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-manifest.json

@@ -0,0 +1,36 @@
+{
+  "version": "2025-12-06",
+  "exportId": "console-export::tenant-default::2025-12-06::0007",
+  "tenantId": "tenant-default",
+  "generatedAt": "2025-12-06T12:11:05Z",
+  "items": [
+    {
+      "type": "advisory",
+      "id": "CVE-2024-12345",
+      "url": "https://exports.local/tenant-default/0007/CVE-2024-12345.json?sig=...",
+      "sha256": "cafe0001..."
+    },
+    {
+      "type": "vex",
+      "id": "vex:tenant-default:jwt-auth:5d1a",
+      "url": "https://exports.local/tenant-default/0007/vex-jwt-auth.ndjson?sig=...",
+      "sha256": "cafe0002..."
+    },
+    {
+      "type": "policy",
+      "id": "policy://tenant-default/runtime-hardening",
+      "url": "https://exports.local/tenant-default/0007/policy-runtime-hardening.json?sig=...",
+      "sha256": "cafe0003..."
+    },
+    {
+      "type": "scan",
+      "id": "scan::tenant-default::auth-api::2025-11-07",
+      "url": "https://exports.local/tenant-default/0007/scan-auth-api.ndjson?sig=...",
+      "sha256": "cafe0004..."
+    }
+  ],
+  "checksums": {
+    "manifest": "c0ffee...",
+    "bundle": "deadbeef..."
+  }
+}