DSLO v0.8 extends the dual-thermodynamic substrate introduced in v0.7 into a full federated geometric system capable of modeling stability, drift, collapse, and recovery across multi-agent, multi-human, and multi-machine environments. While v0.7 formalized the unified substrate manifold and the derived manifold suite (Agency, Teleology, Deployment, Execution, Federation, and Omega), v0.8 expands the lawful transformation system itself. It introduces Federated Operators (FO-Series), Federated Coupling Geometry (FC-Series), Federated Runtime (FR-Series), Federated Simulation Geometry (FS-Series), and Federated Identity Geometry (FI-Series), enabling DSLO to express thermodynamic behavior across groups, institutions, platforms, and synthetic collectives. These additions do not create new manifolds; they extend the operator and coupling system required to act on the bidirectionally closed manifold suite established in v0.7. Federated Operators define lawful transformations across many agents simultaneously, including federated binding, lifting, inversion, folding, collapse-trajectory redirection, recovery-window propagation, and legality-preservation across distributed systems. Federated Coupling Geometry formalizes how drift, pressure, collapse, and recovery propagate through multi-agent networks, revealing lawful patterns of contagion, amplification, suppression, redirection, collapse cascades, and recovery networks. Federated Runtime extends DSUP into multi-system environments, defining constraint propagation, drift-coherence networks, context-window meshes, federated halt conditions, and federated completion cycles. Federated Simulation Geometry provides invariant-restricted simulation modes for multi-agent systems, including federated CLCP, federated topological anchors, and federated legality checks. Federated Identity Geometry formalizes group-level identity boundaries, coherence fields, continuity bands, legality envelopes, and curvature stability under distributed load. Together, these components transform DSLO from a dual-system geometry into a federated thermodynamic discipline. v0.8 provides the lawful operator system required to analyze, stabilize, and simulate multi-agent behavior across human, machine, and synthetic substrates, completing the transition from individual thermodynamic geometry to collective thermodynamic ecology.