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+Interoperability Overview
+
+- EnergiBridge: Canonical bridge mapping NovaPlan primitives to a CatOpt-like interoperability IR. Enables adapters from grids, space robotics, and orbital domains to plug in with minimal rewiring.
+  - Objects: LocalProblems (per-asset tasks)
+  - Morphisms: SharedVariables/DualVariables (versioned signals and priors)
+  - PlanDelta: incremental plan changes with metadata (timestamp, author, contract_id, signature)
+  - PrivacyBudget/AuditLog blocks for governance and provenance
+  - Time monoid for rounds and delta-sync on reconnects
+  - Graph-of-Contracts (GoC) registry for versioned adapters and data schemas
+  - Replay protection via per-message versioning/timestamp/nonce
+
+- Minimal DSL seeds for interoperability:
+  - LocalProblem { id, domain, assets, objective, constraints }
+  - SharedVariables { forecasts, priors, version }
+  - PlanDelta { delta, timestamp, author, contract_id, signature }
+  - DualVariables { multipliers }
+  - PrivacyBudget { signal, budget, expiry }
+  - AuditLog { entry, signer, timestamp, contract_id, version }
+  - PolicyBlock { safety/exposure controls }
+
+- MVP wiring (2–3 agents to start, 8–12 weeks):
+  - Phase 0: protocol skeleton + two starter adapters over TLS; lightweight ADMM-lite local solver; deterministic delta-sync with islanding replay; toy joint objective
+  - Phase 1: governance ledger scaffold; identity layer (DID/short-lived certs); secure aggregation defaults for SharedVariables
+  - Phase 2: cross-domain demo (simulated satellite-ground domain); publish NovaPlan SDK bindings; tiny contract example; reference transport
+  - Phase 3: hardware-in-the-loop (Gazebo/ROS) across 2–3 devices; KPI dashboards for convergence speed, delta-sync latency, auditability
+
+- Security, governance and adapters marketplace:
+  - DID-based identities or short-lived certs; per-message crypto-tags; tamper-evident governance logs; policy hooks for data exposure
+  - Conformance harness and starter adapters to accelerate onboarding
+
+- Cross-domain reuse:
+  - Canonical EnergiBridge to enable interoperability with GridVerse/Open-EnergyMesh ecosystems; seed a minimal 1-page contract example to invite adapters
+
+- Metrics to track:
+  - Time-to-convergence under simulated latency, delta-size per exchange, reconciliation determinism on reconnects, adapter conformance, governance audit coverage
+
+This repository already includes: LocalProblem DSL, adapters stubs, and a test-aware bridge.