Feature Request: Programmatic Column Description Patching via JSONPatch API

Summary

We need API-level support for patching column descriptions in table entities via JSONPatch.

Current behavior: Only table-level fields can be patched. Column descriptions are architecturally read-only via /api/v1/entities/{tableId} PATCH endpoint.

Desired behavior: JSONPatch operations should accept:

[{"op":"add","path":"/columns/0/description","value":"<p>Description</p>"}]

Use Case

Enterprise data governance: bulk-populating column metadata for data products via automation. Blocks OpenMetadata adoption as column SSOT.

Workarounds Tried & Failed

• MCP patch_entity: 'Patch cannot be null or empty'
• Direct REST PATCH: HTTP 404
• PUT with full entity: HTTP 404

Acceptance Criteria

Any of: JSONPatch column support, bulk endpoint, first-class column entities, or BigQuery schema comment sync

Environment: OpenMetadata (BQ connector)