AKUNUR 3.0.0-alpha.6 AUTOPLAY / AGENT CHECKLIST

[ ] Tactical is shown as the initial AI agent.
[ ] Change AI agent cycles Tactical -> Legacy heuristic -> Random -> Tactical.
[ ] Tactical autoplay remains responsive and the Stop button works.
[ ] Tactical target/progress diagnostics identify a corner plan.
[ ] A genuine three-corner win ends normally and does not request a final Echo placement.
[ ] A repeated/no-progress game stops automatically rather than running indefinitely.
[ ] The warning and newest log entry state why autoplay stopped.
[ ] The board remains playable after an analytical autoplay stop; the game itself is not falsely declared won.
[ ] Restarting autoplay creates a fresh analysis window.
[ ] Legacy and Random autoplay still run.
