Black Holes as Frozen Informational Phases: Evaporation, Remnants and a Dynamical Cosmological Constant

A unified informational description of black holes is developed within the TAGC–LQG– RG framework. Event horizons are reinterpreted as frozen informational phases that emerge when complexity reaches a universal critical threshold. Hawking radiation arises as an effective phenomenon associated with irreversible information erasure, whilst evaporation terminates smoothly at a stable remnant. Furthermore, it is shown that the accumulated informational cost of horizon formation contributes dynamically to the cosmological constant, establishing a direct link between black holes and cosmology. The decoherence rate, thermal scale separation, information flow during evaporation, and the informational role of charge and rotation are explicitly clarified. This work presents a consistent phenomenological framework that provides testable observational predictions, validated through independent numerical simulation, without constituting a complete microscopic derivation from first principles.