Add hanzoai.zap: an httpx.BaseTransport / AsyncBaseTransport that routes the
SAME typed client calls through hanzo_zap.CloudClient over the ZAP binary wire.
Opt in with Hanzo(http_client=hanzoai.zap_http_client(...)); default stays HTTPS.
- hanzo-zap is an optional extra [zap], imported lazily so "import hanzoai"
still works when it (and zap-proto) are not installed.
- Public __all__ is byte-identical; new names are additive and kept out of __all__.
- Request to ZAP mapping: path to dotted method, api-key header to Bearer auth,
body forwarded verbatim.
- Tests: back-compat lock + request-translation via mock CloudClient (no network).
Co-authored-by: hanzo-dev <[email protected]>
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