TODO

Fix CSP: add frame-src to allow iframes from videos.erg.be and depnum.happyngreen.fr
Website iframe overlay: remove blur, move button to bottom-right, replace text with SVG icon + tooltip
Fix "Copier" button in logs section scrolling out of view on horizontal scroll
Remove TOC temporary debug error_log calls
Fix PeerTube upload failure: PHP /tmp tmpfs too small for large video files