[WSL2][CLI&UX] nemohermes status exits non-zero despite printing a fully healthy status report

## Description

`nemohermes status` prints a complete, healthy status report (phase Ready, inference healthy, harness/agent info, policy dump) with no visible error text anywhere in stdout or stderr, but the command still exits with code 1.

Platform scope: Reproduced on WSL2 (x86) only; other platforms not tested.
Regression: Unknown — earlier versions not tested.

## Environment

```text
Device: WSL2 x86_64 CI runner
OS: WSL2 (Ubuntu on Windows)
Architecture: x86_64
OpenShell CLI: 0.0.106
NemoClaw: v0.0.119
```

## Steps to Reproduce

1. Onboard a sandbox with the Hermes agent
2. Run `nemohermes status`

## Expected Result

When the printed status report shows no errors (Ready phase, healthy inference, etc.), the command should exit 0.

## Actual Result

Command exits 1 despite the full printed status report showing no errors:

```text
Active gateway set to 'nemoclaw'

Sandbox-scoped status for '':
Sandbox:
Model: nvidia/nemotron-3-super-120b-a12b
Provider: nvidia-prod
Inference: healthy (the sandbox inference route)
Inference (route reachability): reachable (the sandbox inference route)
Inference (upstream): healthy (the NVIDIA Endpoints upstream API)
Serving process (hermes agent gateway): not checked
Host GPU: yes
Sandbox GPU: enabled (auto) (CUDA verified)
OpenShell: 0.0.106 (docker)
Policies: pypi
Harness: Hermes Agent (gateway)
SSH sessions: none
Permissions: not configured (default mutable state)
Agent: Hermes Agent v0.19.0

Phase: Ready
```

## Logs

Not captured