Seven people were pulled from the chilly surf at the mouth of Tomales Bay on Sunday after a 25-foot motorboat capsized, leaving two children trapped inside the cabin of the sinking craft. Officials said none of the boaters were wearing life jackets and that the children inside the cabin, ages 6 and 8, survived thanks to an air bubble. “The stars lined up for these folks,” Battalion Chief Bill Roberts of the Marin County Fire…