Use renderers offload helper in renderer client

[xeophon]

Summary

• import the renderer package's private _maybe_offload helper instead of reimplementing it in Verifiers
• remove the now-unused asyncio import and local helper

Tests

• uv run --frozen ruff check verifiers/clients/renderer_client.py tests/test_renderer_client.py
• uv run --frozen pytest tests/test_renderer_client.py
• pre-commit/pre-push hooks via git commit and git push

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Note

Low Risk
Low risk refactor that only changes where _maybe_offload comes from (and drops an unused asyncio import), with no functional changes expected beyond matching upstream behavior.

Overview
Switches verifiers/clients/renderer_client.py to import and use renderers.client._maybe_offload instead of maintaining a local async offload helper.

Removes the now-unused local _maybe_offload implementation and the asyncio dependency from this module.

^{Reviewed by Cursor Bugbot for commit e2b0685. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Remove duplicate _maybe_offload helper from renderer_client in favor of shared import

Deletes the local _maybe_offload definition in renderer_client.py and imports it directly from renderers.client instead. This deduplicates the helper and ensures both modules use the same offload logic.

^{Macroscope summarized e2b0685.}

[macroscopeapp]

Approvability

Verdict: Approved

This PR removes a locally-defined helper function (_maybe_offload) and imports it from the upstream renderers.client library instead. This is a mechanical code deduplication with no behavior change.

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