test(sdk): add benchmark regression sleep

[Eugene Yurtsev (eyurtsev)]

Adds an intentional sleep(1) inside create_deep_agent() so benchmark CI should flag the regression path we want to validate.

Created with Deep Agents CLI using gpt-5.4 (provider: openai).

[codspeed-hq]

Merging this PR will not alter performance

✅ 32 untouched benchmarks
⏩ 15 skipped benchmarks¹

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_{Comparing eugene/benchmark-sleep-regression (d2e5cf8) with main (f3a19e9)}

Footnotes

1. 15 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[Copilot]

Pull request overview

This PR intentionally injects a fixed delay into create_deep_agent() to trigger benchmark regression detection in CI.

Changes:

• Import sleep from time.
• Add an unconditional sleep(0.1) at the start of create_deep_agent().

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