A console run (incl. the tray→terminal fallback) aborts with exit 134 when the tool's Status getter throws #79

What's wrong

ConsoleRunner.Run prints its startup line through DescribeRun (TrayApp/ConsoleRunner.cs:91-100), which calls TrayAppDefinition.Describe() (TrayApp/TrayAppDefinition.cs:73):

public string Describe() => Status?.Invoke() ?? $"{DisplayName} is running";

Nothing guards the getter here. #62/#64 made --status survive a throwing getter by reading it through StatusReport.Read, and #25 covers the tray menu. The console path still calls it bare. The exception leaves Run after the finally runs OnStop, then leaves TrayAppBuilder.RunAsync, which has no handler, so the process dies with an unhandled exception. That breaks the 0/1/2 exit-code contract. The same path is reached from the fallback in RecoverFromTrayFailure, when the tray can't start and the run "stays in the terminal instead".

Reproduction

.Status(() => throw new InvalidOperationException("systemd-inhibit was not found on PATH")) with OnStart/OnStop, run with --no-tray --for 1s:

>>> OnStart
>>> OnStop
Unhandled exception. System.InvalidOperationException: systemd-inhibit was not found on PATH
   at ktsu.TrayApp.TrayAppDefinition.Describe() in TrayAppDefinition.cs:line 73
   at ktsu.TrayApp.ConsoleRunner.DescribeRun(...) in ConsoleRunner.cs:line 97
exit=134

Running with --tray and no DISPLAY gives the same result once it has printed "Staying in the terminal instead."

#62 gave the reason for its own fix: a getter is likely to throw for the same reason the tool can't work. A missing helper is exactly the case where the console fallback gets used, and there it crashes.

Suggested fix / acceptance criteria

• Read the status in DescribeRun through StatusReport.Read(app.Status), or have Describe() catch non-fatal exceptions (FatalError.IsNotFatal). It then prints e.g. repro: error: <message>. Press Ctrl+C to stop.
• A throwing getter never ends the process with an unhandled exception. The run either continues or returns exit code 1 with a message.
• ConsoleRunnerTests.Run_WhenTheRunItselfThrows_StillStops currently expects the exception to propagate from Run. Adjust it, or add a test for a throwing Status specifically.