Add OpenTelemetry get started guide to tracing docs

[Lotte-Verheyden]

Important

Adds OpenTelemetry setup guide to tracing docs, detailing Langfuse configuration and authentication.

• New Guide:
  • Adds opentelemetry.mdx to components-mdx/get-started/ for OpenTelemetry setup.
  • Provides instructions to configure Langfuse as an OpenTelemetry backend.
  • Details environment variable setup for EU and US data regions.
  • Explains Basic Auth setup using Langfuse API keys.
• Documentation Update:
  • Updates get-started.mdx in pages/docs/observability/ to include OpenTelemetry in the integration tabs.
  • Adds a new tab for OpenTelemetry with a link to full documentation.

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Project	Deployment	Preview	Comments	Updated (UTC)
langfuse-docs	Ready	Preview	Comment	Dec 3, 2025 5:55pm

[github-actions]

📦 Next.js Bundle Analysis for langfuse-docs

This analysis was generated by the Next.js Bundle Analysis action. 🤖

One Page Changed Size

The following page changed size from the code in this PR compared to its base branch:

Page	Size (compressed)	First Load	% of Budget (350 KB)
/docs/observability/get-started	70.33 KB	474.54 KB	135.58% (🟡 +0.17%)

Details

Only the gzipped size is provided here based on an expert tip.

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[jannikmaierhoefer]

LGTM:)