Subjectivity-Intersection Braid Quantum Gravity: From a Finite Pointed-Braid Source to Quantum Structure, Lorentz Geometry, and Strong-Curvature Spacetime — A Constructive Refutation of Objectivist Primacy

Subjectivity-Intersection Braid Quantum Gravity is presented as a source-explicit mathematical quantum-gravity candidate. From one explicitly specified finite standpoint-bearing pointed-Braid source class, the construction generates a finite quantum carrier, Born-type probabilities, observable algebra, CPTP evolution, a four-direction Lorentz carrier, continuous metric response, finite Ward balance, and iterable matter–geometry backreaction. In the declared local, conservative, low-curvature class, common metric variation yields Gμν = (3/5)Tμν. The factor 3/5 is derived as the normalized rank-three matter summand of a complementary 3+2 source split, rather than inserted or fitted. On a local regular noncaustic branch, the theory supplies a source-perfect ADM/HDA–BFV parent, a two-polarization physical projector, metric–Euler trajectory convergence, and finite-depth BV quantum consistency. A fixed source calculation also outputs a CKM matrix; its registered rerun is reported as a retrospective reproduction, not a prospective prediction. In a separately declared static spherical sector, the source-derived action yields a regular, causally complete black-bounce geometry. The work is a collection of scoped constructions with common source provenance, not an unconditional end-to-end theorem. Independent replication, physical-sector selection, infinite-depth quantum measure, generic singular continuation, absolute SI calibration, and prospective experimental confirmation remain open.