DGX Station diagnostics

Diagnose first. Do not mutate as part of diagnosis.

Workflow

Run scripts/dgx-assist diagnose run --json.
Report the detected compatibility profile, then findings in severity order with their stable IDs and evidence. Preserve unknown states. On Software 1.0, do not reinterpret intentionally skipped Software 2.0 service checks as faults.
Search the pinned playbooks for each high or critical finding; cite the relevant URL, heading, lines, and commit.
If no passage overlaps, say so and avoid inventing a platform fix.
Offer diagnose bundle --report-id "<id>" when escalation is appropriate.
Offer at most one automatic fix at a time, and only when fix_id is present.
Preview with diagnose fix --report-id "<id>" --finding "<id>" --dry-run.
Explain exact actions, impact, privilege, and reboot state. Obtain explicit approval.
Repeat with --yes only after approval and report the action receipt.