Findings (1):
  Tier 3 — warnings:
    [T3] myst-xref-missing-cross-extension  doc/source/tune/api.md:7
          msg:    'myst' cross-reference target not found: 'development.rst'
          fix:    Rewrite as a {doc} role so it resolves to the document and is never ambiguous; drop the extension on the target.  Suggested: {doc}`text <development>`
          safety: mechanical

Unclassified (1) — no rule matched; resolve with the user, then file a skill-improvement ticket to add a rule:
  doc/source/tune/index.md:42: SEVERE: Title level inconsistent:

Suppressed (0) — known-benign, not actionable:

Next: apply the fixes above, then rebuild and re-run to confirm clean.
