Add Policy DSL Validator, Schema Exporter, and Simulation Smoke tools

- Implemented PolicyDslValidator with command-line options for strict mode and JSON output.
- Created PolicySchemaExporter to generate JSON schemas for policy-related models.
- Developed PolicySimulationSmoke tool to validate policy simulations against expected outcomes.
- Added project files and necessary dependencies for each tool.
- Ensured proper error handling and usage instructions across tools.

docs/events/samples/scheduler.graph.job.completed@1.sample.json

@@ -0,0 +1,36 @@
+{
+  "eventId": "4d33c19c-1c8a-44d1-9954-1d5e98b2af71",
+  "kind": "scheduler.graph.job.completed",
+  "tenant": "tenant-alpha",
+  "ts": "2025-10-26T12:00:45Z",
+  "payload": {
+    "jobType": "build",
+    "status": "completed",
+    "occurredAt": "2025-10-26T12:00:45Z",
+    "job": {
+      "schemaVersion": "scheduler.graph-build-job@1",
+      "id": "gbj_20251026a",
+      "tenantId": "tenant-alpha",
+      "sbomId": "sbom_20251026",
+      "sbomVersionId": "sbom_ver_20251026",
+      "sbomDigest": "sha256:0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
+      "graphSnapshotId": "graph_snap_20251026",
+      "status": "completed",
+      "trigger": "sbom-version",
+      "attempts": 1,
+      "cartographerJobId": "carto_job_42",
+      "correlationId": "evt_svc_987",
+      "createdAt": "2025-10-26T12:00:00+00:00",
+      "startedAt": "2025-10-26T12:00:05+00:00",
+      "completedAt": "2025-10-26T12:00:45+00:00",
+      "metadata": {
+        "sbomEventId": "sbom_evt_20251026"
+      }
+    },
+    "resultUri": "oras://cartographer/offline/tenant-alpha/graph_snap_20251026"
+  },
+  "attributes": {
+    "cartographerCluster": "offline-kit",
+    "plannerShard": "graph-builders-01"
+  }
+}