chore(sdk): regenerate from latest OpenAPI spec

[jfrench9]

Summary

Regenerates the Python client against the latest OpenAPI spec. The backend tightened its endpoint/model descriptions — removing internal spec references (Phase 2 of §3.2, information-block.md §5.2.2, Tier 1/Tier 2, "Phase 2 MVP") that had leaked into public descriptions — so the regenerated SDK picks those wording changes up.

Changes

These are docstring-only updates; there are no changes to types, fields, signatures, or runtime behavior:

• api/graph_operations/op_change_reporting_style.py — drop Phase 2 of §3.2 from the operation/body docstrings.
• api/extensions_robo_ledger/op_create_taxonomy_block.py, op_evaluate_rules.py — docstring wording sync.
• models/rollforward_mechanics.py — remove Tier 1/Tier 2/information-block.md §4.5 and MVP references from the class docstring.
• models/taxonomy_block_rule.py, taxonomy_block_rule_request.py — drop information-block.md §5.2.2 reference.
• models/change_reporting_style_op.py, close_period_response.py, list_subgraphs_response.py, verification_category_summary.py, verification_summary.py — minor description wording sync.

Testing

• Pre-commit hook passed: ruff check (all passed), ruff format --check (clean), basedpyright (0 errors, 0 warnings), and the full pytest suite (453 collected).

Notes

• Purely a generated-output refresh — no public API surface change, so no consumer impact beyond docstrings.
• Version bump / publish remain owned by the maintainer; this PR does not release.