Logical Closure of the Cosmological Constant Problem in Flux-Fixed GR (GCV): A modular proof spine and falsifier map for the GR-exact branch

Version note (v1.2.0)This version reframes the record as a compact logical map of the Gauged Constant Vacuum-Mode (GCV) cosmology programme after completion of the core CCP modules. The paper explains how the structural GR-exact branch, the semi-explicit UV existence benchmark, magnitude localisation, and positive-Λ realisation combine to support the programme-level cosmological constant problem (CCP) closure claim. No new numerical results are introduced; the note summarises the logical structure and falsifier map of the completed module stack. This record provides a concise, journal-neutral logical overview of the GCV framework on its GR-exact branch and the module structure supporting the CCP closure claim.…