[Multiple Platforms][Onboard] NemoClaw does not pull Ollama model during onboard when no models are present #6038

Description

When running nemoclaw onboard with Ollama installed but no models pulled, NemoClaw should detect the absence of models, prompt the user to select a model, and pull it during onboard. On DGX Spark, the model pull step is silently skipped — model count remains 0 after onboard completes. On ubuntu22/ubuntu24/DGX Station, the interactive wizard also fails to complete (wizard navigation timeout), suggesting the onboard flow for the Ollama-no-models case is broken across multiple platforms.

Environment

Device:        DGX Spark (GB10) / Ubuntu 22.04 / Ubuntu 24.04 / DGX Station
OS:            Linux
Architecture:  x86_64 / arm64
NemoClaw:      v0.0.69
OpenClaw:      2026.5.27
Ollama:        installed, 0 models pulled

Steps to Reproduce

1. Install NemoClaw v0.0.69 on DGX Spark
2. Ensure Ollama is installed with no models pulled (ollama list returns empty)
3. Run: nemoclaw onboard
4. Select Ollama as inference provider
5. When prompted, select a model to pull
6. Complete onboard
7. Run: ollama list

Expected Result

NemoClaw pulls the selected Ollama model during onboard. After onboard completes, ollama list shows at least 1 model.

Actual Result

On DGX Spark (non-interactive test): Onboard completes but model count is 0.

Test failure: "NemoClaw should have pulled the selected model during onboard: expected 0 to be greater than 0"

On ubuntu22/ubuntu24/DGX Station (interactive test): Wizard navigation times out — onboard never reaches completion step.

Test failure: "Not all wizard steps completed."

Logs

CI pipeline 56214563 (v0.0.69 non-sanity3):
- dgxspark job 350535726: T5882219 FAIL 14s — "expected 0 to be greater than 0" (model count)
- ubuntu22 job 350535730: T5882219 FAIL 13m — "Not all wizard steps completed"
- ubuntu24 job 350535729: T5882219 FAIL 15m — "Not all wizard steps completed"
- dgx-station job 350535727: T5882219 FAIL 4s — "Not all wizard steps completed"
- u24-gpu job 350535728: T5882219 PASS
- wsl-x86 job 350535724: T5882219 PASS
- macos job 350535725: T5882219 PASS

NVB#6395743