Preview the diagnostic snapshot

Exactly what a feedback submission would attach, so consent is informed: app version and channel, hardware profile, engine status, health checks, license state, telemetry state, and a scrubbed log tail. Requires the **viewer** role.

curl -X GET "https://example.com/api/feedback/diagnostics"

{  "app": {},  "host": {},  "engine": {},  "health": [    {      "id": "string",      "label": "string",      "status": "ok",      "detail": "string",      "category": "permissions"    }  ],  "license": {},  "telemetry": {},  "logTail": [    "string"  ]}