Add unit tests for PackRunAttestation and SealedInstallEnforcer

- Implement comprehensive tests for PackRunAttestationService, covering attestation generation, verification, and event emission.
- Add tests for SealedInstallEnforcer to validate sealed install requirements and enforcement logic.
- Introduce a MonacoLoaderService stub for testing purposes to prevent Monaco workers/styles from loading during Karma runs.

docs/api/console/samples/console-export-request.json

@@ -0,0 +1,16 @@
+{
+  "scope": {
+    "tenantId": "tenant-default",
+    "projectId": "sre-prod"
+  },
+  "sources": [
+    { "type": "advisory", "ids": ["CVE-2024-12345", "CVE-2024-23456"] },
+    { "type": "vex", "ids": ["vex:tenant-default:jwt-auth:5d1a"] },
+    { "type": "policy", "ids": ["policy://tenant-default/runtime-hardening"] },
+    { "type": "scan", "ids": ["scan::tenant-default::auth-api::2025-11-07"] }
+  ],
+  "formats": ["json", "ndjson", "csv"],
+  "attestations": { "include": true, "sigstoreBundle": true },
+  "notify": { "webhooks": ["https://hooks.local/export"], "email": ["secops@example.com"] },
+  "priority": "normal"
+}