related sections to remaining provider pages

docs/providers/elevenlabs.md

@@ -107,3 +107,8 @@ Voice Call receives Twilio media as 8 kHz G.711 u-law. The ElevenLabs realtime
 provider defaults to `ulaw_8000`, so telephony frames can be forwarded without
 transcoding.
 </Note>
+
+## Related
+
+- [Text-to-speech](/tools/tts)
+- [Model selection](/concepts/model-providers)

docs/providers/lmstudio.md

@@ -171,3 +171,9 @@ If setup reports HTTP 401, verify your API key:
 ### Just-in-time model loading
 
 LM Studio supports just-in-time (JIT) model loading, where models are loaded on first request. Make sure you have this enabled to avoid 'Model not loaded' errors.
+
+## Related
+
+- [Model selection](/concepts/model-providers)
+- [Ollama](/providers/ollama)
+- [Local models](/gateway/local-models)

docs/providers/models.md

@@ -58,3 +58,9 @@ model as `provider/model`.
 
 For the full provider catalog (xAI, Groq, Mistral, etc.) and advanced configuration,
 see [Model providers](/concepts/model-providers).
+
+## Related
+
+- [Model selection](/concepts/model-providers)
+- [Model failover](/concepts/model-failover)
+- [Models CLI](/cli/models)

docs/providers/qwen_modelstudio.md

@@ -9,3 +9,9 @@ read_when:
 This page moved to [Qwen](/providers/qwen). See [Qwen](/providers/qwen) for
 the canonical provider setup, endpoint details, compatibility aliases, and Wan
 video-generation notes.
+
+## Related
+
+- [Alibaba Model Studio](/providers/alibaba)
+- [Qwen](/providers/qwen)
+- [Model selection](/concepts/model-providers)