SAN FRANCISCO — The Giants’ announcement on Tuesday that they had signed right-handed reliever Jason Foley included an important update on the health of his shoulder and plenty of information to show why this could end up being a very savvy move. But what was missing from the announcement also was notable. The Giants came home from the Winter Meetings in Orlando with a full 40-man roster, and while Foley will almost certainly start the season on the 60-day IL, that move can’t be made until the spring, means they soon will need to announce who is being taken off the roster for Foley. The same will be true once the ink is dry on the two-year deal they have agreed to with right-handed starter Adrian Houser.For a team that’s most interesting offseason move coming into Tuesday had been DFA’ing former top prospect Marco Luciano, cutting two more players loose is no small thing, and that’s part of what stood out from the busiest day of the Giants’ offseason so far. Foley and Houser fill important holes for the 2026 roster, but right now, the biggest question is: What’s next?Will a big-name starting pitcher be added in the...