Langfuse v4.38.0

Langfuse releases published Langfuse v4.38.0. This release-watch entry was generated from the project's official GitHub release feed and is kept separate from human-reviewed editorial analysis. Release notes: What's Changed Features feat(api)!: reject legacy reads for new organizations by @maxdeichmann in 17487 feat(ci): deploy AI Gateway automatically to staging by @hassiebp in 17532 feat(api): attribute legacy GET rejections to clients by @maxdeichmann in 17539 feat(web): persistent trace summary strip with tags by @nmtrang29 in 17536 feat(filters): metadata key presence operators; coerce legacy empty-substring filters by @niklassemmler in 17357 feat(ai-gateway): isolate caller tracing context for generations by @hassiebp in 17549 feat(web): graph becomes a view on the tree/timeline switch by @nmtrang29 in 17537 feat(transcript): implement transcript generation from observations by @marliessophie in 17371 feat(ai-gateway): correlate coding agent requests by @hassiebp in 17573 feat(openai): add anonymized customer fixtures for enhanced testing by @marliessophie in 17599 feat(auth): lfe…

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• Check compatibility, migration, and security notes against your current agent stack.
• Run focused regression tests before production rollout.