Setting minimum duration limit
Hi there! I noticed that you have a way to define the maximum duration fraction - is there any reason you don't have the option for a minimum? I find that the code often underestimates the duration, so it can keep discovering the same transits over and over again before moving on. I often look for long-period planets, so being able to set a minimum duration limit (especially when using 30 minute cadence data) would be very useful, and from looking at the source code I don't think it would be too difficult to implement.
There is currently no way to directly limit transit duration, neither max nor min. Their values are calculated based on physical limits (link to code line). Ad hoc, you could edit these lines directly to modify your search. Alternatively, you can change the stellar mass and radius parameters which affects the T14 calculation (but beware, it also affects the period grid). Note that very short transit durations are plausible because they can be grazing.
I feel like this would be very helpful anyway. It might not be the default, but sometimes there's a need to look for specific durations.