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.

samples/api/scheduler/policy-run-request.json

@@ -0,0 +1,29 @@
+{
+  "schemaVersion": "scheduler.policy-run-request@1",
+  "tenantId": "default",
+  "policyId": "P-7",
+  "policyVersion": 4,
+  "mode": "incremental",
+  "priority": "normal",
+  "runId": "run:P-7:2025-10-26:auto",
+  "queuedAt": "2025-10-26T14:05:00+00:00",
+  "requestedBy": "user:cli",
+  "correlationId": "req-20251026T140500Z",
+  "metadata": {
+    "source": "stella policy run",
+    "trigger": "cli"
+  },
+  "inputs": {
+    "sbomSet": [
+      "sbom:S-318",
+      "sbom:S-42"
+    ],
+    "advisoryCursor": "2025-10-26T13:59:00+00:00",
+    "vexCursor": "2025-10-26T13:58:30+00:00",
+    "environment": {
+      "exposure": "internet",
+      "sealed": false
+    },
+    "captureExplain": true
+  }
+}