SDK 1.17.0 regeneration + pydantic extraction schemas

[fern-api]

Summary

Combines two changes on top of a fresh Fern regeneration from documentation main:

1. SDK regeneration to 1.17.0 — generated from current docs OpenAPI (includes workflow run package / multifile support, evaluation-set metric types, Created by fields, etc.). Fern-replay conflicts on pyproject.toml and client_wrapper.py resolved (kept generated 1.17.0 version strings).
2. Pydantic extraction schema support — previously #77; stacked on top of the regen. Pass a pydantic.BaseModel as config["schema"] for typed extraction end-to-end.

Supersedes closed #76 (stale vs docs main) and #77 (pydantic-only, pre-regen).

from typing import Optional
from pydantic import BaseModel, Field
from extend_ai import Extend, ExtendCurrency, ExtendDate

class Invoice(BaseModel):
    invoice_number: Optional[str] = Field(None, description="The invoice number")
    invoice_date: ExtendDate = Field(None, description="The invoice date")
    total: Optional[ExtendCurrency] = None

client = Extend(token="...")
result = client.extract(
    file={"url": "https://example.com/invoice.pdf"},
    config={"schema": Invoice},
)
if result.status == "PROCESSED" and result.output is not None:
    print(result.output.value.invoice_number)

Notable regen follow-ups

• workflow_runs.create_and_poll() now accepts/forwards the new package param (caught by signature-parity tests).
• typing_extensions floor bumped to >= 4.3.0 (required for generic TypedDicts used by typed configs).

Pydantic feature highlights

• Fail-fast: non-Optional primitives/enums/dates, recursive models, field aliases, and List[Optional[T]] raise SchemaConversionError before any request
• ExtractOutputValidationError preserves the completed run if residual validation fails
• Typed schemas on extract(), extract_runs.create() / create_and_poll(), extractors.create()/update(), extractor_versions.create()
• Signature-parity tests guard wrapper drift from future Fern gens

Test plan

• Local pytest tests/wrapper tests/custom (259 passed, 1 pre-existing skip)
• Local mypy . clean
• CI compile + test green on this PR