DENS — the Density–ENergy of Space: an energy-first relational substrate, the six-axiom T·S·E census, and the dissolution of the space–time weld

Modern physics is built on a weld. In 1908 Minkowski fused space and time into a single four-dimensional manifold, and that fusion — enormously productive — has been the unexamined floor of theoretical physics ever since. This paper proposes that the weld is a founding error: it counts two things as one, and in doing so it exiles a third. Space and time are distinct axes of measure; energy is a distinct axis again; and the dark sector, the cosmological-constant catastrophe, the problem of time, and quantum nonlocality are not four unrelated mysteries but the predictable symptoms of a mis-count. We develop DENS — the Density–ENergy of Space — an energy-first framework built on a pre-geometric relational substrate: a discrete medium of ordered relations (the dependency order ≺) from which space, time, and energy emerge as separate readouts. On this floor the Universe's measurable quantities are enumerated exactly: a symmetric census of the three axes Time, Space and Energy yields six cells and no more — three diagonal units (duration, extent, intensity) and three off-diagonal constants (c, ℏ, G) — and the census is closed by a stated principle, in the manner of a principle theory rather than a constructive one. Each off-diagonal constant binds two axes while remaining blind to the third; the three blind spots are, one for one, the three famous open problems. Read this way the two best-measured pure numbers in physics fall out of the floor's geometry: the fine-structure constant 1/α = 137.036 (Wyler's bounded-domain reading, independently grounded by Smilga) and the proton-to-electron ratio 6π⁵ = 1836, with the residual 18.8 ppm identified as binding energy rather than as a failure. The dark sector dissolves into one medium energy read at two scales — the empirical heart of which is the companion paper's a₀ = A√ρ result. We hold DENS and the incumbent to one bar throughout, and we are explicit about what is derived, what is grounded, and what is still owed. The claim is not that the weld was useless — it worked — but that what it welded was never one thing, and that un-welding it puts energy back on the books as an axis in its own right.