fix(status): add NVIDIA_API_KEY to hermes status API keys display

Closes #16082

The `hermes status` command listed provider API keys under the
◆ API Keys section but NVIDIA_API_KEY was absent. Users configured
with NVIDIA NIM had no way to verify their key was set from status
output. Add it alongside the other inference provider keys.

hermes_cli/status.py

@@ -125,6 +125,7 @@ def show_status(args):
     keys = {
         "OpenRouter": "OPENROUTER_API_KEY",
         "OpenAI": "OPENAI_API_KEY",
+        "NVIDIA": "NVIDIA_API_KEY",
         "Z.AI/GLM": "GLM_API_KEY",
         "Kimi": "KIMI_API_KEY",
         "StepFun Step Plan": "STEPFUN_API_KEY",