[TexasCoding]

Closes #574

Reconciles spec drift from the 2026-11-09 Weekly Spec Sync (core OpenAPI 3.36.0 content change, perps OpenAPI, perps AsyncAPI). Spec hashes verified against the issue. kalshi/_generated/ regenerated (no diff). Release 22.10.0 (minor — additive optional only).

Changes

• Core: ApiKey.key_type optional (ApiKeyTypeLiteral | None).
• Perps: SubaccountTypeLiteral gains "managed_isolated".
• Perps: new perps.fcm.transfer_position(...) sync/async → POST /margin/fcm/positions/transfers (201 CreateMarginFCMPositionTransferResponse). Request model CreateMarginFCMPositionTransferRequest with extra="forbid", dumped with exclude_none=True, by_alias=True, mode="json". Never retried (POST). Registered in PERPS_METHOD_ENDPOINT_MAP, PERPS_BODY_MODEL_MAP, and PERPS_CONTRACT_MAP.
• Description-only spec changes (positions/settlement docs, block-trade accept rebooking, MCP OAuth read scopes, perps market_lifecycle_v2.is_deactivated) reflected in docs/docstrings.
• Version bump 22.9.0 → 22.10.0 (pyproject.toml, kalshi/__init__.py, CHANGELOG.md).

Blast radius (hand-written; GitNexus unavailable)

• ApiKey: one new optional field defaulting to None; existing parsing unaffected. Consumers: api_keys.list/create/generate responses only.
• SubaccountTypeLiteral: widened Literal (superset) used by perps portfolio, margin_account, funding models — only effect is that responses carrying managed_isolated now validate instead of failing. Type checkers doing exhaustive matching on the Literal will see a new member (additive).
• FcmResource / AsyncFcmResource: new method + private body builder only; existing methods untouched. New exports appended to kalshi.perps and kalshi.perps.models __all__.
• Contract maps: three new entries; no existing entries changed.
• No changes to transport, retry, auth, or WebSocket runtime code.

Gates (head a9d7492)

• uv run ruff check . — pass
• uv run mypy kalshi/ — pass (161 files)
• uv run pytest tests/ --ignore=tests/integration -q — 5145 passed, 3 skipped
• uv run pytest tests/test_contracts.py -W error::UserWarning — 935 passed