[sttts]

Summary

• add an explicit, repeatable --output NAME selector to aisimulate recommend
• discover post-recommendation writers through a new aisimulate.output_adapters entry-point group
• pass the same-named configuration section, final SweepResult, and prepared output directory to the selected writer
• keep simulation selection (--stack) independent from artifact selection (--output)

This is an upstream PoC for ai-dynamo/dynamo#14282. AISimulate does not currently have an extensible output interface; this PR proposes the smallest final-result hook needed for Dynamo to provide --output dgd from the ai-dynamo package.

The PoC intentionally does not implement DGD rendering in AISimulate and does not add per-round callbacks. Canonical recommendation.json and recommendation YAMLs are written before optional output plugins run.

Validation

• python/aisimulate/.venv/bin/pytest -c pytest.ini -p no:timeout tests/test_unified_cli.py tests/test_output_adapter_discovery.py tests/test_stack_discovery.py tests/sweeper/test_provider_discovery.py — 35 passed
• python/aisimulate/.venv/bin/ruff check --config python/aisimulate/pyproject.toml python/aisimulate/src/aisimulate/main.py python/aisimulate/src/aisimulate/output_adapter.py tests/test_unified_cli.py tests/test_output_adapter_discovery.py
• python/aisimulate/.venv/bin/python -m aisimulate.main recommend --help

[sttts]

Superseded by #334. #113 was accidentally closed during the rebase and cannot be reopened. Hence a new PR.