I am no longer a user of intra.42.fr, therefore I can no longer maintain this extension.
A simple extension for Firefox and Chrome that sums up the daily hours of log time of a user at https://intra.42.fr and shows the sum of each month in their Logtime section of the profile. The sum is updated every time the page is reloaded.
If you'd like to use it:
It is available in the Chrome Web Store.
Just download the firefox/web-ext-artifacts/ft_logtime-2.0-an+fx.xpi file from this repo and upload it to Menu > Add-ons > Settings cog > Install Add-on From File in your Firefox browser.