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.
• Carry forward the end-to-start timing cache invalidation already pinned by InferenceX.

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.

Supersedes #21, which was mistakenly targeted at the already-merged feature branch instead of cquil11/aiperf-agentx-v1.0.

[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

---

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.