"Important Notes:
- Make sure no bots are enforcing channel mode -i and/or -m."
No, there is no feature that will allow you to enforce -im under normal circumstances and have the bot automatically override it when sentinel is activated, because I'm lazy and I suck
(actually, it probably wouldn't work very well--like if two bots are running sentinel, one detects a flood and the other doesn't [due to lag or desync or whatever reason], and the first bot sets +im while the second keeps removing it, resulting in a possible mode war in the middle of a dangerous situation)