test(client): pin behaviour against the last released client

The transport changed; the published behaviour must not. These tests compare
against the 1.5.3 client vendored under tests/baseline: constructor and method
signatures via AST, the request that goes out, the exceptions that come back,
and the exact dict each method returns — the last by running both clients over
the same responses.

Also stop sending the generated fixed multipart boundary. An uploaded file
containing those bytes would corrupt the encoding, so the header is dropped and
the transport picks a random boundary, as the previous client did.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014f9oEEYspPH4fmPULTnLkJ

Author: chandrasekharan-zipstack

pyproject.toml

@@ -68,9 +68,9 @@ lint = [
 
 [tool.ruff]
 line-length = 88
-# Generated code is overwritten wholesale by tools/gen_sdk.sh, so a lint finding
-# there can never be fixed in place.
-extend-exclude = ["src/unstract/api_deployments/sdk_docstudio"]
+# Generated and vendored code is overwritten wholesale by its refresh script, so
+# a lint finding there can never be fixed in place.
+extend-exclude = ["src/unstract/api_deployments/sdk_docstudio", "tests/baseline"]
 
 [tool.ruff.lint]
 select = ["E", "F", "W", "I"]

src/unstract/api_deployments/client.py

@@ -406,6 +406,10 @@ def structure_file(self, file_paths: list[str]) -> dict:
 
         org_name, api_name = self._deployment_route
         request_kwargs = execute._get_kwargs(org_name, api_name, body=body)
+        # The generated builder pins a fixed multipart boundary in the header. An
+        # uploaded file containing those bytes would break the encoding, so let
+        # the transport pick a random boundary instead.
+        request_kwargs.get("headers", {}).pop("Content-Type", None)
         method = request_kwargs.pop("method")
         url = request_kwargs.pop("url")
 
@@ -516,9 +520,7 @@ def check_execution_status(self, status_check_api_endpoint: str) -> dict:
         # The generated builder writes every declared query parameter, including
         # ones this client has never sent. Keep only what was asked for.
         request_kwargs["params"] = {
-            k: v
-            for k, v in request_kwargs["params"].items()
-            if k in _STATUS_SEND_ONLY
+            k: v for k, v in request_kwargs["params"].items() if k in _STATUS_SEND_ONLY
         }
         response = self._request_with_retry(
             request_kwargs.pop("method"), request_kwargs.pop("url"), **request_kwargs