feat: add Reachability Center and Why Drawer components with tests

- Implemented ReachabilityCenterComponent for displaying asset reachability status with summary and filtering options.
- Added ReachabilityWhyDrawerComponent to show detailed reachability evidence and call paths.
- Created unit tests for both components to ensure functionality and correctness.
- Updated accessibility test results for the new components.

docs/api/gateway/samples/orchestrator-quotas.json

@@ -0,0 +1,44 @@
+{
+  "items": [
+    {
+      "quotaId": "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa",
+      "tenantId": "tenant-default",
+      "jobType": "pack-run",
+      "maxActive": 10,
+      "maxPerHour": 200,
+      "burstCapacity": 20,
+      "refillRate": 1,
+      "currentTokens": 12.5,
+      "currentActive": 2,
+      "currentHourCount": 18,
+      "paused": false,
+      "pauseReason": null,
+      "quotaTicket": null,
+      "createdAt": "2025-11-01T00:00:00Z",
+      "updatedAt": "2025-12-10T00:00:00Z",
+      "updatedBy": "user:demo"
+    },
+    {
+      "quotaId": "bbbbbbbb-bbbb-bbbb-bbbb-bbbbbbbbbbbb",
+      "tenantId": "tenant-default",
+      "jobType": "export",
+      "maxActive": 3,
+      "maxPerHour": 60,
+      "burstCapacity": 6,
+      "refillRate": 0.5,
+      "currentTokens": 1.5,
+      "currentActive": 3,
+      "currentHourCount": 58,
+      "paused": true,
+      "pauseReason": "Maintenance window",
+      "quotaTicket": "OPS-1234",
+      "createdAt": "2025-11-15T00:00:00Z",
+      "updatedAt": "2025-12-11T00:00:00Z",
+      "updatedBy": "user:ops"
+    }
+  ],
+  "count": 2,
+  "continuationToken": null,
+  "etag": "\"orch-quotas-v1\"",
+  "traceId": "trace-sample"
+}