Monad Cosmology: spacetime, gravity and the constants of nature from a jammed packing of structureless Planck-scale monads

Spacetime here is a jammed packing of identical spheres one Planck diameter across — monads — entangled with their neighbours and updated once per Planck time; isotropy forces the sphere, the disorder and the spin-½ Heisenberg interaction. Newton's constant is not fundamental but the vacuum's entanglement density, G = 1/(4η_A), and counting entanglement across a surface returns the black-hole area law with a computable coefficient. That makes the central identification — monad diameter is Planck length — testable rather than a calibration; it sits four standard errors low. One substance carries the dark sector, split by a theorem and not by hand: dark energy is the medium counted globally, ρ_Λ/ρ_P = (ℓ_P/R)^2 with w = −1 exactly, and dark matter the same medium in local circulation, its shear variance read as mass, tracking no baryons and diluting as a^(−3). Its carrier is computed, not fitted: the sector holds two fewer free parameters than any particle account, and any direct detection ends the model. Averaging closes by an identity: σ_2 of a Jacobian is a null Lagrangian, so inhomogeneity does not back-react. Space is finite and closed, its curvature predicted into a two-sided window ΛCDM leaves free. Neither black holes nor the Big Bang has a singularity — one mechanism, two thresholds — and where the fabric tears, what it carried is destroyed: energy and information are not globally conserved. The area and first laws return the Hawking temperature exactly, yet the model rejects Hawking radiation — evaporation is the tear, and a primordial hole emits no gamma signature. There is no mediating graviton; what radiates is a pattern in the entanglement. The one load-bearing assumption is supersymmetry below ~10^9 GeV, unobserved; matter is a separate theory built on this one, deferred not missing.