Booster Leboncoin: the Manifest V3 Chrome extension that bumps my ads and watches prospects for me (opens in new tab)

I have seven active ads on Leboncoin (France's Craigslist): IT support, web dev, WordPress hosting, retrogaming, e-waste pickup. All relevant for my area, all invisible after day three. On Leboncoin, without a paid sub, the only way to climb back to the top is to delete and republish each ad. By hand. One by one. Every week. With photo re-upload. After three Sunday mornings of doing this between two coffees, I figured out I'd rather code an extension I might never ship than do the chore one m...