[TexasCoding]

Closes #567

Spec drift (run 41644653360): perps GET /margin/trades gained is_block_trade query param; MarginTrade / WS marginTradePayload gained is_block_trade; Klear report_type enum gained *_fp variants. Release 22.7.0 (additive, optional).

Changes

• perps.portfolio.trades / trades_all (sync + async): keyword-only is_block_trade: bool | None = None, sent as "true"/"false" only when not None.
• MarginTrade.is_block_trade, MarginTradePayload.is_block_trade: optional bool | None (spec-required → PERPS_EXCLUSIONS server_omits_despite_required).
• MarginReportTypeLiteral: full spec enum (adds *_fp variants plus previously missing base types incl. daily_statement).
• Specs synced; kalshi/_generated unchanged in effect. Version 22.7.0, CHANGELOG, docs/perps.md.

Blast radius (hand-written; GitNexus unavailable)

• _margin_trades_params is used only by the 4 perps trades methods; new param defaults to None → identical query for existing callers.
• New model fields default None; extra="allow" already present → no parsing change for existing payloads.
• Literal widening only accepts more values; no removals.
• No request bodies, retries, or core (non-perps) code touched.

Gates

ruff pass · mypy pass · 5072 passed/3 skipped · contracts strict 930 passed