Like the title says. Bike hasn't been shifting very well lately. So figured it was time for a bath and to clean&lube the chain. Rear shifts just fine, but front doesn't shift at all. When I feel the cables underneath the downtube while shifting, I can feel the rear cable contract&lossen with every shift. But the front cable doesn't move at all.

So is this likely a broken cable, shifter, or something else?

Front shifter is a sora triple, but the newer one without thumb buttons.

Front shifting has never been great, for what it's worth-only ever been able to get two chainrings working at a time reliably.