ae.net.db: Add timing diagnostics to psql connrefused test

Add periodic timer output to diagnose the connection refused hang
on Windows CI.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: claude

net/db/psql/package.d

@@ -1567,8 +1567,17 @@ debug(ae_unittest) unittest
 
 	stderr.writeln("[psql connrefused test] starting");
 	bool gotError = false;
+
+	import ae.sys.timing : setTimeout;
+	import core.time : seconds;
+	setTimeout({ stderr.writeln("[psql connrefused test] 5s elapsed"); }, 5.seconds);
+	setTimeout({ stderr.writeln("[psql connrefused test] 30s elapsed"); }, 30.seconds);
+	setTimeout({ stderr.writeln("[psql connrefused test] 60s elapsed"); }, 60.seconds);
+
 	async({
+		stderr.writeln("[psql connrefused test] creating connection");
 		auto pg = new PgSqlConnection("127.0.0.1", 63999, "user", "db", "pass");
+		stderr.writeln("[psql connrefused test] awaiting ready");
 		try
 			await(pg.ready);
 		catch (Exception e)