feat: re-add per-run sud log alongside the continuous server log

SudLogTask reuses ServerLogTask's sample format but only records while
a Sud run is active: starts on Play (fresh start only, not a Pause
resume) and writes logs/log_{date_time}_{sud_name}.log on Stop or
natural completion.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TvgC7oy9MxaA4ZQxXqkNdS

tasks/__init__.py

@@ -6,3 +6,4 @@ from tasks.pot import PotTask
 from tasks.tempctrl import TcTask
 from tasks.sud import SudTask
 from tasks.server_log import ServerLogTask
+from tasks.sud_log import SudLogTask