Sarcopenia in Inflammatory Bowel Disease: Prevalence, Mechanisms, Detection, Adverse Clinical Impact and Targetable Care Gaps—A Narrative Review Supported by a Structured Literature Search - Alexandra-Ioana Vasilachi-Lulache; Petruta Violeta Filip; Cosmin Alexandru Ciora; Eugen-Florin Georgescu; Laura Sorina Diaconu; Anca Roxana Băleanu; Corina Silvia Pop (Life, 2026)