Vocabulary conformance and citation network rebuild. The paper was written during the Series-M phase of the program when geometric foundations were framed as abstract hypotheses M0–M6. Those hypotheses correspond to content later consolidated into the published DG Books; this revision retires the M-framing and cites the Books directly. Vocabulary updates throughout the paper bring terminology into conformance with current DG usage: "rank-2 spatial decomposition" → "longitudinal–transverse decomposition" (Book 5); "radial coordinate" → "longitudinal shell index" (Book 9); "phase residue" → "phase coordinate" (Book 6); "temporal displacement" → "geometric-time offset" (Book 5); "developmental surface" → "axis-field potential" (Book 5); "oscillatory surface" → "gateway potential" (Book 6); "helical movement operator MM M" → "developmental flow operator FF F"; foliation identified as the shell foliation of the discrete substrate (Book 9). Forward references to "Series III and IV" are updated to Paper 3 (Spectral Coherence on the Developmental Attractor) and Paper 4 (Convergence of the Developmental Euler Product), both now published. The bibliography is rebuilt from three entries (Benford, Temam, Hale) to twelve, citing all relevant Books and Papers with DOIs. The abstract global attractor theorem, the dissipativity-and-asymptotic-compactness proof structure, the existence-and-uniqueness theorem, and the stratification corollary are unchanged in content — only vocabulary, attribution, and citation structure are updated.

A global attractor existence theorem for the discrete developmental flow of Developmental Geometry (DG). The configuration space is the longitudinal–transverse decomposition of the developmental manifold (Book 5) restricted to the discrete substrate (Book 9), with phase coordinate from gateway phenomena (Book 6) and geometric-time offset (Book 5). The developmental flow operator combines axis-field drift with gateway-driven phase update, generating a discrete semigroup. Monotone decrease of the total developmental potential Ξ=Φ+Ψ\Xi = \Phi + \Psi Ξ=Φ+Ψ along trajectories establishes dissipativity; the discrete structure of the substrate gives asymptotic compactness. The abstract global attractor theorem yields a unique stratified attractor Adev\mathcal{A}_{\text{dev}} Adev that is compact, strictly invariant, and attracts every bounded subset of the configuration space. The attractor inherits the shell foliation of the discrete substrate and is the canonical limiting object underlying the spectral results of Paper 3 (Spectral Coherence) and the Euler-product convergence of Paper 4, which use the analytic machinery of the Bochner Laplacian D=∇∗∇\mathcal{D} = \nabla^*\nabla D=∇∗∇ (Book 11). Companion to DG Books 0, 5, 6, 7, 8, 9, 11 and to Papers 3 and 4.