Distinguish Viili nitrogen cross-feeding from AI-2 regulation #1915

Finding

CommunityMech:000408: fungal nitrogen provision is experimental cross-feeding. Increased bacterial AI-2/luxS and AI-2 perturbation support signaling regulation, not fungal delivery of AI-2 as a nutrient. Leave the regulatory node untyped, qualify the nitrogen-to-signaling bridge and its unresolved mediation, and preserve positive AI-2-to-EPS support and the tested three-member EPS maximum. Do not generalize to global EPS superiority or erase the validated nutrient effect.

Evidence And Limits

https://pubmed.ncbi.nlm.nih.gov/42372608/

Whole canonical records and all graph snippets read after a complete two-root baseline. Fresh primary abstracts and Crossref identities checked. Watermelon/wetland main-body XML, methods, results, discussion and captions read; no figure-pixel, supplementary-file, model-code or raw-data audit. Viili/sludge changes are abstract-bounded; bounded DOI/publisher searches did not yield an inspected open full text. No access bypass or cache imports.

Fresh all-state issue titles/bodies searched; matching1014/1015/1452/644 read and distinct. Hidden/ignored-inclusive local searches exclude.git,docs,site,reference caches,.env; not an exhaustive historical PR-comment search.

Lifecycle

Address in batch118; close only after protected-main merge. Self-adversarial review is not independent approval.