Title in journal's metadata should contain year and month

[chnoack]

Issues

• I have checked existing issues and there are no existing ones with the same request.

Feature description

When I inject meta data to a journal page currently the title corresponds to the single file name: e.g. for a journal file journal/2025/06/01.norg the title is automatically set to 01.
I think it would be nicer to have it set to the whole data in ISO format: 2025-06-01

Help

Yes, but I don't know how to start. I would need guidance

Implementation help

No response

[chnoack]

This probably would be solved also together with: #714