Getty Houston pitcher Framber Valdez Framber Valdez had gone nearly three months without blinking.   No three-run innings. No unraveling moments. Just one groundball clinic after another — the kind of run that cements a pitcher’s value right before a contract year hits full speed.   Then came the Boston Red Sox.   On Sunday, in his first appearance against Boston this season, Valdez finally cracked. A six-run meltdown in the fourth inning — highlighted by a balk, an error on a bunt, and a few