This QSTH 8.XC working publication serves as the closure note of the QSTH 8.x condensation sequence, titled The Condensation of Information into Structure. Its purpose is not to introduce a new independent physical claim, but to provide a structured synthesis, map, and closure discipline for the complete QSTH 8.x line: from the opening horizon-invariant and Mendeleev audit layers, through admissibility, dimensional scaffolding, Temporal Ledger, O-Dim / 0D root formation, Lambda_lock, spin-locking, Schrödinger-level locking dynamics, Hessian settlement, and photon-level record transfer. Within the QSTH framework, the 8.x sequence asks how information may become structure. It does so through a layered chain: O-Dim -> 0D -> I-Dim -> psi -> admissibility -> Lambda_lock -> stable record -> Hessian settlement -> structure -> Temporal Ledger This closure note summarizes the conceptual and methodological role of the major 8.x publications, including QSTH 8.x Opening Note, QSTH 8.0 Horizon Set of Invariants, QSTH 8.1 Main Mendeleev Audit Atlas, QSTH 8.2 Verification and Operational Window, QSTH 8.M Mathematical Method Note, QSTH 8.3 Geometry of Convergence of Paths, QSTH 8.4 Kinematics of Admissibility, QSTH 8.5 Temporal Ledger, QSTH 8.5.KEY, QSTH 8.6 O-Dim and 0D Root Publication, QSTH 8.6.XS, QSTH 8.6.XP, QSTH 8.7, QSTH 8.8.S, QSTH 8.9.XS2, QSTH 8.10.H, and QSTH 8.11. The publication identifies the role of each layer: admissibility, verification, dimensional condensation, temporal readability, ontological depth, possibility ledger, objective settlement, technical locking, spin orientation, equation-level locking dynamics, Hessian stability, and photon-level record transfer. A central closure principle is that QSTH 8.XC is not another branch after 8.11. It is the map that seals the 8.x condensation architecture before the later transition toward horizon-scale closure and the future M-independent horizon framework. The main candidate relations summarized in the closure note include: integral Gamma_lock(t) dt >= Lambda_lock -> R_stable Gamma_lock = Gamma_0 + Gamma_spin + Gamma_wall + Gamma_entropy H_eff = nabla^2 Phi_lock H_eff > 0 -> stable settlement Photon = minimal transferable electromagnetic record These expressions are not presented as confirmed physical laws. They are candidate modeling relations and interpretive bridges intended for future formalization, toy-model construction, numerical testing, falsification, and comparison with null models. This publication belongs to the QSTH CORE/CAND/SUPPORT/FUTURE framework. It should be read as a structured working publication, not as a confirmed physical model. Its function is to close the 8.x sequence as a coherent map and to prepare the methodological transition toward future horizon-scale work. Short description QSTH 8.XC closes the QSTH 8.x sequence The Condensation of Information into Structure. It maps the full chain from O-Dim, 0D, I-Dim, admissibility, Lambda_lock, spin-locking, Hessian settlement, and photon record toward Temporal Ledger and future horizon-scale closure. Methodological status This publication is part of the QSTH CORE/CAND/SUPPORT/FUTURE framework. It is a closure and synthesis document, not a confirmed physical model. Its role is to organize the QSTH 8.x condensation sequence, clarify the status of its main concepts, identify candidate equations and modeling entry points, and separate completed 8.x architecture from future M-independent horizon work. Computability note Several elements summarized in this closure note are already suitable for toy-model exploration. Candidate Gamma_lock functions can be integrated over finite transition windows. Gate-off limits can be tested. Spin contributions can be switched on and off. Hessian settlement can be modeled once a candidate lock-potential or settlement landscape is defined. These are not yet confirmed physical laws. They are structured modeling entry points for future numerical testing, falsification, comparison with null models, and scientific collaboration. One-line public summary QSTH 8.XC closes the 8.x sequence The Condensation of Information into Structure by mapping the transition from possibility and admissibility to stable record, Hessian settlement, photon transfer, and future horizon-scale closure. Safe Zenodo equation block O-Dim -> 0D -> I-Dim -> psi -> admissibility -> Lambda_lock -> stable record -> Hessian settlement -> structure -> Temporal Ledger integral Gamma_lock(t) dt >= Lambda_lock -> R_stable Gamma_lock = Gamma_0 + Gamma_spin + Gamma_wall + Gamma_entropy H_eff = nabla^2 Phi_lock H_eff > 0 -> stable settlement Photon = minimal transferable electromagnetic record These expressions are not presented as confirmed physical laws. They are candidate modeling relations and interpretive bridges intended for future formalization, toy-model construction, numerical testing, falsification, and comparison with null models. Diamond sentence QSTH 8.XC does not add another stone to the chain. It seals the map of the chain: from possibility to record, from record to structure, and from structure toward the horizon where future closure questions begin. Notes field This record closes the QSTH 8.x publication sequence, titled The Condensation of Information into Structure. It summarizes the 8.x path from the Horizon Set and Mendeleev Audit Atlas through admissibility, dimensional condensation, Temporal Ledger, O-Dim / 0D root formation, Lambda_lock, spin-locking, Schrödinger-level locking dynamics, Hessian settlement, and Entropic Genesis of Photon. This closure note also clarifies the boundary between QSTH 8.x and the future M-independent horizon framework. M-independent horizon is not treated here as the next local step after Hessian settlement, but as a later horizon-scale closure question for already settled structure.