refactor(agentic): burst phase starts by default

[cquil11]

Summary

• Make Agentic Replay burst warmup and profiling phase starts by default so configured concurrency becomes active within the benchmark window.
• Preserve recorded inter-turn timing after the initial phase dispatch.
• Keep spread phase starts available by setting burst_phase_starts to false.
• Regenerate the CLI option documentation.

Why

Long recorded offsets can otherwise delay initial requests beyond the benchmark warmup or profiling window, preventing the requested concurrency from becoming active.

Validation

• uv run pytest tests/unit/timing/strategies/test_agentic_replay.py tests/unit/common/config -q (758 passed)
• uv run pre-commit run
• uv run ruff check ...
• uv run ruff format --check ...
• make generate-cli-docs

Consumed by SemiAnalysisAI/InferenceX#2375.

[github-actions]

Try out this PR

Quick install:

pip install --upgrade --force-reinstall git+https://github.com/ai-dynamo/aiperf.git@fb39d0df33cdb4ea61f15e2ec41618604c5c8576

Recommended with virtual environment (using uv):

uv venv --python 3.12 && source .venv/bin/activate
uv pip install --upgrade --force-reinstall git+https://github.com/ai-dynamo/aiperf.git@fb39d0df33cdb4ea61f15e2ec41618604c5c8576

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Last updated for commit: fb39d0d • Browse code

[github-actions]

Fern Docs Preview: generation failed — see the Actions log for details. This does not block merge; ask a maintainer to retry if needed.