Like the foggiest of days in San Francisco, the Giants are defined by a low ceiling. Last in walks, last in stolen bases, next-to-last in home runs and, inevitably with those ominous vital signs, last in runs. They are bound to get better, especially with Rafael Devers awakening from his slumber, but progress will be limited because the lineup has too little power, speed and patience. The Giants have played 44 games, more than a quarter of the season. They are on pace to score the fewest runs in a 162-game season in franchise history, a level below the rockbottom 1985 Giants, the only 100-loss team in franchise history. These Giants are historically bad at offensive baseball. San Francisco is the first team in 92 years and only the second in the live ball era, joining the 1934 Reds, with such meager totals of walks (92), stolen bases (12) and home runs (31) through 44 games. There is not much manager Tony Vitello can do beyond his constant tinkering with the batting order.…