Assign a lead for transcriptomics extension

Transcriptomics was reviewed against IHEC's metadata fields and judged largely over-specific or redundant with existing core properties, then deprioritised in February 2026 for lack of a driver-project champion willing to lead it. Needs a volunteer lead before any further work can start.
Coline Thomas (EGA) has relevant context (EGA handles both sequencing and array-based transcriptomics data) if a lead is found.

Start by reviewing the issue text, especially the IHEC metadata review and the reasons transcriptomics was deprioritised. Contact the project community and Coline Thomas at EGA to identify a driver-project champion. Done means a volunteer lead is named and can coordinate any future transcriptomics extension work.

Written by the indexing model from the issue text.