Add support for Databricks + Iceberg REST

[Nick (stanch)]

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[claude]

Style review

Overall the changes read well and match the surrounding content. There are a few issues to fix:

1. Missing release note
This PR adds new platform support (Iceberg REST catalog with Databricks Unity Catalog and Snowflake Horizon Catalog, plus a new Databricks integration path via Iceberg on AWS). CLAUDE.md says: "New functionality needs a release note… If a docs change documents a new feature, a behavior change, or new platform/warehouse support, add a release note in the same PR (or a follow-up PR, linked)."
Fix: add release-notes/<slug>/index.md following release-notes/_README.md, or link a follow-up PR.

2. Avoid "currently"
docs/destinations/warehouses-lakes/databricks/index.md:

³ Iceberg+Databricks combination is currently not supported for GCP pipelines.

The style guide says: "Stay in the present tense. Never use 'currently', 'now', 'in the future'…". The + shorthand also reads informally.
Fix: _³ The Iceberg and Databricks combination isn't supported for GCP pipelines._

3. Use absolute paths for new internal links
docs/destinations/warehouses-lakes/databricks/index.md:

See [Iceberg](../iceberg/index.md).
Follow the instructions for [Iceberg](../iceberg/index.md#getting-started).

CLAUDE.md says: "Use absolute paths from docs root: /docs/sources/trackers/.../index.md".
Fix: use /docs/destinations/warehouses-lakes/iceberg/index.md and /docs/destinations/warehouses-lakes/iceberg/index.md#getting-started. The neighboring Delta Lake links use the same relative pattern, so you could convert those too while you're there. The #getting-started anchor exists.

External links: the touched external URLs (https://docs.aws.amazon.com/glue/ and https://iceberg.apache.org/rest-catalog-spec/) both resolve.

Removing the duplicate default attributes from the Databricks tabs is a good fix.

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	documentation	c7bf402	Commit Preview URL Branch Preview URL	Oct 09 2026, 11:38 AM