Add distributed workload protocol

scimesh/distributed/__init__.py

@@ -0,0 +1,28 @@
+"""Coordinator-independent contracts for distributed SciMesh workloads.
+
+This package defines the typed plan and reduction boundary shared by future
+planners, worker adapters, and coordinator bridges.  It intentionally has no
+network, database, or coordinator imports.
+"""
+
+from .models import (
+    ArtifactReference,
+    CompletedPartial,
+    DistributedPlan,
+    FinalResult,
+    PlannedTask,
+)
+from .registry import DistributedWorkloadRegistry, PlanningService, WorkloadDescription
+from .workload import DistributedWorkload
+
+__all__ = [
+    "ArtifactReference",
+    "CompletedPartial",
+    "DistributedPlan",
+    "DistributedWorkload",
+    "DistributedWorkloadRegistry",
+    "FinalResult",
+    "PlannedTask",
+    "PlanningService",
+    "WorkloadDescription",
+]