revert(agentic): restore spread phase starts

[cquil11]

Summary

• Restore spread warmup and profiling phase starts as the Agentic Replay default.
• Keep --burst-phase-starts available as an explicit throughput-oriented opt-in.
• Preserve the end-to-start timing cache invalidation from refactor(agentic): burst phase starts by default #22.

Why

The default change in #22 altered trace-replay semantics. Faithful recorded phase offsets should remain the default; benchmarks that want synchronized startup can opt in explicitly.

Validation

• 759 passed for tests/unit/timing/strategies/test_agentic_replay.py and tests/unit/common/config
• Pre-commit hooks passed, including test-imports with the worktree source path
• CLI option documentation regenerated

[github-actions]

Try out this PR

Quick install:

pip install --upgrade --force-reinstall git+https://github.com/ai-dynamo/aiperf.git@d4b2362b151d5d2f422390e0ce3f2fa1ebc22ac5

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@d4b2362b151d5d2f422390e0ce3f2fa1ebc22ac5

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Last updated for commit: d4b2362 • Browse code

[github-actions]

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