PLTF-2905: Expand Laminar observability and config guidance for OHE

[juanmichelini]

Summary

• merge the strongest Laminar guidance from the SDK observability and OHE analytics docs
• make the SDK guide the canonical tracing reference with official Laminar links
• keep the OHE analytics page focused on deployment, forwarded LMNR_/LLM_ variables, and post-setup Laminar workflows
• document how to configure Laminar endpoint settings and choose LLM provider/model sizes through an OpenAI-compatible proxy

Testing

• git diff --check

This PR description was created by an AI agent (OpenHands) on behalf of the user.

[enyst]

@juanmichelini Just a quick run to see if the agent sees something. Please feel free to not consider it if it has its moment of exaggerations 😅

@OpenHands Take a look at this PR and verify Laminar docs and clone yourself agent-sdk and openhands repos from the same org if you need. Review it. Post your feedback as a gh review with gh api.

[openhands-ai]

I'm on it! enyst can track my progress at all-hands.dev

[enyst]

Reviewed the docs and cross-checked the Laminar env vars against OpenHands/software-agent-sdk (LMNR_PROJECT_API_KEY, LMNR_BASE_URL, LMNR_FORCE_HTTP) and OpenHands env forwarding (AUTO_FORWARD_PREFIXES). The Laminar doc URLs resolve and git diff --check passes. I left one inline concern about the Enterprise endpoint example using a concrete all-hands.dev host in a guide that otherwise uses <your-base-domain>.

This review was created by an AI agent (OpenHands) on behalf of the user.

[rajshah4]

Great work pull this all together, looks good to me