[soxofaan]

fixes Open-EO/openeo-geopyspark-driver#1907

[Copilot]

🟢 Approval recommended

The focused fallback preserves existing behavior where applicable, includes regression coverage for both argument cases, and has no identified blocking issues.

No open issues 🎉

What changed in this PR

This PR fixes dry-run validation for load_stac when STAC metadata lacks a band dimension but the caller explicitly supplies bands, addressing issue #1907.

Changes:

• Adds a fallback band dimension with a warning, preserving existing band dimensions.
• Adds regression coverage for requests with and without explicit bands.
• Documents the behavior in the changelog.

File	Description
tests/​test_dry_run.py	Tests band reduction when metadata lacks bands, with and without explicit band selection.
openeo_driver/​dry_run.py	Adds the fallback band dimension and a metadata return type annotation.
CHANGELOG.md	Documents the dry-run fallback and links the reported issue.

_{Review effort: Balanced}

[Copilot]

🟡 Changes recommended

An explicit bands: null causes the new fallback to raise TypeError when metadata lacks a band dimension.

1 open issue

• Avoid iterating over null bands for bandless STAC metadata · New

_{Review effort: Balanced}

[Copilot]

🟢 Approval recommended

The focused fallback has targeted regression coverage, and the only remaining feedback is a non-blocking comment typo.

1 open issue

• Remove stray article in TODO · New

1 resolved since last review

• Avoid iterating over null bands for bandless STAC metadata

_{Review effort: Balanced}

[soxofaan]

PR is ready I think, but merging is blocked by active code freeze