sphinx-fix

1Build: state=Finished  success=False  exit=1  build finished with problems, 4 warnings.2 3Root-cause groups (1) — a structural root masks a downstream flood; fix the root, rebuild, and the masked references clear together:4  ROOT [T2] autosummary-stub-not-found — ray.data.Dataset.* (2 stubs not generated, masking 2 downstream references)5        where:  doc/source/apis/data/ray.data.Dataset.rst:206        stubs:  ray.data.Dataset.map_batches, ray.data.Dataset.map7        fix:    Do not fix per entry when the failure is in bulk. Determine scope first: many missing stubs sharing a module prefix point at one root -- confirm the module imports under the build's mock set (autodoc_mock_imports) and that autosummary_generate is on; when an API-ref restructuring is in flight, the correct move may be to revert or repair the file moves rather than edit each entry. A lone missing stub means the member no longer exists -- update or drop the autosummary entry.8        safety: judgment (needs your call)9    masks 2 downstream py:* reference(s) — collapsed (full list in --json):10          doc/source/apis/data/aggregate.rst:6  ray.data.Dataset.map_batches11          doc/source/apis/data/aggregate.rst:6  ray.data.Dataset.map12 13Findings (0):14  (none)15 16Unclassified (0) — no rule matched; resolve with the user, then file a skill-improvement ticket to add a rule:17 18Suppressed (0) — known-benign, not actionable:19 20Next: fix Tier 2 first (it masks others), then rebuild and re-run — do not assume one pass is complete.21