Update Python version, update API specs, fix non-nullable defaults in generated models

[cretz]

🚀 What

• Refresh the management, inference, and model-config API specs
• Stop allowing None for defaulted-but-non-nullable fields (closes Do not allow None for defaulted-but-null-not-allowed fields #14)
• Bump datamodel-code-generator 0.55 to 0.81, ty 0.0.43 to 0.0.81, and dev deps (covers the open dependabot bumps)

Backwards incompatible changes:

• 💥 Minimum Python is now 3.11; 3.10 is EOL next month
• 💥 Optional fields that the spec does not declare nullable no longer accept an explicit None and now raise ValidationError. Leaving a field unset is unchanged and still omits it from the request
• 💥 Generated enums are now StrEnum, so members compare equal to their string value and format as the bare value rather than ClassName.MEMBER
• 💥 The spec refresh renames and removes some generated models and client methods where the underlying API changed, including endpoints that moved to team-scoped paths

💻 How

• preprocess now rewrites discriminator mapping values during the V1-suffix strip. They were left stale, which was harmless only because every previous discriminated union tagged on a const field. The new enum-tagged unions fall back to the mapping, so codegen silently dropped the discriminator (and crashed outright on 0.55)
• Pass --strict-nullable so presence and nullability are modeled independently
• postprocess wraps literal defaults on model-typed fields in a validating call. Codegen emits the schema default verbatim (Limit | None = 500), relying on validate_default=True to coerce at runtime, which pydantic deliberately treats as a static type error
• clientgen narrows the error-body handler to ValidationError via contextlib.suppress, replacing a blind except Exception: pass. Required by ruff 0.16, which expanded its default rule set from 59 to 413 rules
• Dropped ty: ignore directives that the newer ty no longer needs

🔬 Testing

• uv run poe lint, typecheck, and test all clean
• Repeat generate-api runs are byte-stable, and CI regenerates and fails on any diff
• Verified request tri-state on a PATCH body: unset omits the field, explicit None sends null, a value sends the value
• Verified pydantic deep-copies the rewritten model-instance defaults per instance, so the dict-shaped ones are not shared mutable state

[Copilot]

🟡 Changes recommended

Regenerate affected exports and correct non-nullable model annotations before approval.

Get a fresh assessment by requesting another Copilot review.

Pull request overview

Refreshes API specifications and generated SDK clients, raises the minimum Python version to 3.11, and strengthens nullability/default handling.

Changes:

• Regenerates management, inference, and model-config APIs.
• Updates code generation, discriminator handling, and validation.
• Updates dependencies, CI, and tests.
• Corrects generated export ordering and non-nullable model annotations.

File summaries

File	Summary
tests/test_e2e.py	Updates E2E cleanup and handling.
tests/client/test_inference.py	Adds strict nullability coverage.
scripts/e2e_test_bootstrap/__main__.py	Adjusts import formatting.
scripts/apigen/specs/config.schema.json	Refreshes model-config schemas.
scripts/apigen/preprocess.py	Rewrites discriminator mappings.
scripts/apigen/postprocess.py	Validates generated defaults.
scripts/apigen/clientgen.py	Narrows error-body handling.
scripts/apigen/__main__.py	Enables strict-nullable generation.
pyproject.toml	Raises Python and tooling requirements.
baseten/client/modelconfig/_models.py	Regenerates model-config models; nullable annotations require correction.
baseten/client/modelconfig/__init__.py	Generated exports need regeneration for stable ordering.
baseten/client/managementapi/_client.py	Regenerates the management client.
baseten/client/managementapi/__init__.py	Generated exports need regeneration for stable ordering.
baseten/client/inferenceapi/_models.py	Regenerates inference models.
baseten/client/inferenceapi/_client.py	Regenerates the inference client.
baseten/client/inferenceapi/__init__.py	Generated exports need regeneration for stable ordering.
baseten/client/_management.py	Updates management context-manager typing.
baseten/client/_inference.py	Updates inference context-manager typing.
.github/workflows/ci.yml	Updates CI Python and generation checks.

Review details

Suppressed comments (1)

baseten/client/modelconfig/_models.py:645

• The schema for BDNConfig.mounts is an array without a null branch, but this generated annotation widens it to list[BDNVolumeMount] | None, so BDNConfig(mounts=None) is accepted even though the spec rejects it. This leaves the strict-nullable contract broken for the newly added config fields (the same issue applies to access and hotload); preserve omission without widening the input type and add a regression test.

    mounts: Annotated[
        list[BDNVolumeMount] | None,
        Field(
            description="Existing BDN volumes to mount when the model starts.",
            title="Mounts",
        ),
    ] = None

• Files reviewed: 19/22 changed files
• Comments generated: 3
• Review effort level: Lite

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