Python 0.6.0 parity map

Reference: typesafe-sdk-python 0.6.0, revision 420ef4ffb612d5a539a1e0f0fe883ff6770340af.

This is an implementation map, not a certification of complete parity. The current offline suite covers selected contracts; the full Python suite has not been ported and live API compatibility has not been verified. Rows citing an implementation or documentation describe the intended behavior, not an independently tested guarantee.

Upstream export/feature	PHP equivalent	Evidence	Honest limitation
TypeSafeClient	TypeSafe\\TypeSafeClient	tests/ContractTest.php	PHP uses try/finally rather than context manager syntax.
AsyncTypeSafeClient	TypeSafe\\AsyncTypeSafeClient	async contract test	Guzzle promises/cURL replace asyncio.
Models / AsyncModels	Models / AsyncModels resources	models tests	No Python async iterator is involved.
Noul, Choice, Score	same names in TypeSafe\\	serialization tests	PHP arrays need JsonObject internally for empty/sequential maps.
NoulModel, ChoiceModel, ScoreModel	Raw question arrays	raw question test	PHP has no TypedDict equivalent; not all upstream static type constraints are represented.
Question, QuestionModel, Questions	PHPDoc unions and arrays	question validation test	Runtime raw validation intentionally remains shallow.
JSONValue, JSONContent	Scalars, arrays and stdClass accepted through mixed inputs	serialization test	Recursive JSON aliases are not statically enforced.
SystemOneResponse	same name	response tests	Derived views are readonly arrays, not cached properties.
NoulAnswer, ChoiceAnswer, ScoreAnswer	same names	response tests	Score object keys are converted to PHP ints.
Usage	same name with inputTokens/outputTokens	response tests	billing_units remains intentionally absent, matching public upstream Usage.
ModelMetadata	same name with releaseDate	models test	Wire key remains release_date.
ListModelsResponse	same name	models test	Models are a PHP list array rather than Python tuple.
RetryPolicy	same name, camelCase options	retry contract test	Delay uses Guzzle's millisecond option; no Tenacity dependency.
TypeSafeError and status subclasses	same names	error contract test	Guzzle transport errors are normalized before escaping the client.
from_http_response	fromHttpResponse(ResponseInterface, ?RequestInterface)	response test	PSR-7 replaces httpx response/request types.
request_id, raw_http_response	magic properties plus getRequestId()/getRawHttpResponse()	metadata test	Metadata is unavailable on manually constructed DTOs.
system_one endpoints	systemOne, models->list	transport tests	Only the two upstream endpoints are implemented.
env/default config	camelCase constructor and env names	config coverage	No global app configuration is changed.
logging/redaction	PSR-3 Logger adapter	logging implementation	Bodies are not redacted; sanitized URLs omit userinfo/query/fragment.
HTTPX timeout phases	float or Timeout	timeout test	Guzzle has no exact write/pool phase analogue; read setting is handler-dependent.
async cancellation	Guzzle promise cancel() and client close()	async implementation	Cancellation/close semantics depend on the selected Guzzle handler.
context managers / pickling	close() and PHP object lifecycle	lifecycle docs	PHP has neither Python context manager nor pickle protocol.