Major Description
htrace-web: We should use greater-than-or-equal rather than greater-than in more places. It generally makes things easier on both the implementation and user side. For example, if you only have "Duration greater than" you can't search for spans with duration >= 0, but if you have "Duration greater than or equal" you can. It's also easier to efficiently implement greater-than-or-equal on the backend than greater-than, although we could implement the latter efficiently with some more effort.