With the face-off between the Warriors and Jonathan Kuminga reaching Day 87 on Thursday, it’s apparent both sides are wading waist-deep through tedious self-harm. Their summer denouement never materialized, and they’ve plodded into an autumn of annoyance.With both sides being salty if Kuminga signs the qualifying offer, the surest path to mutual contentment would be a sign-and-trade deal, with the Warriors replacing Kuminga with a player better befitting their win-now vibe and with JK landing in a place that would give him the freedom to chase stardom. Happy them, happy him.Sign-and-trade options were pondered two months ago and then abandoned. But with training camp beginning next week, urgency induces revisiting. Trade conversations are restarting, according to two league sources.Failing that outcome, however, conceivably would nudge both sides toward the Blame Game, in which substantive dialogue is overrun by fingers pointing in both directions. As we know from our national discourse, this produces few winners and many losers.Golden State CEO Joe Lacob and general manager Mike Dunleavy would be subjected to jobs and darts, as would Kuminga and his representative,...