feat: redesign match play and add broadcast tooling

scripts/migrations/0007-jsonb-repair.sql

@@ -0,0 +1,15 @@
+-- Drizzle's jsonb with Bun.SQL stored objects as JSON strings ("{\"a\":1}")
+-- until src/lib/server/db/jsonb.ts. Turn those strings back into objects.
+DO $$
+DECLARE r record;
+BEGIN
+	FOR r IN
+		SELECT table_name, column_name FROM information_schema.columns
+		WHERE table_schema = 'public' AND data_type = 'jsonb'
+	LOOP
+		EXECUTE format(
+			'UPDATE %I SET %I = (%I #>> ''{}'')::jsonb WHERE jsonb_typeof(%I) = ''string'' AND left(%I #>> ''{}'', 1) IN (''{'', ''['')',
+			r.table_name, r.column_name, r.column_name, r.column_name, r.column_name
+		);
+	END LOOP;
+END $$;