feat(evlog): add edgeUrl ingest support

[gabrielelpidio]

🔗 Linked issue

Resolves #46
Fixes EVL-47

📚 Description

This PR adds edge endpoint support to the Axiom adapter and aligns evlog’s config surface with the Axiom SDK direction.

Changes included:

• Add edgeUrl support in createAxiomDrain() config resolution.
• Add environment variable support for edge URL:
  • NUXT_AXIOM_EDGE_URL
  • AXIOM_EDGE_URL
• Use mutually exclusive endpoint config typing (edgeUrl xor baseUrl) for adapter and Nuxt module options.
• Implement ingest URL resolution for both endpoint types:
  • edgeUrl -> /v1/ingest/{dataset}
  • baseUrl (or default) -> /v1/datasets/{dataset}/ingest
• Preserve custom edgeUrl paths as-is (trim trailing slash), matching upstream behavior.
• Add runtime guard for mixed runtime/env config: when both are present, warn and prioritize edgeUrl.
• Extend adapter tests to cover edge URL resolution and dataset encoding for edge ingest.
• Update Axiom adapter docs with new env vars and endpoint option behavior.

Validation run locally:

• bun run test test/adapters/axiom.test.ts
• bun run build (package)
• bun run lint src/adapters/axiom.ts src/nuxt/module.ts test/adapters/axiom.test.ts

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

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[github-actions]

Thank you for following the naming conventions! 🙏

[HugoRCD]

@gabrielelpidio Thanks for the PR! Quick question, when edgeUrl has a custom path (e.g. https://edge.axiom.co/custom/ingest/), the dataset is not appended, only the trailing slash is stripped. Is that intentional? If so, could you document this behavior? The config table currently only mentions "Uses /v1/ingest/{dataset}" without this exception.

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Project	Deployment	Actions	Updated (UTC)
evlog-docs	Ready	Preview, Comment, Open in v0	Feb 24, 2026 1:07pm

[pkg-pr-new]

npm i https://pkg.pr.new/evlog@110

npm i https://pkg.pr.new/@evlog/nuxthub@110

commit: 0858a44

[gabrielelpidio]

@gabrielelpidio Thanks for the PR! Quick question, when edgeUrl has a custom path (e.g. https://edge.axiom.co/custom/ingest/), the dataset is not appended, only the trailing slash is stripped. Is that intentional? If so, could you document this behavior? The config table currently only mentions "Uses /v1/ingest/{dataset}" without this exception.

Hey! Yes, it's intended, added some documentation around it