- CS8601: Add null-forgiving operator on guarded dictionary assignments
in cmdlets where IsNullOrEmpty check precedes the assignment
- CS8602: Add Assert.NotNull after JObject["data"] in xUnit model tests
(JToken indexer returns nullable on net48)
- CS8604: Add null-forgiving on guarded arguments in NodeService,
WaitPveTaskCmdlet, GetPveTemplateCmdlet, and auth test parameters
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
144 tests covering authentication (version parsing, session expiry, token
format validation), model deserialization from real PVE 8.x/9.x API JSON
fixtures, and service layer behavior. Includes TestHelper with mock
HttpMessageHandler factory and 21 JSON fixture files.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>