Update github actions docs with workaround

[Lotte-Verheyden]

Update GitHub Actions integration documentation to include a webhook proxy workaround for repository_dispatch payload format incompatibility.

The original documentation implied a direct integration, but GitHub's repository_dispatch API requires event_type and client_payload fields, which Langfuse webhooks do not provide directly. This PR adds a necessary intermediate webhook proxy step with code examples (Cloudflare Workers, Python FastAPI) to transform the payload, resolving the issue where direct integration failed.

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Linear Issue: LF-2078

 

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Project	Deployment	Preview	Comments	Updated (UTC)
langfuse-docs	Ready	Preview	Comment	Dec 4, 2025 11:19am

[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/prompt-management/features/github-integration	64.44 KB	469.01 KB	134.00% (🟡 +0.67%)

Details

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

First Load is the size of the global bundle plus the bundle for the individual page. If a user were to show up to your website and land on a given page, the first load size represents the amount of javascript that user would need to download. If next/link is used, subsequent page loads would only need to download that page's bundle (the number in the "Size" column), since the global bundle has already been downloaded.

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The "Budget %" column shows what percentage of your performance budget the First Load total takes up. For example, if your budget was 100kb, and a given page's first load size was 10kb, it would be 10% of your budget. You can also see how much this has increased or decreased compared to the base branch of your PR. If this percentage has increased by 20% or more, there will be a red status indicator applied, indicating that special attention should be given to this. If you see "+/- <0.01%" it means that there was a change in bundle size, but it is a trivial enough amount that it can be ignored.