fix: yaml eccode annotation handling#613
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EC numbers are a standard MIRIAM cross-reference, so cobrapy and geckopy read them from annotation['ec-code'] (a list). RAVEN wrote them as a top-level reaction `eccodes` key, which plain cobra.io ignores -- so EC codes never reached the annotation['ec-code'] location geckopy reads from, and raven-python had to special-case the top-level key. writeYAMLmodel now emits EC numbers inside the per-reaction `annotation` block as `ec-code`, fused with rxnMiriams the same way metabolite SMILES already is (writeAnnotation generalised to 'met' and 'rxn'); always a list, even for a single code, to match cobrapy/raven-python/geckopy. readYAMLmodel gains a `case 'ec-code'` that captures the annotation form into model.eccodes; the legacy top-level `eccodes` key is still read for older files. Verified end-to-end on yeast-GEM (MATLAB R2024b): read old top-level eccodes -> write annotation ec-code -> read back keeps all 2411/4102 reactions' EC codes unchanged. A permanent EC-code case in importExportTests.m would lock this in. Pairs with raven-python io.yaml (same change there).
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This was referenced Jun 7, 2026
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develop3as target branch, and will be resolved with a squash-merge.mainas target branch, and will be resolved as descriped here.