Add telemetry replay regression smoke

[hyeokjun32]

Summary

• add an end-to-end CLI smoke for telemetry export-history, inspect-history, and regression report with telemetry context
• document the replay-to-regression sequence in README and runtime telemetry history docs

Tests

• python -m pytest -q tests/test_regression.py::test_cli_telemetry_replay_to_regression_smoke
• python -m pytest -q tests/test_regression.py tests/test_runtime_telemetry_history.py
• python -m pytest -q