plug_policy_engine v0.2.5

Fixes PC manual wake during sleep. A live off-to-on transition of the PC plug now starts the existing manual-on cooldown automatically, preventing immediate sleep-context cuts while boot power/activity detection catches up.\n\nValidation: python -m pytest -q -p no:cacheprovider tests\plug_policy_engine (159 passed); python -m compileall custom_components\plug_policy_engine tests\plug_policy_engine.