In the case of "I didn't work until yesterday," the syntax gives you two possible readings but the semantics of "until" makes one more preferred than another. You'll want to start by checking out Lauri Karttunen's classic paper "Until" from CLS 10 which I found a link for:

http://www2.parc.com/istl/members/karttune/public…

Incidentally I bumped into this blog when I was thinking about why the negation of 'until' is ambiguous. (I didn't work until yesterday can mean you worked or did not work yesterday). I always naively thought it would be simply due to scope, but I am beginning to think i may be wrong, as the 'work' bit is not usually negated. Let me know if you know of some literature on this….

余談ですが「まで」を否定するとなぜ曖昧さが出るのかを考えていてこのサイトにぶちあたりました。「昨日まで働いた」はunambiguousなのに何で「昨日まで働かなかった」は昨日働いたかについて曖昧なんでしょう。スコープだとばっかり思ってましたが、働いたことは確かな以上、そうでもないような。ご存知でしたらお教えください。

まともな広告なら「4月2日朝10時から」と入れて期間を明示すべきところですが、これだと右ツリーの解釈をされて吉野家が損するだけ :-p