Initial commit: AS4/411 directory and discovery service for Sankofa Marketplace

Co-authored-by: Cursor <cursoragent@cursor.com>

packages/storage/migrations/002_routing_artifacts.sql

@@ -0,0 +1,16 @@
+-- Routing artifacts: BIN tables, GTT tables, participant maps, fallback rules.
+-- See docs/architecture/data-model and protocol_registry.
+
+CREATE TABLE IF NOT EXISTS routing_artifacts (
+  id TEXT PRIMARY KEY,
+  tenant_id TEXT REFERENCES tenants(id) ON DELETE CASCADE,
+  artifact_type TEXT NOT NULL CHECK (artifact_type IN ('bin_table', 'gtt_table', 'participant_map', 'fallback_rules')),
+  artifact_payload JSONB NOT NULL,
+  effective_from TIMESTAMPTZ NOT NULL,
+  effective_to TIMESTAMPTZ,
+  signature TEXT,
+  fingerprint TEXT
+);
+
+CREATE INDEX idx_routing_artifacts_tenant_type ON routing_artifacts(tenant_id, artifact_type);
+CREATE INDEX idx_routing_artifacts_effective ON routing_artifacts(effective_from, effective_to);